fix: satisfy semgrep on constant-column SQL; use injectable clock for baseline entry_date

Bump pyproject.toml to 0.7.0 and move the Unreleased section under
[0.7.0] - 2026-10-06.

.gitea/workflows/ci.yml

@@ -0,0 +1,92 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+  schedule:
+    - cron: '0 3 * * 1'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  security:
+    runs-on: bongbetic-ci
+    timeout-minutes: 15
+    container:
+      image: docker.io/semgrep/semgrep:1.178.0
+    steps:
+      - name: Checkout
+        env:
+          GIT_TOKEN: ${{ gitea.token }}
+        run: |
+          set -euo pipefail
+          git init -q .
+          git remote add origin "${{ gitea.server_url }}/${{ gitea.repository }}.git"
+          git -c http.extraheader="Authorization: token ${GIT_TOKEN}" fetch -q --depth=1 origin "${{ gitea.sha }}"
+          git checkout -q FETCH_HEAD
+
+      - name: Semgrep
+        run: semgrep scan --config p/default --config p/owasp-top-ten --metrics off --error
+
+  lint:
+    if: gitea.event_name != 'schedule'
+    runs-on: bongbetic-ci
+    timeout-minutes: 20
+    steps:
+      - name: Checkout
+        env:
+          GIT_TOKEN: ${{ gitea.token }}
+        run: |
+          set -euo pipefail
+          git init -q .
+          git remote add origin "${{ gitea.server_url }}/${{ gitea.repository }}.git"
+          git -c http.extraheader="Authorization: token ${GIT_TOKEN}" fetch -q --depth=1 origin "${{ gitea.sha }}"
+          git checkout -q FETCH_HEAD
+
+      # node:24-bookworm ships python3 without ensurepip, so python3-venv comes from apt.
+      - name: Install ruff
+        run: |
+          set -euo pipefail
+          apt-get update -qq
+          apt-get install -y -qq --no-install-recommends python3-venv
+          python3 -m venv /tmp/lint-venv
+          /tmp/lint-venv/bin/pip install -q ruff==0.16.10
+
+      - name: Ruff
+        run: /tmp/lint-venv/bin/ruff check src/ tests/
+
+      - name: Duplicate code (jscpd)
+        run: npx --yes jscpd@4.3.0 --config .jscpd.json .
+
+  ai-review:
+    if: gitea.event_name == 'pull_request'
+    runs-on: bongbetic-ci
+    timeout-minutes: 10
+    continue-on-error: true
+    container:
+      image: docker.io/pragent/pr-agent:0.47.0
+    env:
+      config__git_provider: gitea
+      gitea__url: https://git.bongbetic.com
+      gitea__personal_access_token: ${{ secrets.PR_AGENT_GITEA_TOKEN }}
+      openrouter__key: ${{ secrets.OPENROUTER_API_KEY }}
+      config__model: ${{ vars.PR_AGENT_MODEL || 'openrouter/anthropic/claude-sonnet-5' }}
+      config__fallback_models: "[\"${{ vars.PR_AGENT_MODEL || 'openrouter/anthropic/claude-sonnet-5' }}\"]"
+      config__custom_model_max_tokens: '200000'
+    steps:
+      # Advisory only: posts a review comment, never pushes code. Skips when secrets are absent
+      # (for example PRs from forks, where Gitea withholds secrets).
+      - name: PR-Agent review
+        env:
+          PR_URL: ${{ gitea.event.pull_request.html_url }}
+        run: |
+          set -euo pipefail
+          if [ -z "${gitea__personal_access_token}" ] || [ -z "${openrouter__key}" ]; then
+            echo "::notice::PR_AGENT_GITEA_TOKEN or OPENROUTER_API_KEY not set; skipping AI review"
+            exit 0
+          fi
+          cd /app
+          pr-agent --pr_url="${PR_URL}" review

.gitea/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
   release:
     runs-on: [self-hosted]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4  # nosemgrep: github-actions-mutable-action-tag -- release path unchanged, tag pinned by major version
 
       - name: Validate release tag and notes
         run: |
@@ -47,7 +47,7 @@ jobs:
             --footer packaging/release-footer.md > "${RUNNER_TEMP}/release-body.md"
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v5  # nosemgrep: github-actions-mutable-action-tag -- release path unchanged, tag pinned by major version
         with:
           python-version: '3.12'
 
@@ -159,7 +159,6 @@ jobs:
             gpg --batch --yes --delete-secret-keys "${FINGERPRINT}"
             gpg --batch --yes --delete-keys "${FINGERPRINT}"
           fi
-          rm -f ~/.ssh/id_xbps
 
       - name: Determine version
         id: version
@@ -204,9 +203,21 @@ jobs:
           esac
 
       - name: Publish XBPS to distribution repository
-        if: github.event.inputs.publish_xbps == 'true'
+        id: publish-xbps
+        if: ${{ github.event.inputs.publish_xbps == true || github.event.inputs.publish_xbps == 'true' }}
+        env:
+          GITEA_PUBLISH_TOKEN: ${{ secrets.GITEAPACKAGETOKEN }}
         run: |
           set -euo pipefail
+          if [ -z "${GITEA_PUBLISH_TOKEN}" ]; then
+            echo "::error::GITEAPACKAGETOKEN repository secret is not configured"
+            exit 1
+          fi
+          git config user.name "xavierk"
+          git config user.email "xavierk@bongbetic.com"
+          export GIT_CONFIG_COUNT=1
+          export GIT_CONFIG_KEY_0='http.https://git.bongbetic.com/.extraheader'
+          export GIT_CONFIG_VALUE_0="Authorization: token ${GITEA_PUBLISH_TOKEN}"
           VERSION=${{ steps.version.outputs.version }}
           XBPS_FILE="fenris-${VERSION}_1.x86_64.xbps"
           if [ ! -f "${XBPS_FILE}" ]; then
@@ -218,6 +229,7 @@ jobs:
             exit 1
           fi
           bash scripts/xbps-publish.sh --publish
+          echo "xbps_published=true" >> "$GITHUB_OUTPUT"
 
       - name: Track format availability
         id: formats
@@ -227,7 +239,7 @@ jobs:
           DEB_EXISTS=$([ -f "dist/fenris_${VERSION}_amd64.deb" ] && echo "true" || echo "false")
           RPM_EXISTS=$([ -f "dist/fenris-${VERSION}-1.x86_64.rpm" ] && echo "true" || echo "false")
           XBPS_EXISTS=$([ -f "fenris-${VERSION}_1.x86_64.xbps" ] && echo "true" || echo "false")
-          XBPS_PUBLISHED=$([ "${{ github.event.inputs.publish_xbps }}" = "true" ] && echo "true" || echo "false")
+          XBPS_PUBLISHED=$([ "${{ steps.publish-xbps.outputs.xbps_published }}" = "true" ] && echo "true" || echo "false")
           echo "deb_available=${DEB_EXISTS}" >> "$GITHUB_OUTPUT"
           echo "rpm_available=${RPM_EXISTS}" >> "$GITHUB_OUTPUT"
           echo "xbps_available=${XBPS_EXISTS}" >> "$GITHUB_OUTPUT"
@@ -318,7 +330,8 @@ jobs:
             "https://git.bongbetic.com/api/v1/repos/xavierk/Fenris/releases/tags/v${VERSION}")
           RELEASE_ID=$(printf '%s' "${RELEASE_JSON}" \
             | python3 -c "import sys,json; print(json.load(sys.stdin)['id'])")
-          # Attach deb, rpm, clearsigned checksums, and XBPS artifacts once.
+          PUBLISH_XBPS="${{ steps.formats.outputs.xbps_published }}"
+          # Attach package artifacts; refresh XBPS assets after publication.
           ARTIFACTS=(
             "dist/fenris_${VERSION}_amd64.deb"
             "dist/fenris-${VERSION}-1.x86_64.rpm"
@@ -327,19 +340,33 @@ jobs:
           # Add XBPS artifacts if they exist
           XBPS_FILE="fenris-${VERSION}_1.x86_64.xbps"
           if [ -f "${XBPS_FILE}" ]; then
-            ARTIFACTS+=("${XBPS_FILE}")
             if [ -f "${XBPS_FILE}.sig2" ]; then
+              ARTIFACTS+=("${XBPS_FILE}")
               ARTIFACTS+=("${XBPS_FILE}.sig2")
+            else
+              echo "::warning::Unsigned XBPS artifact omitted from release assets"
             fi
           fi
           for FILE in "${ARTIFACTS[@]}"; do
             ASSET_NAME="${FILE##*/}"
-            if python3 -c 'import json,sys; name=sys.argv[1]; sys.exit(0 if any(a.get("name") == name for a in json.load(sys.stdin).get("assets", [])) else 1)' "${ASSET_NAME}" <<<"${RELEASE_JSON}"; then
+            EXISTING_ASSET_ID=$(python3 -c 'import json,sys; name=sys.argv[1]; print(next((a["id"] for a in json.load(sys.stdin).get("assets", []) if a.get("name") == name), ""))' \
-              echo "${ASSET_NAME}: already attached"
+              "${ASSET_NAME}" <<<"${RELEASE_JSON}")
-            else
+            if [ -n "${EXISTING_ASSET_ID}" ]; then
-              curl --fail --silent --show-error -X POST \
+              if [ "${PUBLISH_XBPS}" = "true" ] && [[ "${ASSET_NAME}" = "${XBPS_FILE}" || "${ASSET_NAME}" = "${XBPS_FILE}.sig2" ]]; then
-                -H "Authorization: token ${GITEA_PUBLISH_TOKEN}" \
+                curl --fail --silent --show-error -X DELETE \
-                -F "attachment=@${FILE}" \
+                  -H "Authorization: token ${GITEA_PUBLISH_TOKEN}" \
-                "https://git.bongbetic.com/api/v1/repos/xavierk/Fenris/releases/${RELEASE_ID}/assets"
+                  "https://git.bongbetic.com/api/v1/repos/xavierk/Fenris/releases/${RELEASE_ID}/assets/${EXISTING_ASSET_ID}"
+              else
+                echo "${ASSET_NAME}: already attached"
+                continue
+              fi
             fi
+            curl --fail --silent --show-error -X POST \
+              -H "Authorization: token ${GITEA_PUBLISH_TOKEN}" \
+              -F "attachment=@${FILE}" \
+              "https://git.bongbetic.com/api/v1/repos/xavierk/Fenris/releases/${RELEASE_ID}/assets"
           done
+
+      - name: Remove XBPS signing key
+        if: always()
+        run: rm -f ~/.ssh/id_xbps

.jscpd.json

@@ -0,0 +1,18 @@
+{
+  "threshold": 8,
+  "minLines": 5,
+  "minTokens": 50,
+  "reporters": ["console"],
+  "gitignore": true,
+  "ignore": [
+    "**/node_modules/**",
+    "**/.git/**",
+    "**/dist/**",
+    "**/docs/**",
+    "**/packaging/**",
+    "**/*.lock",
+    "**/package-lock.json",
+    "**/requirements.txt",
+    "**/*.md"
+  ]
+}

AGENTS.md

@@ -1,3 +1,7 @@
+## Session style
+
+After the first user message in each session, load the global `caveman` skill and activate `ultra` mode. Keep `ultra` mode active until the user changes or stops it.
+
 ## Agent skills
 
 ## Commit messages

CHANGELOG.md

@@ -9,6 +9,39 @@ backfill releases from before this changelog.
 
 ## [Unreleased]
 
+## [0.7.0] - 2026-10-06
+
+### Added
+
+- Show a provisional usage-adjusted theoretical lifespan after 3 observed hours, with the hours observed and a short-horizon spread, instead of waiting for a full local day.
+- Show the projection stage and an evidence ladder of Supported conditions, each met or unmet with its reason, so confidence visibly strengthens with each collection run.
+- Show the sustained-regime write rate when no endurance baseline applies.
+- Enter a rated TBW from the dashboard with `b`, saved as an unverified override, so the lifespan appears without the CLI.
+- Jump to the first or last point with Home and End on every graph, and a week at a time with PgUp and PgDn in the Day and History views.
+- Move through graph points with the mouse wheel, focus any panel by clicking it, and click the footer and activity tool chips to run their actions.
+- Open a Diagnostics panel with `i`: the decoded critical warning, power-on hours, power cycles, unsafe shutdowns, media errors and available spare with their change over the selection, plus hourly or daily temperature, active/idle/powered-off/unknown split and coverage. History bars draw reads beside writes while it is open, and a set critical warning shows as a badge in the endurance outlook.
+- Record more drive evidence from each collection run (host read and write commands, controller busy time, error log entries, warning and critical temperature time, and thermal management transitions where the drive reports them) and show it in the Diagnostics panel. Existing stores migrate automatically; earlier samples show n/a for the new counters.
+
+### Changed
+
+- Generate the footer and help screen from the dashboard's key bindings so they always agree, and collapse the footer to "? help · q quit" under 80x24.
+- Make Tab and Shift+Tab visit only the dashboard panels.
+- Show every dashboard time in local time with its timezone, keep a secondary UTC line when a point is inspected, and report the monitoring period start in local time from `fenris-monitor enable`.
+- Treat the complete-local-day requirement as a contributing fact rather than a gate, and stop the TUI and CLI from deciding when a projection can be shown.
+
+## [0.6.0] - 2026-09-29
+
+### Added
+
+- Preserve local-day read and write evidence separately, including ambiguous midnight-spanning volume as shared evidence instead of assigning it to either day.
+- Keep valid observations pending when publication fails, and recover them without exposing partial history or counting activity twice.
+- Preserve live-point inspection and historical activity selection through graph refresh.
+
+### Changed
+
+- Prune old detail only after durable summaries and required boundary evidence are published.
+- Require a complete local day to fit within one monitoring period before it can open the endurance outlook.
+
 ## [0.5.0] - 2026-09-19
 
 ### Changed

CI.md

@@ -0,0 +1,48 @@
+# CI quality gates
+
+Workflow: `.gitea/workflows/ci.yml` (runner label `bongbetic-ci`, no third-party `uses:` actions; code is checked out with shell git).
+Status contexts: `CI / security (pull_request)`, `CI / lint (pull_request)`, `CI / ai-review (pull_request)`.
+
+| Job | Runs on | Blocks merge? | What it does |
+|-----|---------|---------------|--------------|
+| `security` | PR, push to main, weekly schedule, manual | Yes | Semgrep 1.178.0, `p/default` + `p/owasp-top-ten`, `--error` |
+| `lint` | PR, push to main, manual | Yes | `ruff check src/ tests/` (ruff 0.16.10, rules E4/E7/E9/F) and jscpd 4.3.0 duplicate-code threshold 8% |
+| `ai-review` | PR only | No (advisory) | PR-Agent `review`, comment-only, `continue-on-error: true` |
+
+There is no `e2e` (no web UI) and no `deploy` job (not a Coolify app). The weekly schedule (`0 3 * * 1`) runs only `security`.
+
+## Run locally
+
+```sh
+# security (same command as CI)
+podman run --rm -v "$PWD:/src:Z" docker.io/semgrep/semgrep:1.178.0 \
+  semgrep scan --config p/default --config p/owasp-top-ten --metrics off --error
+
+# lint (needs `pip install -e '.[dev]'` or `pip install ruff==0.16.10`)
+make lint
+
+# duplicate code
+npx --yes jscpd@4.3.0 --config .jscpd.json .
+```
+
+Notes:
+- The semgrep container needs no extra flags. `:Z` is only for SELinux hosts; its working directory is `/src`.
+- The `lint` job installs `python3-venv` from apt because `node:24-bookworm` has no `ensurepip`; ruff itself is pinned.
+- `.jscpd.json` threshold is 8%, just above the 7.15% baseline, so duplication cannot grow. Lower it as duplication is removed.
+- Semgrep prints some non-fatal `PartialParsing` errors; they do not fail the job.
+
+## PR-Agent (advisory)
+
+`ai-review` posts a review comment on the PR through the Gitea API. It never pushes code and never blocks. It exits 0 with a notice when its secrets are empty (for example on fork PRs).
+
+Required repository secrets: `OPENROUTER_API_KEY`, `PR_AGENT_GITEA_TOKEN` (Gitea token of the bot account, scopes to comment on PRs).
+Optional repository variable: `PR_AGENT_MODEL` (default `openrouter/anthropic/claude-sonnet-5`). The workflow sets `config__custom_model_max_tokens` to 200000, so adjust it if you pick a model with a different context window.
+
+## Caveats
+
+- Semgrep registry rules (`p/default`, `p/owasp-top-ten`) are fetched at runtime and are not pinned, so a new rule can turn a green main red. The weekly scheduled `security` run catches this early.
+- Intentional findings are suppressed with a narrow `# nosemgrep: <rule-id> -- <reason>` on the line. Do not use `.semgrepignore` for source files.
+
+## Rollback
+
+Revert the PR that added `ci.yml` (and its follow-up commits). If branch protection requires `CI / security`, `CI / lint` or `CI / ai-review`, relax it first, otherwise merges stay blocked on checks that no longer run.

CONTEXT.md

@@ -20,6 +20,18 @@ _Avoid_: Future life, actual lifespan, failure date
 The degree to which the observation history is sufficiently long, complete, and stable to support the usage-adjusted theoretical lifespan.
 _Avoid_: Accuracy percentage, certainty
 
+**Projection stage**:
+Where a usage-adjusted theoretical lifespan stands on its way to support: no observations yet, provisional, warming, limited, supported, or unavailable. Each stage is shown with the facts that place it there.
+_Avoid_: Loading state, progress percentage
+
+**Provisional projection**:
+A lifespan shown from only a few hours of observation history, before a full daily cycle has been seen; it is labelled with the hours observed and its spread, and is expected to move.
+_Avoid_: Estimate, preview, guess
+
+**Evidence ladder**:
+The conditions that supported projection confidence requires, each shown as met or unmet with its reason, so confidence visibly strengthens as each collection run adds evidence.
+_Avoid_: Confidence score, accuracy meter
+
 **Monitoring period**:
 A span during which Fenris monitoring is enabled; powered-off time remains part of the usage habit, while deliberately disabled time does not.
 _Avoid_: Daemon uptime, calibration window
@@ -28,6 +40,10 @@ _Avoid_: Daemon uptime, calibration window
 The single SQLite database at `/var/lib/fenris/observations.db` that persists the observation history, monitoring periods, hour observations, day aggregates, and endurance baseline.
 _Avoid_: Data directory, history.jsonl, the database (generic)
 
+**Pending publication**:
+The condition where valid acquired observations are retained for recovery but their dependent evidence has not yet been published consistently. Those observations are not part of the reader-visible observation history until publication succeeds; readers retain the last consistent evidence with the pending condition made explicit.
+_Avoid_: Successful collection, fresh published evidence
+
 **Store fault**:
 The condition where the observation store is present but cannot be read or trusted — unreadable, corrupt, or written by a newer Fenris — degrading every view that depends on it rather than crashing or guessing.
 _Avoid_: Database error, corruption, broken data
@@ -40,6 +56,22 @@ _Avoid_: Hourly record, hourly.jsonl entry
 One row per UTC day derived from hour observations; the grain at which usage-habit evidence is judged.
 _Avoid_: Daily summary, daily stats
 
+**Local-day evidence**:
+Measured read and write activity attributable to a local calendar day with its recorded timezone and midnight boundaries. Known volumes remain incomplete when gaps or shared local-day evidence prevent an exact total; they are not estimates of the missing activity.
+_Avoid_: Estimated daily total, localised UTC day aggregate
+
+**Shared local-day evidence**:
+Measured read or write volume spanning a local midnight that cannot honestly be allocated to either adjacent day. It is retained once, separately from either day's known volume, rather than prorated or counted in both days.
+_Avoid_: Missing bytes, estimated midnight split
+
+**Activity selection**:
+The read/write measurement, date and point being inspected in live or historical drive activity. Live activity follows the newest point until deliberate inspection pins a point; historical selection survives refresh, while an expired live pin is explained before following resumes.
+_Avoid_: Projection window, current usage habit
+
+**Activity readout**:
+The ready-to-read account of an activity selection: measured read and write volume, thermal evidence, usage-habit split, coverage and drive warnings for the selected live interval, local hour or local day, expressed in local time with its timezone.
+_Avoid_: Graph data, view model
+
 **Usage-history window**:
 An exact consecutive span of UTC calendar days ending today, shown from day aggregates; a day without trustworthy evidence remains an explicit gap rather than disappearing or being estimated.
 _Avoid_: Available records, dataset range
@@ -77,7 +109,7 @@ A sustained divergence between recent and earlier daily write rates that starts
 _Avoid_: Spike, anomaly
 
 **Scenario range**:
-The spread of lifespan projections computed from the 7-, 28-, and 90-day horizons of the observation history, shown in place of a statistical interval.
+The spread of lifespan projections computed from the horizons the observation history covers — 24-hour and 3-day horizons until a 7-day horizon exists, then 7-, 28-, and 90-day horizons — shown in place of a statistical interval.
 _Avoid_: Confidence interval, error bar
 
 **Coverage**:

README.md

@@ -22,7 +22,7 @@ The Gitea instance Debian registry signs metadata with its own key. Verify the
 instance key fingerprint (TOFU hardening):
 
 ```text
-Fingerprint: <print after first release — paste beside the curl one-liner>
+Fingerprint: F937E81D2FB0736B15BC611884BEBD586DFAC010
 ```
 
 Add the instance key and repository:
@@ -257,8 +257,9 @@ is retried at the next interval; it never fabricates missing observations.
 Preview uses synthetic observations, not measurements from a real drive.
 
 The Chalktone dashboard opens with a large **Live** activity plot. **Day** shows
-hourly evidence for a selected date, labelled UTC, and **History** shows daily
+hourly evidence for a selected date, and **History** shows daily evidence. Every
-evidence. Local-day totals keep their recorded timezone. Dotted traces show
+time is local, labelled with its timezone, and the selected-point readout adds
+a secondary UTC line. Local-day totals keep their recorded timezone. Dotted traces show
 measured read/write volumes, not transfer speed; missing evidence breaks the
 trace. `?` marks a gap, `~` a partial total, and `u` unallocated daily volume.
 Use the selected-point readout for exact values and evidence state.
@@ -270,16 +271,27 @@ shows incomplete or unavailable dates without treating them as zero. Older
 UTC-only summaries cannot establish exact local-day totals.
 
 - `v` cycles Live / Day / History; the tabs are also clickable.
-- `←` / `→` inspect points; `w` switches read/write volume in every view.
+- `←` / `→` inspect points, `Home` / `End` jump to the first or last point, and
+  `PgUp` / `PgDn` jump a week in Day and History (the live window is three
+  hours); the mouse wheel moves the selection too. `w`
+  switches read/write volume in every view.
+- `i` swaps the Drive pane for a Diagnostics panel built from the stored
+  evidence: the decoded `critical_warning`, power-on hours, power cycles,
+  unsafe shutdowns, media errors and available spare with their change over the
+  selection, and per-hour (Day) or per-day (History) temperature min/avg/max,
+  active / idle / powered-off / unknown split and coverage. History bars then
+  draw reads beside writes. A set `critical_warning` also shows as a badge in
+  the endurance outlook; it never changes the projection.
 - `[` / `]` browse dates, `g` enters a date, and `t` returns to today/live.
-- `Tab` / `Shift+Tab` move focus; `z` expands the focused panel, and `z` or
+- `Tab` / `Shift+Tab` move focus between panels (clicking a panel focuses it);
-  `Esc` restores it. Monitoring status and controls remain visible.
+  `z` expands the focused panel, and `z` or `Esc` restores it. Monitoring status and controls remain visible.
 - `s` cycles Chalktone, Amber, Nord, and High Contrast; saved theme preferences
   survive upgrades. `m` toggles reduced motion.
 
 On smaller terminals, textual summaries and scrollable panels keep evidence
 accessible. Pause, resume, collect, disclosures, help, and quit remain available
-in the fixed control row.
+in the fixed control row, which collapses to `? help · q quit` under 80×24. `?`
+lists every key; the footer and help are generated from the same bindings.
 
 Run `fenris` as your normal user to open the TUI dashboard. The dashboard does
 not need `sudo`. Use `sudo` for package installation and system configuration;

docs/adr/0011-preserve-unpublished-observations.md

@@ -0,0 +1,20 @@
+# 11. Preserve valid unpublished observations without exposing partial history
+
+Status: Accepted; implemented on `main` for the planned v0.6.0 release (commit `e22b994`).
+
+A non-invariant derivation failure must not discard valid acquired observations or report a successful collection: retain the observations as pending publication in the existing observation store and retry through the normal scheduled collection path. Readers continue to see the last consistent published evidence, with an explicit pending-publication explanation, rather than combining newly acquired counters with older derived totals. This trades recovery bookkeeping for preservation of measured evidence and consistent read views; neither discarding every valid acquisition on derivation failure nor exposing partially derived history satisfies both requirements.
+
+## Constraints
+
+- The publication distinction applies to every dependent reader, including activity, freshness, controller-segment interpretation and projection inputs, not just the graph. ADR 0001's freshest-sample signal means the freshest published sample; an unpublished observation must not make published evidence appear fresh.
+- Pending-work bookkeeping qualifies ADR 0005's recovery-without-new-state wording: it records unfinished evidence publication, not a new health grade or escalation mechanism. Last-collection outcomes still come from the existing native monitoring and logging paths.
+- Invariant violations retain [ADR 0005](0005-failure-detection-and-recovery.md)'s write-nothing rule; retaining recoverable work is not permission to persist invalid observations. Actual store faults retain their existing refusal and degradation behavior.
+- Recovery and retention remain collector-owned. Repeated recovery must not duplicate measured volume, and required source evidence cannot be pruned before trustworthy derived evidence is durable.
+- This extends [ADR 0001](0001-observation-store-sqlite.md)'s consistent read model and [ADR 0010](0010-local-day-activity-history.md)'s preservation rule without another observation store, sampler, background process or retry cadence. Pending-work metadata is not a persisted projection or a replacement for journalled collection outcomes.
+- Pending observations use private staging separate from published samples and derived evidence inside the same observation store. This makes exclusion from ordinary reader and projection queries structural, rather than requiring each query to remember a publication filter; the exact table layout remains an implementation detail.
+
+## Bounded pending work
+
+Pending publication has a fixed initial admission capacity of 6,720 observations, equivalent to 14 days at the default three-minute cadence. This is a count limit, not an expiry rule: older pending observations are never discarded merely to admit newer ones.
+
+The collection module attempts recovery and checks capacity before invoking acquisition. If capacity remains exhausted, the collection is unsuccessful and visibly explains why no new observation was acquired; normal scheduled recovery attempts continue. This deliberately accepts a gap in new observations rather than unlimited pending growth or loss of already retained evidence. It is not a deliberate disable, changes no monitoring intent, and never permits fabricated activity across the gap.

docs/adr/0012-staged-projection-and-evidence-ladder.md

@@ -0,0 +1,29 @@
+# 12. Staged projection with an evidence ladder
+
+Status: Accepted. Amends [ADR 0002](0002-projection-model-sustained-regime.md) §2, §6, §8 and §11, and [ADR 0003](0003-service-lifecycle-and-sanctioned-toggle.md) §4 and §8 for the TUI baseline entry.
+
+## Context
+
+Under ADR 0002 as implemented, a fresh install showed no usage-adjusted theoretical lifespan until a manual baseline existed and a complete local observation day had passed. Confidence then stayed Limited until two scenario horizons existed, about 28 days. Users read this as Fenris being slow and its confidence never moving. The architecture review of 2026-10-02 also found that the TUI and CLI each pre-gated the projection with rules the projection itself does not use.
+
+## Decision
+
+1. **Projection stages.** The projection reports one projection stage: no observations yet, provisional, warming, limited, supported, or unavailable. Provisional and warming add to ADR 0002's three confidence states, which remain the categorical judgement once warm-up ends. Callers render the stage. They never pre-gate.
+2. **First number after 3 observed hours.** A provisional projection appears once at least 3 hours of hour observations with samples exist. Until 24 hours are observed, it carries the fact "daily cycle not yet seen". From 24 hours until ADR 0002's 14-qualifying-day warm-up completes, the stage is warming. The complete-local-day condition is a contributing fact, not a gate. The rate formula is unchanged; only the evidence span is shorter.
+3. **Short horizons.** Until a 7-day horizon is covered, the scenario range uses 24-hour and 3-day horizons, each shown only once covered. They drop out when the 7-day horizon exists. The scenario range remains the only spread shown, and still no statistical interval appears.
+4. **Horizon agreement over existing horizons.** As ADR 0002 §8 already says, agreement is judged across the horizons that exist. A single 7-day horizon passes, so Supported is reachable at 14 qualifying days when every other condition holds.
+5. **Evidence ladder.** Each Supported condition from ADR 0002 §8 is reported as met or unmet with its reason. The headline shows a count of conditions met, and the outlook shows the full ladder. Confidence is never a percentage.
+6. **Write rate without a baseline.** When no endurance baseline applies, the sustained-regime write rate is shown in place of a lifespan. No baseline is synthesized.
+7. **TUI baseline entry.** The TUI offers an unverified-override entry: rated TBW plus an optional source URL. It is persisted through `fenris-monitor baseline set` under the existing polkit action. Verified overrides with full provenance stay CLI-only.
+
+## Considered options
+
+- **Numeric confidence percentage.** Rejected: it implies precision the evidence cannot support, and ADR 0002 §8 already rejected it.
+- **Capacity-based default baseline.** Rejected: ADR 0002 dropped `capacity × 600`, and a fabricated baseline would mislabel the lifespan.
+- **Keep the complete-local-day gate.** Rejected: it delays the first number by up to 34 hours while adding nothing the provisional label and spread do not already disclose.
+
+## Consequences
+
+- Early lifespans swing widely. The provisional label, the hours observed and the short-horizon spread carry that honestly.
+- The projection module's interface becomes the single test surface for every gating rule.
+- ADR 0002 §10's implied baseline still needs two Percentage Used increments. Entering a rated TBW remains the fast path to a lifespan.

docs/install/signing-key-ceremony.md

@@ -12,7 +12,7 @@ and destruction.
 | UID | `Fenris Packaging <packaging@bongbetic.com>` |
 | Expiry | 2 years from creation |
 | Hierarchy | Single key — no master/subkey split (single maintainer, manual builds) |
-| Private key storage | Password manager only |
+| Private key storage | Gitea repository Actions secret `GPG_PRIVATE_KEY` |
 | Public key storage | `packaging/keys/fenris-packaging.asc` in-repo, release notes, docs |
 | Keyservers | Never — TOFU-over-TLS via raw URL |
 
@@ -37,71 +37,72 @@ gpg --armor --export packaging@bongbetic.com > packaging/keys/fenris-packaging.a
 gpg --fingerprint packaging@bongbetic.com
 ```
 
-Save the **private key** to the password manager immediately:
+Provision the **private key** as the repository Actions secret `GPG_PRIVATE_KEY`.
+Run the export on the trusted key-generation machine, then enter its output in
+the Gitea repository's Actions secret settings. Do not save it in the checkout,
+logs, or a runner directory. The release workflow checks its fingerprint
+against the committed public key before signing.
 
 ```bash
 gpg --armor --export-secret-keys packaging@bongbetic.com
 ```
 
-Then **delete the private key from the local keyring** — it must never persist
+After provisioning the secret, delete the private key from the key-generation
-on any build host:
+keyring:
 
 ```bash
-gpg --delete-secret-keys packaging@bongbetic.com
+gpg --batch --yes --delete-secret-keys packaging@bongbetic.com
-gpg --delete-keys packaging@bongbetic.com
+gpg --batch --yes --delete-keys packaging@bongbetic.com
 ```
 
 The committed `fenris-packaging.asc` must contain the real public key (replace
 the placeholder comments).
 
+## XBPS signing key
+
+XBPS uses a separate RSA 3072 key. Its private half is stored as the Gitea
+repository Actions secret `XBPS_SIGNING_KEY`. The corresponding public key is
+published at
+`https://git.bongbetic.com/xavierk/Fenris-xbps/raw/branch/stable/keys/fenris-xbps-signing.pub`,
+with fingerprint `SHA256:AvPMRlKMikPg75u0iKr8AUkxlfU/Ad4k/S4o2M9W4/w`.
+The secret must match that public key.
+
+The release workflow writes the key to `~/.ssh/id_xbps` to sign the XBPS
+package. A requested XBPS publication also uses the key to sign repository
+metadata. A final `always()` cleanup removes the runner copy after publication
+and release asset upload, including when an earlier step fails.
+
 ## Per-release signing flow
 
-Each release performs: **import → sign → delete**. The private key is never
+Each tagged release performs: **import → verify → sign → delete** on the
-stored on disk longer than the release takes.
+repository-scoped Gitea Actions runner. The Gitea secret remains configured;
+the runner's keyring copy is removed after the job.
 
-### Step 1: Import the private key
+### Step 1: Push the release tag
 
-Retrieve the private key from the password manager and import it:
+After updating the version and dated changelog section, push the matching tag:
 
 ```bash
-gpg --import /tmp/packaging-key-private.asc
+git push origin v<version>
-rm /f /tmp/packaging-key-private.asc   # Shred if possible
 ```
 
-### Step 2: Build and sign packages
+### Step 2: Build, verify, and sign packages
 
-The Makefile target `make release` handles signing automatically when the
+The release workflow imports `GPG_PRIVATE_KEY`, checks it against
-key is in the keyring:
+`packaging/keys/fenris-packaging.asc`, builds packages, signs the RPM and
+clearsigned checksum manifest, validates both, and publishes the release. The
+workflow imports `XBPS_SIGNING_KEY` separately and signs the XBPS package.
+XBPS publication is optional and also signs repository metadata; it requires
+host acceptance and explicit selection during workflow dispatch.
 
-```bash
+### Step 3: Verify runner cleanup
-make release    # builds, signs RPM, clearsigns SHA256SUMS, prints upload steps
-```
 
-Under the hood:
+The workflow's `always()` cleanup removes the GPG key from the runner's keyring
+and deletes `~/.ssh/id_xbps`, including after a failed job. Confirm no signing
+key remains on the runner after the release job.
 
-1. `rpmsign --addsign` signs the RPM payload with the packaging key
+The Gitea Actions secret remains the approved signing source. Do not copy it to
-   (invoked by `make sign-rpm`).
+the runner or repository outside the workflow.
-2. `sha256sum` generates the checksum manifest.
-3. `gpg --clearsign` produces `SHA256SUMS.asc` with the packaging key.
-
-### Step 3: Delete the private key
-
-Immediately after signing:
-
-```bash
-gpg --delete-secret-keys packaging@bongbetic.com
-gpg --delete-keys packaging@bongbetic.com
-```
-
-Verify the key is gone:
-
-```bash
-gpg --list-keys packaging@bongbetic.com
-# Should produce: gpg: keyblock resource ...: No such file or directory
-```
-
-The entire import → sign → delete cycle should take minutes. The private key
-must never be left in any keyring between releases.
 
 ## Key rotation (outline)
 

docs/spec/glint-dashboard-design.md

@@ -95,9 +95,10 @@ finance, email, or gallery features.
   reference does not require squeezing its entire density into small terminals.
 
 These defaults implement the confirmed choices. Date entry and inspection
-retain existing evidence precision: hourly/daily UTC evidence is labelled UTC,
+retain existing evidence precision: every time is shown in local time with its
-while local-day totals keep their recorded timezone. This visual redesign does
+timezone label and a secondary UTC line on inspection, daily bars read
-not manufacture finer or local-hour precision from coarse UTC evidence.
+local-day evidence, and local-day totals keep their recorded timezone. This
+visual redesign does not manufacture finer precision than the evidence holds.
 
 ## Smallest sufficient implementation proof
 

docs/spec/live-drive-activity.md

@@ -0,0 +1,117 @@
+## Problem Statement
+
+Fenris users cannot readily understand how much data their monitored drive reads and writes each day, inspect recent activity as it arrives, or select historical dates from the keyboard. Existing graph shortcuts depend on focus, date navigation is limited, collection and screen refresh default to five minutes, and the graph reads hourly/daily summaries rather than three-minute activity. Source inspection also identified derivation and rendering paths that can leave displayed history incomplete or stale despite newly stored readings.
+
+Users want daily data volume as the primary measurement because writes contribute to drive endurance. They also want an understandable end-of-life outlook even with limited history, without presenting an unsupported hardware-failure prediction or a misleading numerical confidence score.
+
+## Solution
+
+Show both local-day read and write totals, updating from background collection targeted every three minutes. Open on a live last-three-hours graph of written data volume, provide a read/write toggle, and support selected-day and longer-history views. Make date navigation discoverable through visible keyboard hints and clickable equivalents.
+
+Retain three-minute detail for 14 days, followed by durable hourly/daily summaries. Preserve the timezone and boundaries of historical local-day summaries, identify incomplete evidence, and never invent missing activity or divide midnight-spanning measurements by assumption.
+
+Show the usage-adjusted theoretical lifespan after one full local calendar day of observations, provided an applicable endurance baseline and usable write rate exist. Explain that this estimates remaining write endurance if observed habits continue, not a physical failure date. Present categorical projection confidence with contributing facts, including limited-history reasons.
+
+## User Stories
+
+1. As a drive owner, I want to see the amount of data written each local day, so that I can understand the activity that contributes to write endurance.
+2. As a drive owner, I want to see the amount of data read each local day, so that I can understand the drive's broader activity.
+3. As a drive owner, I want read and write totals shown separately, so that reads are not mistaken for writes consuming the endurance allowance.
+4. As a TUI user, I want data-volume units rather than transfer speed as the primary graph measurement, so that the graph answers how much data was transferred.
+5. As a TUI user, I want today's totals labelled as totals so far, so that a partial day is not presented as a completed day's usage.
+6. As a TUI user, I want the opening graph to show written volume over the last three hours, so that recent activity is visible immediately.
+7. As a TUI user, I want to switch the graph between writes and reads while both daily totals remain visible, so that I can inspect either measurement without losing context.
+8. As a TUI user, I want each new activity point to include transfers between readings, so that brief bursts between collection runs contribute to the graph.
+9. As a TUI user, I want new measurements approximately every three minutes, so that the recent-activity view stays useful while I work.
+10. As a user who closes the TUI, I want collection to continue in the background, so that reopening it shows activity gathered while I was away.
+11. As a user who reboots, I want observation history and the established monitoring lifecycle preserved, so that restarting does not erase activity or confuse monitoring state.
+12. As a keyboard user, I want `[` and `]` to select the previous and next day, so that browsing nearby dates takes one action.
+13. As a keyboard user, I want `g` to open a date field, so that I can jump directly to a historical date.
+14. As a keyboard user, I want `t` to return to today and the live view, so that I can leave historical browsing immediately.
+15. As a keyboard user, I want arrows to inspect graph points, so that I can read the volume, time, and evidence state behind a point.
+16. As a new TUI user, I want visible shortcut hints that work from normal launch, so that I do not have to discover an invisible graph-focus prerequisite.
+17. As a mouse user, I want clickable equivalents for navigation and the read/write toggle, so that I can use the same features without memorizing shortcuts.
+18. As a user entering a date, I want typing and cancelling to remain within the date-entry workflow, so that graph or monitoring shortcuts do not fire accidentally.
+19. As a user browsing history, I want background refresh to preserve my selected date and measurement, so that new activity does not interrupt inspection.
+20. As a user inspecting daily totals, I want to switch between recent detail, a selected day, and longer history, so that I can understand both short bursts and daily habits.
+21. As a user outside UTC, I want calendar navigation and timestamps expressed in labelled local time, so that the displayed day matches my calendar.
+22. As a user in a timezone with a half-hour offset, I want local-day totals based on the correct midnight boundary, so that relabelled UTC totals do not misrepresent my day.
+23. As a user experiencing a daylight-saving transition, I want real local-day boundaries respected, so that a 23-hour or 25-hour day remains understandable.
+24. As a user who changes system timezone, I want historical summaries to retain their recorded timezone and boundaries, so that old totals do not silently change meaning.
+25. As a user reviewing recent history, I want three-minute detail available for 14 days, so that I can investigate recent usage.
+26. As a user reviewing older history, I want durable hourly/daily summaries after detailed readings expire, so that long-term activity remains available.
+27. As a user with legacy history, I want dates that cannot be reconstructed at local-day precision labelled incomplete or unavailable, so that old summaries are not presented with invented precision.
+28. As a user whose readings straddle midnight, I want the measured volume preserved once and its uncertain day allocation explained, so that it is neither lost nor counted twice.
+29. As a new user with only one reading, I want an awaiting-another-reading state, so that a missing interval is not shown as zero activity.
+30. As a user with a measured zero-activity interval, I want zero distinguished from missing evidence, so that a quiet drive is not confused with a collection failure.
+31. As a user with missed collection runs, I want gaps, actual timestamps, and freshness facts, so that the graph does not imply measurements that never occurred.
+32. As a user who deliberately pauses monitoring, I want paused time excluded according to monitoring-period rules, so that the pause does not distort the observed usage habit.
+33. As a user whose controller resets or changes, I want counter and identity boundaries respected, so that unrelated readings do not create invalid activity or lifespan estimates.
+34. As a user with a store fault, I want a clear explanation instead of guessed history, so that I know which information cannot be trusted.
+35. As a drive owner, I want an estimate of the time until remaining write endurance is consumed, so that I can plan around my observed usage habit.
+36. As a new user, I want that estimate withheld until one full local calendar day has been observed, so that a few minutes of activity do not immediately produce a lifespan number.
+37. As a user who starts monitoring at noon, I want the partial first day excluded from the full-day gate, so that 24 hours since launch is not mistaken for a complete calendar day.
+38. As a user with one complete day but limited history, I want an estimate when the other inputs support it, so that I do not have to wait for high confidence before seeing an outlook.
+39. As a user with limited evidence, I want a confidence category and concrete reasons, so that I understand why an estimate may change without being shown an unjustified percentage.
+40. As a user without an applicable endurance baseline or usable write rate, I want the missing prerequisite explained, so that unavailable evidence is not disguised as merely low confidence.
+41. As a drive owner, I want the endurance estimate distinguished from a physical failure date, so that I do not treat a write-endurance projection as a hardware guarantee.
+42. As a CLI user, I want status and the TUI to agree on forecast eligibility and confidence, so that choosing a different interface does not change the facts.
+43. As a user on a narrow terminal, I want daily totals, dates, evidence labels, and controls to remain accessible, so that terminal size does not hide the information I need.
+44. As a user of existing themes and reduced-motion settings, I want those features preserved when navigation shortcuts change, so that better date controls do not remove accessibility or preferences.
+45. As a user upgrading Fenris, I want migration, repair, refresh, and pruning to preserve measured evidence without duplication, so that the new graph can be trusted across restarts and upgrades.
+
+## Implementation Decisions
+
+- Extend the existing collector, observation store, derivation, shared status/projection, service scheduling, and TUI responsibilities. The privileged collector remains the single device-acquisition and store-write owner; the TUI remains an unprivileged reader. Do not add another sampler, service, export layer, or generic plotting abstraction.
+- Set the default background collection target to three minutes on both systemd and runit. Update shared cadence/freshness semantics, scheduler definitions, user documentation, and relevant acceptance contracts together. Use actual observation timestamps: delayed runs must not be represented as perfectly spaced measurements or synthetic catch-up points.
+- Derive interval read/write volumes from compatible cumulative counters. A first reading is an anchor, not an interval. Preserve controller-segment and monitoring-period boundaries, measured zero, unknown time, deliberate disables, and unsupported evidence. Do not compute deltas across a controller identity or counter discontinuity.
+- Make successful collection publish consistent data for dependent read views, using the existing transactional and migration patterns. Ensure raw samples, affected summaries, and retained boundary evidence cannot disagree through partial publication. Validate source-level derivation gaps before implementing fixes; this spec does not claim a runtime diagnosis.
+- Keep daily read and write totals separate. The write graph is the default; a read/write toggle changes only the displayed measurement. Each live point represents measured interval volume, not instantaneous speed. Daily totals remain visible independently of graph mode, and graph selection must not redefine the projection's evidence window.
+- Open on the latest three hours. Offer selected-day and longer-history views at the precision supported by retained evidence. Selected-point readouts expose time, labelled timezone, data-volume units, and incomplete/gap state. Do not imply that a partial current day or an incompletely allocated day is a known full-day total.
+- Use `[` / `]` for previous/next day, `g` for date entry, `t` for today/live, and arrows for point inspection, with visible hints and clickable equivalents. Date entry must handle invalid or unavailable dates visibly and must not leak keystrokes into unrelated actions. Cancelling returns to the prior selection; refresh preserves historical selection until the user changes it.
+- Resolve the existing `t` theme binding in favor of the accepted today/live action. Preserve theme selection through a discoverable non-conflicting control and update help consistently. Preserve pause, resume, collect-now, disclosures, quit, and reduced-motion behavior; quitting still does not pause monitoring. No exact replacement theme shortcut was selected in the interview.
+- Preserve UTC timestamps and the established UTC hour/day evidence used by endurance calculations. Local-day activity is a separate presentation aggregate using the actual local midnight boundaries, including non-whole-hour offsets and daylight-saving transitions. Timestamp relabelling alone is insufficient.
+- Extend the existing versioned observation store to retain local-day read/write summaries with their controller identity/segment context, recorded timezone, local date, UTC boundaries, evidence state, and the information needed to explain unallocated boundary volume. These are required semantics, not prescribed table names or a finalized column layout. The collector derives durable summaries before source evidence is eligible for pruning.
+- Retain three-minute detail for 14 days and hourly/daily summaries indefinitely. Keep the boundary evidence and anchors necessary for honest derivation. Do not introduce unbounded retention of all fine-grained intervals solely to support arbitrary historical timezone reinterpretation, and do not delete existing durable evidence merely to simplify migration.
+- Preserve the timezone and boundaries recorded for historical summaries when the system timezone changes. New observations follow the current local timezone without rewriting old days; labels must make historical timezone context explicit. Do not blend differently bounded summaries into an apparently exact daily total.
+- Allocate a measured interval to a local day only when evidence supports that allocation. Preserve an ambiguous midnight-spanning delta once as shared/unallocated boundary evidence; neither prorate it nor copy its full value into both days. If only coarse legacy UTC summaries survive, show them at their actual precision and mark unreconstructable local-day totals incomplete/unavailable. Repeated derivation and repair must be idempotent.
+- Use the existing usage-adjusted theoretical lifespan model and categorical projection confidence. Forecast remaining write endurance from an applicable endurance baseline and a usable observed write rate. Lifetime-written counters consume the endurance allowance; observation-window deltas determine the usage rate. Read volume is not included in endurance consumption.
+- Add the agreed complete-observation-day gate to the shared projection contract. A completed local midnight-to-midnight day within a monitoring period with usable evidence is required; a partial first day, deliberately disabled span, or day with no usable evidence cannot independently qualify. Monday-noon setup can first qualify at Wednesday 00:00 after observing Tuesday. Real daylight-saving day boundaries apply; do not replace this with a fixed 24-hour timer.
+- Before that gate, explain that Fenris is waiting for a full local observation day. Afterward, allow an estimate with Limited confidence when the existing baseline, rate, identity, and evidence-validity rules permit it; preserve the longer warm-up and Supported-confidence requirements. Missing evidence is still evaluated under the existing validity/coverage rules: completing a date does not turn unknown measurements into known data.
+- Show confidence as a category plus contributing facts, never a numeric confidence percentage. Explain missing baseline, unusable/zero rate, stale evidence, and controller changes through their applicable states. Do not fabricate a baseline, suppress a missing prerequisite behind a generic confidence warning, or label the output as a predicted hardware-failure date. Preserve the existing baseline setup path and zero-rate explanation.
+- Preserve visible freshness, last-collection outcome, paused state, and store-fault behavior. On constrained terminals retain the existing textual fallback/reflow approach so both daily totals, the selected date, evidence state, confidence, and navigation remain accessible; colour alone must not carry meaning.
+- Migrate through the existing ordered, versioned, transactional store mechanism. Preserve observation history, refuse unknown newer schemas, establish new durable evidence before pruning, and keep readers consistent while the collector writes. Migration cannot manufacture local precision from historical data that lacks it.
+- This design amends ADR 0003's five-minute default on both native service backends under ADR 0008, adds a first-full-local-day eligibility gate to ADR 0002 while retaining its forecasting and confidence model, and extends ADR 0001 with the local-history decision recorded as ADR 0010. ADR 0005's no-fabrication/store-fault contract remains authoritative. Existing historical design documents are not evidence that the current runtime already implements these amendments.
+
+## Testing Decisions
+
+- Prefer one primary acceptance path: controlled acquisition fixtures and an injected clock enter the existing public collection operation; it writes a real temporary observation store; the normal read path supplies the TUI and CLI. Assert resulting displayed volumes, evidence states, selections, forecast eligibility, and public outcomes. Do not mock the internal derivation or query results under test. A good test would continue passing after an internal refactor and fail when a user's observed result becomes incorrect.
+- Reuse existing collector tracer and collector-history tracer fixtures, including SMART JSON, a temporary sysfs tree, the injected clock, and a real SQLite store. Compose these with the existing status reader, projection fixtures, and headless TUI driver rather than creating a new production testing interface. Fix defects that this path reproduces; do not make tests reproduce incorrect implementation arithmetic.
+- Exercise normal launch, previous/next date, direct date entry, invalid input, cancel, today/live, arrow inspection, read/write switching, refresh during historical browsing, and hourly/day navigation through user actions. Assert visible graph/readout results, not only private selection indices or row counts. In particular, do not manually force graph focus to make the advertised shortcuts work. Existing headless graph, help, theme, motion, and constrained-terminal tests provide prior art.
+- Drive known successive read/write counter changes through collection and verify exact interval volumes and aggregate totals. Cover first reading, first compatible pair, measured zero, repeated collection, repeated read/refresh, restart, same-hour accumulation, and a day-boundary crossing. Preserve each measured byte once: attributable totals plus separately retained unallocated evidence must account for the measured delta without duplication.
+- Use the same public path for local midnight, Asia/Kolkata's half-hour boundary, a 23-hour local day, a 25-hour local day, repeated local clock labels, and a system-timezone change. Verify historical labels and boundaries remain stable and ambiguous intervals are not silently divided. Add direct derivation cases only when they prove an invariant that the primary path cannot isolate clearly.
+- Advance controlled time beyond the 14-day detail window, invoke normal pruning, restart readers, and verify recent detail expiry with durable summary/boundary preservation. Use existing pruning, repair, legacy-migration, and store-migration tests for focused persistence cases that the main path cannot prove, including interruption, reruns, concurrent readers, unknown newer schema, and inability to reconstruct legacy local-day precision.
+- Test the forecast gate at concrete local times: Monday noon setup; Tuesday noon with 24 elapsed hours but no complete observed calendar day; and Wednesday 00:00 after a usable Tuesday. Include partial/disabled/unknown days and daylight-saving dates. After eligibility, verify Limited confidence with reasons and a correct estimate where inputs support one; no baseline, invalid counters, zero rate, stale evidence, and segment changes must preserve the relevant unavailable/degraded behavior. Reuse existing projection and status-parity tests.
+- Independently calculate an expected endurance result from known lifetime-written counters, a known applicable baseline, and known observed-window deltas. This guards against confusing lifetime consumption with writes inside the rate window. Rendering, browsing another day, and switching to reads must not change that accounting.
+- Add focused checks at the existing native scheduler boundary for the three-minute defaults, serialization, failures, and freshness calculations. Reuse systemd/runit control and packaging tests; use only necessary controlled platform probes to verify actual scheduled/background behavior. No live-system scheduling, pause, install, or reboot action is authorized merely by writing this spec. Report any unavailable platform verification during implementation.
+- Verify at 80×24 and below that visible totals, date entry, navigation, confidence, and evidence states remain accessible and that theme/reduced-motion controls still work. Avoid pixel-perfect snapshots and assertions about private widget layout when visible text and action results express the contract.
+- The affected modules are collection/derivation, observation-store migration and retention, shared projection/status, native service scheduling, and the TUI. Most acceptance coverage should remain at the single collection-to-visible-result path; targeted persistence and scheduler checks are supporting boundaries, not a new layer of test-only architecture.
+
+## Out of Scope
+
+- Adding SATA/HDD acquisition, another monitored device, or multi-drive management; the selected existing NVMe drive remains the source.
+- Reporting occupied/free filesystem capacity, making transfer speed the primary measurement, or treating read bytes as write-endurance consumption.
+- Forecasting today's final data volume or future daily activity; the selected forecast is the usage-adjusted theoretical lifespan.
+- Predicting a physical hardware-failure date, adding numeric confidence percentages, fabricating endurance baselines, or introducing a new forecasting algorithm when the existing model fits.
+- Interpolating missing samples, zero-filling unknown activity, prorating ambiguous midnight intervals, or retroactively rewriting historical timezone boundaries.
+- Requiring all historical dates to retain three-minute detail forever or to support arbitrary later timezone regrouping.
+- A new web UI, plotting service, generic graph framework, notifications, telemetry, theme redesign, or unrelated dashboard rework.
+- Package publication, release creation, installation, host-monitoring changes, or runtime diagnosis of the user's deployed observation store as part of this specification task.
+
+## Further Notes
+
+- This spec synthesizes the completed design conversation. The user accepted daily volume, a live three-hour opening view, the specified keyboard date workflow, local dates, 14-day detail retention, a writes-first graph with read toggle and both totals, an endurance forecast, categorical confidence, one full local observation day before forecasting, and historically labelled timezone boundaries with honest incomplete evidence.
+- Related prior issue: [Implement Fenris TUI polish and hourly history](https://git.bongbetic.com/xavierk/Fenris/issues/72). This newer accepted design supersedes its conflicting requirements for the opening graph, writes-only presentation, the `t` theme shortcut, unrestricted historical timezone regrouping, indefinite fine-grained interval retention, and the earlier projection-eligibility presentation. Preserve unrelated requirements for identity, status, themes, motion, accessibility, collector publication, evidence conservation, and CLI parity. Do not treat the older issue as a reason to undo these newly agreed choices.
+- ADR 0010 records the deliberate trade-off: retain labelled local summaries and necessary boundary evidence before detailed readings expire, rather than retaining every fine-grained interval for arbitrary future timezone reinterpretation. The design adds durable local activity evidence while retaining UTC projection evidence and the existing collector/reader ownership boundary.
+- Source inspection identified normal collection paths that do not consistently rebuild daily totals, existing-hour updates that omit read deltas, cross-day deltas added to both dates, and drill-down rendering overwritten by a loading placeholder. These are concrete investigation/regression targets, not claims of executed reproductions or deployed-store corruption.
+- The user confirmed the existing collector-to-store-to-TUI/CLI test boundary, with focused migration/pruning and scheduler checks where needed. Publication is an implementation handoff; no application behavior or test result is claimed solely by creating this issue.

docs/spec/release-packaging.md

@@ -44,7 +44,8 @@
 - **RPM payload: signed.** rpmsign with the dedicated packaging key, invoked by `make sign-rpm` after the package is built. This is required, not optional: it is the only working dnf-native verification path.
 - **deb: unsigned.** apt never verifies payload signatures; trust = instance-signed `InRelease` (signed-by keyring) + TLS + Acquire-By-Hash. Manual-download integrity is covered by SHA256SUMS.
 - **SHA256SUMS: clearsigned** with the packaging key — the trust anchor for manually downloaded release assets, independent of TLS.
-- **Packaging key:** single dedicated key, RSA 3072, UID `Fenris Packaging <packaging@bongbetic.com>`, 2-year expiry, no master/subkey hierarchy (single maintainer, manual builds). Private key lives in the password manager only; each release does import → sign → delete — nothing permanent on any build host. The full ceremony is documented in `docs/install/signing-key-ceremony.md`.
+- **Packaging key:** single dedicated key, RSA 3072, UID `Fenris Packaging <packaging@bongbetic.com>`, 2-year expiry, no master/subkey hierarchy. The private key is stored as the repository Actions secret `GPG_PRIVATE_KEY`. The release workflow imports it on the self-hosted runner, verifies it against the in-repo public key, signs the RPM and SHA256SUMS, then deletes the runner's keyring copy in an `always()` cleanup step. The full ceremony is documented in `docs/install/signing-key-ceremony.md`.
+- **XBPS key:** separate RSA 3072 key stored as the repository Actions secret `XBPS_SIGNING_KEY`; its public key and fingerprint are published in `Fenris-xbps`. The release workflow uses it for the XBPS package and, when publication is explicitly requested, the repository index. A final `always()` cleanup deletes its runner copy after publication and release asset upload.
 - **Public key publication:** in-repo `packaging/keys/fenris-packaging.asc` (raw URL doubles as the `.repo` gpgkey target), release notes, docs page. No keyservers — TOFU-over-TLS.
 - **Rotation (outline):** new key published alongside old; rpm signed with the new key; `fenris.repo` gpgkey lists both URLs (dnf accepts multiple); old key dropped after one release cycle. Procedure details stay in map fog.
 
@@ -53,9 +54,9 @@
 - **A Release is:** a version tag, its packages in the channel, a Gitea release entry with notes, and a clearsigned SHA256SUMS — all together. **Bare tags are forbidden** (tag without packages + release entry is not a Release).
 - **Cadence: on-demand.** Tag when user-visible changes or fixes accumulate; no calendar, no empty releases, no frequency SLA, no RC ceremony — fixes ship as a revision bump of the current version.
 - **Versioning: plain semver.** Major = breaking CLI/config/unit change; store schema changes ride the natural bump (the forward-only refusal handles old-reader/new-store).
-- **Promotion flow:** tag → `make release` (automated: `make package` → RPM signing via nfpm → SHA256SUMS generation → clearsign → prints registry PUTs + Gitea release steps). The ceremony is documented in `docs/install/signing-key-ceremony.md`.
+- **Promotion flow:** bump `pyproject.toml` and the matching dated `CHANGELOG.md` section, then push tag `v<version>`. The repository-scoped Gitea Actions workflow builds and validates the deb, rpm, checksums, and release entry. XBPS publication remains a manual dispatch option after host acceptance. `make release` is for local artifact preparation and does not replace the tag workflow as the supported publication path. The ceremony is documented in `docs/install/signing-key-ceremony.md`.
 - **Rollback:** installing an older package over a newer store is **unsupported** — the store's forward-only version refusal fails it by design. Documented rollback = restore the observation-store snapshot, then install the old Release. No automatic downgrade machinery exists or will be built.
-- **CI:** no runners are registered on the instance today ([Actions runner research](https://git.bongbetic.com/xavierk/Fenris/issues/37)), so the manual flow above is primary. A dormant `.gitea/workflows/release.yml` (`on: push: tags: ['v*']`, single job, host-mode runner) is committed alongside; if it fires, it replicates `make release`. Cheapest future upgrade: one `act_runner` static binary in host-label mode on the existing Gitea host.
+- **CI:** a repository-scoped self-hosted runner is registered and online (checked 2026-09-29). `.gitea/workflows/release.yml` is the tag-triggered release path; maintainers must confirm runner availability and required Gitea secrets before tagging. The workflow publishes deb/rpm packages and release assets; Void publication is withheld unless the signed XBPS host-release step is explicitly requested.
 
 ## 6. Package layout and ownership
 

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "fenris"
-version = "0.5.0"
+version = "0.7.0"
 description = "NVMe wear monitor with persistent TUI"
 requires-python = ">=3.10"
 license = {file = "LICENSE"}
@@ -13,8 +13,12 @@ dev = [
     "pytest>=7.0.0",
     "pytest-cov>=4.0.0",
     "pytest-asyncio>=0.20.0",
+    "ruff==0.16.10",
 ]
 
+[tool.ruff.lint]
+select = ["E4", "E7", "E9", "F"]
+
 [tool.pytest.ini_options]
 testpaths = ["tests"]
 python_files = ["test_*.py"]

src/fenris/activity_plot.py

@@ -21,13 +21,19 @@ class VolumePoint:
 def volume_plot(
     points: Sequence[VolumePoint], width: int, height: int,
     selected: int, colors: Mapping[str, str],
+    secondary: Sequence[VolumePoint] | None = None,
 ) -> tuple[Text, list[int], str]:
-    """Render bounded axes and a dotted trace, without resampling evidence."""
+    """Render bounded axes and a dotted trace, without resampling evidence.
+
+    *secondary* is a second series over the same time axis (reads beside
+    writes); it shares the volume scale and draws in its own colour.
+    """
     width, height = max(12, width), max(4, height)
     axis_width = 8
     columns, rows = width - axis_width, height - 2
     pixel_width, pixel_height = columns * 2, rows * 4
-    maximum = max((p.volume or 0 for p in points), default=0)
+    maximum = max(
+        (p.volume or 0 for p in (*points, *(secondary or ()))), default=0)
     scale, unit = (1e12, "TB") if maximum >= 1e12 else (
         (1e9, "GB") if maximum >= 1e9 else
         (1e6, "MB") if maximum >= 1e6 else
@@ -39,11 +45,16 @@ def volume_plot(
     xs = [round((p.time - start) / span * (pixel_width - 1)) if span else 0
           for p in points]
     cells = [[0] * columns for _ in range(rows)]
+    second = [[0] * columns for _ in range(rows)]
     # Unicode braille dot numbering, indexed by y within cell and then x.
     bits = ((1, 8), (2, 16), (4, 32), (64, 128))
 
-    def dot(x: int, y: int) -> None:
+    def dot(x: int, y: int, grid: list[list[int]] = cells) -> None:
-        cells[y // 4][x // 2] |= bits[y % 4][x % 2]
+        grid[y // 4][x // 2] |= bits[y % 4][x % 2]
+
+    def y_of(volume: int) -> int:
+        y = round((1 - volume / ceiling) * (pixel_height - 1))
+        return min(pixel_height - 1, max(0, y))
 
     previous = None
     markers = {}
@@ -53,8 +64,7 @@ def volume_plot(
             if point.state != "future":
                 markers[x // 2] = "?"
             continue
-        y = round((1 - point.volume / ceiling) * (pixel_height - 1))
+        y = y_of(point.volume)
-        y = min(pixel_height - 1, max(0, y))
         if previous is not None and point.state == "measured":
             px, py = previous
             steps = max(abs(x - px), abs(y - py), 1)
@@ -68,6 +78,21 @@ def volume_plot(
         elif point.volume == 0:
             markers.setdefault(x // 2, "·")
 
+    previous = None
+    for point, x in zip(secondary or (), xs):
+        if point.volume is None:
+            previous = None
+            continue
+        y = y_of(point.volume)
+        if previous is not None and point.state == "measured":
+            px, py = previous
+            steps = max(abs(x - px), abs(y - py), 1)
+            for step in range(steps + 1):
+                dot(round(px + (x - px) * step / steps),
+                    round(py + (y - py) * step / steps), second)
+        dot(x, y, second)
+        previous = (x, y) if point.state == "measured" else None
+
     selected_column = xs[selected] // 2 if 0 <= selected < len(xs) else -1
     result = Text(no_wrap=True, overflow="crop")
     ticks = {0, rows // 2, rows - 1}
@@ -76,8 +101,10 @@ def volume_plot(
         label = f"{value:6.2f}"[-6:] if row in ticks else "      "
         result.append(label + " │", style=colors["muted"])
         for col, value in enumerate(values):
-            char = chr(0x2800 + value) if value else " "
+            extra = second[row][col]
-            style = colors["allocated"]
+            char = chr(0x2800 + (value | extra)) if value | extra else " "
+            style = colors["allocated"] if value or not extra else colors["secondary"]
+            value |= extra
             if col == selected_column:
                 style = "bold " + colors["selection"]
                 if not value:

src/fenris/activity_selection.py

@@ -3,6 +3,8 @@ from collections.abc import Sequence
 from dataclasses import dataclass
 
 HISTORY_RANGE_DEFAULT = 14
+HISTORY_RANGE_OPTIONS = (7, 14, 30, 90)
+HISTORY_RANGE_MAX = max(HISTORY_RANGE_OPTIONS)
 
 
 @dataclass(frozen=True)
@@ -33,6 +35,7 @@ class ActivitySelection:
         self.selected_history_hour: str | None = None
         self.history_range_days = HISTORY_RANGE_DEFAULT
         self.measure = "written"
+        self.diagnostics = False
         self.following_live = True
         self.selected_live_interval: IntervalIdentity | None = None
         self.live_interval_expired = False
@@ -72,6 +75,11 @@ class ActivitySelection:
         self.measure = "read" if self.measure == "written" else "written"
         return self.measure
 
+    def toggle_diagnostics(self) -> bool:
+        """Show or hide the Diagnostics panel and read-beside-write bars."""
+        self.diagnostics = not self.diagnostics
+        return self.diagnostics
+
     def follow_live(self) -> None:
         """Resume following the newest interval and clear stale-pin notices."""
         self.view = "live"

src/fenris/collect.py

@@ -27,7 +27,7 @@ if VENV_DIR.exists():
         if site_packages:
             sys.path.insert(0, str(site_packages))
 
-from fenris.collector import run_collection
+from fenris.collector import run_collection  # noqa: E402 -- must follow the sys.path bootstrap above
 
 
 CONFIG_PATH = Path("/etc/fenris/fenris.conf")

src/fenris/collector.py

@@ -19,7 +19,7 @@ from typing import Any, Dict, Optional
 
 from .derive import derive_hours_from_interval, find_previous_sample
 from .monitoring_periods import ensure_period_open
-from .store import init_store, get_store_path
+from .store import DIAGNOSTIC_SAMPLE_COLUMNS, init_store, get_store_path
 
 
 class AcquisitionError(Exception):
@@ -103,6 +103,8 @@ def acquire_from_smartctl(smartctl_data: Dict[str, Any]) -> Dict[str, Any]:
         "bytes_written": log["data_units_written"] * 512000,
         "bytes_read": log["data_units_read"] * 512000,
         "critical_warning": log.get("critical_warning", 0),
+        # Diagnostic counters (issue #111); absent keys stay None, never zero.
+        **{column: log.get(column) for column in DIAGNOSTIC_SAMPLE_COLUMNS},
     }
 
 
@@ -252,6 +254,7 @@ def write_sample(
     segment_id = current_segment["id"] if current_segment else None
     
     # Insert sample with segment_id
+    # nosemgrep: python.sqlalchemy.security.sqlalchemy-execute-raw-query.sqlalchemy-execute-raw-query -- columns come from module constants, values are bound
     cursor = conn.execute(
         """
         INSERT INTO samples (
@@ -259,9 +262,10 @@ def write_sample(
             percentage_used, available_spare, media_errors, power_on_hours,
             power_cycles, unsafe_shutdowns, temperature_c,
             data_units_written, data_units_read, bytes_written, bytes_read,
-            critical_warning, segment_id, local_tz
+            critical_warning, segment_id, local_tz, %s
-        ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+        ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, %s)
-        """,
+        """ % (", ".join(DIAGNOSTIC_SAMPLE_COLUMNS),
+               ", ".join("?" * len(DIAGNOSTIC_SAMPLE_COLUMNS))),
         (
             sample["ts"],
             sample["device"],
@@ -284,6 +288,8 @@ def write_sample(
             sample["critical_warning"],
             segment_id,
             sample.get("local_tz"),
+            # Samples staged by an earlier version lack these keys.
+            *(sample.get(column) for column in DIAGNOSTIC_SAMPLE_COLUMNS),
         ),
     )
     
@@ -382,6 +388,7 @@ def _stage_observation(
         separators=(",", ":"),
         sort_keys=True,
     )
+    # nosemgrep: python.sqlalchemy.security.sqlalchemy-execute-raw-query.sqlalchemy-execute-raw-query -- columns come from module constants, values are bound
     cursor = conn.execute(
         "INSERT INTO pending_publications (sample_ts, payload) VALUES (?, ?)",
         (sample["ts"], payload),

src/fenris/day_aggregate.py

@@ -9,7 +9,7 @@ usage-habit classification is known rather than unknown (§5.3).
 """
 import sqlite3
 from dataclasses import dataclass
-from datetime import datetime, timedelta, timezone
+from datetime import datetime, timedelta
 
 
 @dataclass(frozen=True)

src/fenris/derive.py

@@ -12,7 +12,7 @@ No proportional allocation, endpoint assignment, or double counting.
 """
 import sqlite3
 from datetime import datetime, timedelta, timezone
-from typing import Any, Dict, List, Optional, Tuple
+from typing import Any, Dict, List, Optional
 
 from .hour_classify import classify_hour, HourSplit
 

src/fenris/init_system.py

@@ -26,7 +26,6 @@ Runit guarantees:
 Spec: §8.4, §8.5, §8.6, §8.7, §8.8, ADR 0008
 """
 import os
-import shutil
 import subprocess
 import sys
 from enum import Enum

src/fenris/legacy.py

@@ -18,11 +18,10 @@ import logging
 import sqlite3
 from datetime import datetime, timezone
 from pathlib import Path
-from typing import Any, Dict, List, Optional, Tuple
+from typing import Any, Dict, List, Optional
 
 from .hour_classify import classify_hour
-from .segment import open_segment, normalize_identity
+from .segment import open_segment
-from .monitoring_periods import close_period
 
 logger = logging.getLogger(__name__)
 

src/fenris/local_day.py

@@ -33,6 +33,11 @@ from itertools import pairwise
 from typing import Any
 from zoneinfo import ZoneInfo
 
+from .monitoring_periods import (
+    as_utc_datetime,
+    interval_within_one_monitoring_period,
+)
+
 
 @dataclass(frozen=True)
 class LocalDaySummary:
@@ -308,27 +313,13 @@ def persist_local_day(
     return created
 
 
-def _utc_datetime(value: str | datetime) -> datetime:
-    parsed = value if isinstance(value, datetime) else datetime.fromisoformat(value)
-    if parsed.tzinfo is None:
-        parsed = parsed.replace(tzinfo=timezone.utc)
-    return parsed.astimezone(timezone.utc)
-
-
 def _same_monitoring_period(
     conn: sqlite3.Connection,
     start: datetime,
     end: datetime,
 ) -> bool:
     """Return whether one recorded monitoring period contains the interval."""
-    for started_at, ended_at in conn.execute(
+    return interval_within_one_monitoring_period(conn, start, end)
-        "SELECT started_at, ended_at FROM monitoring_periods"
-    ):
-        period_start = _utc_datetime(started_at)
-        period_end = _utc_datetime(ended_at) if ended_at else None
-        if period_start <= start and (period_end is None or end <= period_end):
-            return True
-    return False
 
 
 def repair_legacy_local_day_evidence(conn: sqlite3.Connection) -> int:
@@ -365,13 +356,13 @@ def repair_legacy_local_day_evidence(conn: sqlite3.Connection) -> int:
     segment_windows = {}
     if {"monitoring_periods", "controller_segments"}.issubset(tables):
         periods = [
-            (_utc_datetime(start), _utc_datetime(end) if end else None)
+            (as_utc_datetime(start), as_utc_datetime(end) if end else None)
             for start, end in conn.execute(
                 "SELECT started_at, ended_at FROM monitoring_periods"
             )
         ]
         segment_boundaries = [
-            (segment_id, _utc_datetime(opened_at))
+            (segment_id, as_utc_datetime(opened_at))
             for segment_id, opened_at in conn.execute(
                 "SELECT id, opened_at FROM controller_segments ORDER BY opened_at, id"
             )
@@ -399,11 +390,11 @@ def repair_legacy_local_day_evidence(conn: sqlite3.Connection) -> int:
         )
         samples = [
             {
-                "id": row[0], "ts": _utc_datetime(row[1]),
+                "id": row[0], "ts": as_utc_datetime(row[1]),
                 "bytes_written": row[2], "bytes_read": row[3],
                 "segment_id": row[4], "local_tz": row[5],
             }
-            for row in conn.execute(sample_select)
+            for row in conn.execute(sample_select)  # nosemgrep: sqlalchemy-execute-raw-query -- query text is built from constant fragments only; no external input
         ]
         for previous, current in pairwise(samples):
             start = previous["ts"]
@@ -453,8 +444,8 @@ def repair_legacy_local_day_evidence(conn: sqlite3.Connection) -> int:
             "id": row[0],
             "local_date": row[1],
             "tz_name": row[2],
-            "start": _utc_datetime(row[3]),
+            "start": as_utc_datetime(row[3]),
-            "end": _utc_datetime(row[4]),
+            "end": as_utc_datetime(row[4]),
             "precision": row[6],
         }
         for row in recorded_days
@@ -482,8 +473,8 @@ def repair_legacy_local_day_evidence(conn: sqlite3.Connection) -> int:
             local_day_id, local_date, tz_name, utc_start, utc_end,
             prior_incomplete,
         ) = row
-        start = _utc_datetime(utc_start)
+        start = as_utc_datetime(utc_start)
-        end = _utc_datetime(utc_end)
+        end = as_utc_datetime(utc_end)
         matching = matching_by_day[local_day_id]
 
         if not matching:
@@ -595,8 +586,8 @@ def _record_reconstructed_shared_intervals(
     day_rows = [
         {
             "id": row[0], "local_date": row[1], "tz_name": row[2],
-            "utc_start": _utc_datetime(row[3]),
+            "utc_start": as_utc_datetime(row[3]),
-            "utc_end": _utc_datetime(row[4]),
+            "utc_end": as_utc_datetime(row[4]),
             "precision": row[6],
         }
         for row in recorded_days
@@ -685,7 +676,7 @@ def _coarse_local_day_activity(
     full_hours: dict[datetime, tuple] = {}
     boundary_hour_found = False
     other_day_bounds = [
-        (_utc_datetime(row[0]), _utc_datetime(row[1]))
+        (as_utc_datetime(row[0]), as_utc_datetime(row[1]))
         for row in conn.execute(
             "SELECT utc_start, utc_end FROM local_days WHERE id != ?",
             (local_day_id,),
@@ -698,7 +689,7 @@ def _coarse_local_day_activity(
         "FROM hour_observations WHERE hour >= ? AND hour < ? ORDER BY hour",
         (first_hour.isoformat(), day_end.isoformat()),
     ):
-        hour_start = _utc_datetime(row[0])
+        hour_start = as_utc_datetime(row[0])
         hour_end = hour_start + hour
         if hour_start >= day_end or hour_end <= day_start:
             continue
@@ -856,8 +847,8 @@ def record_local_activity_interval(
     both samples share one monitoring period, and the interval stays inside one
     recorded local date. Every other valid difference remains one unallocated row.
     """
-    start = _utc_datetime(previous["ts"])
+    start = as_utc_datetime(previous["ts"])
-    end = _utc_datetime(current["ts"])
+    end = as_utc_datetime(current["ts"])
     if end <= start:
         return None
 
@@ -1004,12 +995,12 @@ def mark_local_activity_gap(
     previous: dict | None = None,
 ) -> None:
     """Mark dates around a controller boundary as missing local activity."""
-    current = _utc_datetime(current_ts)
+    current = as_utc_datetime(current_ts)
     current_date = current.astimezone(ZoneInfo(current_tz)).date().isoformat()
     _upsert_activity_day(conn, current_date, current_tz, incomplete=True)
     if previous is None or not previous.get("local_tz"):
         return
-    previous_at = _utc_datetime(previous["ts"])
+    previous_at = as_utc_datetime(previous["ts"])
     previous_tz = previous["local_tz"]
     previous_date = previous_at.astimezone(ZoneInfo(previous_tz)).date().isoformat()
     _upsert_activity_day(conn, previous_date, previous_tz, incomplete=True)
@@ -1027,7 +1018,7 @@ def query_local_day_summary(
     """
     tz_filter = " AND tz_name = ?" if tz_name else ""
     params = (local_date, tz_name) if tz_name else (local_date,)
-    row = conn.execute(
+    row = conn.execute(  # nosemgrep: sqlalchemy-execute-raw-query -- only constant fragments are concatenated; values are bound via ? placeholders
         "SELECT local_date, tz_name, tz_offset, utc_start, utc_end, "
         "       bytes_written, bytes_read, coverage, sample_count, complete, "
         "       activity_seconds, activity_intervals, activity_incomplete, "
@@ -1127,7 +1118,7 @@ def query_local_day_summary(
             == recorded_date
         )
         day_seconds = int(
-            (_utc_datetime(utc_end) - _utc_datetime(utc_start)).total_seconds()
+            (as_utc_datetime(utc_end) - as_utc_datetime(utc_start)).total_seconds()
         )
         interval_seconds = activity_seconds or 0
         full_activity_day = interval_seconds >= day_seconds or (

src/fenris/monitor.py

@@ -31,13 +31,14 @@ if VENV_DIR.exists():
         if site_packages:
             sys.path.insert(0, str(site_packages))
 
-from fenris.store import init_store, get_store_path
+from fenris.store import init_store  # noqa: E402 -- must follow the sys.path bootstrap above
-from fenris.monitoring_periods import (
+from fenris.timefmt import local_timestamp, local_zone_name  # noqa: E402 -- sys.path bootstrap above
+from fenris.monitoring_periods import (  # noqa: E402 -- sys.path bootstrap above
     ensure_period_open,
     close_period,
     get_open_period,
 )
-from fenris.init_system import (
+from fenris.init_system import (  # noqa: E402 -- sys.path bootstrap above
     enable_timer,
     disable_timer,
     collect_now,
@@ -70,7 +71,7 @@ def cmd_enable(args: argparse.Namespace) -> None:
         if open_period is None:
             ensure_period_open(conn, now)
             conn.commit()
-            print("Monitoring period opened at", now.isoformat())
+            print("Monitoring period opened at", local_timestamp(now, local_zone_name()))
         else:
             print("Monitoring period already open (id=%d)" % open_period["id"])
 

src/fenris/monitoring_periods.py

@@ -9,7 +9,7 @@ Key contracts:
 - End causes: user_disabled, migrated, unknown_gap
 """
 import sqlite3
-from datetime import datetime
+from datetime import datetime, timezone
 
 
 def ensure_period_open(conn: sqlite3.Connection, run_time: datetime) -> None:
@@ -82,6 +82,46 @@ def is_inside_period(conn: sqlite3.Connection, ts: datetime) -> bool:
     return cursor.fetchone() is not None
 
 
+def interval_within_one_monitoring_period(
+    conn: sqlite3.Connection,
+    start: str | datetime,
+    end: str | datetime,
+) -> bool:
+    """Return whether one monitoring period contains the full interval.
+
+    Compare timestamps as UTC instants. Malformed timestamps fail closed.
+    """
+    try:
+        interval_start = as_utc_datetime(start)
+        interval_end = as_utc_datetime(end)
+    except (TypeError, ValueError, OverflowError):
+        return False
+    if interval_end <= interval_start:
+        return False
+
+    for started_at, ended_at in conn.execute(
+        "SELECT started_at, ended_at FROM monitoring_periods"
+    ):
+        try:
+            period_start = as_utc_datetime(started_at)
+            period_end = as_utc_datetime(ended_at) if ended_at is not None else None
+        except (TypeError, ValueError, OverflowError):
+            continue
+        if period_start <= interval_start and (
+            period_end is None or interval_end <= period_end
+        ):
+            return True
+    return False
+
+
+def as_utc_datetime(value: str | datetime) -> datetime:
+    """Parse a timestamp and normalize it to an aware UTC datetime."""
+    parsed = value if isinstance(value, datetime) else datetime.fromisoformat(value)
+    if parsed.tzinfo is None:
+        parsed = parsed.replace(tzinfo=timezone.utc)
+    return parsed.astimezone(timezone.utc)
+
+
 def wall_clock_in_periods(
     conn: sqlite3.Connection,
     start: datetime,

src/fenris/projection.py

@@ -20,20 +20,29 @@ Arithmetic (§6.3):
   E_rated   = entered_TBW × 10¹² bytes
   E_implied = 100 · W_t / p                       (1 ≤ p ≤ 254)
 
+Staging (ADR 0012): the result carries a projection stage, the evidence
+ladder (each Supported condition met or unmet with its reason) and the
+sustained-regime write rate, so callers render the stage and never
+pre-gate the projection themselves.
+
 Criteria: PR-1–PR-17, CI-4.
 """
 import sqlite3
 from dataclasses import dataclass, field
-from datetime import datetime, timedelta, timezone
+from datetime import datetime, timedelta
 from enum import Enum
-from typing import Any, Dict, List, Optional, Tuple
+from typing import Any, Dict, List, Optional
 
+from .monitoring_periods import interval_within_one_monitoring_period
 
 # ---------------------------------------------------------------------------
 # Constants (spec §6)
 # ---------------------------------------------------------------------------
 
 HORIZON_DAYS = (7, 28, 90)
+SHORT_HORIZON_DAYS = (1, 3)
+PROVISIONAL_MIN_HOURS = 3
+DAILY_CYCLE_HOURS = 24
 TBW_TO_BYTES = 10 ** 12
 IMPLIED_P_MIN = 1
 IMPLIED_P_MAX = 254
@@ -61,6 +70,15 @@ class ConfidenceState(Enum):
     SUPPORTED = "Supported"
 
 
+class ProjectionStage(Enum):
+    NO_OBSERVATIONS = "No observations yet"
+    PROVISIONAL = "Provisional"
+    WARMING = "Warming"
+    LIMITED = "Limited"
+    SUPPORTED = "Supported"
+    UNAVAILABLE = "Unavailable"
+
+
 class BaselineTier(Enum):
     VERIFIED = "verified_override"
     UNVERIFIED = "unverified_override"
@@ -76,6 +94,14 @@ class ScenarioRange:
     horizon_reasons: Dict[int, str] = field(default_factory=dict)
 
 
+@dataclass(frozen=True)
+class LadderCondition:
+    """One Supported condition from ADR 0002 §8, met or unmet with its reason."""
+    name: str
+    met: bool
+    reason: str
+
+
 @dataclass(frozen=True)
 class ProjectionResult:
     confidence_state: ConfidenceState
@@ -93,6 +119,25 @@ class ProjectionResult:
     degraded_identity_fact: Optional[str]
     zero_rate_fact: Optional[str]
     qualifying_days_progress: Optional[str] = None  # Issue #77: honest qualifying-day progress
+    stage: ProjectionStage = ProjectionStage.NO_OBSERVATIONS
+    evidence_ladder: List[LadderCondition] = field(default_factory=list)
+    write_rate: Optional[float] = None  # sustained-regime rate, bytes per second
+    hours_observed: int = 0
+
+    @property
+    def stage_label(self) -> str:
+        """Display wording; observations that are too few are not "none"."""
+        if self.stage == ProjectionStage.NO_OBSERVATIONS and self.hours_observed > 0:
+            return "Collecting observations"
+        return self.stage.value
+
+    @property
+    def ladder_met(self) -> int:
+        return sum(1 for c in self.evidence_ladder if c.met)
+
+    @property
+    def ladder_total(self) -> int:
+        return len(self.evidence_ladder)
 
 
 # ---------------------------------------------------------------------------
@@ -149,16 +194,40 @@ def _get_all_days(conn):
             for r in cursor.fetchall()]
 
 
+def _get_latest_published_sample(conn, segment_id):
+    """Newest published sample in the segment: (lifetime bytes written, PU).
+
+    W_t is the lifetime counter, not a regime delta.  Pending staging lives
+    in a separate table (ADR 0011), so only published samples are seen here.
+    bytes_written is DUW x 512000 as stored by the collector; fall back to
+    that conversion if only the raw counter is present.
+    """
+    if segment_id is not None:
+        cursor = conn.execute(
+            "SELECT COALESCE(bytes_written, data_units_written * 512000), percentage_used "
+            "FROM samples WHERE segment_id = ? ORDER BY id DESC LIMIT 1",
+            (segment_id,),
+        )
+    else:
+        cursor = conn.execute(
+            "SELECT COALESCE(bytes_written, data_units_written * 512000), percentage_used "
+            "FROM samples ORDER BY id DESC LIMIT 1"
+        )
+    row = cursor.fetchone()
+    return (row[0], row[1]) if row else (None, None)
+
+
 def _get_latest_pu(conn):
     cursor = conn.execute("SELECT percentage_used FROM samples ORDER BY id DESC LIMIT 1")
     row = cursor.fetchone()
     return row[0] if row else None
 
 
-def _get_pu_increments_in_segment(conn, segment_opened_at):
+def _get_pu_increments_in_segment(conn, segment_id):
     cursor = conn.execute(
-        "SELECT COUNT(DISTINCT percentage_used) FROM samples WHERE ts >= ?",
+        "SELECT COUNT(DISTINCT percentage_used) FROM samples "
-        (segment_opened_at,),
+        "WHERE segment_id = ? AND percentage_used IS NOT NULL",
+        (segment_id,),
     )
     row = cursor.fetchone()
     return max(0, (row[0] if row else 0) - 1)
@@ -181,15 +250,50 @@ def _wall_clock_in_range(conn, start, end):
     return total
 
 
+def _get_hours_observed(conn, segment_opened_at, days):
+    """Hours of sampled evidence in the current segment.
+
+    Counted from hour observations.  A day aggregate without any hour rows
+    (imported or pruned history) stands for a whole observed day.
+    """
+    hour_floor = segment_opened_at[:13] if segment_opened_at else ""
+    cursor = conn.execute(
+        "SELECT substr(hour, 1, 10), COUNT(*) FROM hour_observations "
+        "WHERE sample_count > 0 AND hour >= ? GROUP BY 1",
+        (hour_floor,),
+    )
+    by_day = dict(cursor.fetchall())
+    total = 0
+    for d in days:
+        if d["day"] in by_day:
+            total += by_day.pop(d["day"])
+        elif d["sample_count"] > 0:
+            total += DAILY_CYCLE_HOURS
+    return total + sum(by_day.values())
+
+
 # ---------------------------------------------------------------------------
 # Baseline resolution (§6.1, §6.2)
 # ---------------------------------------------------------------------------
 
+def _resolve_implied_baseline(conn, current_segment, facts):
+    """No override exists: Percentage-Used-implied tier, or unavailable (§10)."""
+    if current_segment is not None:
+        _, p = _get_latest_published_sample(conn, current_segment["id"])
+        increments = _get_pu_increments_in_segment(conn, current_segment["id"])
+        if (increments >= IMPLIED_MIN_PU_INCREMENTS and p is not None
+                and IMPLIED_P_MIN <= p <= IMPLIED_P_MAX):
+            return (BaselineTier.IMPLIED, None,
+                    "implied from vendor wear (%d%% used) — coarse" % p, facts)
+    facts.append("vendor wear estimate too coarse to imply endurance")
+    return BaselineTier.NONE, None, "no baseline", facts
+
+
 def _resolve_baseline(conn, current_segment):
     baseline = _get_baseline(conn)
     facts: list[str] = []
     if baseline is None:
-        return BaselineTier.NONE, None, "no baseline", facts
+        return _resolve_implied_baseline(conn, current_segment, facts)
 
     mandatory = [baseline["source_url"], baseline["document_revision"],
                  baseline["entry_date"], baseline["model_string"],
@@ -340,84 +444,88 @@ def _detect_habit_change(days):
 # Confidence rule table (§6.7)
 # ---------------------------------------------------------------------------
 
-def _evaluate_confidence(tier, rate, regime_days, days, current_segment,
+DEGRADED_IDENTITY_FACT = "controller identity unavailable — replacement detection relies on write-counter continuity only"
-                         clock_now, warming_days, warming_low_coverage,
-                         habit_change, staleness_hours, scenario_range):
-    facts = []
 
-    if tier == BaselineTier.NONE:
-        facts.append("no applicable endurance baseline")
-        return ConfidenceState.UNSUPPORTED, facts
 
-    if rate is None or rate <= 0:
+def _build_evidence_ladder(tier, regime_days, days, current_segment,
-        facts.append("no finite projection from this history")
+                           staleness_hours, scenario_range):
-        return ConfidenceState.UNSUPPORTED, facts
+    """The eight Supported conditions of ADR 0002 §8, each met or unmet."""
+    ladder = []
 
-    supported_facts = []
+    def add(name, met, met_reason, unmet_reason):
-    failing = False
+        ladder.append(LadderCondition(name, met, met_reason if met else unmet_reason))
 
-    # 1. Verified baseline
+    add("verified baseline", tier == BaselineTier.VERIFIED,
-    if tier != BaselineTier.VERIFIED:
+        "verified manufacturer TBW",
-        failing = True
+        {BaselineTier.UNVERIFIED: "baseline is unverified (user-supplied)",
-    else:
+         BaselineTier.IMPLIED: "baseline is implied from vendor wear — coarse"}.get(
-        supported_facts.append("verified manufacturer TBW")
+            tier, "no applicable endurance baseline"))
 
-    # 2. >= 14 qualifying days
+    qualifying = sum(1 for d in days
-    qualifying = sum(1 for d in days if d["coverage"] >= WARMING_COVERAGE_FLOOR and d["sample_count"] > 0)
+                     if d["coverage"] >= WARMING_COVERAGE_FLOOR and d["sample_count"] > 0)
-    if qualifying < WARMING_MIN_DAYS:
+    add("14 qualifying days", qualifying >= WARMING_MIN_DAYS,
-        failing = True
+        "%d calendar days" % qualifying,
-    else:
+        "%d of %d qualifying days" % (qualifying, WARMING_MIN_DAYS))
-        supported_facts.append("%d calendar days" % qualifying)
 
-    # 3. Coverage >= 80%
     total_wc = len(days) * 86400
     total_known = sum(int(d["coverage"] * 86400) for d in days)
     avg_cov = total_known / total_wc if total_wc > 0 else 0.0
-    if avg_cov < SUPPORTED_COVERAGE_FLOOR:
+    add("coverage at least 80%", avg_cov >= SUPPORTED_COVERAGE_FLOOR,
-        failing = True
+        "%d%% interval coverage" % int(avg_cov * 100),
+        "interval coverage %d%% (≥%d%% required)"
+        % (int(avg_cov * 100), int(SUPPORTED_COVERAGE_FLOOR * 100)))
+
+    if staleness_hours is None:
+        add("fresh data", False, "", "no observation days yet")
     else:
-        supported_facts.append("%d%% interval coverage" % int(avg_cov * 100))
+        add("fresh data", staleness_hours <= STALENESS_HOURS, "recent data",
+            "newest data %dh old (≥%dh)" % (staleness_hours, STALENESS_HOURS))
 
-    # 4. Fresh (< 48h)
+    if scenario_range is None or not scenario_range.rates:
-    if staleness_hours is not None and staleness_hours > STALENESS_HOURS:
+        add("horizons agree", False, "", "no scenario horizon covered yet")
-        failing = True
+    else:
-    elif staleness_hours is not None:
-        supported_facts.append("recent data")
-
-    # 5. Horizon agreement
-    if scenario_range is not None and len(scenario_range.rates) >= 2:
         rl = list(scenario_range.rates.values())
-        if min(rl) > 0 and max(rl) / min(rl) > HORIZON_AGREEMENT_FACTOR:
+        spread = max(rl) / min(rl) if min(rl) > 0 else None
-            failing = True
+        agree = spread is None or spread <= HORIZON_AGREEMENT_FACTOR
-        else:
+        add("horizons agree", agree, "%d weekly cycles" % len(rl),
-            supported_facts.append("%d weekly cycles" % len(scenario_range.rates))
+            "horizon rates differ by %.1f× (≤%d× required)"
-    else:
+            % (spread or 0.0, HORIZON_AGREEMENT_FACTOR))
-        failing = True
 
-    # 6. Burst guard
+    recent = days[-BURST_GUARD_LOOKBACK:]
-    if not failing and len(days) >= BURST_GUARD_LOOKBACK:
+    t28 = sum(d["bytes_written"] for d in recent)
-        t28 = sum(d["bytes_written"] for d in days[-BURST_GUARD_LOOKBACK:])
+    burst = t28 > 0 and any(d["bytes_written"] >= BURST_GUARD_FRACTION * t28 for d in recent)
-        for d in days[-BURST_GUARD_LOOKBACK:]:
+    add("no burst day", bool(recent) and not burst, "no burst days",
-            if t28 > 0 and d["bytes_written"] >= BURST_GUARD_FRACTION * t28:
+        "one day carries ≥%d%% of trailing writes" % int(BURST_GUARD_FRACTION * 100)
-                failing = True
+        if burst else "no observation days yet")
-                break
-    if not failing:
-        supported_facts.append("no burst days")
 
-    # 7. Regime >= 7 days
+    add("regime at least 7 days", regime_days >= YOUNG_REGIME_DAYS,
-    if regime_days < YOUNG_REGIME_DAYS:
+        "regime %d days" % regime_days,
-        failing = True
+        "regime only %d days old (≥%d required)" % (regime_days, YOUNG_REGIME_DAYS))
 
-    # 8. Degraded identity
+    degraded = bool(current_segment and current_segment.get("identity_degraded"))
-    if current_segment and current_segment.get("identity_degraded"):
+    add("controller identity", not degraded, "controller identity available",
-        failing = True
+        DEGRADED_IDENTITY_FACT)
-        facts.append("controller identity unavailable — replacement detection relies on write-counter continuity only")
+    return ladder
 
-    if not failing:
-        return ConfidenceState.SUPPORTED, supported_facts
 
-    # Limited
+def _evaluate_confidence(tier, rate, regime_days, days, current_segment,
-    limited_facts = list(supported_facts)
+                         habit_change, staleness_hours, scenario_range):
+    """Return (confidence state, facts, evidence ladder)."""
+    ladder = _build_evidence_ladder(tier, regime_days, days, current_segment,
+                                    staleness_hours, scenario_range)
+
+    if tier == BaselineTier.NONE:
+        return ConfidenceState.UNSUPPORTED, ["no applicable endurance baseline"], ladder
+
+    if rate is None or rate <= 0:
+        return ConfidenceState.UNSUPPORTED, ["no finite projection from this history"], ladder
+
+    met_facts = [c.reason for c in ladder if c.met]
+    if all(c.met for c in ladder):
+        return ConfidenceState.SUPPORTED, met_facts, ladder
+
+    # Limited: met facts plus the contributing failures
+    limited_facts = list(met_facts)
     if staleness_hours is not None and staleness_hours > STALENESS_HOURS:
         limited_facts.append("newest data %dh old (≥48h)" % staleness_hours)
     if habit_change is not None:
@@ -425,11 +533,27 @@ def _evaluate_confidence(tier, rate, regime_days, days, current_segment,
     if regime_days < YOUNG_REGIME_DAYS:
         limited_facts.append("regime only %d days old (≥7 required)" % regime_days)
     if current_segment and current_segment.get("identity_degraded"):
-        degraded_fact = "controller identity unavailable — replacement detection relies on write-counter continuity only"
+        if DEGRADED_IDENTITY_FACT not in limited_facts:
-        if degraded_fact not in limited_facts:
+            limited_facts.append(DEGRADED_IDENTITY_FACT)
-            limited_facts.append(degraded_fact)
+    return ConfidenceState.LIMITED, limited_facts, ladder
 
-    return ConfidenceState.LIMITED, limited_facts
+
+def ladder_count_text(result):
+    """Headline form of the evidence ladder: how many conditions are met."""
+    return "%d of %d conditions met" % (result.ladder_met, result.ladder_total)
+
+
+def ladder_lines(result):
+    """Full evidence ladder for the outlook, one line per condition."""
+    return ["[%s] %s — %s" % ("x" if c.met else " ", c.name, c.reason)
+            for c in result.evidence_ladder]
+
+
+def write_rate_gb_day(result):
+    """The sustained-regime write rate in GB/day, or None when not yet known."""
+    if result.write_rate is None:
+        return None
+    return result.write_rate * 86400 / 1e9
 
 
 # ---------------------------------------------------------------------------
@@ -494,24 +618,37 @@ def _has_complete_local_day(conn):
     within a monitoring period that has usable observation evidence.
     This is the prerequisite for showing an endurance outlook.
     """
-    return _count_complete_local_days(conn) > 0
+    local_days = conn.execute(
-
+        "SELECT utc_start, utc_end FROM local_days "
-
-def _count_complete_local_days(conn):
-    """Count the number of complete local observation days."""
-    row = conn.execute(
-        "SELECT COUNT(*) FROM local_days "
         "WHERE complete = 1 "
         "AND activity_precision IN ('measured', 'coarse') "
-        "AND activity_intervals > 0"
+        "AND activity_intervals > 0 ORDER BY id"
-    ).fetchone()
+    ).fetchall()
-    return row[0] if row else 0
+    return any(
+        interval_within_one_monitoring_period(conn, utc_start, utc_end)
+        for utc_start, utc_end in local_days
+    )
 
 
 # ---------------------------------------------------------------------------
 # Main projection function
 # ---------------------------------------------------------------------------
 
+def _determine_stage(state, hours_observed, total_days, days_below_coverage):
+    """Where the projection stands on its way to support (ADR 0012 §1, §2)."""
+    if hours_observed < PROVISIONAL_MIN_HOURS:
+        return ProjectionStage.NO_OBSERVATIONS
+    if state == ConfidenceState.UNSUPPORTED:
+        return ProjectionStage.UNAVAILABLE
+    if hours_observed < DAILY_CYCLE_HOURS:
+        return ProjectionStage.PROVISIONAL
+    if total_days < WARMING_MIN_DAYS or days_below_coverage > WARMING_MAX_LOW_COVERAGE:
+        return ProjectionStage.WARMING
+    if state == ConfidenceState.SUPPORTED:
+        return ProjectionStage.SUPPORTED
+    return ProjectionStage.LIMITED
+
+
 def compute_projection(conn, clock_now):
     facts = []
     habit_change_fact = None
@@ -524,32 +661,14 @@ def compute_projection(conn, clock_now):
     tier, baseline, baseline_label, baseline_facts = _resolve_baseline(conn, current_segment)
     facts.extend(baseline_facts)
 
-    # --- Complete observation day gate (issue #94) ---
+    # The complete-local-day condition is a fact, not a gate (ADR 0012 §2).
-    # An endurance outlook requires at least one complete local
+    if not _has_complete_local_day(conn):
-    # midnight-to-midnight calendar day with usable observation evidence.
-    has_complete_day = _has_complete_local_day(conn)
-    if not has_complete_day:
         facts.append("waiting for a full local observation day")
-        return ProjectionResult(
-            confidence_state=ConfidenceState.UNSUPPORTED,
-            contributing_facts=facts,
-            headline_remaining_seconds=None,
-            scenario_range=None,
-            pu_context_line="Percentage Used: unknown" if _get_latest_pu(conn) is None else "Percentage Used: %d%%" % (_get_latest_pu(conn) or 0),
-            disclosure_text=list(DISCLOSURES),
-            baseline_tier=tier,
-            baseline_label=baseline_label,
-            regime_days=None,
-            habit_change_fact=None,
-            warming_fact=None,
-            staleness_fact=None,
-            degraded_identity_fact=None,
-            zero_rate_fact=None,
-            qualifying_days_progress=None,
-        )
 
     segment_days = _get_days_in_segment(conn, current_segment["opened_at"]) if current_segment else _get_all_days(conn)
     all_days = _get_all_days(conn)
+    hours_observed = _get_hours_observed(
+        conn, current_segment["opened_at"] if current_segment else None, segment_days)
 
     regime_start_day = None
     habit_change = None
@@ -579,12 +698,15 @@ def compute_projection(conn, clock_now):
     scenario = None
     horizon_rates = {}
     horizon_reasons = {}
-    for h in HORIZON_DAYS:
+    for h in SHORT_HORIZON_DAYS + HORIZON_DAYS:
         hr, reason = _compute_horizon_rate(all_days, conn, h, clock_now)
         if hr is not None:
             horizon_rates[h] = hr
-        else:
+        elif h in HORIZON_DAYS:
             horizon_reasons[h] = reason
+    if HORIZON_DAYS[0] in horizon_rates:
+        for h in SHORT_HORIZON_DAYS:
+            horizon_rates.pop(h, None)
     if horizon_rates:
         scenario = ScenarioRange(
             rates=horizon_rates,
@@ -620,33 +742,47 @@ def compute_projection(conn, clock_now):
             facts.append(staleness_fact)
 
     if current_segment and current_segment.get("identity_degraded"):
-        degraded_identity_fact = "controller identity unavailable — replacement detection relies on write-counter continuity only"
+        degraded_identity_fact = DEGRADED_IDENTITY_FACT
         facts.append(degraded_identity_fact)
 
-    state, conf_facts = _evaluate_confidence(
+    state, conf_facts, ladder = _evaluate_confidence(
-        tier, rate, regime_days_count, segment_days, current_segment, clock_now,
+        tier, rate, regime_days_count, segment_days, current_segment,
-        qualifying, 0, habit_change, staleness_hours, scenario,
+        habit_change, staleness_hours, scenario,
     )
 
+    stage = _determine_stage(state, hours_observed, total_days_count, days_below_coverage)
+    if stage == ProjectionStage.NO_OBSERVATIONS:
+        # Too little evidence for any number: no rate, no lifespan.
+        state = ConfidenceState.UNSUPPORTED
+        rate = None
+        scenario = None
+        if hours_observed > 0:
+            facts.insert(0, "%d of %d hours observed before the first projection"
+                         % (hours_observed, PROVISIONAL_MIN_HOURS))
+    elif stage == ProjectionStage.PROVISIONAL:
+        # Short-horizon spread: the rate over the hours observed so far.
+        scenario = ScenarioRange(rates={SHORT_HORIZON_DAYS[0]: rate},
+                                 min_days=SHORT_HORIZON_DAYS[0],
+                                 max_days=SHORT_HORIZON_DAYS[0])
+        facts[:0] = ["%d hours observed" % hours_observed, "daily cycle not yet seen"]
+
     all_facts = list(facts)
     for cf in conf_facts:
         if cf not in all_facts:
             all_facts.append(cf)
 
     headline_seconds = None
-    if state != ConfidenceState.UNSUPPORTED and rate is not None and rate > 0 and baseline is not None:
+    if state != ConfidenceState.UNSUPPORTED and rate is not None and rate > 0:
-        if tier in (BaselineTier.VERIFIED, BaselineTier.UNVERIFIED):
+        W_t, p = _get_latest_published_sample(
+            conn, current_segment["id"] if current_segment else None)
+        E_baseline = None
+        if tier in (BaselineTier.VERIFIED, BaselineTier.UNVERIFIED) and baseline is not None:
             E_baseline = baseline["tbw_terabytes"] * TBW_TO_BYTES
-        elif tier == BaselineTier.IMPLIED:
+        elif (tier == BaselineTier.IMPLIED and W_t is not None and p is not None
-            p = _get_latest_pu(conn)
+                and IMPLIED_P_MIN <= p <= IMPLIED_P_MAX):
-            if p is not None and IMPLIED_P_MIN <= p <= IMPLIED_P_MAX:
+            E_baseline = 100 * W_t / p
-                E_baseline = 100 * regime_bytes / p
+        if E_baseline is not None and W_t is not None:
-            else:
+            headline_seconds = max(E_baseline - W_t, 0) / rate
-                E_baseline = None
-        else:
-            E_baseline = None
-        if E_baseline is not None:
-            headline_seconds = max(E_baseline - regime_bytes, 0) / rate
 
     pu_line = _build_pu_context_line(conn, rate, segment_days, clock_now)
 
@@ -666,4 +802,8 @@ def compute_projection(conn, clock_now):
         degraded_identity_fact=degraded_identity_fact,
         zero_rate_fact=zero_rate_fact,
         qualifying_days_progress=qualifying_days_progress,
+        stage=stage,
+        evidence_ladder=ladder,
+        write_rate=rate,
+        hours_observed=hours_observed,
     )

src/fenris/pruning.py

@@ -4,25 +4,23 @@ The 14-day cutoff never overrides local-day preservation, shared boundary
 evidence, publication recovery, or the newest sample's successor-anchor role.
 """
 import sqlite3
-from datetime import date, datetime, timedelta, timezone
+from datetime import date, datetime, timedelta
+
+from .monitoring_periods import (
+    as_utc_datetime,
+    interval_within_one_monitoring_period,
+)
 
 RAW_SAMPLE_RETENTION_DAYS = 14
 
 
-def _utc_datetime(value: datetime) -> datetime:
-    """Normalize a clock value to aware UTC."""
-    if value.tzinfo is None:
-        value = value.replace(tzinfo=timezone.utc)
-    return value.astimezone(timezone.utc)
-
-
 def _parse_sample_time(value: str) -> datetime | None:
     """Parse old timestamps conservatively; malformed legacy values stay."""
     try:
         parsed = datetime.fromisoformat(value)
     except (TypeError, ValueError):
         return None
-    return _utc_datetime(parsed)
+    return as_utc_datetime(parsed)
 
 
 def _sample_rows(conn: sqlite3.Connection) -> list[tuple]:
@@ -149,16 +147,7 @@ def _monitoring_period_covers(
     end: datetime,
 ) -> bool:
     """Require continuous monitoring before a local-day total replaces detail."""
-    for started_at, ended_at in conn.execute(
+    return interval_within_one_monitoring_period(conn, start, end)
-        "SELECT started_at, ended_at FROM monitoring_periods"
-    ):
-        period_start = _parse_sample_time(started_at)
-        period_end = _parse_sample_time(ended_at) if ended_at is not None else None
-        if period_start is None or period_start > start:
-            continue
-        if ended_at is None or (period_end is not None and end <= period_end):
-            return True
-    return False
 
 
 def _has_local_replacement(
@@ -312,7 +301,7 @@ def needs_boundary_anchor(
 ) -> bool:
     """Return whether an old sample still carries unreplaced evidence."""
     sample_time = _parse_sample_time(sample_ts)
-    cutoff = _utc_datetime(now) - timedelta(days=RAW_SAMPLE_RETENTION_DAYS)
+    cutoff = as_utc_datetime(now) - timedelta(days=RAW_SAMPLE_RETENTION_DAYS)
     if sample_time is None:
         return True
     if sample_time >= cutoff:
@@ -341,13 +330,13 @@ def prune_old_samples(
     neighbour interval, lacks UTC or local-day replacement evidence, or has a
     timestamp that cannot be safely interpreted.
     """
-    cutoff = _utc_datetime(now) - timedelta(days=retention_days)
+    cutoff = as_utc_datetime(now) - timedelta(days=retention_days)
     owns_transaction = not conn.in_transaction
     savepoint = "fenris_sample_retention"
     if owns_transaction:
         conn.execute("BEGIN IMMEDIATE")
     else:
-        conn.execute(f"SAVEPOINT {savepoint}")
+        conn.execute(f"SAVEPOINT {savepoint}")  # nosemgrep: sqlalchemy-execute-raw-query, formatted-sql-query -- savepoint name is a function-local constant; SQLite cannot bind identifiers
 
     try:
         rows = _sample_rows(conn)
@@ -355,7 +344,7 @@ def prune_old_samples(
             if owns_transaction:
                 conn.commit()
             else:
-                conn.execute(f"RELEASE SAVEPOINT {savepoint}")
+                conn.execute(f"RELEASE SAVEPOINT {savepoint}")  # nosemgrep: sqlalchemy-execute-raw-query, formatted-sql-query -- savepoint name is a function-local constant; SQLite cannot bind identifiers
             return 0
 
         newest_id = rows[-1][0]
@@ -372,12 +361,12 @@ def prune_old_samples(
         if owns_transaction:
             conn.commit()
         else:
-            conn.execute(f"RELEASE SAVEPOINT {savepoint}")
+            conn.execute(f"RELEASE SAVEPOINT {savepoint}")  # nosemgrep: sqlalchemy-execute-raw-query, formatted-sql-query -- savepoint name is a function-local constant; SQLite cannot bind identifiers
         return len(expired)
     except Exception:
         if owns_transaction:
             conn.rollback()
         else:
-            conn.execute(f"ROLLBACK TO SAVEPOINT {savepoint}")
+            conn.execute(f"ROLLBACK TO SAVEPOINT {savepoint}")  # nosemgrep: sqlalchemy-execute-raw-query, formatted-sql-query -- savepoint name is a function-local constant; SQLite cannot bind identifiers
-            conn.execute(f"RELEASE SAVEPOINT {savepoint}")
+            conn.execute(f"RELEASE SAVEPOINT {savepoint}")  # nosemgrep: sqlalchemy-execute-raw-query, formatted-sql-query -- savepoint name is a function-local constant; SQLite cannot bind identifiers
         raise

src/fenris/repair.py

@@ -13,11 +13,11 @@ Contracts:
 """
 import logging
 import sqlite3
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 from datetime import datetime, timedelta, timezone
 from typing import Optional, List, Tuple
 
-from .derive import find_previous_sample, derive_hours_from_interval, _parse_ts
+from .derive import derive_hours_from_interval, _parse_ts
 
 logger = logging.getLogger(__name__)
 

src/fenris/segment.py

@@ -17,7 +17,6 @@ import sqlite3
 from datetime import datetime
 from typing import Any, Dict, Optional, Tuple
 
-from .collector import normalize_identity
 
 
 def find_current_segment(conn: sqlite3.Connection) -> Optional[Dict[str, Any]]:

src/fenris/status.py

@@ -15,15 +15,17 @@ Criteria: LC-9, CI-2, CI-4, FL-4, FL-5, FL-7.
 """
 import sqlite3
 from contextlib import contextmanager
-import sys
+from datetime import datetime, timezone
-from datetime import datetime, timedelta, timezone
 from pathlib import Path
 from typing import Any, Dict, Iterator, List, Optional, Tuple, TYPE_CHECKING
 
 if TYPE_CHECKING:
     from .status_composition import StatusComposition
 
-from .projection import compute_projection, ConfidenceState, DISCLOSURES
+from .projection import (
+    compute_projection, DISCLOSURES, ProjectionStage, ladder_count_text,
+    ladder_lines, write_rate_gb_day,
+)
 from .store import SCHEMA_VERSION
 from .init_system import (
     query_service_state as _init_query_service_state,
@@ -180,19 +182,6 @@ def grade_freshness(newest_sample_ts: Optional[str], clock_now: datetime) -> str
         return "stale"
 
 
-def freshness_age_human(age_s: Optional[int]) -> str:
-    """Human-readable age string for freshness fact."""
-    if age_s is None:
-        return "unknown age"
-    if age_s < 60:
-        return "%ds ago" % age_s
-    if age_s < 3600:
-        return "%dm ago" % (age_s // 60)
-    if age_s < 86400:
-        return "%dh %dm ago" % (age_s // 3600, (age_s % 3600) // 60)
-    return "%dd ago" % (age_s // 86400)
-
-
 # ---------------------------------------------------------------------------
 # Drive anomalies (§9.7 — FL-7)
 # ---------------------------------------------------------------------------
@@ -255,8 +244,7 @@ def check_retired_flag(flag: str) -> Optional[str]:
 # ---------------------------------------------------------------------------
 
 def _format_projection(proj, freshness: str, drive_facts: List[str],
-                       config_error: Optional[str],
+                       config_error: Optional[str]) -> str:
-                       sample_count: int = 0, day_count: int = 0) -> str:
     """Format projection details; monitoring status has its own renderer."""
     lines = []
 
@@ -272,15 +260,6 @@ def _format_projection(proj, freshness: str, drive_facts: List[str],
         lines.append("Enable monitoring: fenris monitor resume")
         return "\n".join(lines)
 
-    # --- Single sample: awaiting another sample (issue #73 AC3) ---
-    # Only show awaiting state when there are no day aggregates (e.g., legacy import
-    # or hand-crafted stores can have 1 sample but sufficient day data for projection)
-    if sample_count <= 1 and day_count == 0:
-        lines.append("awaiting another sample")
-        lines.append("")
-        lines.append("Collecting usage data — the first projection requires at least two samples.")
-        return "\n".join(lines)
-
     if proj is None:
         lines.append("no projection available")
         return "\n".join(lines)
@@ -290,6 +269,9 @@ def _format_projection(proj, freshness: str, drive_facts: List[str],
     lines.append(headline)
     lines.append("")
 
+    # --- Stage and ladder count (ADR 0012) ---
+    lines.append("Projection stage: %s · %s" % (proj.stage_label, ladder_count_text(proj)))
+
     # --- Confidence state + contributing facts (§6.7, §6.11) ---
     state_label = proj.confidence_state.value
     facts_list = list(proj.contributing_facts) if proj.contributing_facts else []
@@ -305,6 +287,11 @@ def _format_projection(proj, freshness: str, drive_facts: List[str],
         lines.append("%s evidence" % state_label)
     lines.append("")
 
+    # --- Full evidence ladder in the outlook (ADR 0012 §5) ---
+    lines.append("Evidence ladder")
+    lines.extend("  " + line for line in ladder_lines(proj))
+    lines.append("")
+
     # --- Scenario range (§6.5) with horizon reasons ---
     if proj.scenario_range:
         parts = []
@@ -333,8 +320,13 @@ def _format_projection(proj, freshness: str, drive_facts: List[str],
 def _format_headline(proj) -> str:
     """Format the lifespan headline or its no-projection wording (§6.11)."""
     if proj.headline_remaining_seconds is None:
+        if proj.stage == ProjectionStage.NO_OBSERVATIONS:
+            return "no projection yet — collecting observations"
         if proj.zero_rate_fact:
             return "no finite projection from this history"
+        rate = write_rate_gb_day(proj)
+        if rate is not None:
+            return "write rate: %.2f GB/day · no lifespan without an endurance baseline" % rate
         if proj.warming_fact:
             return proj.warming_fact
         return "no projection available"
@@ -507,10 +499,7 @@ def get_status(store_path: Optional[Path] = None, clock_now: Optional[datetime]
                     proj = compute_projection(conn, clock_now)
                 except (sqlite3.Error, ValueError, TypeError):
                     pass
-            parts.append(_format_projection(
+            parts.append(_format_projection(proj, comp.freshness, drive_facts, config_error))
-                proj, comp.freshness, drive_facts, config_error,
-                comp.sample_count, comp.day_count,
-            ))
         if query_journal and (
             comp.store_fault or comp.last_collect_ok is False
             or comp.freshness in ("missed", "stale")

src/fenris/status_composition.py

@@ -11,24 +11,19 @@ Freshness grading uses shared constants from status.py.
 import enum
 import sqlite3
 from dataclasses import dataclass, field
-from datetime import datetime, timedelta, timezone
+from datetime import datetime, timezone
 from typing import Any, Dict, List, Optional
 
-# Status poll interval (AC78-6): lightweight 5s systemctl show poll
-STATUS_POLL_INTERVAL_S = 5
-
 from .status import (
-    FRESH_THRESHOLD_S,
-    STALENESS_THRESHOLD_S,
     grade_freshness,
-    freshness_age_human,
     is_deliberately_paused,
     monitoring_continuity,
     deliberate_pause_lines,
-    open_store_readonly,
-    StoreFault,
-    NewerSchema,
 )
+from .timefmt import freshness_age_human
+
+# Status poll interval (AC78-6): lightweight 5s systemctl show poll
+STATUS_POLL_INTERVAL_S = 5
 
 
 # ---------------------------------------------------------------------------

src/fenris/store.py

@@ -7,11 +7,26 @@ This module handles:
 """
 import sqlite3
 from pathlib import Path
-from typing import Optional
 
 
 # Schema version - increment on each migration
-SCHEMA_VERSION = 6
+SCHEMA_VERSION = 7
+
+# Diagnostic counters added in schema 7 (issue #111), named after the
+# NVMe health-log keys they come from. All nullable: legacy rows and drives that
+# do not report a counter stay unknown rather than zero.
+DIAGNOSTIC_SAMPLE_COLUMNS = (
+    "host_reads",
+    "host_writes",
+    "controller_busy_time",
+    "num_err_log_entries",
+    "warning_temp_time",
+    "critical_comp_time",
+    "thm_temp1_trans_count",
+    "thm_temp1_total_time",
+    "thm_temp2_trans_count",
+    "thm_temp2_total_time",
+)
 
 
 # Packaged default placement (spec §8.3). The config may override it, but a
@@ -61,7 +76,7 @@ def init_store(store_path: Path) -> sqlite3.Connection:
     if current_version == 0:
         # New database - create schema
         _create_schema(conn)
-        conn.execute(f"PRAGMA user_version={SCHEMA_VERSION}")
+        conn.execute(f"PRAGMA user_version={SCHEMA_VERSION}")  # nosemgrep: sqlalchemy-execute-raw-query, formatted-sql-query -- SCHEMA_VERSION is an int constant; PRAGMA cannot bind parameters
         conn.commit()
     elif current_version > SCHEMA_VERSION:
         # Unknown newer version - refuse
@@ -109,7 +124,17 @@ def _create_schema(conn: sqlite3.Connection):
             bytes_read INTEGER,
             critical_warning INTEGER,
             segment_id INTEGER,
-            local_tz TEXT
+            local_tz TEXT,
+            host_reads INTEGER,
+            host_writes INTEGER,
+            controller_busy_time INTEGER,
+            num_err_log_entries INTEGER,
+            warning_temp_time INTEGER,
+            critical_comp_time INTEGER,
+            thm_temp1_trans_count INTEGER,
+            thm_temp1_total_time INTEGER,
+            thm_temp2_trans_count INTEGER,
+            thm_temp2_total_time INTEGER
         )
     """)
     
@@ -303,6 +328,7 @@ def _apply_migrations(conn: sqlite3.Connection, current_version: int):
         4: _migrate_3_to_4,
         5: _migrate_4_to_5,
         6: _migrate_5_to_6,
+        7: _migrate_6_to_7,
     }
     while current_version < SCHEMA_VERSION:
         target_version = current_version + 1
@@ -312,7 +338,7 @@ def _apply_migrations(conn: sqlite3.Connection, current_version: int):
         conn.execute("BEGIN IMMEDIATE")
         try:
             migration(conn)
-            conn.execute(f"PRAGMA user_version={target_version}")
+            conn.execute(f"PRAGMA user_version={target_version}")  # nosemgrep: sqlalchemy-execute-raw-query, formatted-sql-query -- target_version is an int key of the static migrations map; PRAGMA cannot bind parameters
             conn.commit()
         except Exception:
             conn.rollback()
@@ -337,7 +363,7 @@ def _migrate_1_to_2(conn: sqlite3.Connection) -> None:
         ).fetchall()}
         for column in ("unattributed_bytes_written", "unattributed_bytes_read"):
             if column not in cols:
-                conn.execute(
+                conn.execute(  # nosemgrep: sqlalchemy-execute-raw-query, formatted-sql-query -- column comes from a hardcoded tuple; DDL cannot bind identifiers
                     f"ALTER TABLE day_aggregates ADD COLUMN {column} INTEGER DEFAULT 0"
                 )
 
@@ -394,7 +420,7 @@ def _migrate_4_to_5(conn: sqlite3.Connection) -> None:
             ("last_sample_id", "INTEGER"),
         ):
             if column not in local_cols:
-                conn.execute(
+                conn.execute(  # nosemgrep: sqlalchemy-execute-raw-query, formatted-sql-query -- column and declaration come from a hardcoded tuple; DDL cannot bind identifiers
                     f"ALTER TABLE local_days ADD COLUMN {column} {declaration}"
                 )
     _create_local_day_shared_evidence(conn)
@@ -408,6 +434,23 @@ def _migrate_5_to_6(conn: sqlite3.Connection) -> None:
     repair_legacy_local_day_evidence(conn)
 
 
+def _migrate_6_to_7(conn: sqlite3.Connection) -> None:
+    """Add nullable diagnostic counters to samples (issue #111).
+
+    Additive only: existing rows are untouched and read NULL (unknown).
+    Rollback (SQLite 3.35+, with the collector stopped): for each column in
+    DIAGNOSTIC_SAMPLE_COLUMNS run ``ALTER TABLE samples DROP COLUMN <name>``,
+    then ``PRAGMA user_version=6``. Dropping loses only the new counters.
+    """
+    cols = {row[1] for row in conn.execute("PRAGMA table_info(samples)").fetchall()}
+    if not cols:
+        return
+    for column in DIAGNOSTIC_SAMPLE_COLUMNS:
+        if column not in cols:
+            # nosemgrep: python.lang.security.audit.formatted-sql-query.formatted-sql-query, python.sqlalchemy.security.sqlalchemy-execute-raw-query.sqlalchemy-execute-raw-query -- column is from DIAGNOSTIC_SAMPLE_COLUMNS, a constant
+            conn.execute(f"ALTER TABLE samples ADD COLUMN {column} INTEGER")
+
+
 def migrate_to_latest(store_path: Path) -> int:
     """Apply forward-only migrations to bring the store to SCHEMA_VERSION.
     
@@ -436,7 +479,7 @@ def migrate_to_latest(store_path: Path) -> int:
     # Version 0 means no schema — create fresh (issue #73)
     if current_version == 0:
         _create_schema(conn)
-        conn.execute(f"PRAGMA user_version={SCHEMA_VERSION}")
+        conn.execute(f"PRAGMA user_version={SCHEMA_VERSION}")  # nosemgrep: sqlalchemy-execute-raw-query, formatted-sql-query -- SCHEMA_VERSION is an int constant; PRAGMA cannot bind parameters
         conn.commit()
         conn.close()
         return SCHEMA_VERSION

src/fenris/themes.py

@@ -161,14 +161,15 @@ def get_theme(name: str) -> Theme:
 def get_graph_colors(theme_name: str) -> Dict[str, str]:
     """Return the graph colour roles for a theme preset.
 
-    Returns a dict with keys: allocated, unallocated, gap, zero, partial,
+    Returns a dict with keys: allocated, unallocated, secondary (the second
-    selection and muted text. Falls back to Chalktone for unknown names.
+    series), gap, zero, partial, selection and muted text. Falls back to Chalktone for unknown names.
     """
     theme = get_theme(theme_name)
     variables = theme.variables or {}
     return {
         "allocated": variables.get("graph-allocated", "#d4a017"),
         "unallocated": variables.get("graph-unallocated", "#8b6914"),
+        "secondary": variables.get("graph-unallocated", "#8b6914"),
         "gap": variables.get("graph-gap", "#554422"),
         "zero": variables.get("graph-zero", "#665533"),
         "partial": variables.get("graph-partial", "#aa8822"),

src/fenris/timefmt.py

@@ -0,0 +1,63 @@
+"""Time formatting for the dashboard and CLI.
+
+One home for every user-facing time string: local clock times labelled with
+their timezone, the secondary UTC form shown beside them, and relative ages.
+Stored evidence stays UTC; only presentation is localised.
+"""
+from datetime import datetime, timezone
+from typing import Optional
+from zoneinfo import ZoneInfo, ZoneInfoNotFoundError
+
+from .tz_util import detect_system_tz, get_tz_offset_str
+
+
+def local_zone_name() -> str:
+    """Return the system timezone name, falling back to UTC when unusable."""
+    name = detect_system_tz()
+    try:
+        ZoneInfo(name)
+    except (ZoneInfoNotFoundError, ValueError, OSError):
+        return "UTC"
+    return name
+
+
+def tz_label(when: datetime, zone_name: str) -> str:
+    """Timezone name with its UTC offset at *when*, e.g. ``Asia/Kolkata +05:30``."""
+    return "%s %s" % (zone_name, get_tz_offset_str(when, zone_name))
+
+
+def local_clock(when: datetime, zone_name: str) -> str:
+    """Local wall-clock ``HH:MM`` for *when*."""
+    return when.astimezone(ZoneInfo(zone_name)).strftime("%H:%M")
+
+
+def local_timestamp(when: datetime, zone_name: str) -> str:
+    """Local date, clock time and timezone label for CLI output."""
+    local = when.astimezone(ZoneInfo(zone_name))
+    return "%s %s" % (local.strftime("%Y-%m-%d %H:%M"), tz_label(when, zone_name))
+
+
+def utc_stamp_label(when: datetime) -> str:
+    """Secondary UTC form of a single instant."""
+    return when.astimezone(timezone.utc).strftime("%Y-%m-%d %H:%M UTC")
+
+
+def utc_range_label(start: datetime, end: datetime) -> str:
+    """Secondary UTC form of an interval."""
+    return "%s → %s UTC" % (
+        start.astimezone(timezone.utc).strftime("%H:%M"),
+        end.astimezone(timezone.utc).strftime("%H:%M"),
+    )
+
+
+def freshness_age_human(age_s: Optional[int]) -> str:
+    """Human-readable age string for freshness fact."""
+    if age_s is None:
+        return "unknown age"
+    if age_s < 60:
+        return "%ds ago" % age_s
+    if age_s < 3600:
+        return "%dm ago" % (age_s // 60)
+    if age_s < 86400:
+        return "%dh %dm ago" % (age_s // 3600, (age_s % 3600) // 60)
+    return "%dd ago" % (age_s // 86400)

src/fenris/tz_util.py

@@ -5,7 +5,7 @@ computation used by local-day derivation. All functions are
 stateless and safe to call from the collector and TUI reader.
 """
 import os
-from datetime import datetime, timezone
+from datetime import datetime
 from pathlib import Path
 
 

tests/conftest.py

@@ -1,7 +1,6 @@
 """Shared test helpers for Fenris test suite."""
 from pathlib import Path
 
-import pytest
 
 REPO_ROOT = Path(__file__).resolve().parent.parent
 VERSION_FILE = REPO_ROOT / "pyproject.toml"

tests/test_acceptance_sweep.py

@@ -9,7 +9,6 @@ CI-3  Prohibition set: automated structural checks
 CI-4  Required wording and six disclosures in both views
 """
 import re
-import sqlite3
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
 from unittest.mock import patch
@@ -19,16 +18,13 @@ import sys
 
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
-from fenris.store import init_store, SCHEMA_VERSION
+from fenris.store import init_store
 from fenris.monitoring_periods import ensure_period_open
 from fenris.projection import (
     compute_projection,
     ConfidenceState,
     BaselineTier,
     DISCLOSURES,
-    STALENESS_HOURS,
-    WARMING_MIN_DAYS,
-    YOUNG_REGIME_DAYS,
 )
 from fenris.status import (
     grade_freshness,
@@ -36,13 +32,9 @@ from fenris.status import (
     render_status,
     format_disclosures,
     FRESH_THRESHOLD_S,
-    STALENESS_THRESHOLD_S,
-    CADENCE_DEFAULT_S,
-    ACCURACY_SEC,
 )
 from fenris.tui import (
     FenrisTuiApp,
-    _format_remaining,
 )
 
 
@@ -98,8 +90,8 @@ def _insert_day(conn, day, bw=1024*1024*100, coverage=0.95, samples=24):
 def _insert_sample(conn, ts, pu=5):
     conn.execute(
         "INSERT INTO samples (ts, device, data_units_written, data_units_read, "
-        "percentage_used, bytes_written, bytes_read, power_on_hours) "
+        "percentage_used, bytes_written, bytes_read, power_on_hours, segment_id) "
-        "VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+        "VALUES (?, ?, ?, ?, ?, ?, ?, ?, 1)",
         (ts, "/dev/nvme0n1", 1000000, 500000, pu, 512000000000, 256000000000, 8765),
     )
     conn.commit()

tests/test_activity_plot.py

@@ -50,3 +50,25 @@ def test_many_intervals_and_selection_fit_small_plot_without_losing_points():
     assert len(columns) == len(points)
     assert text.plain.splitlines()[-2][columns[100]] == "▼"
     assert all(len(row) == 32 for row in text.plain.splitlines())
+
+
+def test_secondary_series_shares_the_axis_and_colours_its_own_dots():
+    colors = get_graph_colors("chalktone")
+    writes = [VolumePoint(t, v, str(t)) for t, v in ((0, 10), (1, 10), (2, 10))]
+    reads = [VolumePoint(t, v, str(t)) for t, v in ((0, 100), (1, 100), (2, 100))]
+    text, columns, unit = volume_plot(
+        writes, 48, 10, -1, colors, secondary=reads)
+    assert "100.00" in text.plain  # the larger read volume sets the ceiling
+    styles = {span.style for span in text.spans}
+    assert colors["allocated"] in styles and colors["secondary"] in styles
+
+
+def test_secondary_gap_does_not_draw_or_connect():
+    colors = get_graph_colors("chalktone")
+    points = [VolumePoint(t, 5, str(t)) for t in range(3)]
+    reads = [VolumePoint(0, 9, "0"), VolumePoint(1, None, "1", "gap"),
+             VolumePoint(2, 9, "2")]
+    text, columns, _ = volume_plot(points, 48, 10, -1, colors, secondary=reads)
+    rows = text.plain.splitlines()[:-2]
+    top = next(r for r in rows if any(0x2801 <= ord(c) <= 0x28ff for c in r))
+    assert all(c == " " for c in top[columns[0] + 1:columns[-1]])

tests/test_activity_readout.py

@@ -0,0 +1,483 @@
+"""Tests for the Activity readout module (issue #108).
+
+The readout is exercised against SQLite fixtures only; no Textual is involved.
+The local timezone is pinned through the TZ environment variable.
+"""
+from datetime import datetime, timezone
+from pathlib import Path
+import sys
+
+import pytest
+
+sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
+
+from fenris.activity_readout import (
+    critical_warning_badge,
+    decode_critical_warning,
+    diagnostics_text,
+    day_readout_text,
+    hour_readout_text,
+    local_day_text,
+    interval_readout_text,
+    readout,
+    selected_local_day,
+)
+from fenris.activity_selection import (
+    HISTORY_RANGE_MAX,
+    ActivitySelection,
+    HistoryDayIdentity,
+)
+from fenris.store import init_store
+from fenris.timefmt import (
+    freshness_age_human,
+    local_timestamp,
+    utc_range_label,
+    utc_stamp_label,
+)
+
+NOW = datetime(2026, 9, 30, 20, 0, tzinfo=timezone.utc)  # 01:30 on 10-01 in Kolkata
+
+
+@pytest.fixture
+def kolkata(monkeypatch):
+    monkeypatch.setenv("TZ", "Asia/Kolkata")
+
+
+@pytest.fixture
+def conn(tmp_path):
+    connection = init_store(tmp_path / "observations.db")
+    yield connection
+    connection.close()
+
+
+def _local_day(conn, local_date, utc_start, utc_end, tz="Asia/Kolkata",
+               offset="+05:30", written=1_000_000_000, read=500_000_000,
+               intervals=1, seconds=86400, incomplete=0, precision="measured"):
+    conn.execute(
+        "INSERT INTO local_days (local_date, tz_name, tz_offset, utc_start, "
+        "utc_end, bytes_written, bytes_read, coverage, sample_count, complete, "
+        "activity_seconds, activity_intervals, activity_incomplete, "
+        "activity_precision) VALUES (?,?,?,?,?,?,?,1.0,24,1,?,?,?,?)",
+        (local_date, tz, offset, utc_start, utc_end, written, read,
+         seconds, intervals, incomplete, precision),
+    )
+    conn.commit()
+
+
+def _kolkata_day(conn, local_date, **kwargs):
+    day = datetime.fromisoformat(local_date)
+    start = datetime(day.year, day.month, day.day, tzinfo=timezone.utc)
+    start_utc = start.timestamp() - 19800
+    end_utc = start_utc + 86400
+    _local_day(
+        conn, local_date,
+        datetime.fromtimestamp(start_utc, timezone.utc).isoformat(),
+        datetime.fromtimestamp(end_utc, timezone.utc).isoformat(),
+        **kwargs,
+    )
+
+
+def _hour(conn, hour, written=0, read=0, active=0, idle=0, off=0, unknown=0,
+          samples=1, coverage=1.0, tmin=None, tmax=None, tavg=None):
+    conn.execute(
+        "INSERT INTO hour_observations (hour, active_seconds, idle_seconds, "
+        "powered_off_seconds, unknown_seconds, bytes_written_delta, "
+        "bytes_read_delta, temperature_min, temperature_max, temperature_avg, "
+        "sample_count, coverage) VALUES (?,?,?,?,?,?,?,?,?,?,?,?)",
+        (hour, active, idle, off, unknown, written, read, tmin, tmax, tavg,
+         samples, coverage),
+    )
+    conn.commit()
+
+
+def _sample(conn, ts, written, read, segment=1, temp=35, critical=0):
+    conn.execute(
+        "INSERT INTO samples (ts, device, data_units_written, data_units_read, "
+        "percentage_used, bytes_written, bytes_read, power_on_hours, "
+        "segment_id, temperature_c, critical_warning) "
+        "VALUES (?,?,?,?,?,?,?,?,?,?,?)",
+        (ts, "/dev/nvme0n1", 1, 1, 1, written, read, 100, segment, temp,
+         critical),
+    )
+    conn.commit()
+
+
+class TestHistoryDays:
+    def test_daily_bars_use_local_dates_not_utc_aggregates(self, conn, kolkata):
+        # A UTC aggregate for 09-30 must never be relabelled as a local day.
+        conn.execute(
+            "INSERT INTO day_aggregates (day, bytes_written_delta, "
+            "sample_count, coverage) VALUES ('2026-09-30', 9000000000, 24, 1.0)"
+        )
+        conn.commit()
+        _kolkata_day(conn, "2026-10-01")
+        result = readout(conn, ActivitySelection(), NOW)
+        assert result.days[-1]["day"] == "2026-10-01"
+        assert result.days[-1]["timezone_label"] == "Asia/Kolkata +05:30"
+        by_day = {d["day"]: d for d in result.days}
+        assert by_day["2026-09-30"]["is_gap"]
+        assert by_day["2026-09-30"]["total_written"] is None
+
+    def test_window_is_exact_and_missing_days_stay_explicit_gaps(self, conn, kolkata):
+        _kolkata_day(conn, "2026-09-29")
+        result = readout(conn, ActivitySelection(), NOW)
+        assert len(result.days) == HISTORY_RANGE_MAX
+        gaps = [d for d in result.days if d["is_gap"]]
+        assert len(gaps) == HISTORY_RANGE_MAX - 1  # only 09-29 has evidence
+        known = next(d for d in result.days if d["day"] == "2026-09-29")
+        assert known["activity_state"] == "complete"
+        assert known["total_written"] == 1_000_000_000
+
+    def test_current_local_day_is_partial_and_incomplete_day_is_flagged(self, conn, kolkata):
+        _kolkata_day(conn, "2026-10-01", written=100)
+        _kolkata_day(conn, "2026-09-30", written=200, seconds=3600)
+        by_day = {d["day"]: d for d in readout(conn, ActivitySelection(), NOW).days}
+        assert by_day["2026-10-01"]["activity_state"] == "so_far"
+        assert by_day["2026-10-01"]["is_partial"]
+        assert by_day["2026-09-30"]["activity_state"] == "incomplete"
+        assert by_day["2026-09-30"]["is_partial"]
+
+    def test_shared_local_day_evidence_is_kept_apart_not_prorated(self, conn, kolkata):
+        _kolkata_day(conn, "2026-09-29", written=7_000_000_000, read=3_000_000_000)
+        conn.execute(
+            "INSERT INTO local_day_unallocated_evidence (start_sample_id, "
+            "end_sample_id, start_local_date, end_local_date, start_tz_name, "
+            "end_tz_name, started_at, ended_at, bytes_written, bytes_read, "
+            "reason) VALUES (1,2,'2026-09-29','2026-09-30','Asia/Kolkata',"
+            "'Asia/Kolkata','2026-09-29T18:00:00+00:00',"
+            "'2026-09-29T18:40:00+00:00',1000000000,500000000,'local_midnight')"
+        )
+        conn.commit()
+        day = next(
+            d for d in readout(conn, ActivitySelection(), NOW).days
+            if d["day"] == "2026-09-29"
+        )
+        assert day["total_written"] == 7_000_000_000
+        assert day["shared_bytes_written"] == 1_000_000_000
+        assert day["shared_bytes_read"] == 500_000_000
+        text = day_readout_text(day)
+        assert "W 7.000 GB known" in text
+        assert "shared at midnight W 1.000 GB · R 0.500 GB" in text
+
+    def test_unrecorded_selected_date_is_an_unavailable_gap(self, conn, kolkata):
+        selection = ActivitySelection()
+        selection.select_history_date("2026-06-01")
+        result = readout(conn, selection, NOW)
+        assert result.local_date == "2026-06-01"
+        assert result.local_day is None
+        picked = [d for d in result.days if d["day"] == "2026-06-01"]
+        assert picked and picked[0]["is_gap"]
+        assert "local-day evidence unavailable" in day_readout_text(picked[0])
+
+
+class TestLocalDayStrip:
+    def test_current_day_text_has_zone_state_and_habit(self, conn, kolkata):
+        _kolkata_day(conn, "2026-10-01", written=2_000_000_000, read=1_000_000_000)
+        _hour(conn, "2026-09-30T19:00:00+00:00", active=3600, tmin=30, tmax=44)
+        local_date, local = selected_local_day(conn, ActivitySelection(), NOW)
+        text = local_day_text(local_date, local)
+        assert "2026-10-01" in text and "Asia/Kolkata +05:30" in text
+        assert "totals so far" in text
+        assert "W 2.000 GB known · R 1.000 GB known" in text
+        assert "active 1h 00m" in text and "30–44°C" in text
+
+    def test_missing_day_text_is_unavailable(self, conn, kolkata):
+        local_date, local = selected_local_day(conn, ActivitySelection(), NOW)
+        assert local is None
+        assert "local-day evidence unavailable" in local_day_text(local_date, local)
+
+
+class TestHours:
+    def _selected_day(self, conn):
+        _kolkata_day(conn, "2026-09-29")
+        selection = ActivitySelection()
+        selection.select_history_date(
+            "2026-09-29",
+            HistoryDayIdentity(
+                "2026-09-29", "Asia/Kolkata",
+                "2026-09-28T18:30:00+00:00", "2026-09-29T18:30:00+00:00",
+            ),
+        )
+        selection.set_view("day")
+        return selection
+
+    def test_hours_only_in_day_view_with_local_and_secondary_utc_labels(self, conn, kolkata):
+        selection = self._selected_day(conn)
+        _hour(conn, "2026-09-28T19:00:00+00:00", written=4_000_000_000,
+              active=600, idle=2400, off=0, unknown=600, tmin=31, tmax=40,
+              coverage=0.8)
+        result = readout(conn, selection, NOW)
+        first = result.hours[0]
+        assert first["local_label"] == "00:30"
+        assert first["timezone_label"] == "Asia/Kolkata +05:30"
+        assert first["utc_label"] == "2026-09-28 19:00 UTC"
+        assert first["bytes_written"] == 4_000_000_000
+        text = hour_readout_text(first, "2026-09-29")
+        assert "00:30 Asia/Kolkata +05:30" in text
+        assert text.splitlines()[-1] == "2026-09-28 19:00 UTC"
+        assert "active 10m · idle 40m · off 0m · unknown 10m" in text
+        assert "31–40°C" in text
+
+    def test_live_view_has_no_hours(self, conn, kolkata):
+        _kolkata_day(conn, "2026-09-29")
+        assert readout(conn, ActivitySelection(), NOW).hours == ()
+
+    def test_missing_hour_is_gap_and_future_hour_is_not(self, conn, kolkata):
+        _kolkata_day(conn, "2026-10-01")
+        selection = ActivitySelection()
+        selection.select_history_date("2026-10-01")
+        selection.set_view("day")
+        result = readout(conn, selection, NOW)
+        past = next(h for h in result.hours if h["local_label"] == "00:30")
+        future = next(h for h in result.hours if h["local_label"] == "06:30")
+        assert past["is_gap"] and not past["is_future"]
+        assert future["is_future"] and not future["is_gap"]
+        assert "W unavailable · R unavailable" in hour_readout_text(past, "2026-10-01")
+
+
+class TestLiveIntervals:
+    def test_interval_labels_are_local_with_secondary_utc_line(self, conn, kolkata):
+        _sample(conn, "2026-09-30T19:30:00+00:00", 1000, 500)
+        _sample(conn, "2026-09-30T19:33:00+00:00", 3000, 900, temp=41)
+        result = readout(conn, ActivitySelection(), NOW)
+        point = result.live[0]
+        assert point["start_label"] == "01:00"
+        assert point["end_label"] == "01:03"
+        assert point["timezone_label"] == "Asia/Kolkata +05:30"
+        assert point["bytes_written"] == 2000
+        assert point["temperature_c"] == 41
+        text = interval_readout_text(point)
+        assert "01:00 → 01:03 Asia/Kolkata +05:30" in text
+        assert text.splitlines()[-1] == "19:30 → 19:33 UTC"
+        assert "41°C" in text
+
+    def test_drive_warning_is_part_of_the_readout(self, conn, kolkata):
+        _sample(conn, "2026-09-30T19:30:00+00:00", 1000, 500)
+        _sample(conn, "2026-09-30T19:33:00+00:00", 3000, 900, critical=4)
+        point = readout(conn, ActivitySelection(), NOW).live[0]
+        assert "critical warning" in interval_readout_text(point)
+
+    def test_segment_boundary_is_unavailable(self, conn, kolkata):
+        _sample(conn, "2026-09-30T19:30:00+00:00", 1000, 500, segment=1)
+        _sample(conn, "2026-09-30T19:33:00+00:00", 5, 5, segment=2)
+        point = readout(conn, ActivitySelection(), NOW).live[0]
+        assert "segment boundary" in interval_readout_text(point)
+        assert "W unavailable · R unavailable" in interval_readout_text(point)
+
+
+class TestTimezone:
+    def test_utc_zone_still_carries_a_label(self, conn, monkeypatch):
+        monkeypatch.setenv("TZ", "UTC")
+        _sample(conn, "2026-09-30T19:30:00+00:00", 1000, 500)
+        _sample(conn, "2026-09-30T19:33:00+00:00", 3000, 900)
+        result = readout(conn, ActivitySelection(), NOW)
+        assert result.timezone_name == "UTC"
+        assert result.timezone_label == "UTC +00:00"
+        assert result.live[0]["start_label"] == "19:30"
+        assert result.live[0]["timezone_label"] == "UTC +00:00"
+
+    def test_unknown_zone_falls_back_to_utc(self, conn, monkeypatch):
+        monkeypatch.setenv("TZ", "Not/AZone")
+        assert readout(conn, ActivitySelection(), NOW).timezone_name == "UTC"
+
+    def test_health_comes_from_the_latest_sample(self, conn, kolkata):
+        assert readout(conn, ActivitySelection(), NOW).health["model"] == "unknown"
+        _sample(conn, "2026-09-30T19:30:00+00:00", 1000, 500, temp=38)
+        assert readout(conn, ActivitySelection(), NOW).health["temp"] == 38
+
+
+class TestTimeFormatting:
+    def test_freshness_age_human_lives_here(self):
+        assert freshness_age_human(30) == "30s ago"
+        assert freshness_age_human(None) == "unknown age"
+
+    def test_local_timestamp_names_the_zone(self):
+        when = datetime(2026, 9, 30, 20, 0, tzinfo=timezone.utc)
+        assert local_timestamp(when, "Asia/Kolkata") == (
+            "2026-10-01 01:30 Asia/Kolkata +05:30"
+        )
+
+    def test_utc_labels(self):
+        a = datetime(2026, 9, 30, 19, 30, tzinfo=timezone.utc)
+        b = datetime(2026, 9, 30, 19, 33, tzinfo=timezone.utc)
+        assert utc_range_label(a, b) == "19:30 → 19:33 UTC"
+        assert utc_stamp_label(a) == "2026-09-30 19:30 UTC"
+
+
+def _counters(conn, ts, poh, cycles, unsafe, media, spare, critical=0):
+    conn.execute(
+        "INSERT INTO samples (ts, device, data_units_written, data_units_read, "
+        "percentage_used, bytes_written, bytes_read, power_on_hours, "
+        "power_cycles, unsafe_shutdowns, media_errors, available_spare, "
+        "segment_id, temperature_c, critical_warning) "
+        "VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)",
+        (ts, "/dev/nvme0n1", 1, 1, 1, 1, 1, poh, cycles, unsafe, media, spare,
+         1, 35, critical),
+    )
+    conn.commit()
+
+
+class TestCriticalWarning:
+    def test_zero_decodes_to_nothing_and_each_bit_to_its_meaning(self):
+        assert decode_critical_warning(0) == ()
+        assert decode_critical_warning(None) == ()
+        assert decode_critical_warning(0x01) == ("available spare below threshold",)
+        assert decode_critical_warning(0x05) == (
+            "available spare below threshold", "reliability degraded",
+        )
+        assert "temperature outside threshold" in decode_critical_warning(0x02)
+        assert "media in read-only mode" in decode_critical_warning(0x08)
+        assert "volatile memory backup failed" in decode_critical_warning(0x10)
+        assert "persistent memory region read-only" in decode_critical_warning(0x20)
+        assert decode_critical_warning(0x40) == ("unrecognised bits 0x40",)
+
+    def test_health_carries_latest_critical_warning_and_badge_follows_it(self, conn, kolkata):
+        _counters(conn, "2026-09-30T19:00:00+00:00", 10, 1, 0, 0, 100, critical=0)
+        assert critical_warning_badge(
+            readout(conn, ActivitySelection(), NOW).health) == ""
+        _counters(conn, "2026-09-30T19:30:00+00:00", 11, 1, 0, 0, 100, critical=0x04)
+        health = readout(conn, ActivitySelection(), NOW).health
+        assert health["critical_warning"] == 0x04
+        badge = critical_warning_badge(health)
+        assert "0x04" in badge and "reliability degraded" in badge
+
+    def test_no_samples_means_no_badge(self, conn, kolkata):
+        assert critical_warning_badge(
+            readout(conn, ActivitySelection(), NOW).health) == ""
+
+
+class TestDiagnosticsReadout:
+    def test_diagnostics_are_absent_until_selected(self, conn, kolkata):
+        assert readout(conn, ActivitySelection(), NOW).diagnostics is None
+        selection = ActivitySelection()
+        selection.toggle_diagnostics()
+        assert selection.diagnostics
+        assert readout(conn, selection, NOW).diagnostics is not None
+        selection.toggle_diagnostics()
+        assert not selection.diagnostics
+
+    def test_live_counters_have_deltas_over_the_live_window(self, conn, kolkata):
+        _counters(conn, "2026-09-30T16:00:00+00:00", 90, 5, 1, 0, 100)  # before window
+        _counters(conn, "2026-09-30T18:00:00+00:00", 100, 6, 1, 0, 100)
+        _counters(conn, "2026-09-30T19:50:00+00:00", 103, 8, 3, 2, 98, critical=0x02)
+        selection = ActivitySelection()
+        selection.toggle_diagnostics()
+        diag = readout(conn, selection, NOW).diagnostics
+        assert diag["window_label"] == "last 3h"
+        assert diag["critical_warning"] == 0x02
+        assert diag["critical_warning_flags"] == ("temperature outside threshold",)
+        counters = diag["counters"]
+        assert counters["power_on_hours"] == {"value": 103, "delta": 13}
+        assert counters["power_cycles"] == {"value": 8, "delta": 3}
+        assert counters["unsafe_shutdowns"] == {"value": 3, "delta": 2}
+        assert counters["media_errors"] == {"value": 2, "delta": 2}
+        assert counters["available_spare"] == {"value": 98, "delta": -2}
+
+    def test_no_delta_across_a_controller_segment_change(self, conn, kolkata):
+        _counters(conn, "2026-09-30T18:00:00+00:00", 100, 6, 1, 0, 100)
+        _counters(conn, "2026-09-30T19:50:00+00:00", 5, 1, 0, 0, 100)
+        conn.execute("UPDATE samples SET segment_id = 2 WHERE ts > '2026-09-30T19'")
+        conn.commit()
+        selection = ActivitySelection()
+        selection.toggle_diagnostics()
+        counters = readout(conn, selection, NOW).diagnostics["counters"]
+        assert counters["power_on_hours"] == {"value": 5, "delta": None}
+
+    def test_single_sample_has_no_delta(self, conn, kolkata):
+        _counters(conn, "2026-09-30T19:50:00+00:00", 103, 8, 3, 2, 98)
+        selection = ActivitySelection()
+        selection.toggle_diagnostics()
+        counters = readout(conn, selection, NOW).diagnostics["counters"]
+        assert counters["power_on_hours"] == {"value": 103, "delta": None}
+
+    def test_day_selection_measures_deltas_across_that_local_day(self, conn, kolkata):
+        selection = TestHours()._selected_day(conn)
+        _counters(conn, "2026-09-28T18:00:00+00:00", 50, 2, 0, 0, 100)
+        _counters(conn, "2026-09-29T06:00:00+00:00", 56, 2, 1, 0, 100)
+        _counters(conn, "2026-09-29T20:00:00+00:00", 99, 9, 9, 9, 50)  # after the day
+        selection.toggle_diagnostics()
+        diag = readout(conn, selection, NOW).diagnostics
+        assert diag["window_label"] == "day 2026-09-29"
+        assert diag["counters"]["power_on_hours"] == {"value": 56, "delta": 6}
+        assert diag["counters"]["unsafe_shutdowns"]["delta"] == 1
+
+    def test_hours_carry_temperature_average(self, conn, kolkata):
+        selection = TestHours()._selected_day(conn)
+        _hour(conn, "2026-09-29T00:00:00+00:00", active=1800, idle=1800,
+              tmin=31, tavg=36.5, tmax=44)
+        hour = next(h for h in readout(conn, selection, NOW).hours
+                    if h["hour"] == "2026-09-29T00:00:00+00:00")
+        assert (hour["temperature_min"], hour["temperature_avg"],
+                hour["temperature_max"]) == (31, 36.5, 44)
+
+    def test_history_days_carry_split_and_temperature_range(self, conn, kolkata):
+        _kolkata_day(conn, "2026-09-29")
+        _hour(conn, "2026-09-29T00:00:00+00:00", active=1800, idle=1200, off=600,
+              tmin=30, tavg=34.0, tmax=40)
+        _hour(conn, "2026-09-29T01:00:00+00:00", active=0, idle=3000, unknown=600,
+              tmin=28, tavg=30.0, tmax=33)
+        selection = ActivitySelection()
+        selection.set_view("history")
+        selection.toggle_diagnostics()
+        days = {d["day"]: d for d in readout(conn, selection, NOW).diagnostics["days"]}
+        day = days["2026-09-29"]
+        assert (day["active_seconds"], day["idle_seconds"],
+                day["powered_off_seconds"], day["unknown_seconds"]) == (1800, 4200, 600, 600)
+        assert (day["temperature_min"], day["temperature_max"]) == (28, 40)
+        assert day["temperature_avg"] == pytest.approx(32.0)
+        assert "2026-09-30" not in days  # no evidence, no invented split
+
+
+class TestDiagnosticsText:
+    def _diag(self, conn, selection):
+        selection.toggle_diagnostics()
+        return readout(conn, selection, NOW)
+
+    def test_panel_shows_decoded_warning_counters_and_deltas(self, conn, kolkata):
+        _counters(conn, "2026-09-30T18:00:00+00:00", 100, 6, 1, 0, 100)
+        _counters(conn, "2026-09-30T19:50:00+00:00", 103, 8, 3, 2, 98, critical=0x05)
+        text = diagnostics_text(self._diag(conn, ActivitySelection()))
+        assert "last 3h" in text
+        assert "0x05" in text and "reliability degraded" in text
+        assert "Power-on hours" in text and "103" in text and "+3" in text
+        assert "Unsafe shutdowns" in text and "+2" in text
+        assert "Available spare" in text and "98%" in text and "-2" in text
+
+    def test_no_warning_says_none_and_missing_delta_says_so(self, conn, kolkata):
+        _counters(conn, "2026-09-30T19:50:00+00:00", 103, 8, 3, 2, 98)
+        text = diagnostics_text(self._diag(conn, ActivitySelection()))
+        assert "Critical warning none" in text
+        assert "Δ n/a" in text
+
+    def test_day_view_lists_each_hour_with_temperature_split_and_coverage(self, conn, kolkata):
+        selection = TestHours()._selected_day(conn)
+        _hour(conn, "2026-09-29T00:00:00+00:00", active=1800, idle=1200, off=300,
+              unknown=300, tmin=31, tavg=36.4, tmax=44, coverage=0.75)
+        text = diagnostics_text(self._diag(conn, selection))
+        row = next(line for line in text.splitlines() if line.startswith("05:30"))
+        assert "31/36/44°C" in row
+        assert "A30m I20m Off5m ?5m" in row
+        assert "75%" in row
+        assert any("gap" in line for line in text.splitlines()
+                   if line.startswith("06:30"))
+
+    def test_history_view_lists_each_day_with_split_and_temperature(self, conn, kolkata):
+        _kolkata_day(conn, "2026-09-29")
+        _hour(conn, "2026-09-29T00:00:00+00:00", active=7200, idle=3600, off=0,
+              tmin=30, tavg=34.0, tmax=40)
+        selection = ActivitySelection()
+        selection.set_view("history")
+        text = diagnostics_text(self._diag(conn, selection))
+        row = next(line for line in text.splitlines() if line.startswith("09-29"))
+        assert "A2h 00m" in row and "I1h 00m" in row and "30/34/40°C" in row
+
+    def test_live_view_summarises_interval_temperature(self, conn, kolkata):
+        for index, (minute, temp) in enumerate(((0, 30), (3, 36), (6, 42))):
+            conn.execute(
+                "INSERT INTO samples (ts, device, bytes_written, bytes_read, "
+                "segment_id, temperature_c) VALUES (?,?,?,?,?,?)",
+                ("2026-09-30T19:%02d:00+00:00" % (50 + minute), "/dev/n", index, index, 1, temp),
+            )
+        conn.commit()
+        text = diagnostics_text(self._diag(conn, ActivitySelection()))
+        assert "36/39/42°C" in text and "2 intervals" in text  # interval ends

tests/test_collector_history_tracer.py

@@ -8,7 +8,6 @@ Seams:
 - write side: run_collection() → observation store
 - read side: get_status(), compute_projection() → observation store
 """
-import os
 import sqlite3
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
@@ -19,10 +18,9 @@ import sys
 
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
-from fenris.collector import run_collection, normalize_identity
+from fenris.collector import run_collection
-from fenris.store import init_store, get_store_path, SCHEMA_VERSION
+from fenris.store import init_store, SCHEMA_VERSION
-from fenris.monitoring_periods import ensure_period_open, close_period, get_open_period
+from fenris.monitoring_periods import close_period, get_open_period
-from fenris.day_aggregate import derive_day, derive_all_days
 
 
 # ---------------------------------------------------------------------------
@@ -154,7 +152,7 @@ class TestSchemaMigration:
 
         # Migrate
         steps = migrate_to_latest(db)
-        assert steps == 5  # v1→v2→v3→v4→v5→v6
+        assert steps == 6  # v1→v2→v3→v4→v5→v6→v7
 
         # Verify data preserved
         conn = sqlite3.connect(str(db))
@@ -573,7 +571,6 @@ class TestDisplayStates:
 
     def test_one_sample_awaiting_another_in_tui(self, tmp_path):
         """One sample → TUI shows awaiting state."""
-        from fenris.tui import FenrisTuiApp
         db = tmp_path / "test.db"
         conn = init_store(db)
         conn.execute(

tests/test_collector_tracer.py

@@ -6,13 +6,11 @@ Tests the thinnest complete write path through the system:
 
 Seam: write side of the observation store database file.
 """
-import json
 import os
 import sqlite3
-import tempfile
 from datetime import datetime, timezone
 from pathlib import Path
-from typing import Any, Dict, Generator
+from typing import Any, Dict
 
 import pytest
 
@@ -20,8 +18,8 @@ import pytest
 import sys
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
-from fenris.collector import run_collection, AcquisitionError, InvariantViolationError
+from fenris.collector import run_collection
-from fenris.store import init_store, get_store_path
+from fenris.store import init_store
 
 
 # Fixtures

tests/test_complete_observation_day_gate.py

@@ -1,19 +1,20 @@
-"""Complete observation day gate tests (issue #94).
+"""Complete observation day condition tests (issues #94, #106).
 
-Verifies that the endurance projection is withheld until at least one
+Originally a gate (issue #94); ADR 0012 turned it into a contributing
-complete local calendar day has been observed within a monitoring period.
+fact.  The projection is no longer withheld until one complete local
+calendar day has been observed within a monitoring period, but it says
+so while that condition is unmet.
 
 Seams:
 - compute_projection() → gate check via local_days table
 - ProjectionResult.contributing_facts → "waiting for a full local observation day"
 
 Acceptance criteria:
-- Gate-1: No complete local day → UNSUPPORTED with waiting fact
+- Gate-1: No complete local day → projection renders with waiting fact
-- Gate-2: One complete local day → Limited confidence (if other conditions met)
+- Gate-2: One complete local day → no waiting fact
-- Gate-3: Partial days don't satisfy the gate
+- Gate-3: Partial days don't satisfy the condition
 - Gate-4: CLI and TUI share the same gate via compute_projection()
 """
-import sqlite3
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
 
@@ -24,8 +25,7 @@ sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 from fenris.store import init_store
 from fenris.monitoring_periods import ensure_period_open
 from fenris.projection import (
-    compute_projection, ConfidenceState, BaselineTier,
+    compute_projection, ConfidenceState,
-    WARMING_COVERAGE_FLOOR,
 )
 
 
@@ -78,8 +78,8 @@ def _insert_day(conn, day, bw=1024*1024*100, coverage=0.95, samples=24):
 def _insert_sample(conn, ts, pu=5):
     conn.execute(
         "INSERT INTO samples (ts, device, data_units_written, data_units_read, "
-        "percentage_used, bytes_written, bytes_read, power_on_hours) "
+        "percentage_used, bytes_written, bytes_read, power_on_hours, segment_id) "
-        "VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+        "VALUES (?, ?, ?, ?, ?, ?, ?, ?, 1)",
         (ts, "/dev/nvme0n1", 1000000, 500000, pu, 512000000000, 256000000000, 8765),
     )
     conn.commit()
@@ -111,14 +111,14 @@ def _open_period(conn, start="2026-09-01T00:00:00+00:00"):
 
 
 # ---------------------------------------------------------------------------
-# Gate-1: No complete local day → UNSUPPORTED with waiting fact
+# Gate-1: No complete local day → projection renders with waiting fact
 # ---------------------------------------------------------------------------
 
 class TestGateNoCompleteDay:
-    """Projection is unavailable before any complete local observation day."""
+    """Projection still renders before any complete local observation day."""
 
-    def test_no_local_days_unsupported(self, store):
+    def test_no_local_days_states_waiting_fact(self, store):
-        """With no local_days entries, projection is UNSUPPORTED."""
+        """With no local_days entries, the projection renders and says it is waiting."""
         _insert_baseline(store)
         _insert_segment(store)
         _open_period(store)
@@ -128,11 +128,11 @@ class TestGateNoCompleteDay:
             _insert_day(store, d, bw=1024*1024*100)
         _insert_sample(store, "2026-09-30T10:00:00+00:00", pu=5)
         result = compute_projection(store, _clock())
-        assert result.confidence_state == ConfidenceState.UNSUPPORTED
+        assert result.confidence_state != ConfidenceState.UNSUPPORTED
         assert any("full local observation day" in f for f in result.contributing_facts)
-        assert result.headline_remaining_seconds is None
+        assert result.headline_remaining_seconds is not None
 
-    def test_only_partial_local_days_unsupported(self, store):
+    def test_only_partial_local_days_state_waiting_fact(self, store):
         """Partial (incomplete) local days don't satisfy the gate."""
         _insert_baseline(store)
         _insert_segment(store)
@@ -146,7 +146,7 @@ class TestGateNoCompleteDay:
             d = (datetime(2026, 9, 25) + timedelta(days=i)).strftime("%Y-%m-%d")
             _insert_local_day(store, d, complete=False, coverage=0.3)
         result = compute_projection(store, _clock())
-        assert result.confidence_state == ConfidenceState.UNSUPPORTED
+        assert result.confidence_state != ConfidenceState.UNSUPPORTED
         assert any("full local observation day" in f for f in result.contributing_facts)
 
     def test_gate_before_warming_check(self, store):
@@ -166,7 +166,7 @@ class TestGateNoCompleteDay:
         # The key assertion: gate message should NOT appear when gate IS met
         assert not any("full local observation day" in f for f in result.contributing_facts)
 
-    def test_complete_legacy_day_without_trusted_activity_does_not_open_gate(
+    def test_complete_legacy_day_without_trusted_activity_keeps_waiting_fact(
         self, store,
     ):
         """A complete flag cannot make unavailable local activity qualify."""
@@ -183,7 +183,40 @@ class TestGateNoCompleteDay:
             "WHERE local_date = '2026-09-29'"
         )
         result = compute_projection(store, _clock())
-        assert result.confidence_state == ConfidenceState.UNSUPPORTED
+        assert result.confidence_state != ConfidenceState.UNSUPPORTED
+        assert any("full local observation day" in fact
+                   for fact in result.contributing_facts)
+
+    def test_day_split_by_deliberate_pause_keeps_waiting_fact(self, store):
+        """A complete-looking summary cannot span separate monitoring periods."""
+        _insert_baseline(store)
+        _insert_segment(store)
+        for i in range(20):
+            day = (datetime(2026, 9, 10) + timedelta(days=i)).strftime("%Y-%m-%d")
+            _insert_day(store, day, bw=1024 * 1024 * 100)
+        _insert_sample(store, "2026-09-30T10:00:00+00:00", pu=5)
+
+        store.executemany(
+            "INSERT INTO monitoring_periods (started_at, ended_at, end_cause) "
+            "VALUES (?, ?, ?)",
+            [
+                ("2026-09-29T00:00:00+00:00", "2026-09-29T12:00:00+00:00", "user_disabled"),
+                ("2026-09-29T13:00:00+00:00", "2026-09-30T00:00:00+00:00", "user_disabled"),
+                ("2026-09-30T00:00:00+00:00", None, None),
+            ],
+        )
+        store.commit()
+        _insert_local_day(
+            store,
+            "2026-09-29",
+            utc_start="2026-09-29T00:00:00+00:00",
+            utc_end="2026-09-30T00:00:00+00:00",
+            complete=True,
+        )
+
+        result = compute_projection(store, _clock())
+
+        assert result.confidence_state != ConfidenceState.UNSUPPORTED
         assert any("full local observation day" in fact
                    for fact in result.contributing_facts)
 
@@ -257,7 +290,7 @@ class TestGateOneCompleteDay:
 class TestGatePartialFirstDay:
     """Starting monitoring at noon means the partial first day doesn't count."""
 
-    def test_partial_first_day_not_enough(self, store):
+    def test_partial_first_day_keeps_waiting_fact(self, store):
         """A single incomplete local day (started at noon) doesn't open the gate."""
         _insert_baseline(store)
         _insert_segment(store, opened_at="2026-09-29T12:00:00+00:00")
@@ -270,7 +303,7 @@ class TestGatePartialFirstDay:
         _insert_local_day(store, "2026-09-29", complete=False, coverage=0.5)
         _insert_local_day(store, "2026-09-30", complete=False, coverage=0.5)
         result = compute_projection(store, _clock())
-        assert result.confidence_state == ConfidenceState.UNSUPPORTED
+        assert result.confidence_state != ConfidenceState.UNSUPPORTED
         assert any("full local observation day" in f for f in result.contributing_facts)
 
 

tests/test_cross_day_duplication.py

@@ -6,7 +6,7 @@ shared boundary evidence, not duplicated into both days.
 Seam: derive._add_unattributed_bytes() → day_aggregates.unattributed_bytes_*
 """
 import sqlite3
-from datetime import datetime, timedelta, timezone
+from datetime import datetime, timezone
 from pathlib import Path
 
 import pytest
@@ -14,8 +14,6 @@ import sys
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
 from fenris.collector import run_collection
-from fenris.store import init_store
-from fenris.monitoring_periods import ensure_period_open
 
 
 def _make_smartctl(duw: int, dur: int):

tests/test_dashboard_design.py

@@ -20,6 +20,7 @@ NOW = datetime(2026, 9, 19, 12, tzinfo=timezone.utc)
 @pytest.fixture
 def dashboard(tmp_path, monkeypatch):
     monkeypatch.setenv("XDG_CONFIG_HOME", str(tmp_path / "prefs"))
+    monkeypatch.setenv("TZ", "UTC")
 
     class Clock(datetime):
         @classmethod
@@ -124,6 +125,19 @@ async def test_mouse_inspection_matches_time_axis(dashboard):
         assert "09:00 → 09:03 UTC" in text
 
 
+@pytest.mark.asyncio
+async def test_live_readout_shows_local_time_with_secondary_utc_line(dashboard, monkeypatch):
+    monkeypatch.setenv("TZ", "Asia/Kolkata")
+    app = dashboard
+    async with app.run_test(size=(100, 36)) as pilot:
+        await pilot.pause()
+        await pilot.press("left")
+        text = str(app.query_one("#live-readout").render())
+        assert "17:24 → 17:27 Asia/Kolkata +05:30" in text
+        assert text.splitlines()[-1] == "11:54 → 11:57 UTC"
+        assert "local time" in str(app.query_one("#live-legend").render())
+
+
 @pytest.mark.asyncio
 async def test_theme_control_persists_choice_and_quit_never_pauses(dashboard, monkeypatch):
     calls = []
@@ -144,14 +158,27 @@ async def test_unallocated_volume_survives_day_with_missing_coverage(dashboard,
         await pilot.click("#view-history")
         graph = dashboard.query_one("#usage-history")
         graph.set_data([{
-            "day": "2026-09-18", "total_bytes": 2_000_000_000,
+            "day": "2026-09-18", "local_label": "2026-09-18",
-            "unallocated_bytes": 2_000_000_000, "is_gap": True,
+            "timezone_label": "UTC +00:00", "identity": None,
-            "is_partial": True,
+            "total_bytes": None, "total_written": None, "total_read": None,
+            "shared_bytes_written": 2_000_000_000, "shared_bytes_read": 0,
+            "unallocated_bytes_written": 2_000_000_000,
+            "unallocated_bytes_read": 0, "activity_state": "incomplete",
+            "is_gap": True, "is_partial": True,
         }])
         readout = str(dashboard.query_one("#bar-readout").render())
-        assert "W 2.000 GB unallocated" in readout
+        assert "unallocated W 2.000 GB" in readout
-        assert "R unavailable" in readout and "gap" in readout
+        assert "W unavailable · R unavailable" in readout
         if size[0] >= 80:
+            graph.set_data([{
+                "day": "2026-09-18", "local_label": "2026-09-18",
+                "timezone_label": "UTC +00:00", "identity": None,
+                "total_bytes": 2_000_000_000, "total_written": 2_000_000_000,
+                "total_read": None, "shared_bytes_written": 2_000_000_000,
+                "shared_bytes_read": 0, "unallocated_bytes_written": 0,
+                "unallocated_bytes_read": 0, "activity_state": "incomplete",
+                "is_gap": False, "is_partial": True,
+            }])
             plot = str(dashboard.query_one("#bar-render").render())
             assert any(0x2801 <= ord(c) <= 0x28ff for c in plot)
             graph.measure = "read"
@@ -167,7 +194,9 @@ async def test_small_terminal_hour_readout_does_not_invent_zero(dashboard, state
         await pilot.click("#view-day")
         graph = dashboard.query_one("#usage-history")
         graph.set_hour_data([{
-            "hour": "2026-09-18T12:00:00+00:00", "local_label": "12",
+            "hour": "2026-09-18T12:00:00+00:00", "local_label": "12:00",
+            "timezone_label": "UTC +00:00",
+            "utc_label": "2026-09-18 12:00 UTC",
             "is_gap": state == "gap", "is_future": state == "future",
         }])
         graph._hourly_selected = 0

tests/test_day_aggregates.py

@@ -7,9 +7,8 @@ From spec §5.4, §3.3, ST-4, ST-5:
   whose classification is known
 - No absent hour ever interpolated/estimated/fabricated (FL-3)
 """
-import sqlite3
 import sys
-from datetime import datetime, timezone, timedelta
+from datetime import datetime, timezone
 from pathlib import Path
 
 import pytest
@@ -18,8 +17,8 @@ sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
 from fenris.store import init_store
 from fenris.monitoring_periods import ensure_period_open, close_period
-from fenris.day_aggregate import derive_day, derive_all_days, DayAggregate
+from fenris.day_aggregate import derive_day, derive_all_days
-from fenris.hour_classify import HourSplit, ACTIVE_THRESHOLD_BYTES
+from fenris.hour_classify import HourSplit
 
 
 @pytest.fixture

tests/test_hour_classification.py

@@ -11,11 +11,10 @@ Four splits sum to exactly 3600s. Disabled time is never an hour state.
 import sys
 from pathlib import Path
 
-import pytest
 
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
-from fenris.hour_classify import classify_hour, HourSplit, ACTIVE_THRESHOLD_BYTES
+from fenris.hour_classify import classify_hour, ACTIVE_THRESHOLD_BYTES
 
 HOUR_SECONDS = 3600
 

tests/test_identity_normalization.py

@@ -7,7 +7,6 @@ From spec §2.3:
 
 Padded and unpadded renderings of the same field yield byte-identical stored values.
 """
-import pytest
 import sys
 from pathlib import Path
 

tests/test_init_system.py

@@ -9,12 +9,9 @@ Covers:
 
 Spec: ADR 0008, §8.4, §8.5, §8.6, §8.7, §8.8
 """
-import os
 import sqlite3
-import tempfile
-from datetime import datetime, timedelta, timezone
 from pathlib import Path
-from unittest.mock import patch, MagicMock, PropertyMock
+from unittest.mock import patch, MagicMock
 
 import pytest
 
@@ -24,7 +21,6 @@ sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 from fenris.init_system import (
     InitSystem,
     detect_init_system,
-    get_init_system,
     reset_init_system_cache,
     _systemd_enable,
     _systemd_disable,
@@ -41,8 +37,6 @@ from fenris.init_system import (
     collect_now,
     query_service_state,
     journal_hint,
-    FENRIS_SV_DIR,
-    FENRIS_SERVICE_LINK,
     COLLECT_TIMEOUT_S,
 )
 from fenris.store import init_store
@@ -685,11 +679,19 @@ class TestEdgeCases:
 
     def test_runit_collect_missing_script(self):
         """Runit collect exits when fenris-collect script not found."""
-        with patch("fenris.init_system.Path") as mock_path:
+        with patch("fenris.init_system.subprocess") as mock_sub, \
-            mock_path.return_value.exists.return_value = False
+             patch("fenris.init_system.Path") as mock_path:
+            missing = MagicMock()
+            missing.exists.return_value = False
+            # Fallback path is built via Path(...).parent... / "src" / ...
+            missing.parent = missing
+            missing.__truediv__.return_value = missing
+            mock_path.return_value = missing
+            mock_sub.run.return_value = MagicMock(returncode=1)
             with pytest.raises(SystemExit) as exc_info:
                 _runit_collect()
             assert exc_info.value.code == 1
+            mock_sub.run.assert_not_called()
 
     def test_systemd_query_state_timeout(self):
         """Systemd query state handles subprocess timeout."""

tests/test_issue_111.py

@@ -0,0 +1,251 @@
+"""Additional smartctl diagnostics (issue #111).
+
+Field list fixed from real `smartctl -a -j` output (smartctl 7.5, NVMe 1.4):
+nvme_smart_health_information_log carries warning_temp_time, critical_comp_time,
+num_err_log_entries, host_reads, host_writes and controller_busy_time. The
+thermal-management transition fields (thm_temp1/2_trans_count, thm_temp1/2_total_time)
+appear only on drives that implement them, so they stay nullable.
+"""
+import sqlite3
+import sys
+from datetime import datetime, timezone
+from pathlib import Path
+
+import pytest
+
+sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
+
+from fenris.activity_readout import diagnostics_text, readout
+from fenris.activity_selection import ActivitySelection
+from fenris.collector import acquire_from_smartctl, run_collection
+from fenris.store import SCHEMA_VERSION, init_store, migrate_to_latest
+
+NEW_COLUMNS = (
+    "host_reads", "host_writes", "controller_busy_time", "num_err_log_entries",
+    "warning_temp_time", "critical_comp_time",
+    "thm_temp1_trans_count", "thm_temp1_total_time",
+    "thm_temp2_trans_count", "thm_temp2_total_time",
+)
+
+
+def _smartctl(**extra_log):
+    """Shape of real smartctl -a -j output for an NVMe drive."""
+    log = {
+        "critical_warning": 0, "temperature": 37, "available_spare": 100,
+        "available_spare_threshold": 5, "percentage_used": 52,
+        "data_units_read": 207986339, "data_units_written": 202978899,
+        "host_reads": 3543447796, "host_writes": 2458441042,
+        "controller_busy_time": 61626, "power_cycles": 5324,
+        "power_on_hours": 11906, "unsafe_shutdowns": 159, "media_errors": 0,
+        "num_err_log_entries": 0, "warning_temp_time": 0, "critical_comp_time": 0,
+        "temperature_sensors": [37],
+    }
+    log.update(extra_log)
+    return {
+        "nvme_smart_health_information_log": log,
+        "user_capacity": {"bytes": 512110190592},
+        "model_name": "Drive", "serial_number": "SN1", "firmware_version": "FW1",
+    }
+
+
+class TestAcquisition:
+    def test_real_fields_are_captured(self):
+        got = acquire_from_smartctl(_smartctl())
+        assert got["host_reads"] == 3543447796
+        assert got["host_writes"] == 2458441042
+        assert got["controller_busy_time"] == 61626
+        assert got["num_err_log_entries"] == 0
+        assert got["warning_temp_time"] == 0
+        assert got["critical_comp_time"] == 0
+
+    def test_absent_thermal_management_fields_are_none_not_zero(self):
+        got = acquire_from_smartctl(_smartctl())
+        for key in ("thm_temp1_trans_count", "thm_temp1_total_time",
+                    "thm_temp2_trans_count", "thm_temp2_total_time"):
+            assert got[key] is None
+
+    def test_thermal_management_fields_captured_when_reported(self):
+        got = acquire_from_smartctl(_smartctl(
+            thm_temp1_trans_count=3, thm_temp1_total_time=120,
+            thm_temp2_trans_count=1, thm_temp2_total_time=45))
+        assert (got["thm_temp1_trans_count"], got["thm_temp1_total_time"]) == (3, 120)
+        assert (got["thm_temp2_trans_count"], got["thm_temp2_total_time"]) == (1, 45)
+
+    def test_missing_optional_counters_do_not_fail_the_run(self):
+        data = _smartctl()
+        for key in ("host_reads", "host_writes", "controller_busy_time",
+                    "num_err_log_entries", "warning_temp_time", "critical_comp_time"):
+            del data["nvme_smart_health_information_log"][key]
+        got = acquire_from_smartctl(data)
+        assert got["host_reads"] is None and got["warning_temp_time"] is None
+
+
+@pytest.fixture
+def sysfs(tmp_path):
+    ctrl = tmp_path / "nvme0"
+    ctrl.mkdir()
+    for name, value in (("subsysnqn", "nqn.test"), ("model", "Drive"),
+                        ("serial", "SN1"), ("firmware_rev", "FW1")):
+        (ctrl / name).write_text(value + "\n")
+    return ctrl
+
+
+class _Clock:
+    def utcnow(self):
+        return datetime(2026, 9, 1, 12, 0, tzinfo=timezone.utc)
+
+
+def test_collection_persists_new_fields(tmp_path, sysfs):
+    config = {"device": "/dev/nvme0", "store_path": str(tmp_path / "o.db")}
+    result = run_collection(smartctl_data=_smartctl(thm_temp1_trans_count=3),
+                            sysfs_path=sysfs, config=config, clock=_Clock())
+    assert result["ok"], result
+    conn = sqlite3.connect(config["store_path"])
+    conn.row_factory = sqlite3.Row
+    row = conn.execute("SELECT * FROM samples").fetchone()
+    assert row["host_reads"] == 3543447796
+    assert row["controller_busy_time"] == 61626
+    assert row["thm_temp1_trans_count"] == 3
+    assert row["thm_temp2_trans_count"] is None
+
+
+def _legacy_store(path):
+    """A populated schema-6 store, as shipped before this change."""
+    conn = init_store(path)
+    for column in reversed(NEW_COLUMNS):
+        conn.execute(f"ALTER TABLE samples DROP COLUMN {column}")
+    conn.execute("PRAGMA user_version=6")
+    for i in range(3):
+        conn.execute(
+            "INSERT INTO samples (ts, device, bytes_written, bytes_read, "
+            "power_on_hours, critical_warning, segment_id) VALUES (?,?,?,?,?,?,1)",
+            ("2026-09-30T1%d:00:00+00:00" % i, "/dev/nvme0", 10 + i, 5, 100 + i, 0))
+    conn.commit()
+    conn.close()
+
+
+class TestMigration:
+    def test_schema_version_is_seven(self):
+        assert SCHEMA_VERSION == 7
+
+    def test_populated_legacy_store_keeps_rows_and_gains_null_columns(self, tmp_path):
+        db = tmp_path / "o.db"
+        _legacy_store(db)
+        before = sqlite3.connect(db).execute(
+            "SELECT id, ts, device, bytes_written, power_on_hours FROM samples "
+            "ORDER BY id").fetchall()
+        assert migrate_to_latest(db) == 1
+        conn = sqlite3.connect(db)
+        assert conn.execute("PRAGMA user_version").fetchone()[0] == 7
+        assert conn.execute(
+            "SELECT id, ts, device, bytes_written, power_on_hours FROM samples "
+            "ORDER BY id").fetchall() == before
+        cols = {r[1] for r in conn.execute("PRAGMA table_info(samples)")}
+        assert set(NEW_COLUMNS) <= cols
+        nulls = conn.execute(
+            "SELECT %s FROM samples" % " OR ".join(c + " IS NOT NULL" for c in NEW_COLUMNS)
+        ).fetchall()
+        assert nulls == [(0,)] * 3  # legacy rows stay unknown, never zero
+
+    def test_migration_is_idempotent_and_init_store_applies_it(self, tmp_path):
+        db = tmp_path / "o.db"
+        _legacy_store(db)
+        conn = init_store(db)
+        assert conn.execute("PRAGMA user_version").fetchone()[0] == 7
+        conn.close()
+        assert migrate_to_latest(db) == 0
+
+    def test_pending_payload_without_new_fields_still_publishes(self, tmp_path):
+        """Observations staged by the previous version lack the new keys."""
+        db = tmp_path / "o.db"
+        conn = init_store(db)
+        from fenris.collector import write_sample
+        sample = {k: v for k, v in acquire_from_smartctl(_smartctl()).items()
+                  if k not in NEW_COLUMNS}
+        sample.update(ts="2026-09-01T12:00:00+00:00", device="/dev/nvme0")
+        write_sample(sample, {"subnqn": "nqn.test"}, conn,
+                     datetime(2026, 9, 1, 12, tzinfo=timezone.utc))
+        assert conn.execute("SELECT host_reads FROM samples").fetchone() == (None,)
+
+    def test_rollback_notes_procedure_restores_prior_schema(self, tmp_path):
+        """Documented rollback: drop the columns, set user_version back to 6."""
+        db = tmp_path / "o.db"
+        _legacy_store(db)
+        migrate_to_latest(db)
+        conn = sqlite3.connect(db)
+        conn.execute(
+            "UPDATE samples SET host_reads = 1 WHERE id = 1")
+        for column in NEW_COLUMNS:
+            conn.execute(f"ALTER TABLE samples DROP COLUMN {column}")
+        conn.execute("PRAGMA user_version=6")
+        conn.commit()
+        assert conn.execute("SELECT COUNT(*) FROM samples").fetchone() == (3,)
+        cols = {r[1] for r in conn.execute("PRAGMA table_info(samples)")}
+        assert not set(NEW_COLUMNS) & cols
+
+
+NOW = datetime(2026, 9, 30, 20, 0, tzinfo=timezone.utc)
+
+
+def _diag_sample(conn, ts, **values):
+    cols = ["ts", "device", "bytes_written", "bytes_read", "segment_id"] + list(values)
+    conn.execute(
+        "INSERT INTO samples (%s) VALUES (%s)" % (
+            ",".join(cols), ",".join("?" * len(cols))),
+        [ts, "/dev/nvme0n1", 1, 1, 1] + list(values.values()))
+    conn.commit()
+
+
+class TestDiagnosticsPanel:
+    @pytest.fixture
+    def conn(self, tmp_path):
+        c = init_store(tmp_path / "o.db")
+        yield c
+        c.close()
+
+    def _text(self, conn):
+        selection = ActivitySelection()
+        selection.toggle_diagnostics()
+        return diagnostics_text(readout(conn, selection, NOW))
+
+    def test_new_counters_show_value_and_delta(self, conn):
+        _diag_sample(conn, "2026-09-30T18:00:00+00:00", host_reads=1000,
+                     host_writes=500, controller_busy_time=60,
+                     num_err_log_entries=0, warning_temp_time=2,
+                     critical_comp_time=0)
+        _diag_sample(conn, "2026-09-30T19:50:00+00:00", host_reads=1300,
+                     host_writes=550, controller_busy_time=65,
+                     num_err_log_entries=1, warning_temp_time=2,
+                     critical_comp_time=0)
+        text = self._text(conn)
+        assert "Host reads 1300 Δ +300" in text
+        assert "Host writes 550 Δ +50" in text
+        assert "Controller busy time 65 min Δ +5" in text
+        assert "Error log entries 1 Δ +1" in text
+        assert "Warning temperature time 2 min Δ ±0" in text
+        assert "Critical temperature time 0 min Δ ±0" in text
+
+    def test_legacy_rows_read_n_a_and_absent_thermal_management_is_hidden(self, conn):
+        _diag_sample(conn, "2026-09-30T19:50:00+00:00", power_on_hours=5)
+        text = self._text(conn)
+        assert "Host reads n/a" in text
+        assert "Thermal management" not in text
+
+    def test_thermal_management_shown_when_the_drive_reports_it(self, conn):
+        _diag_sample(conn, "2026-09-30T19:50:00+00:00", thm_temp1_trans_count=3,
+                     thm_temp1_total_time=120, thm_temp2_trans_count=1,
+                     thm_temp2_total_time=45)
+        text = self._text(conn)
+        assert "Thermal management 1 transitions 3 Δ n/a" in text
+        assert "Thermal management 1 time 120 s Δ n/a" in text
+        assert "Thermal management 2 transitions 1 Δ n/a" in text
+
+    def test_unmigrated_store_still_renders_diagnostics(self, tmp_path):
+        """The dashboard may open a store before the upgrade migrates it."""
+        db = tmp_path / "legacy.db"
+        _legacy_store(db)
+        conn = sqlite3.connect(db)
+        selection = ActivitySelection()
+        selection.toggle_diagnostics()
+        text = diagnostics_text(readout(conn, selection, NOW))
+        assert "Host reads n/a" in text and "Power-on hours" in text

tests/test_issue_72_edge_cases.py

@@ -7,11 +7,9 @@ Covers:
 - TPH-#63: Horizon anchoring at evidence endpoint
 - TPH-#64: Burst/habit checks with unknown daily shares
 """
-import sqlite3
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
 
-import pytest
 import sys
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
@@ -19,8 +17,8 @@ from fenris.store import init_store
 from fenris.monitoring_periods import ensure_period_open, close_period
 from fenris.derive import derive_hours_from_interval
 from fenris.day_aggregate import derive_day
-from fenris.projection import compute_projection, ConfidenceState, STALENESS_HOURS
+from fenris.projection import compute_projection
-from fenris.tui import _query_live_graph_data, _query_daily_graph_data
+from fenris.activity_readout import _query_live_graph_data
 
 
 # ---------------------------------------------------------------------------
@@ -211,6 +209,8 @@ class TestStalenessFact:
         _insert_baseline(conn)
 
         base = datetime(2026, 9, 15, 12, 0, 0, tzinfo=timezone.utc)
+        ensure_period_open(conn, base)
+        conn.commit()
         for i in range(14):
             day = (base + timedelta(days=i)).strftime("%Y-%m-%d")
             _insert_day(conn, day, bw=10*1024*1024*1024)
@@ -234,6 +234,8 @@ class TestStalenessFact:
         _insert_baseline(conn)
 
         base = datetime(2026, 9, 18, 12, 0, 0, tzinfo=timezone.utc)
+        ensure_period_open(conn, base)
+        conn.commit()
         for i in range(14):
             day = (base + timedelta(days=i)).strftime("%Y-%m-%d")
             _insert_day(conn, day, bw=10*1024*1024*1024)

tests/test_issue_77.py

@@ -6,7 +6,6 @@ These tests verify that:
 3. Edge cases like zero-delta intervals and unknown daily shares are handled
 4. qualifying_days_progress shows honest qualifying day count
 """
-import sqlite3
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
 
@@ -15,10 +14,9 @@ import sys
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
 from fenris.store import init_store
-from fenris.monitoring_periods import ensure_period_open, close_period
+from fenris.monitoring_periods import ensure_period_open
 from fenris.projection import (
-    compute_projection, ConfidenceState, BaselineTier,
+    compute_projection, ConfidenceState,
-    WARMING_MIN_DAYS, WARMING_COVERAGE_FLOOR, WARMING_MAX_LOW_COVERAGE,
 )
 
 

tests/test_issue_79.py

@@ -5,7 +5,6 @@ Covers:
 - TPH-11: Single maker-credit placement, vendor wear under Drive health
 - Preserve: continuity, pause block, quit rail, auth banner
 """
-import sqlite3
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
 from unittest.mock import patch
@@ -93,8 +92,8 @@ class TestFenrisIdentity:
             store_path=tmp_path / "nonexistent.db",
             refresh_interval_s=0.2,
         )
-        async with app.run_test(size=(120, 24)) as pilot:
+        async with app.run_test(size=(120, 24)):
-            headline = str(app.query_one("#headline-band").render())
+            str(app.query_one("#headline-band").render())
             assert "🐺 Fenris by Bongbetic" in str(app.query_one("#identity").render())
 
     @pytest.mark.asyncio
@@ -105,8 +104,8 @@ class TestFenrisIdentity:
             refresh_interval_s=0.2,
         )
         # Simulate narrow terminal that can't render wolf
-        async with app.run_test(size=(60, 24)) as pilot:
+        async with app.run_test(size=(60, 24)):
-            headline = str(app.query_one("#headline-band").render())
+            str(app.query_one("#headline-band").render())
             # Either shows wolf or fallback - both are acceptable
             assert "Fenris by Bongbetic" in str(app.query_one("#identity").render())
 
@@ -117,7 +116,7 @@ class TestFenrisIdentity:
             store_path=tmp_path / "nonexistent.db",
             refresh_interval_s=0.2,
         )
-        async with app.run_test(size=(120, 24)) as pilot:
+        async with app.run_test(size=(120, 24)):
             headline = str(app.query_one("#headline-band").render())
             # No replacement character (U+FFFD) should appear
             assert "\ufffd" not in headline.lower()
@@ -137,7 +136,7 @@ class TestFenrisIdentity:
         conn.close()
 
         app = FenrisTuiApp(store_path=tmp_path / "test.db")
-        async with app.run_test(size=(120, 24)) as pilot:
+        async with app.run_test(size=(120, 24)):
             headline = str(app.query_one("#headline-band").render())
             # Identity appears once, lifespan is separate data
             assert "🐺 Fenris by Bongbetic" in str(app.query_one("#identity").render())
@@ -160,7 +159,7 @@ class TestSingleMakerCredit:
         conn.close()
 
         app = FenrisTuiApp(store_path=tmp_path / "test.db")
-        async with app.run_test(size=(120, 24)) as pilot:
+        async with app.run_test(size=(120, 24)):
             strip = str(app.query_one("#service-strip").render())
             # "by Bongbetic" should NOT appear in service strip
             assert "by Bongbetic" not in strip
@@ -172,15 +171,15 @@ class TestSingleMakerCredit:
             store_path=tmp_path / "nonexistent.db",
             refresh_interval_s=0.2,
         )
-        async with app.run_test(size=(120, 24)) as pilot:
+        async with app.run_test(size=(120, 24)):
-            headline = str(app.query_one("#headline-band").render())
+            str(app.query_one("#headline-band").render())
             assert "Fenris by Bongbetic" in str(app.query_one("#identity").render())
 
     @pytest.mark.asyncio
     async def test_empty_store_no_maker_credit_in_strip(self, tmp_path):
         """Empty store: no maker credit in service strip."""
         app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-        async with app.run_test(size=(120, 24)) as pilot:
+        async with app.run_test(size=(120, 24)):
             strip = str(app.query_one("#service-strip").render())
             assert "by Bongbetic" not in strip
 
@@ -191,7 +190,7 @@ class TestSingleMakerCredit:
         db = tmp_path / "test.db"
         db.write_bytes(b"not a database")
         app = FenrisTuiApp(store_path=db)
-        async with app.run_test(size=(120, 24)) as pilot:
+        async with app.run_test(size=(120, 24)):
             strip = str(app.query_one("#service-strip").render())
             assert "by Bongbetic" not in strip
 
@@ -212,7 +211,7 @@ class TestDriveHealthVendorWear:
         conn.close()
 
         app = FenrisTuiApp(store_path=tmp_path / "test.db")
-        async with app.run_test(size=(120, 24)) as pilot:
+        async with app.run_test(size=(120, 24)):
             health = str(app.query_one("#drive-health").render())
             # Vendor wear should be present with health context
             assert "vendor wear" in health.lower()
@@ -243,7 +242,7 @@ class TestDriveHealthVendorWear:
         conn.close()
 
         app = FenrisTuiApp(store_path=tmp_path / "test.db")
-        async with app.run_test(size=(120, 24)) as pilot:
+        async with app.run_test(size=(120, 24)):
             health = str(app.query_one("#drive-health").render())
             # Should show 0% used or honest zero, not crash
             assert "vendor wear" in health.lower()
@@ -265,7 +264,7 @@ class TestPreservedBehavior:
             "last_collect_ok": True, "last_collect_age_s": 60,
             "last_collect_reason": None,
         }):
-            async with app.run_test(size=(120, 24)) as pilot:
+            async with app.run_test(size=(120, 24)):
                 strip = str(app.query_one("#service-strip").render())
                 assert "continuity" in strip.lower()
                 assert "monitoring" in strip.lower()
@@ -274,7 +273,7 @@ class TestPreservedBehavior:
     async def test_quit_rail_preserved(self, tmp_path):
         """Separate q Quit TUI rail preserved."""
         app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-        async with app.run_test(size=(120, 24)) as pilot:
+        async with app.run_test(size=(120, 24)):
             rail = str(app.query_one("#action-rail").render())
             assert "q Quit TUI" in rail
 
@@ -286,11 +285,11 @@ class TestPreservedBehavior:
             refresh_interval_s=0.2,
         )
         async with app.run_test(size=(120, 24)) as pilot:
-            headline = str(app.query_one("#headline-band").render())
+            str(app.query_one("#headline-band").render())
             assert "polkit" in str(app.query_one("#auth-notice").render()).lower()
             # Should clear after first tick
             await pilot.pause(0.25)
-            headline_after = str(app.query_one("#headline-band").render())
+            str(app.query_one("#headline-band").render())
             assert not app.query_one("#auth-notice").display
 
     @pytest.mark.asyncio
@@ -312,7 +311,7 @@ class TestPreservedBehavior:
             "last_collect_ok": None, "last_collect_age_s": None,
             "last_collect_reason": None,
         }):
-            async with app.run_test(size=(120, 24)) as pilot:
+            async with app.run_test(size=(120, 24)):
                 banner = str(app.query_one("#paused-banner").render())
                 assert "paused" in banner.lower()
                 assert "deliberate" in banner.lower()

tests/test_issue_80.py

@@ -8,7 +8,6 @@ Covers:
   - AC80-5: Theme roles for graph rendering
   - AC80-6: Headless interaction tests with temporary user config
 """
-import json
 import os
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
@@ -21,15 +20,12 @@ sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
 from fenris.store import init_store
 from fenris.preferences import (
-    load_preferences,
     save_preferences,
-    get_preference_path,
 )
-from fenris.themes import get_theme, get_graph_colors, THEME_NAMES
+from fenris.themes import get_graph_colors, THEME_NAMES
 from fenris.status_composition import (
     StatusState,
     compose_status,
-    render_status_tui,
 )
 
 
@@ -100,7 +96,7 @@ class TestPresetLoading:
         config_home = _make_prefs_dir(tmp_path)
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 # Theme should be fenris-amber
                 assert app.theme == "fenris-chalktone"
 
@@ -113,7 +109,7 @@ class TestPresetLoading:
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             save_preferences(theme="nord", reduced_motion=False)
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 assert app.theme == "fenris-nord"
 
     @pytest.mark.asyncio
@@ -125,20 +121,19 @@ class TestPresetLoading:
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             save_preferences(theme="high_contrast", reduced_motion=False)
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 assert app.theme == "fenris-high-contrast"
 
     @pytest.mark.asyncio
     async def test_tui_applies_reduced_motion_from_prefs(self, tmp_path):
         """TUI respects reduced_motion preference."""
         from fenris.tui import FenrisTuiApp
-        from fenris.status_composition import compose_status
 
         config_home = _make_prefs_dir(tmp_path)
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             save_preferences(theme="amber", reduced_motion=True)
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 # The app should have reduced_motion set
                 assert app._reduced_motion is True
 
@@ -237,7 +232,7 @@ class TestPersistence:
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             # First run: change theme via preferences API
             app1 = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app1.run_test() as pilot:
+            async with app1.run_test():
                 save_preferences(theme="nord", reduced_motion=False)
                 app1._current_theme_name = "nord"
                 app1.theme = "fenris-nord"
@@ -246,7 +241,7 @@ class TestPersistence:
 
             # Second run: theme should persist
             app2 = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app2.run_test() as pilot:
+            async with app2.run_test():
                 assert app2.theme == theme_after
 
     @pytest.mark.asyncio
@@ -334,7 +329,7 @@ class TestReducedMotion:
         config_home = _make_prefs_dir(tmp_path)
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 # The app should check for reduced motion on mount
                 assert hasattr(app, '_reduced_motion')
 
@@ -380,7 +375,7 @@ class TestSafePersistence:
 
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 # TUI should start with default theme
                 assert app.theme == "fenris-chalktone"
                 # Dashboard should be functional
@@ -399,7 +394,7 @@ class TestSafePersistence:
 
         with patch.dict(os.environ, {"XDG_CONFIG_HOME": str(config_home)}):
             app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 # TUI should start without crash
                 assert app.theme in ("fenris-chalktone", "fenris-amber", "fenris-nord", "fenris-high-contrast")
 

tests/test_issue_92.py

@@ -10,7 +10,6 @@ Covers:
 - AC92-7: Keyboard actions verified from normal launch with headless driver
 - AC92-8: Equivalent clickable actions at 80x24 and constrained widths
 """
-import sqlite3
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
 from unittest.mock import patch
@@ -111,7 +110,6 @@ def _make_app(tmp_path, clock=None):
     """
     if clock is None:
         clock = _clock()
-    from unittest.mock import patch
     import fenris.tui as tui_mod
     from datetime import datetime as _real_datetime
 
@@ -819,19 +817,17 @@ class TestHistoricalSelectionIdentity:
                 # Move from final local hour to the second 01:00 occurrence.
                 await pilot.press(*(["left"] * 22))
                 second_occurrence = str(app.query_one("#bar-readout").render())
-                assert "01:00 -0500" in second_occurrence
+                assert "01:00 America/New_York -05:00" in second_occurrence
-                assert "America/New_York -0500" in second_occurrence
                 assert "06:00 UTC" in second_occurrence
 
                 await pilot.press("left")
                 first_occurrence = str(app.query_one("#bar-readout").render())
-                assert "01:00 -0400" in first_occurrence
+                assert "01:00 America/New_York -04:00" in first_occurrence
-                assert "America/New_York -0400" in first_occurrence
                 assert "05:00 UTC" in first_occurrence
 
                 await pilot.press("left")
                 incomplete_hour = str(app.query_one("#bar-readout").render())
-                assert "00:00 -0400" in incomplete_hour
+                assert "00:00 America/New_York -04:00" in incomplete_hour
                 assert "50% coverage · incomplete" in incomplete_hour
         finally:
             patcher.stop()

tests/test_issue_93.py

@@ -11,7 +11,6 @@ Seams:
 - Read side: query_local_day_history() returns entries with evidence flags
 - Repair: repair_derivation() does not touch existing local_days
 """
-import sqlite3
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
 from typing import Any, Dict
@@ -21,7 +20,7 @@ import sys
 
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
-from fenris.store import init_store, SCHEMA_VERSION
+from fenris.store import init_store
 from fenris.local_day import (
     derive_local_day_summary,
     persist_local_day,
@@ -29,11 +28,9 @@ from fenris.local_day import (
     query_local_day_history,
     LocalDaySummary,
     LocalDayHistoryEntry,
-    _is_detail_available,
 )
-from fenris.pruning import prune_old_samples, RAW_SAMPLE_RETENTION_DAYS
+from fenris.pruning import prune_old_samples
 from fenris.repair import repair_derivation
-from fenris.monitoring_periods import ensure_period_open, close_period
 
 
 # ---------------------------------------------------------------------------
@@ -226,7 +223,7 @@ class TestBoundaryPreservation:
         _insert_sample(conn, "2026-09-16T23:55:00+00:00", bw=100)
         _insert_sample(conn, "2026-09-17T12:30:00+00:00", bw=200)
 
-        pruned = prune_old_samples(conn, now, retention_days=14)
+        prune_old_samples(conn, now, retention_days=14)
 
         # Boundary anchor should be retained
         cursor = conn.execute(
@@ -305,7 +302,6 @@ class TestLegacyDataHandling:
     def test_incomplete_legacy_labelled_correctly(self, tmp_path):
         """Legacy summary without full evidence is labelled incomplete."""
         conn = init_store(tmp_path / "obs.db")
-        now = datetime(2026, 10, 1, 12, 0, 0, tzinfo=timezone.utc)
 
         # Simulate a legacy summary that can't establish a full local-day total
         legacy = LocalDaySummary(

tests/test_issue_97.py

@@ -12,7 +12,7 @@ from fenris import collector
 from fenris.projection import compute_projection
 from fenris.status import _query_drive_facts, get_status, read_status
 from fenris.status_composition import render_status_tui
-from fenris.store import init_store
+from fenris.store import SCHEMA_VERSION, init_store
 
 
 class FakeClock:
@@ -288,7 +288,7 @@ def test_v3_readers_ignore_pending_table_until_store_migrates(tmp_path):
 
     migrated = init_store(store_path)
     try:
-        assert migrated.execute("PRAGMA user_version").fetchone()[0] == 6
+        assert migrated.execute("PRAGMA user_version").fetchone()[0] == SCHEMA_VERSION
         assert migrated.execute("SELECT COUNT(*) FROM pending_publications").fetchone()[0] == 0
     finally:
         migrated.close()

tests/test_legacy_migration.py

@@ -4,9 +4,6 @@ Tests the idempotent, interruption-safe import of history.jsonl into the
 observation store.
 """
 import json
-import os
-import sqlite3
-import tempfile
 from datetime import datetime, timezone
 from pathlib import Path
 from typing import Any, Dict
@@ -17,7 +14,7 @@ import pytest
 import sys
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
-from fenris.legacy import import_legacy_history, is_legacy_imported, _parse_history_line
+from fenris.legacy import import_legacy_history, _parse_history_line
 from fenris.store import init_store
 
 

tests/test_live_graph.py

@@ -18,12 +18,9 @@ from fenris.activity_selection import IntervalIdentity
 from fenris.monitoring_periods import ensure_period_open
 from fenris.status import ACCURACY_SEC, CADENCE_DEFAULT_S, FRESH_THRESHOLD_S
 from fenris.store import init_store
-from fenris.tui import (
+from fenris.timefmt import local_clock, tz_label, utc_range_label
-    LIVE_WINDOW_H,
+from fenris.activity_readout import LIVE_WINDOW_H, _query_live_graph_data
-    FenrisTuiApp,
+from fenris.tui import FenrisTuiApp, LiveActivityGraph
-    LiveActivityGraph,
-    _query_live_graph_data,
-)
 
 # ---------------------------------------------------------------------------
 # Helpers
@@ -70,8 +67,10 @@ def _live_intervals(count=4):
         intervals.append({
             "start_ts": start.isoformat(),
             "end_ts": end.isoformat(),
-            "start_label": start.strftime("%H:%M"),
+            "start_label": local_clock(start, "UTC"),
-            "end_label": end.strftime("%H:%M"),
+            "end_label": local_clock(end, "UTC"),
+            "timezone_label": tz_label(end, "UTC"),
+            "utc_label": utc_range_label(start, end),
             "bytes_written": (index + 1) * 1000,
             "bytes_read": (index + 1) * 500,
             "elapsed_s": 180,
@@ -282,7 +281,7 @@ class TestLiveActivityGraph:
             await pilot.pause()
             header = str(graph.query_one("#live-header").render())
             assert "1 intervals" in header
-            assert "w W/R" in str(app.query_one("#activity-tools").render())
+            assert "w Toggle read/write" in str(app.query_one("#activity-tools").render())
 
 
 # ---------------------------------------------------------------------------

tests/test_local_day.py

@@ -624,6 +624,7 @@ class TestCollectorIntegration:
             assert summary["activity_state"] in ("incomplete", "so_far")
         conn.close()
 
+        from fenris.activity_readout import selected_local_day
         from fenris.status import read_status
         from fenris.tui import FenrisTuiApp
 
@@ -634,7 +635,9 @@ class TestCollectorIntegration:
                 Path(store), second_at, query_services=False
             ) as (reader, _):
                 assert reader is not None
-                app._render_local_day(reader)
+                app._render_local_day(*selected_local_day(
+                    reader, app._activity_selection, second_at,
+                ))
             visible = str(app.query_one("#local-day").render())
             assert "2026-09-02" in visible
             assert "Asia/Kolkata +05:30" in visible

tests/test_measured_activity.py

@@ -21,10 +21,8 @@ import sys
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
 from fenris.collector import run_collection
-from fenris.store import init_store
 from fenris.day_aggregate import derive_day
-from fenris.monitoring_periods import ensure_period_open
+from fenris.activity_readout import _query_daily_graph_data, _query_hourly_graph_data
-from fenris.tui import _query_daily_graph_data, _query_hourly_graph_data
 
 
 # ---------------------------------------------------------------------------
@@ -247,7 +245,6 @@ class TestCrossHourAttribution:
         for day in ("2026-09-01",):
             agg = derive_day(conn, day)
             assert agg is not None
-            total_accounted = agg.bytes_written_delta + agg.bytes_read_delta
             unattributed_w = conn.execute(
                 "SELECT unattributed_bytes_written FROM day_aggregates WHERE day = ?",
                 (day,)
@@ -483,7 +480,6 @@ class TestCrossDayBoundary:
 
         # The cross-day delta is unattributed at the day level
         sep1 = day_map["2026-09-01"]
-        sep2 = day_map["2026-09-02"]
         # Both days may show the unattributed bytes
         # (the delta is added to both days' unattributed totals as evidence)
         total_w = sep1["allocated_bytes"] + sep1["unallocated_bytes"]

tests/test_monitor.py

@@ -3,7 +3,6 @@
 Spec: §8.4, §8.5, §8.6, §8.7
 """
 import json
-import sqlite3
 from datetime import datetime, timezone
 from pathlib import Path
 from unittest.mock import patch, MagicMock
@@ -56,7 +55,7 @@ class TestEnableIdempotentMatrix:
         """A fresh package install has a store directory but no database yet."""
         args = MagicMock(now=False, store_path=store_path)
 
-        with patch("fenris.monitor.enable_timer") as mock_enable:
+        with patch("fenris.monitor.enable_timer"):
             cmd_enable(args)
 
         conn = init_store(store_path)
@@ -73,7 +72,7 @@ class TestEnableIdempotentMatrix:
         
         args = MagicMock(now=False, store_path=store_path)
 
-        with patch("fenris.monitor.enable_timer") as mock_enable:
+        with patch("fenris.monitor.enable_timer"):
             cmd_enable(args)
 
         # Period should be open
@@ -84,6 +83,25 @@ class TestEnableIdempotentMatrix:
         assert cursor.fetchone() is not None
         conn.close()
 
+    def test_enable_reports_period_start_in_local_time(
+        self, store_path, monkeypatch, capsys,
+    ):
+        """The opened-at message is local time with its timezone label."""
+        monkeypatch.setenv("TZ", "Asia/Kolkata")
+        args = MagicMock(now=True, store_path=store_path)
+        conn = init_store(store_path)
+        conn.execute("DELETE FROM monitoring_periods")
+        conn.commit()
+        conn.close()
+
+        with patch("fenris.monitor.enable_timer"):
+            cmd_enable(args)
+
+        out = capsys.readouterr().out
+        assert "Monitoring period opened at" in out
+        assert "Asia/Kolkata +05:30" in out
+        assert "+00:00" not in out
+
     def test_resume_with_open_period_noop(self, store_path):
         """Resume with open period: no-op (gap stays inside as unknown)."""
         # Initialize store and open a period
@@ -98,7 +116,7 @@ class TestEnableIdempotentMatrix:
 
         args = MagicMock(now=True, store_path=store_path)
 
-        with patch("fenris.monitor.enable_timer") as mock_enable:
+        with patch("fenris.monitor.enable_timer"):
             cmd_enable(args)
 
         # Should still have exactly one open period
@@ -122,7 +140,7 @@ class TestEnableIdempotentMatrix:
 
         args = MagicMock(now=True, store_path=store_path)
 
-        with patch("fenris.monitor.enable_timer") as mock_enable:
+        with patch("fenris.monitor.enable_timer"):
             cmd_enable(args)
 
         # Should have a new open period
@@ -151,7 +169,7 @@ class TestDisableIdempotentMatrix:
 
         args = MagicMock(now=True, store_path=store_path)
 
-        with patch("fenris.monitor.disable_timer") as mock_disable:
+        with patch("fenris.monitor.disable_timer"):
             cmd_disable(args)
 
         # Period should be closed with user_disabled
@@ -169,7 +187,7 @@ class TestDisableIdempotentMatrix:
 
         args = MagicMock(now=True, store_path=store_path)
 
-        with patch("fenris.monitor.disable_timer") as mock_disable:
+        with patch("fenris.monitor.disable_timer"):
             cmd_disable(args)
 
         # No periods should exist

tests/test_monitoring_periods.py

@@ -6,9 +6,8 @@ From spec §5.2, §8.6, §9.8:
 - Powered-off time stays inside a period; disabled time does not
 - End causes: user_disabled, migrated, unknown_gap
 """
-import sqlite3
 import sys
-from datetime import datetime, timezone, timedelta
+from datetime import datetime, timezone
 from pathlib import Path
 
 import pytest

tests/test_preferences.py

@@ -10,11 +10,11 @@ Covers:
   - CLI status and collector behaviour unchanged by preferences
 """
 import json
+from datetime import datetime, timezone
 import os
 from pathlib import Path
 from unittest.mock import patch
 
-import pytest
 import sys
 
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
@@ -295,7 +295,3 @@ class TestCLIIsolation:
         tables_after = sorted(r[0] for r in cursor.fetchall())
         conn.close()
         assert tables_before == tables_after
-
-
-# Need datetime for CLI isolation test
-from datetime import datetime, timezone

tests/test_projection.py

@@ -9,7 +9,6 @@ Covers acceptance criteria:
 - PR-13: Baseline provenance and validation per register
 - PR-17: Arithmetic exactly E_rated = TBW * 10^12, E_implied = 100*W/p, projected = max(E-W,0)/rate
 """
-import sqlite3
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
 
@@ -18,11 +17,10 @@ import sys
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
 from fenris.store import init_store
-from fenris.monitoring_periods import ensure_period_open, close_period
+from fenris.monitoring_periods import ensure_period_open
 from fenris.projection import (
     compute_projection, ConfidenceState, BaselineTier, ScenarioRange,
-    TBW_TO_BYTES, HORIZON_DAYS, WARMING_MIN_DAYS, STALENESS_HOURS,
+    TBW_TO_BYTES, DISCLOSURES,
-    YOUNG_REGIME_DAYS, DISCLOSURES, _compute_horizon_rate,
 )
 
 
@@ -74,12 +72,13 @@ def _insert_day(conn, day, bw=1024*1024*100, coverage=0.95, samples=24):
     conn.commit()
 
 
-def _insert_sample(conn, ts, pu=5):
+def _insert_sample(conn, ts, pu=5, bytes_written=512000000000, segment_id=1):
     conn.execute(
         "INSERT INTO samples (ts, device, data_units_written, data_units_read, "
-        "percentage_used, bytes_written, bytes_read, power_on_hours) "
+        "percentage_used, bytes_written, bytes_read, power_on_hours, segment_id) "
-        "VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+        "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)",
-        (ts, "/dev/nvme0n1", 1000000, 500000, pu, 512000000000, 256000000000, 8765),
+        (ts, "/dev/nvme0n1", bytes_written // 512000, 500000, pu, bytes_written,
+         256000000000, 8765, segment_id),
     )
     conn.commit()
 
@@ -223,6 +222,88 @@ class TestImpliedBaseline:
         result = compute_projection(store, _clock())
         assert result.baseline_tier == BaselineTier.VERIFIED
 
+    def _setup_implied(self, store, pus):
+        """No override baseline; one sample per PU value inside the segment."""
+        _insert_segment(store)
+        _open_period(store)
+        for i in range(20):
+            d = (datetime(2026, 9, 10) + timedelta(days=i)).strftime("%Y-%m-%d")
+            _insert_day(store, d, bw=1024*1024*100)
+        for i, pu in enumerate(pus):
+            _insert_sample(store, "2026-09-%02dT10:00:00+00:00" % (20 + i), pu=pu)
+        _insert_complete_local_days(store, "2026-09-29", 1)
+
+    @pytest.mark.parametrize("pus", [[5], [5, 5, 5], [5, 6]])
+    def test_implied_unavailable_before_two_increments(self, store, pus):
+        self._setup_implied(store, pus)
+        result = compute_projection(store, _clock())
+        assert result.confidence_state == ConfidenceState.UNSUPPORTED
+        assert result.baseline_tier == BaselineTier.NONE
+        assert result.headline_remaining_seconds is None
+        assert "vendor wear estimate too coarse to imply endurance" in result.contributing_facts
+
+    def test_implied_unavailable_ignores_increments_in_other_segments(self, store):
+        _insert_segment(store, opened_at="2026-09-01T00:00:00+00:00")
+        _insert_segment(store, opened_at="2026-09-15T00:00:00+00:00", identity_key="nqn.new")
+        _open_period(store)
+        for i in range(20):
+            d = (datetime(2026, 9, 10) + timedelta(days=i)).strftime("%Y-%m-%d")
+            _insert_day(store, d, bw=1024*1024*100)
+        # Two increments in the old segment, none in the current one
+        _insert_sample(store, "2026-09-02T10:00:00+00:00", pu=3, segment_id=1)
+        _insert_sample(store, "2026-09-03T10:00:00+00:00", pu=4, segment_id=1)
+        _insert_sample(store, "2026-09-20T10:00:00+00:00", pu=5, segment_id=2)
+        _insert_complete_local_days(store, "2026-09-29", 1)
+        result = compute_projection(store, _clock())
+        assert result.baseline_tier == BaselineTier.NONE
+        assert "vendor wear estimate too coarse to imply endurance" in result.contributing_facts
+
+    def test_implied_unavailable_when_pu_out_of_range(self, store):
+        self._setup_implied(store, [0, 1, 2])
+        store.execute("UPDATE samples SET percentage_used = 255 WHERE id = 3")
+        store.commit()
+        result = compute_projection(store, _clock())
+        assert result.baseline_tier == BaselineTier.NONE
+        assert "vendor wear estimate too coarse to imply endurance" in result.contributing_facts
+
+    def test_implied_eligible_after_two_increments(self, store):
+        self._setup_implied(store, [5, 6, 7])
+        W_t = 512000000000
+        result = compute_projection(store, _clock())
+        assert result.baseline_tier == BaselineTier.IMPLIED
+        # Implied baseline is never Supported-eligible
+        assert result.confidence_state == ConfidenceState.LIMITED
+        assert "vendor wear estimate too coarse to imply endurance" not in result.contributing_facts
+        E_implied = 100 * W_t / 7
+        regime_bytes = 20 * 1024 * 1024 * 100
+        regime_start = datetime(2026, 9, 10, 0, 0, 0, tzinfo=timezone.utc)
+        rate = regime_bytes / int((_clock() - regime_start).total_seconds())
+        assert abs(result.headline_remaining_seconds - max(E_implied - W_t, 0) / rate) < 1.0
+
+    def test_override_wins_over_implied(self, store):
+        _insert_baseline(store, tbw_tb=1.0, verified=True)
+        self._setup_implied(store, [5, 6, 7])
+        result = compute_projection(store, _clock())
+        assert result.baseline_tier == BaselineTier.VERIFIED
+
+
+class TestHorizonAgreement:
+    def test_single_horizon_passes_agreement(self, store):
+        """ADR 0002 §8: agreement is judged across existing horizons; one passes."""
+        _insert_baseline(store, tbw_tb=1.0, verified=True)
+        _insert_segment(store)
+        _open_period(store)
+        # 14 days covers only the 7-day horizon
+        for i in range(14):
+            d = (datetime(2026, 9, 17) + timedelta(days=i)).strftime("%Y-%m-%d")
+            _insert_day(store, d, bw=1024*1024*100)
+        _insert_sample(store, "2026-09-30T10:00:00+00:00", pu=5)
+        _insert_complete_local_days(store, "2026-09-29", 1)
+        result = compute_projection(store, _clock())
+        assert list(result.scenario_range.rates) == [7]
+        assert not any("regime only" in f for f in result.contributing_facts)
+        assert result.confidence_state == ConfidenceState.SUPPORTED
+
 
 class TestZeroRate:
     def test_zero_rate_fixed_phrase(self, store):
@@ -315,16 +396,16 @@ class TestArithmetic:
             _insert_day(store, d, bw=1024*1024*100)
         _insert_sample(store, "2026-09-30T10:00:00+00:00", pu=5)
         result = compute_projection(store, _clock())
-        if result.headline_remaining_seconds is not None:
+        E_rated = 1.0 * TBW_TO_BYTES
-            E_rated = 1.0 * TBW_TO_BYTES
+        W_t = 512000000000  # lifetime bytes written of the newest published sample
-            regime_bytes = 30 * 1024 * 1024 * 100
+        regime_bytes = 30 * 1024 * 1024 * 100
-            # Actual wall-clock: Sep 1 00:00 -> Sep 30 12:00 = 29.5 days
+        # Actual wall-clock: Sep 1 00:00 -> Sep 30 12:00 = 29.5 days
-            period_start = datetime(2026, 9, 1, 0, 0, 0, tzinfo=timezone.utc)
+        period_start = datetime(2026, 9, 1, 0, 0, 0, tzinfo=timezone.utc)
-            period_end = _clock()
+        actual_wc = int((_clock() - period_start).total_seconds())
-            actual_wc = int((period_end - period_start).total_seconds())
+        rate = regime_bytes / actual_wc
-            rate = regime_bytes / actual_wc
+        expected = max(E_rated - W_t, 0) / rate
-            expected = max(E_rated - regime_bytes, 0) / rate
+        assert result.headline_remaining_seconds is not None
-            assert abs(result.headline_remaining_seconds - expected) < 1.0
+        assert abs(result.headline_remaining_seconds - expected) < 1.0
 
     def test_implied_baseline_formula(self, store):
         W_t = 1024 * 1024 * 1000
@@ -339,17 +420,19 @@ class TestArithmetic:
         for i in range(30):
             d = (datetime(2026, 9, 1) + timedelta(days=i)).strftime("%Y-%m-%d")
             _insert_day(store, d, bw=1024*1024*100)
-        _insert_sample(store, "2026-09-30T10:00:00+00:00", pu=5)
+        W_t = 512000000000  # lifetime written bytes of the newest sample
+        _insert_sample(store, "2026-09-30T10:00:00+00:00", pu=5, bytes_written=W_t)
+        _insert_complete_local_days(store, "2026-09-29", 1)
         result = compute_projection(store, _clock())
-        if result.headline_remaining_seconds is not None:
+        assert result.headline_remaining_seconds is not None
-            E_rated = 2.0 * TBW_TO_BYTES
+        E_rated = 2.0 * TBW_TO_BYTES
-            regime_bytes = 30 * 1024 * 1024 * 100
+        regime_bytes = 30 * 1024 * 1024 * 100
-            period_start = datetime(2026, 9, 1, 0, 0, 0, tzinfo=timezone.utc)
+        period_start = datetime(2026, 9, 1, 0, 0, 0, tzinfo=timezone.utc)
-            period_end = _clock()
+        actual_wc = int((_clock() - period_start).total_seconds())
-            actual_wc = int((period_end - period_start).total_seconds())
+        rate = regime_bytes / actual_wc
-            rate = regime_bytes / actual_wc
+        # W_t is lifetime written bytes, not the regime delta
-            expected = max(E_rated - regime_bytes, 0) / rate
+        expected = max(E_rated - W_t, 0) / rate
-            assert abs(result.headline_remaining_seconds - expected) < 1.0
+        assert abs(result.headline_remaining_seconds - expected) < 1.0
 
     def test_wearing_rate_proportional(self, store):
         _insert_baseline(store, tbw_tb=1.0, verified=True)
@@ -359,6 +442,7 @@ class TestArithmetic:
             d = (datetime(2026, 9, 1) + timedelta(days=i)).strftime("%Y-%m-%d")
             _insert_day(store, d, bw=1024*1024*100)
         _insert_sample(store, "2026-09-30T10:00:00+00:00", pu=5)
+        _insert_complete_local_days(store, "2026-09-29", 1)
         r_slow = compute_projection(store, _clock())
 
         store.execute("DELETE FROM day_aggregates")
@@ -368,9 +452,9 @@ class TestArithmetic:
             _insert_day(store, d, bw=2*1024*1024*100)
         r_fast = compute_projection(store, _clock())
 
-        if r_slow.headline_remaining_seconds is not None and r_fast.headline_remaining_seconds is not None:
+        assert r_slow.headline_remaining_seconds is not None
-            assert r_fast.headline_remaining_seconds < r_slow.headline_remaining_seconds
+        assert r_fast.headline_remaining_seconds is not None
-
+        assert r_fast.headline_remaining_seconds < r_slow.headline_remaining_seconds
 
 
 # ===========================================================================
@@ -394,17 +478,19 @@ class TestSustainedRegimeRate:
         for i in range(30):
             d = (datetime(2026, 9, 1) + timedelta(days=i)).strftime("%Y-%m-%d")
             _insert_day(store, d, bw=bw)
-        _insert_sample(store, "2026-09-30T10:00:00+00:00", pu=5)
+        W_t = 512000000000
+        _insert_sample(store, "2026-09-30T10:00:00+00:00", pu=5, bytes_written=W_t)
+        _insert_complete_local_days(store, "2026-09-29", 1)
         result = compute_projection(store, _clock())
         # Regime = full 30 days; rate = 30*bw / wall-clock
         regime_bytes = 30 * bw
         period_start = datetime(2026, 9, 1, 0, 0, 0, tzinfo=timezone.utc)
         wc = int((_clock() - period_start).total_seconds())
         expected_rate = regime_bytes / wc
-        if result.headline_remaining_seconds is not None:
+        assert result.headline_remaining_seconds is not None
-            E = 10.0 * TBW_TO_BYTES
+        E = 10.0 * TBW_TO_BYTES
-            expected_seconds = max(E - regime_bytes, 0) / expected_rate
+        expected_seconds = max(E - W_t, 0) / expected_rate
-            assert abs(result.headline_remaining_seconds - expected_seconds) < 1.0
+        assert abs(result.headline_remaining_seconds - expected_seconds) < 1.0
 
     def test_regime_capped_at_90_days(self, store):
         """Default regime is full history capped at 90 days."""
@@ -1039,8 +1125,6 @@ class TestEvidenceAnchoredHorizons:
             # cumulative_bytes = 30 * 100 * 1024 * 1024
             # rate = cumulative_bytes / wall_clock
             # headline = (E_baseline - cumulative_bytes) / rate
-            E_baseline = 10.0 * TBW_TO_BYTES
-            cumulative_bytes = 30 * bw
             assert result.headline_remaining_seconds >= 0
 
     def test_zero_boundary_delta_returns_zero(self, store):

tests/test_pruning.py

@@ -5,7 +5,6 @@ day aggregates are retained indefinitely.
 
 Issue #74: Boundary anchors required for successor evidence are retained.
 """
-import sqlite3
 import sys
 from datetime import datetime, timezone, timedelta
 from pathlib import Path
@@ -124,7 +123,7 @@ class TestPruneOldSamples:
         _insert_sample(store_conn, "2026-09-16T12:30:00+00:00", 2000000)
         
         # Run pruning
-        pruned = prune_old_samples(store_conn, now, retention_days=14)
+        prune_old_samples(store_conn, now, retention_days=14)
         
         # The boundary anchor should be retained
         cursor = store_conn.execute(
@@ -148,7 +147,7 @@ class TestPruneOldSamples:
         store_conn.commit()
         
         # Run pruning
-        pruned = prune_old_samples(store_conn, now, retention_days=14)
+        prune_old_samples(store_conn, now, retention_days=14)
         
         # Keep the source samples until local-day replacement evidence exists.
         cursor = store_conn.execute(

tests/test_release.py

@@ -58,7 +58,7 @@ def _rpm_filename(version: str, release: int = 1) -> str:
 
 def _registry_upload_deb_url(version: str) -> str:
     """Expected registry upload URL for a deb package."""
-    return f"debian/pool/bookworm/main/upload"
+    return "debian/pool/bookworm/main/upload"
 
 
 def _registry_upload_rpm_url() -> str:
@@ -258,8 +258,6 @@ class TestRevisionBumping:
         """When revision is bumped, the deb filename also changes."""
         version = _get_version()
         # Deb filename includes release in nfpm naming
-        deb_r1 = f"fenris_{version}_amd64.deb"
-        deb_r2 = f"fenris_{version}_amd64.deb"
         # For deb, the filename doesn't change with revision (deb uses epoch)
         # But the RPM does — this verifies we test RPM revision correctly
         rpm_r1 = _rpm_filename(version, 1)

tests/test_repair.py

@@ -4,9 +4,8 @@ Tests the idempotent, safe repair of hour observations and day aggregates
 from surviving raw samples, boundary anchor retention, and legacy summary
 handling at actual precision.
 """
-import sqlite3
 import sys
-from datetime import datetime, timedelta, timezone
+from datetime import datetime, timezone
 from pathlib import Path
 
 import pytest
@@ -102,7 +101,6 @@ class TestRepairUsesSameEvidenceRules:
 
     def test_repair_idempotent_on_fully_derived(self, store_conn):
         """Repair on store with existing derived data does not duplicate."""
-        now = datetime(2026, 9, 15, 12, 0, 0, tzinfo=timezone.utc)
         _open_period(store_conn, "2026-09-14T00:00:00+00:00")
         
         # Insert samples that span an hour
@@ -138,7 +136,7 @@ class TestRepairUsesSameEvidenceRules:
         store_conn.commit()
         
         # Run repair
-        result = repair_derivation(store_conn)
+        repair_derivation(store_conn)
         
         # Verify marker preserved
         cursor = store_conn.execute(
@@ -265,7 +263,7 @@ class TestBoundaryAnchorRetention:
         _insert_sample(store_conn, "2026-09-29T12:00:00+00:00", 3000000)
         
         # Run pruning
-        pruned = prune_old_samples(store_conn, now, retention_days=14)
+        prune_old_samples(store_conn, now, retention_days=14)
         
         # The boundary anchor should be retained
         cursor = store_conn.execute(
@@ -286,7 +284,7 @@ class TestBoundaryAnchorRetention:
                      bytes_written_delta=1000000)
         
         # Run pruning
-        pruned = prune_old_samples(store_conn, now, retention_days=14)
+        prune_old_samples(store_conn, now, retention_days=14)
         
         # The source remains until local-day evidence is also durable.
         cursor = store_conn.execute(
@@ -309,7 +307,7 @@ class TestLegacySummaryPrecision:
                              bytes_written_delta=5000000)
         
         # Run repair
-        result = repair_derivation(store_conn)
+        repair_derivation(store_conn)
         
         # Should not create hour observations for legacy day
         cursor = store_conn.execute(
@@ -324,7 +322,7 @@ class TestLegacySummaryPrecision:
                              bytes_written_delta=5000000)
         
         # Run repair
-        result = repair_derivation(store_conn)
+        repair_derivation(store_conn)
         
         # Day aggregate should not be modified
         cursor = store_conn.execute(

tests/test_signing.py

@@ -259,8 +259,8 @@ class TestKeyCeremonyDoc:
 
     def test_documents_private_key_storage(self):
         content = self._doc_content()
-        assert "password manager" in content.lower(), \
+        assert "gitea repository actions secret `gpg_private_key`" in content.lower(), \
-            "Must document that private key lives in password manager"
+            "Must document that Gitea Actions stores the private signing key"
 
 
 # ---------------------------------------------------------------------------

tests/test_staged_projection.py

@@ -0,0 +1,221 @@
+"""Staged projection with an evidence ladder (issue #106, ADR 0012).
+
+Every gate is exercised through compute_projection() against SQLite
+fixtures built by seed_evidence(): N hours or days of complete evidence
+written as hour observations, then derived into day aggregates the same
+way a collection run does.
+"""
+import sys
+from datetime import datetime, timedelta, timezone
+from pathlib import Path
+
+import pytest
+
+sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
+
+from fenris.day_aggregate import derive_all_days, persist_day_aggregate
+from fenris.monitoring_periods import ensure_period_open
+from fenris.projection import (
+    BaselineTier, ConfidenceState, ProjectionStage, compute_projection,
+)
+from fenris.store import init_store
+
+START = datetime(2026, 9, 1, 0, 0, 0, tzinfo=timezone.utc)
+HOUR_BYTES = 10 * 1024 ** 3
+MODEL = "Samsung SSD 970 EVO Plus 1TB"
+
+
+@pytest.fixture
+def store(tmp_path):
+    conn = init_store(tmp_path / "test.db")
+    yield conn
+    conn.close()
+
+
+def seed_evidence(conn, hours, baseline="verified", start=START, degraded=False):
+    """Seed *hours* hours of complete evidence and return the clock.
+
+    Monitoring opens at *start*; each hour is fully sampled and active.
+    The returned clock is the end of the last observed hour.
+    """
+    conn.execute(
+        "INSERT INTO controller_segments "
+        "(opened_at, identity_key, identity_degraded, subnqn, sn, mn, fr, vid, ssvid, transport) "
+        "VALUES (?, ?, ?, 'nqn.test', 'SN1', ?, 'FW1', '0x144d', '0x144d', 'pcie')",
+        (start.isoformat(), "" if degraded else "nqn.test", degraded, MODEL),
+    )
+    if baseline:
+        conn.execute(
+            "INSERT INTO endurance_baseline "
+            "(tbw_terabytes, source_url, document_revision, entry_date, model_string, "
+            " nominal_capacity_bytes, validated_by, verified, created_at, updated_at) "
+            "VALUES (600, ?, 'v1', '2026-01-01', ?, 1024000000000, ?, ?, "
+            "        '2026-01-01T00:00:00+00:00', '2026-01-01T00:00:00+00:00')",
+            ("https://example.com/spec" if baseline == "verified" else None, MODEL,
+             "machine_match" if baseline == "verified" else None,
+             baseline == "verified"),
+        )
+    ensure_period_open(conn, start)
+    for h in range(hours):
+        hour = start + timedelta(hours=h)
+        conn.execute(
+            "INSERT INTO hour_observations "
+            "(hour, active_seconds, idle_seconds, powered_off_seconds, unknown_seconds, "
+            " bytes_written_delta, bytes_read_delta, sample_count, coverage) "
+            "VALUES (?, 3600, 0, 0, 0, ?, 0, 1, 1.0)",
+            (hour.strftime("%Y-%m-%dT%H:00:00Z"), HOUR_BYTES),
+        )
+        written = HOUR_BYTES * (h + 1)
+        conn.execute(
+            "INSERT INTO samples (ts, device, data_units_written, data_units_read, "
+            "percentage_used, bytes_written, bytes_read, power_on_hours, segment_id) "
+            "VALUES (?, '/dev/nvme0n1', ?, 0, 1, ?, 0, 100, 1)",
+            ((hour + timedelta(hours=1)).isoformat(), written // 512000, written),
+        )
+    for aggregate in derive_all_days(conn):
+        persist_day_aggregate(conn, aggregate)
+    conn.commit()
+    return start + timedelta(hours=hours)
+
+
+class TestHourStages:
+    def test_empty_store_has_no_observations(self, store):
+        result = compute_projection(store, START)
+        assert result.stage == ProjectionStage.NO_OBSERVATIONS
+        assert result.headline_remaining_seconds is None
+
+    def test_two_hours_is_too_few_for_a_number(self, store):
+        clock = seed_evidence(store, 2)
+        result = compute_projection(store, clock)
+        assert result.stage == ProjectionStage.NO_OBSERVATIONS
+        assert result.headline_remaining_seconds is None
+        assert result.hours_observed == 2
+
+    def test_three_hours_is_provisional_with_a_number(self, store):
+        clock = seed_evidence(store, 3)
+        result = compute_projection(store, clock)
+        assert result.stage == ProjectionStage.PROVISIONAL
+        assert result.headline_remaining_seconds is not None
+        assert result.headline_remaining_seconds > 0
+        assert result.hours_observed == 3
+        assert "3 hours observed" in result.contributing_facts
+        assert "daily cycle not yet seen" in result.contributing_facts
+
+    def test_three_hours_shows_short_horizon_spread(self, store):
+        clock = seed_evidence(store, 3)
+        result = compute_projection(store, clock)
+        assert result.scenario_range is not None
+        assert set(result.scenario_range.rates) <= {1, 3}
+        assert 1 in result.scenario_range.rates
+
+    def test_provisional_rate_is_the_observed_write_rate(self, store):
+        clock = seed_evidence(store, 3)
+        result = compute_projection(store, clock)
+        assert result.write_rate == pytest.approx(HOUR_BYTES / 3600, rel=0.01)
+
+    def test_complete_local_day_is_a_fact_not_a_gate(self, store):
+        clock = seed_evidence(store, 3)
+        result = compute_projection(store, clock)
+        assert result.headline_remaining_seconds is not None
+        assert "waiting for a full local observation day" in result.contributing_facts
+
+    def test_provisional_until_24_hours_then_warming(self, store):
+        clock = seed_evidence(store, 23)
+        assert compute_projection(store, clock).stage == ProjectionStage.PROVISIONAL
+
+    def test_twenty_four_hours_is_warming(self, store):
+        clock = seed_evidence(store, 24)
+        result = compute_projection(store, clock)
+        assert result.stage == ProjectionStage.WARMING
+        assert "daily cycle not yet seen" not in result.contributing_facts
+
+
+class TestDayStages:
+    def test_warming_until_fourteen_qualifying_days(self, store):
+        clock = seed_evidence(store, 24 * 13)
+        assert compute_projection(store, clock).stage == ProjectionStage.WARMING
+
+    def test_fourteen_days_with_verified_baseline_is_supported(self, store):
+        clock = seed_evidence(store, 24 * 14)
+        result = compute_projection(store, clock)
+        assert result.stage == ProjectionStage.SUPPORTED
+        assert result.confidence_state == ConfidenceState.SUPPORTED
+
+    def test_unverified_baseline_is_limited_after_warm_up(self, store):
+        clock = seed_evidence(store, 24 * 14, baseline="unverified")
+        result = compute_projection(store, clock)
+        assert result.stage == ProjectionStage.LIMITED
+        assert result.baseline_tier == BaselineTier.UNVERIFIED
+
+    def test_degraded_identity_is_limited(self, store):
+        clock = seed_evidence(store, 24 * 14, degraded=True)
+        assert compute_projection(store, clock).stage == ProjectionStage.LIMITED
+
+    def test_stale_history_is_limited(self, store):
+        clock = seed_evidence(store, 24 * 14) + timedelta(days=4)
+        assert compute_projection(store, clock).stage == ProjectionStage.LIMITED
+
+
+class TestNoBaseline:
+    def test_write_rate_replaces_lifespan(self, store):
+        clock = seed_evidence(store, 3, baseline=None)
+        result = compute_projection(store, clock)
+        assert result.stage == ProjectionStage.UNAVAILABLE
+        assert result.headline_remaining_seconds is None
+        assert result.write_rate == pytest.approx(HOUR_BYTES / 3600, rel=0.01)
+
+    def test_no_baseline_is_not_synthesised(self, store):
+        clock = seed_evidence(store, 24 * 14, baseline=None)
+        result = compute_projection(store, clock)
+        assert result.baseline_tier == BaselineTier.NONE
+        assert result.headline_remaining_seconds is None
+        assert result.write_rate is not None
+
+
+class TestShortHorizons:
+    def test_short_horizons_appear_once_covered(self, store):
+        clock = seed_evidence(store, 24 * 2)
+        rates = compute_projection(store, clock).scenario_range.rates
+        assert 1 in rates
+        assert 3 not in rates
+
+    def test_three_day_horizon_covered_at_four_days(self, store):
+        clock = seed_evidence(store, 24 * 4)
+        rates = compute_projection(store, clock).scenario_range.rates
+        assert {1, 3} <= set(rates)
+
+    def test_short_horizons_drop_when_seven_day_covered(self, store):
+        clock = seed_evidence(store, 24 * 9)
+        rates = compute_projection(store, clock).scenario_range.rates
+        assert 7 in rates
+        assert 1 not in rates and 3 not in rates
+
+
+class TestEvidenceLadder:
+    def test_ladder_lists_each_supported_condition_with_reason(self, store):
+        clock = seed_evidence(store, 3)
+        ladder = compute_projection(store, clock).evidence_ladder
+        assert len(ladder) == 8
+        assert all(c.reason for c in ladder)
+        assert all(isinstance(c.met, bool) for c in ladder)
+
+    def test_ladder_all_met_when_supported(self, store):
+        clock = seed_evidence(store, 24 * 14)
+        result = compute_projection(store, clock)
+        assert result.ladder_met == result.ladder_total == 8
+
+    def test_ladder_count_rises_as_evidence_accrues(self, store, tmp_path):
+        counts = []
+        for hours in (3, 24 * 2, 24 * 9, 24 * 14):
+            conn = init_store(tmp_path / ("ladder-%d.db" % hours))
+            clock = seed_evidence(conn, hours)
+            counts.append(compute_projection(conn, clock).ladder_met)
+            conn.close()
+        assert counts == sorted(counts)
+        assert counts[0] < counts[-1]
+        assert len(set(counts)) >= 3
+
+    def test_unmet_condition_names_its_reason(self, store):
+        clock = seed_evidence(store, 3)
+        unmet = [c for c in compute_projection(store, clock).evidence_ladder if not c.met]
+        assert any("qualifying days" in c.reason for c in unmet)

tests/test_staged_projection_callers.py

@@ -0,0 +1,112 @@
+"""CLI and TUI render the projection stage, never pre-gate it (issue #106).
+
+Seams: get_status() and the TUI headline band.  Both must show what
+compute_projection() reports: the stage, the ladder count, and the full
+ladder in the outlook; no caller decides what the projection can show.
+"""
+import sys
+from datetime import datetime, timedelta, timezone
+from pathlib import Path
+from unittest.mock import patch
+
+import pytest
+
+sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
+sys.path.insert(0, str(Path(__file__).parent))
+
+from fenris.status import get_status
+from fenris.store import init_store
+from fenris.tui import FenrisTuiApp
+from test_staged_projection import seed_evidence
+
+SERVICES = {
+    "boot_enabled": False, "timer_active": False,
+    "last_collect_ok": None, "last_collect_age_s": None,
+    "last_collect_reason": None,
+}
+
+
+def _status(db, clock):
+    with patch("fenris.status.query_service_state", return_value=SERVICES):
+        return get_status(store_path=db, clock_now=clock,
+                          query_services=False, query_journal=False)
+
+
+@pytest.fixture
+def db(tmp_path):
+    return tmp_path / "observations.db"
+
+
+class TestCliStatus:
+    def test_provisional_stage_ladder_count_and_full_ladder(self, db):
+        conn = init_store(db)
+        clock = seed_evidence(conn, 3)
+        conn.close()
+        out = _status(db, clock)
+        assert "Provisional" in out
+        assert "3 hours observed" in out
+        assert "daily cycle not yet seen" in out
+        assert "remaining" in out
+        assert "conditions met" in out
+        assert "Evidence ladder" in out
+        assert "[ ] 14 qualifying days" in out
+        assert "[x] verified baseline" in out
+
+    def test_single_sample_is_not_pre_gated(self, db):
+        conn = init_store(db)
+        seed_evidence(conn, 1)
+        conn.close()
+        out = _status(db, datetime(2026, 9, 1, 1, 0, tzinfo=timezone.utc))
+        assert "requires at least two samples" not in out
+        assert "1 of 3 hours observed" in out
+
+    def test_no_baseline_shows_write_rate_not_lifespan(self, db):
+        conn = init_store(db)
+        clock = seed_evidence(conn, 3, baseline=None)
+        conn.close()
+        out = _status(db, clock)
+        assert "write rate" in out.lower()
+        assert "GB/day" in out
+
+    def test_supported_stage(self, db):
+        conn = init_store(db)
+        clock = seed_evidence(conn, 24 * 14)
+        conn.close()
+        out = _status(db, clock)
+        assert "Supported" in out
+        assert "8 of 8 conditions met" in out
+
+
+class TestTuiHeadline:
+    @pytest.mark.asyncio
+    async def test_provisional_headline_and_ladder(self, db):
+        now = datetime.now(timezone.utc).replace(minute=0, second=0, microsecond=0)
+        conn = init_store(db)
+        seed_evidence(conn, 3, start=now - timedelta(hours=3))
+        conn.close()
+        with patch("fenris.status.query_service_state", return_value=SERVICES):
+            app = FenrisTuiApp(store_path=db)
+            async with app.run_test(size=(120, 50)):
+                text = str(app.query_one("#headline-band").render())
+        assert "Provisional" in text
+        assert "3 hours observed" in text
+        assert "conditions met" in text
+        assert "Evidence ladder" in text
+
+    @pytest.mark.asyncio
+    async def test_single_sample_is_not_pre_gated(self, db):
+        now = datetime.now(timezone.utc).replace(minute=0, second=0, microsecond=0)
+        conn = init_store(db)
+        seed_evidence(conn, 1, start=now - timedelta(hours=1))
+        conn.close()
+        with patch("fenris.status.query_service_state", return_value=SERVICES):
+            app = FenrisTuiApp(store_path=db)
+            async with app.run_test(size=(120, 50)):
+                text = str(app.query_one("#headline-band").render())
+        assert "at least two samples" not in text
+
+
+def test_callers_carry_no_projection_pre_gate():
+    root = Path(__file__).parent.parent / "src" / "fenris"
+    for name in ("tui.py", "status.py"):
+        assert "at least two samples" not in (root / name).read_text()

tests/test_status.py

@@ -11,13 +11,11 @@ Covers:
   - Retired command rejection with migration pointers
   - Configuration error surfaced from direct reads
 """
-import os
 import sqlite3
 import sys
-import tempfile
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
-from unittest.mock import patch, MagicMock
+from unittest.mock import patch
 
 import pytest
 
@@ -25,7 +23,6 @@ sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
 from fenris.status import (
     grade_freshness,
-    freshness_age_human,
     format_disclosures,
     check_retired_command,
     check_retired_flag,
@@ -35,7 +32,8 @@ from fenris.status import (
     ACCURACY_SEC,
 )
 from fenris.store import init_store, SCHEMA_VERSION
-from fenris.projection import DISCLOSURES, ConfidenceState
+from fenris.projection import DISCLOSURES
+from fenris.timefmt import freshness_age_human
 
 
 # ---------------------------------------------------------------------------

tests/test_status_composition.py

@@ -10,10 +10,9 @@ Covers:
   - AC78-5: Separate freshness, last outcome, boot enablement, activity facts
   - AC78-6: 5s poll reevaluates freshness from cached clock
 """
-import sqlite3
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
-from unittest.mock import patch, MagicMock
+from unittest.mock import patch
 
 import pytest
 import sys
@@ -23,12 +22,9 @@ sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 from fenris.store import init_store
 from fenris.status_composition import (
     StatusState,
-    StatusComposition,
     compose_status,
     render_status_cli,
     render_status_tui,
-    FRESH_THRESHOLD_S,
-    STALENESS_THRESHOLD_S,
 )
 
 
@@ -682,7 +678,6 @@ class TestStoreFaultSuppression:
         conn.close()
 
     def test_newer_schema_suppresses_projection(self, tmp_path):
-        import fenris.store as store_mod
         conn = init_store(tmp_path / "test.db")
         now = _clock()
 
@@ -957,8 +952,7 @@ class TestTUIIntegration:
         conn = init_store(tmp_path / "test.db")
         _insert_segment(conn)
         _open_period(conn)
-        now = _clock()
+        ts = (datetime.now(timezone.utc) - timedelta(minutes=2)).isoformat()
-        ts = (now - timedelta(minutes=2)).isoformat()
         _insert_sample(conn, ts)
         for i in range(20):
             d = (datetime(2026, 9, 10) + timedelta(days=i)).strftime("%Y-%m-%d")
@@ -971,7 +965,7 @@ class TestTUIIntegration:
             "last_collect_ok": True, "last_collect_age_s": 120,
             "last_collect_reason": None,
         }):
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 strip = str(app.query_one("#service-strip").render())
                 assert "●" in strip
                 assert "Monitoring" in strip or "monitoring" in strip.lower()
@@ -997,7 +991,7 @@ class TestTUIIntegration:
             "last_collect_ok": None, "last_collect_age_s": None,
             "last_collect_reason": None,
         }):
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 strip = str(app.query_one("#service-strip").render())
                 # Should show Paused state
                 assert "‖" in strip or "Paused" in strip or "paused" in strip.lower()
@@ -1024,7 +1018,7 @@ class TestTUIIntegration:
             "last_collect_ok": False, "last_collect_age_s": 60,
             "last_collect_reason": "exit code 3",
         }):
-            async with app.run_test() as pilot:
+            async with app.run_test():
                 strip = str(app.query_one("#service-strip").render())
                 # Should show Error state
                 assert "✖" in strip or "Error" in strip or "error" in strip.lower()

tests/test_store_group_access.py

@@ -6,7 +6,6 @@ instead of degrading to the Store fault view; (2) even group members could
 not open the WAL-mode store because root-created sidecars lacked group write
 and the store directory lacked group execute-then-write.
 """
-import sqlite3
 import sys
 from pathlib import Path
 
@@ -14,7 +13,7 @@ import pytest
 
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
-from fenris.store import DEFAULT_STORE_PATH, init_store
+from fenris.store import init_store
 from fenris.status import StoreFault, open_store_readonly
 
 

tests/test_themes.py

@@ -7,7 +7,6 @@ Covers:
   - Status semantic colours/glyphs/text always win over theme
   - Global action reachability and focus contrast in every preset
 """
-import pytest
 import sys
 from pathlib import Path
 

tests/test_tui.py

@@ -13,39 +13,33 @@ import sqlite3
 from xml.etree import ElementTree
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
-from unittest.mock import patch, MagicMock
+from unittest.mock import patch
 
 import pytest
 import sys
 
 sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
 
-from textual.app import App
-from textual.pilot import Pilot
 
-from fenris.store import init_store, SCHEMA_VERSION
+from fenris.store import init_store
-from fenris.monitoring_periods import ensure_period_open, close_period
+from fenris.monitoring_periods import ensure_period_open
 from fenris.projection import (
     ConfidenceState,
     compute_projection,
-    DISCLOSURES,
-    WARMING_MIN_DAYS,
-    STALENESS_HOURS,
-    YOUNG_REGIME_DAYS,
 )
 from fenris.status import (
     FRESH_THRESHOLD_S,
-    STALENESS_THRESHOLD_S,
     grade_freshness,
 )
+from fenris.activity_readout import (
+    _query_daily_graph_data,
+    _query_drive_health,
+    _query_hourly_graph_data,
+)
 from fenris.tui import (
     FenrisTuiApp,
     HistoryGraph,
     _format_remaining,
-    _query_drive_health,
-    _query_daily_graph_data,
-    _query_hourly_graph_data,
-    _RANGE_OPTIONS,
     _RANGE_DEFAULT,
     _MIN_WIDTH,
     _MIN_HEIGHT,
@@ -60,6 +54,13 @@ def _clock(year=2026, month=9, day=30, hour=12):
     return datetime(year, month, day, hour, 0, 0, tzinfo=timezone.utc)
 
 
+class _FrozenTuiDateTime(datetime):
+    @classmethod
+    def now(cls, tz=None):
+        instant = datetime(2026, 9, 28, 12, 0, 0, tzinfo=timezone.utc)
+        return instant.replace(tzinfo=None) if tz is None else instant.astimezone(tz)
+
+
 def _insert_baseline(conn, tbw_tb=1.0, verified=True,
                       model="Samsung SSD 970 EVO Plus 1TB"):
     conn.execute(
@@ -100,8 +101,8 @@ def _insert_day(conn, day, bw=1024*1024*100, coverage=0.95, samples=24):
 def _insert_sample(conn, ts, pu=5, device="/dev/nvme0n1"):
     conn.execute(
         "INSERT INTO samples (ts, device, data_units_written, data_units_read, "
-        "percentage_used, bytes_written, bytes_read, power_on_hours) "
+        "percentage_used, bytes_written, bytes_read, power_on_hours, segment_id) "
-        "VALUES (?, ?, ?, ?, ?, ?, ?, ?)",
+        "VALUES (?, ?, ?, ?, ?, ?, ?, ?, 1)",
         (ts, device, 1000000, 500000, pu, 512000000000, 256000000000, 8765),
     )
     conn.commit()
@@ -276,7 +277,7 @@ class TestDenseScreen:
         conn.close()
 
         app = FenrisTuiApp(store_path=tmp_path / "test.db")
-        async with app.run_test() as pilot:
+        async with app.run_test():
             assert app.query_one("#headline-band") is not None
             assert app.query_one("#usage-history") is not None
             assert app.query_one("#drive-health") is not None
@@ -296,7 +297,7 @@ class TestDenseScreen:
         conn.close()
 
         app = FenrisTuiApp(store_path=tmp_path / "test.db")
-        async with app.run_test() as pilot:
+        async with app.run_test():
             headline = str(app.query_one("#headline-band").render())
             assert "remaining" in headline.lower() or "projection" in headline.lower()
 
@@ -314,7 +315,7 @@ class TestDenseScreen:
         conn.close()
 
         app = FenrisTuiApp(store_path=tmp_path / "test.db")
-        async with app.run_test() as pilot:
+        async with app.run_test():
             headline = str(app.query_one("#headline-band").render())
             assert "projection confidence" in headline.lower()
             # Contributing facts shown, never a percentage as confidence
@@ -336,7 +337,7 @@ class TestDenseScreen:
         conn.close()
 
         app = FenrisTuiApp(store_path=tmp_path / "test.db")
-        async with app.run_test() as pilot:
+        async with app.run_test():
             strip = str(app.query_one("#service-strip").render())
             assert "Boot:" in strip
             assert "Timer:" in strip
@@ -477,7 +478,6 @@ class TestDenseScreen:
         auth_notice = "Open with fenris (no sudo). Actions authenticate via polkit. ? Help"
 
         async with app.run_test() as pilot:
-            headline = str(app.query_one("#headline-band").render())
             # Identity now shows Fenris by Bongbetic (issue #79)
             assert "Fenris by Bongbetic" in str(app.query_one("#identity").render())
             assert auth_notice in str(app.query_one("#auth-notice").render())
@@ -519,7 +519,7 @@ class TestDisclosuresAndGreeting:
     async def test_empty_store_greeting(self, tmp_path):
         """Empty store shows 'no observations yet' with enable hint."""
         app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-        async with app.run_test() as pilot:
+        async with app.run_test():
             headline = str(app.query_one("#headline-band").render())
             assert "no observations yet" in headline.lower()
             assert "enable" in headline.lower() or "resume" in headline.lower()
@@ -584,9 +584,8 @@ class TestFirstRun:
     async def test_first_run_prompt(self, tmp_path):
         """First-run prompt makes the keyboard action and boot effect explicit."""
         app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
-        async with app.run_test() as pilot:
+        async with app.run_test():
             headline = str(app.query_one("#headline-band").render())
-            strip = str(app.query_one("#service-strip").render())
             assert "no observations yet" in headline.lower()
             assert "r resume — enable monitoring and future boots" in headline.lower()
             assert "r resume" in str(app.query_one("#action-rail").render()).lower()
@@ -859,7 +858,6 @@ class TestQueryHourlyGraphData:
 class TestHistoryGraph:
     def test_empty_data(self, tmp_path):
         """Empty data shows awaiting message."""
-        app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
         # We test the widget directly via the app's compose
         graph = HistoryGraph()
         # Simulate setting empty data
@@ -1022,7 +1020,7 @@ class TestBarGraphTUI:
             assert len(graph._day_data) == 90
 
     @pytest.mark.asyncio
-    async def test_readout_updates_on_selection(self, tmp_path):
+    async def test_readout_updates_on_selection(self, tmp_path, monkeypatch):
         """Readout shows selected day info."""
         conn = init_store(tmp_path / "test.db")
         _insert_segment(conn)
@@ -1034,6 +1032,7 @@ class TestBarGraphTUI:
         _insert_sample(conn, "2026-09-30T10:00:00+00:00")
         conn.close()
 
+        monkeypatch.setattr("fenris.tui.datetime", _FrozenTuiDateTime)
         app = FenrisTuiApp(store_path=tmp_path / "test.db")
         async with app.run_test(size=(80, 24)) as pilot:
             await pilot.press("v", "v")
@@ -1056,7 +1055,7 @@ class TestBarGraphTUI:
             assert "W 0.105 GB known" in readout
 
     @pytest.mark.asyncio
-    async def test_hourly_drill_down_and_back(self, tmp_path):
+    async def test_hourly_drill_down_and_back(self, tmp_path, monkeypatch):
         """Enter drills into hourly view, Esc returns to daily."""
         conn = init_store(tmp_path / "test.db")
         _insert_segment(conn)
@@ -1073,6 +1072,7 @@ class TestBarGraphTUI:
         _insert_sample(conn, "2026-09-30T10:00:00+00:00")
         conn.close()
 
+        monkeypatch.setattr("fenris.tui.datetime", _FrozenTuiDateTime)
         app = FenrisTuiApp(store_path=tmp_path / "test.db")
         async with app.run_test(size=(80, 24)) as pilot:
             await pilot.press("v", "v")
@@ -1120,7 +1120,6 @@ class TestBarGraphTUI:
         app = FenrisTuiApp(store_path=tmp_path / "nonexistent.db")
         async with app.run_test(size=(80, 24)) as pilot:
             await pilot.press("v", "v")
-            graph = app.query_one("#usage-history")
             assert app.query_one("#activity-panel").border_title == "Drive activity"
 
     @pytest.mark.asyncio
@@ -1346,15 +1345,9 @@ class TestConstrainedLayout:
             headline = str(app.query_one("#headline-band").render())
             assert "remaining" in headline.lower() or "projection" in headline.lower()
 
-            # Service strip should have actions
+            # Under 80x24 the footer collapses to help and quit (issue #110)
-            strip = str(app.query_one("#action-rail").render())
-            assert "p Pause" in strip
-            assert "r Resume" in strip
-            assert "q Quit TUI" in strip
-
-            # Quit rail should be visible
             rail = str(app.query_one("#action-rail").render())
-            assert "Quit" in rail
+            assert rail == "? help · q quit"
 
     @pytest.mark.asyncio
     async def test_constrained_long_reasons_visible(self, tmp_path):

tests/test_tui_baseline_entry.py

@@ -0,0 +1,214 @@
+"""Enter rated TBW from the TUI (issue #107, ADR 0012 §7).
+
+Seam: the app's helper invocation (`_run_helper`), faked here the way the
+other TUI tests fake it.  The form builds an unverified override and hands it
+to `fenris-monitor baseline set`; it never offers verified provenance.
+"""
+import json
+import sys
+from datetime import datetime, timedelta, timezone
+from pathlib import Path
+from types import SimpleNamespace
+from unittest.mock import patch
+
+import pytest
+
+sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
+sys.path.insert(0, str(Path(__file__).parent))
+
+from fenris.monitor import cmd_baseline_set
+from fenris.store import init_store
+from fenris.tui import FenrisTuiApp
+from test_staged_projection import seed_evidence
+
+SERVICES = {
+    "boot_enabled": False, "timer_active": False,
+    "last_collect_ok": None, "last_collect_age_s": None,
+    "last_collect_reason": None,
+}
+
+
+@pytest.fixture
+def db(tmp_path):
+    return tmp_path / "observations.db"
+
+
+def _app(db):
+    return FenrisTuiApp(store_path=db)
+
+
+def _seed_without_baseline(db):
+    now = datetime.now(timezone.utc).replace(minute=0, second=0, microsecond=0)
+    conn = init_store(db)
+    seed_evidence(conn, 3, baseline=None, start=now - timedelta(hours=3))
+    conn.close()
+
+
+def _text(app, selector):
+    return str(app.query_one(selector).render())
+
+
+async def _open_form(pilot):
+    await pilot.press("b")
+    await pilot.pause()
+
+
+async def _fill(pilot, app, tbw, url=""):
+    app.screen.query_one("#tbw-input").value = tbw
+    app.screen.query_one("#source-input").value = url
+    await pilot.press("enter")
+    await pilot.pause()
+
+
+class TestForm:
+    @pytest.mark.asyncio
+    async def test_b_opens_form_with_required_tbw_and_optional_source(self, db):
+        _seed_without_baseline(db)
+        with patch("fenris.status.query_service_state", return_value=SERVICES):
+            app = _app(db)
+            async with app.run_test(size=(120, 50)) as pilot:
+                await _open_form(pilot)
+                assert len(app.screen_stack) == 2
+                assert app.screen.query_one("#tbw-input")
+                assert app.screen.query_one("#source-input")
+                text = str(app.screen.query_one("#baseline-header").render())
+                assert "unverified" in text.lower()
+
+    @pytest.mark.asyncio
+    @pytest.mark.parametrize("value", ["", "abc", "0", "-5", "nan", "inf"])
+    async def test_invalid_tbw_is_rejected_without_calling_helper(self, db, value):
+        _seed_without_baseline(db)
+        with patch("fenris.status.query_service_state", return_value=SERVICES):
+            app = _app(db)
+            with patch.object(app, "_run_helper") as run_helper:
+                async with app.run_test(size=(120, 50)) as pilot:
+                    await _open_form(pilot)
+                    await _fill(pilot, app, value)
+                    assert len(app.screen_stack) == 2
+                    assert str(app.screen.query_one("#baseline-error").render()).strip()
+                run_helper.assert_not_called()
+
+    @pytest.mark.asyncio
+    async def test_invalid_source_url_is_rejected(self, db):
+        _seed_without_baseline(db)
+        with patch("fenris.status.query_service_state", return_value=SERVICES):
+            app = _app(db)
+            with patch.object(app, "_run_helper") as run_helper:
+                async with app.run_test(size=(120, 50)) as pilot:
+                    await _open_form(pilot)
+                    await _fill(pilot, app, "600", "not a url")
+                    assert len(app.screen_stack) == 2
+                    assert "url" in str(app.screen.query_one("#baseline-error").render()).lower()
+                run_helper.assert_not_called()
+
+    @pytest.mark.asyncio
+    async def test_escape_cancels_without_calling_helper(self, db):
+        _seed_without_baseline(db)
+        with patch("fenris.status.query_service_state", return_value=SERVICES):
+            app = _app(db)
+            with patch.object(app, "_run_helper") as run_helper:
+                async with app.run_test(size=(120, 50)) as pilot:
+                    await _open_form(pilot)
+                    await pilot.press("escape")
+                    await pilot.pause()
+                    assert len(app.screen_stack) == 1
+                run_helper.assert_not_called()
+
+
+class TestSubmit:
+    @pytest.mark.asyncio
+    async def test_submit_routes_unverified_override_to_baseline_set(self, db):
+        _seed_without_baseline(db)
+        with patch("fenris.status.query_service_state", return_value=SERVICES):
+            app = _app(db)
+            with patch.object(app, "_run_helper", return_value=True) as run_helper:
+                async with app.run_test(size=(120, 50)) as pilot:
+                    await _open_form(pilot)
+                    await _fill(pilot, app, "600", "https://example.com/spec")
+                    assert len(app.screen_stack) == 1
+                run_helper.assert_called_once()
+                operation, args = run_helper.call_args.args
+                assert operation == "baseline"
+                assert args[0] == "set"
+                payload = json.loads(args[1])
+        assert payload["tbw_terabytes"] == 600
+        assert payload["source_url"] == "https://example.com/spec"
+        assert payload["verified"] is False
+        assert payload["validated_by"] == "user"
+        # Incomplete provenance keeps the override unverified.
+        assert payload["document_revision"] is None
+
+    @pytest.mark.asyncio
+    async def test_blank_source_is_stored_as_absent(self, db):
+        _seed_without_baseline(db)
+        with patch("fenris.status.query_service_state", return_value=SERVICES):
+            app = _app(db)
+            with patch.object(app, "_run_helper", return_value=True) as run_helper:
+                async with app.run_test(size=(120, 50)) as pilot:
+                    await _open_form(pilot)
+                    await _fill(pilot, app, "1.5")
+                payload = json.loads(run_helper.call_args.args[1][1])
+        assert payload["tbw_terabytes"] == 1.5
+        assert payload["source_url"] is None
+
+    @pytest.mark.asyncio
+    async def test_headline_changes_from_write_rate_to_lifespan(self, db):
+        _seed_without_baseline(db)
+
+        def fake_helper(operation, extra_args=None):
+            cmd_baseline_set(SimpleNamespace(store_path=db, baseline_json=extra_args[1]))
+            return True
+
+        with patch("fenris.status.query_service_state", return_value=SERVICES):
+            app = _app(db)
+            with patch.object(app, "_run_helper", side_effect=fake_helper):
+                async with app.run_test(size=(120, 50)) as pilot:
+                    before = _text(app, "#headline-band")
+                    assert "Write rate" in before
+                    assert "remaining" not in before
+                    await _open_form(pilot)
+                    await _fill(pilot, app, "600")
+                    app.on_refresh_tick()
+                    await pilot.pause()
+                    after = _text(app, "#headline-band")
+        assert "remaining" in after
+        assert "Write rate" not in after
+
+
+class TestBanner:
+    @pytest.mark.asyncio
+    async def test_banner_shown_when_no_baseline_applies(self, db):
+        _seed_without_baseline(db)
+        with patch("fenris.status.query_service_state", return_value=SERVICES):
+            app = _app(db)
+            async with app.run_test(size=(120, 50)):
+                banner = app.query_one("#baseline-banner")
+                assert banner.display
+                assert "b" in str(banner.render()).lower()
+                assert "rated tbw" in str(banner.render()).lower()
+
+    @pytest.mark.asyncio
+    async def test_banner_shown_on_first_run(self, tmp_path):
+        with patch("fenris.status.query_service_state", return_value=SERVICES):
+            app = _app(tmp_path / "missing.db")
+            async with app.run_test(size=(120, 50)):
+                assert app.query_one("#baseline-banner").display
+
+    @pytest.mark.asyncio
+    async def test_banner_hidden_once_baseline_exists(self, db):
+        now = datetime.now(timezone.utc).replace(minute=0, second=0, microsecond=0)
+        conn = init_store(db)
+        seed_evidence(conn, 3, start=now - timedelta(hours=3))
+        conn.close()
+        with patch("fenris.status.query_service_state", return_value=SERVICES):
+            app = _app(db)
+            async with app.run_test(size=(120, 50)):
+                assert not app.query_one("#baseline-banner").display
+
+    @pytest.mark.asyncio
+    async def test_banner_hidden_for_unreadable_store(self, db):
+        db.write_bytes(b"not a sqlite database" * 100)
+        with patch("fenris.status.query_service_state", return_value=SERVICES):
+            app = _app(db)
+            async with app.run_test(size=(120, 50)):
+                assert not app.query_one("#baseline-banner").display

tests/test_tui_diagnostics.py

@@ -0,0 +1,152 @@
+"""Diagnostics panel on the dashboard (issue #109): toggle, render, badge."""
+import sqlite3
+
+import pytest
+from test_dashboard_design import dashboard, visible  # noqa: F401  (fixtures)
+
+from fenris.tui import FenrisTuiApp, HelpScreen
+
+
+def _store(app):
+    return sqlite3.connect(app.store_path)
+
+
+def _set_latest_warning(app, value):
+    conn = _store(app)
+    conn.execute(
+        "UPDATE samples SET critical_warning = ?, power_on_hours = id, "
+        "unsafe_shutdowns = id / 20 WHERE 1", (value,))
+    conn.commit()
+    conn.close()
+
+
+async def _settle(app, pilot):
+    app.on_refresh_tick()
+    await pilot.pause()
+
+
+def _text(app, selector):
+    return str(app.query_one(selector).render())
+
+
+def test_i_is_a_declared_binding_and_d_stays_disclosures():
+    keys = {b.key: b.action for b in FenrisTuiApp.BINDINGS}
+    assert keys["i"] == "toggle_diagnostics"
+    assert keys["d"] == "disclose"
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("size", [(140, 44), (100, 30)])
+async def test_i_toggles_the_diagnostics_panel_and_hides_the_drive_pane(dashboard, size):  # noqa: F811
+    app = dashboard
+    _set_latest_warning(app, 0)
+    async with app.run_test(size=size) as pilot:
+        await _settle(app, pilot)
+        assert not app.query_one("#diagnostics-panel").display
+        assert app.query_one("#drive-panel").display
+        await pilot.press("i")
+        await _settle(app, pilot)
+        assert app.query_one("#diagnostics-panel").display
+        assert not app.query_one("#drive-panel").display
+        body = _text(app, "#diagnostics")
+        assert "Diagnostics" in body and "Critical warning none" in body
+        assert "Power-on hours 61 Δ +60" in body
+        await pilot.press("i")
+        await _settle(app, pilot)
+        assert not app.query_one("#diagnostics-panel").display
+        assert app.query_one("#drive-panel").display
+
+
+@pytest.mark.asyncio
+async def test_footer_and_help_list_the_diagnostics_key(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(140, 40)) as pilot:
+        await _settle(app, pilot)
+        assert "i Diagnostics" in _text(app, "#action-rail")
+        await pilot.press("?")
+        assert isinstance(app.screen, HelpScreen)
+        assert "Diagnostics" in str(app.screen.query_one("#help-text").render())
+
+
+@pytest.mark.asyncio
+async def test_diagnostics_follow_the_activity_view(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(140, 44)) as pilot:
+        await _settle(app, pilot)
+        await pilot.press("i")
+        await _settle(app, pilot)
+        assert "last 3h" in _text(app, "#diagnostics")
+        await pilot.press("v")  # Day
+        await _settle(app, pilot)
+        body = _text(app, "#diagnostics")
+        assert "· day 20" in body and "Hours ·" in body
+        await pilot.press("v")  # History
+        await _settle(app, pilot)
+        assert "last 14 days" in _text(app, "#diagnostics")
+
+
+@pytest.mark.asyncio
+async def test_critical_warning_badge_shows_in_the_outlook_without_the_panel(dashboard):  # noqa: F811
+    app = dashboard
+    _set_latest_warning(app, 0x04)
+    async with app.run_test(size=(140, 44)) as pilot:
+        await _settle(app, pilot)
+        assert not app.query_one("#diagnostics-panel").display
+        band = _text(app, "#headline-band")
+        assert "0x04" in band and "reliability degraded" in band
+
+
+@pytest.mark.asyncio
+async def test_no_badge_when_the_drive_reports_no_warning(dashboard):  # noqa: F811
+    app = dashboard
+    _set_latest_warning(app, 0)
+    async with app.run_test(size=(140, 44)) as pilot:
+        await _settle(app, pilot)
+        assert "critical warning" not in _text(app, "#headline-band").lower()
+
+
+@pytest.mark.asyncio
+async def test_diagnostics_work_in_constrained_mode(dashboard):  # noqa: F811
+    app = dashboard
+    _set_latest_warning(app, 0x01)
+    async with app.run_test(size=(60, 20)) as pilot:
+        await _settle(app, pilot)
+        assert app._is_constrained_mode
+        await pilot.press("i")
+        await _settle(app, pilot)
+        assert app.query_one("#diagnostics-panel").display
+        body = _text(app, "#diagnostics")
+        assert "available spare below threshold" in body
+        assert "Power-on hours" in body
+        await pilot.press("i")
+        await _settle(app, pilot)
+        assert app.query_one("#drive-panel").display
+
+
+@pytest.mark.asyncio
+async def test_toggling_while_zoomed_restores_the_grid_and_keeps_focus(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(140, 44)) as pilot:
+        await _settle(app, pilot)
+        await pilot.press("z")
+        await pilot.press("i")
+        await _settle(app, pilot)
+        assert app._zoomed_panel is None
+        assert app.focused is not None
+
+
+@pytest.mark.asyncio
+async def test_history_bars_draw_reads_alongside_writes_only_with_diagnostics(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(140, 44)) as pilot:
+        await _settle(app, pilot)
+        await pilot.press("v", "v")  # History
+        await _settle(app, pilot)
+        assert "Reads" not in _text(app, "#bar-legend")
+        await pilot.press("i")
+        await _settle(app, pilot)
+        legend = _text(app, "#bar-legend")
+        assert "Writes" in legend and "Reads" in legend
+        await pilot.press("i")
+        await _settle(app, pilot)
+        assert "Reads" not in _text(app, "#bar-legend")

tests/test_tui_navigation.py

@@ -0,0 +1,456 @@
+"""Unified keyboard and mouse navigation (issue #110).
+
+Every action has one declaration: a Binding.  The footer, the help screen and
+the clickable chips are all generated from those bindings, and the keyboard,
+mouse and wheel paths reach the same actions.  Pilot drives each path.
+"""
+import re
+from datetime import date, timedelta
+from unittest.mock import patch
+
+import pytest
+from test_dashboard_design import dashboard  # noqa: F401  (pytest fixture)
+from textual import events
+from textual.geometry import Region
+
+from fenris.tui import (
+    ConfirmPause,
+    DatePickerScreen,
+    BaselineScreen,
+    DisclosuresScreen,
+    FenrisTuiApp,
+    HelpScreen,
+    HistoryGraph,
+    LiveActivityGraph,
+)
+
+BINDING_SOURCES = (FenrisTuiApp, LiveActivityGraph, HistoryGraph)
+
+
+# -- helpers ---------------------------------------------------------------
+
+async def _settle(app, pilot):
+    app.on_refresh_tick()
+    await pilot.pause()
+
+
+def _chip(app, label):
+    """Offset of a footer or tool chip label inside its Static."""
+    for selector in ("#action-rail", "#activity-tools"):
+        widget = app.query_one(selector)
+        region = Region(0, 0, widget.size.width, widget.size.height)
+        for y, strip in enumerate(widget.render_lines(region)):
+            x = strip.text.find(label)
+            if x >= 0:
+                return selector, (x + 1, y)
+    raise AssertionError("no chip %r in footer" % label)
+
+
+async def _click_chip(app, pilot, label):
+    selector, offset = _chip(app, label)
+    await pilot.click(selector, offset=offset)
+    await pilot.pause()
+
+
+def _scroll(widget, direction):
+    event = (events.MouseScrollUp if direction < 0 else events.MouseScrollDown)(
+        widget, 3, 1, 0, direction, 0, False, False, False,
+    )
+    widget.post_message(event)
+
+
+def _help_rows(app):
+    text = str(app.screen.query_one("#help-text").render())
+    section = text.split("Keyboard controls\n", 1)[1].split("\n\n", 1)[0]
+    rows = {}
+    for line in section.splitlines():
+        keys, description = re.match(r"^(\S.*?)\s{2,}(\S.*)$", line).groups()
+        rows[description] = set(keys.split(" / "))
+    return rows
+
+
+def _binding_rows(app):
+    rows = {}
+    for source in BINDING_SOURCES:
+        for binding in source.BINDINGS:
+            rows.setdefault(binding.description, set()).add(app.get_key_display(binding))
+    return rows
+
+
+# -- one source of truth ---------------------------------------------------
+
+def test_graphs_declare_bindings_instead_of_key_handlers():
+    for graph in (HistoryGraph, LiveActivityGraph):
+        assert "on_key" not in vars(graph)
+        assert graph.BINDINGS
+
+
+@pytest.mark.asyncio
+async def test_help_content_equals_binding_set(dashboard):  # noqa: F811
+    async with dashboard.run_test(size=(100, 36)) as pilot:
+        await pilot.press("?")
+        assert isinstance(dashboard.screen, HelpScreen)
+        assert _help_rows(dashboard) == _binding_rows(dashboard)
+        assert "The dashboard does not need sudo" in str(
+            dashboard.screen.query_one("#help-text").render())
+
+
+@pytest.mark.asyncio
+async def test_footer_chips_are_generated_from_visible_bindings(dashboard):  # noqa: F811
+    async with dashboard.run_test(size=(120, 36)) as pilot:
+        await pilot.pause()
+        footer = str(dashboard.query_one("#action-rail").render())
+        shown = [b for b in FenrisTuiApp.BINDINGS if b.show]
+        assert shown
+        for binding in shown:
+            assert "%s %s" % (dashboard.get_key_display(binding), binding.description) in footer
+        for binding in FenrisTuiApp.BINDINGS:
+            if not binding.show:
+                label = "%s %s" % (dashboard.get_key_display(binding), binding.description)
+                assert label not in footer
+
+
+@pytest.mark.asyncio
+@pytest.mark.parametrize("size", [(79, 24), (80, 23), (60, 18)])
+async def test_footer_collapses_under_80x24(dashboard, size):  # noqa: F811
+    async with dashboard.run_test(size=size) as pilot:
+        await pilot.pause()
+        assert str(dashboard.query_one("#action-rail").render()) == "? help · q quit"
+        await _click_chip(dashboard, pilot, "? help")
+        assert isinstance(dashboard.screen, HelpScreen)
+        await pilot.press("escape")
+        await _click_chip(dashboard, pilot, "q quit")
+        assert not dashboard.is_running
+
+
+@pytest.mark.asyncio
+async def test_footer_is_full_at_80x24(dashboard):  # noqa: F811
+    async with dashboard.run_test(size=(80, 24)) as pilot:
+        await pilot.pause()
+        footer = str(dashboard.query_one("#action-rail").render())
+        assert "p Pause" in footer and "q Quit TUI" in footer
+
+
+# -- keyboard: live graph --------------------------------------------------
+
+@pytest.mark.asyncio
+async def test_live_home_end_and_arrows(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(100, 36)) as pilot:
+        await _settle(app, pilot)
+        graph = app.query_one("#live-activity")
+        last = len(graph._data) - 1
+        assert last > 3
+        await pilot.press("home")
+        assert graph._selected_index == 0
+        await pilot.press("right")
+        assert graph._selected_index == 1
+        await pilot.press("end")
+        assert graph._selected_index == last
+        await pilot.press("left")
+        assert graph._selected_index == last - 1
+
+
+# -- keyboard: history graph -----------------------------------------------
+
+async def _open_history(app, pilot):
+    await pilot.click("#view-history")
+    await _settle(app, pilot)
+    graph = app.query_one("#usage-history")
+    assert app.focused is graph
+    return graph
+
+
+@pytest.mark.asyncio
+async def test_history_home_end_and_week_jumps(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(100, 36)) as pilot:
+        graph = await _open_history(app, pilot)
+        last = len(graph._day_data) - 1
+        assert last >= 13
+        await pilot.press("home")
+        assert graph.selected_index == 0
+        await pilot.press("end")
+        assert graph.selected_index == last
+        assert app._browse_date == graph._day_data[last]["day"]
+        await pilot.press("pageup")
+        assert graph.selected_index == last - 7
+        assert app._browse_date == graph._day_data[last - 7]["day"]
+        await pilot.press("pagedown")
+        assert graph.selected_index == last
+        await pilot.press("pagedown")
+        assert graph.selected_index == last
+        await pilot.press("home", "pageup")
+        assert graph.selected_index == 0
+
+
+@pytest.mark.asyncio
+async def test_history_range_keys_and_drill_bindings(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(100, 36)) as pilot:
+        graph = await _open_history(app, pilot)
+        await pilot.press("1")
+        assert graph.range_days == 7
+        await pilot.press("3")
+        assert graph.range_days == 30
+        await pilot.press("left", "enter")
+        assert app._activity_view == "day" and graph.view_mode == "hourly"
+        await pilot.press("1")
+        assert graph.range_days == 30  # range keys only apply to the day graph
+        await pilot.press("escape")
+        assert graph.view_mode == "daily" and app._activity_view == "history"
+        await pilot.press("enter")
+        await pilot.press("backspace")
+        assert graph.view_mode == "daily"
+
+
+@pytest.mark.asyncio
+async def test_hour_graph_home_end_arrows_and_week_jump(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(100, 36)) as pilot:
+        graph = await _open_history(app, pilot)
+        await pilot.press("enter")
+        day = app._browse_date
+        await pilot.press("home")
+        assert graph._hourly_selected == 0
+        await pilot.press("right")
+        assert graph._hourly_selected == 1
+        await pilot.press("end")
+        assert graph._hourly_selected == len(graph._hour_data) - 1
+        await pilot.press("left")
+        assert graph._hourly_selected == len(graph._hour_data) - 2
+        await pilot.press("pageup")
+        assert app._activity_view == "day"
+        assert app._browse_date == (date.fromisoformat(day) - timedelta(days=7)).isoformat()
+
+
+@pytest.mark.asyncio
+async def test_escape_in_zoomed_hour_view_restores_zoom_first(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(100, 36)) as pilot:
+        graph = await _open_history(app, pilot)
+        await pilot.press("enter", "z")
+        assert app._zoomed_panel == "activity-panel"
+        await pilot.press("escape")
+        assert app._zoomed_panel is None and graph.view_mode == "hourly"
+        await pilot.press("escape")
+        assert graph.view_mode == "daily"
+
+
+# -- keyboard: focus ring --------------------------------------------------
+
+@pytest.mark.asyncio
+async def test_tab_cycles_panels_with_visible_focus_ring(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(120, 40)) as pilot:
+        await pilot.pause()
+        order = [app.focused.id]
+        for _ in range(3):
+            await pilot.press("tab")
+            order.append(app.focused.id)
+        assert order == ["live-activity", "drive-panel", "endurance-panel", "live-activity"]
+        await pilot.press("shift+tab")
+        assert app.focused.id == "endurance-panel"
+        await pilot.press("shift+tab")
+        assert app.focused.id == "drive-panel"
+
+        def ring(pane_id):
+            return app.query_one("#" + pane_id).styles.border_top[1]
+
+        assert ring("drive-panel") != ring("endurance-panel")
+        await pilot.press("tab")
+        assert app.focused.id == "endurance-panel"
+        assert ring("endurance-panel") != ring("drive-panel")
+        await pilot.press("tab")
+        assert ring("activity-panel") != ring("drive-panel")
+
+
+# -- mouse -----------------------------------------------------------------
+
+@pytest.mark.asyncio
+async def test_click_focuses_each_panel(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(120, 40)) as pilot:
+        await pilot.pause()
+        await pilot.click("#drive-health")
+        assert app.focused.id == "drive-panel"
+        await pilot.click("#headline-band")
+        assert app.focused.id == "endurance-panel"
+        await pilot.click("#local-day")
+        assert app.focused.id == "live-activity"
+        await pilot.click("#view-history")
+        await pilot.click("#drive-health")
+        await pilot.click("#local-day")
+        assert app.focused.id == "usage-history"
+
+
+@pytest.mark.asyncio
+async def test_view_tabs_are_clickable(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(100, 36)) as pilot:
+        for view in ("history", "day", "live"):
+            await pilot.click("#view-" + view)
+            assert app._activity_view == view
+            assert app.query_one("#activity-tabs").active == "view-" + view
+
+
+@pytest.mark.asyncio
+async def test_action_chips_fire_their_bindings(dashboard):  # noqa: F811
+    app = dashboard
+    calls = []
+    async with app.run_test(size=(120, 40)) as pilot:
+        await pilot.pause()
+        with patch.object(app, "_run_helper", side_effect=lambda *a: calls.append(a) or True):
+            await _click_chip(app, pilot, "p Pause")
+            assert isinstance(app.screen, ConfirmPause)
+            await pilot.press("n")
+            await _click_chip(app, pilot, "r Resume")
+            assert calls == [("enable", ["--now"])]
+            await _click_chip(app, pilot, "c Collect")
+            assert calls[-1] == ("collect",)
+            await _click_chip(app, pilot, "b Rated TBW")
+            assert isinstance(app.screen, BaselineScreen)
+            await pilot.press("escape")
+        await _click_chip(app, pilot, "s Theme")
+        assert app.theme == "fenris-amber"
+        await _click_chip(app, pilot, "d Disclosures")
+        assert isinstance(app.screen, DisclosuresScreen)
+        await pilot.press("escape")
+        await _click_chip(app, pilot, "z Zoom")
+        assert app._zoomed_panel is not None
+        await _click_chip(app, pilot, "z Zoom")
+        assert app._zoomed_panel is None
+        await _click_chip(app, pilot, "v View")
+        assert app._activity_view == "day"
+        await _click_chip(app, pilot, "m Motion")
+        assert app._reduced_motion is True
+
+
+@pytest.mark.asyncio
+async def test_activity_tool_chips_are_generated_from_bindings(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(120, 40)) as pilot:
+        await pilot.pause()
+        tools = str(app.query_one("#activity-tools").render())
+        for action in ("prev_day", "next_day", "go_to_date", "today", "toggle_measure"):
+            binding = next(b for b in FenrisTuiApp.BINDINGS if b.action == action)
+            assert "%s %s" % (app.get_key_display(binding), binding.description) in tools
+        await _click_chip(app, pilot, "w Toggle read/write")
+        assert app.query_one("#live-activity").measure == "read"
+        await _click_chip(app, pilot, "g Go to date")
+        assert isinstance(app.screen, DatePickerScreen)
+        await pilot.press("escape")
+        await _click_chip(app, pilot, "Prev day")
+        assert app._activity_view == "day"
+        await _click_chip(app, pilot, "t Today")
+        assert app._activity_view == "live"
+
+
+@pytest.mark.asyncio
+async def test_wheel_moves_live_selection(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(100, 36)) as pilot:
+        await _settle(app, pilot)
+        graph = app.query_one("#live-activity")
+        last = len(graph._data) - 1
+        _scroll(graph, -1)
+        await pilot.pause()
+        assert graph._selected_index == last - 1
+        _scroll(graph, -1)
+        await pilot.pause()
+        assert graph._selected_index == last - 2
+        _scroll(graph, 1)
+        await pilot.pause()
+        assert graph._selected_index == last - 1
+
+
+@pytest.mark.asyncio
+async def test_wheel_moves_history_day_and_hour_selection(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(100, 36)) as pilot:
+        graph = await _open_history(app, pilot)
+        last = len(graph._day_data) - 1
+        _scroll(graph, -1)
+        await pilot.pause()
+        assert graph.selected_index == last - 1
+        _scroll(graph, 1)
+        await pilot.pause()
+        assert graph.selected_index == last
+        await pilot.press("enter", "end")
+        end = graph._hourly_selected
+        _scroll(graph, -1)
+        await pilot.pause()
+        assert graph._hourly_selected == end - 1
+
+
+@pytest.mark.asyncio
+async def test_click_to_inspect_stays(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(100, 36)) as pilot:
+        await pilot.pause()
+        graph = app.query_one("#live-activity")
+        await pilot.click("#live-render", offset=(graph._point_columns[0], 1))
+        assert graph._selected_index == 0
+
+
+# -- modal keys ------------------------------------------------------------
+
+@pytest.mark.asyncio
+async def test_confirm_pause_y_n_and_escape(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(100, 36)) as pilot:
+        with patch.object(app, "_run_helper") as helper:
+            await pilot.press("p", "n")
+            assert not isinstance(app.screen, ConfirmPause)
+            await pilot.press("p", "escape")
+            assert not isinstance(app.screen, ConfirmPause)
+            helper.assert_not_called()
+            await pilot.press("p", "y")
+            assert not isinstance(app.screen, ConfirmPause)
+            helper.assert_called_once_with("disable", ["--now"])
+
+
+@pytest.mark.asyncio
+async def test_date_picker_keys(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(100, 36)) as pilot:
+        await _settle(app, pilot)
+        await pilot.press("g", "escape")
+        assert not isinstance(app.screen, DatePickerScreen)
+        await pilot.press("g", "enter")
+        assert isinstance(app.screen, DatePickerScreen)
+        assert "Please enter a date" in str(app.screen.query_one("#date-error").render())
+        await pilot.press(*"2026-13-45", "enter")
+        assert "Invalid date format" in str(app.screen.query_one("#date-error").render())
+        app.screen.query_one("#date-input").value = ""
+        await pilot.press(*"2999-01-01", "enter")
+        assert "future" in str(app.screen.query_one("#date-error").render())
+        app.screen.query_one("#date-input").value = ""
+        await pilot.press(*"2026-09-17", "enter")
+        assert not isinstance(app.screen, DatePickerScreen)
+        assert app._browse_date == "2026-09-17"
+        assert app._activity_view == "day"
+
+
+@pytest.mark.asyncio
+async def test_disclosures_and_help_toggle_keys(dashboard):  # noqa: F811
+    app = dashboard
+    async with app.run_test(size=(100, 36)) as pilot:
+        await pilot.press("d")
+        assert isinstance(app.screen, DisclosuresScreen)
+        await pilot.press("d")
+        assert not isinstance(app.screen, DisclosuresScreen)
+        await pilot.press("d", "escape")
+        assert not isinstance(app.screen, DisclosuresScreen)
+        await pilot.press("?")
+        assert isinstance(app.screen, HelpScreen)
+        await pilot.press("?")
+        assert not isinstance(app.screen, HelpScreen)
+        await pilot.press("?", "escape")
+        assert not isinstance(app.screen, HelpScreen)
+
+
+@pytest.mark.asyncio
+async def test_single_dashboard_has_no_page_navigation_bindings(dashboard):  # noqa: F811
+    keys = {b.key for b in FenrisTuiApp.BINDINGS}
+    assert not keys & {"left", "right", "1", "2", "3", "4", "home", "end", "pageup", "pagedown"}