AGENTS.md layout now lists app_identity, legacy_import, model_ladder,
packaging/void, the perf protocol script, the Gitea workflows and the
niri doc, as its own maintenance rule requires.
USER_GUIDE orders Wayland autodetection wtype before ydotool, matching
the decided ladder, and says the portal is never tried on niri.
docs/NIRI.md states the niri first dictation (no prompt; typing goes
direct through wtype; IBus excluded) and points to the GNOME and KDE
section.
Docs-only slice of ticket #22: include file, integration page, index
links. Tray-watcher observation stays open for hardware run (#32); no
probe code changed.
Refs #22