fix: eslint findings

Remove dead code and unused imports, drop useless assignments, and tune
rules in eslint.config.js (underscore-prefixed unused names, intentional BOM/NBSP,
React Compiler rules from eslint-plugin-react-hooks 7 as warnings).

src/pdf/templates/band/plan.ts

@@ -15,8 +15,6 @@ export const REVERSE_GAP = 4;
 export const HEADING_AFTER = 4;
 /** Space between the closing block's two columns. */
 export const CLOSING_COLUMN_GAP = 16;
-/** Slate: space between a mark and the business name in the dark band. */
-const NAME_AFTER_LOGO = 7.8;
 /** Space above and below the thin rule that separates the stack from TOTAL. */
 export const STACK_RULE = { before: 2, after: 8, thickness: 0.75 };
 const MIN_NAME_W = 40;

src/pdf/templates/harness.test.tsx

@@ -1,17 +1,9 @@
 import { mkdirSync, writeFileSync } from "node:fs";
 import path from "node:path";
 import { describe, expect, it } from "vitest";
-import type { AuditIssue } from "../engine/audit";
-import { PAGE_SIZES } from "../engine/geometry";
-import { PAGE_LABEL_ID, TABLE_HEAD_ID, TABLE_ROW_PREFIX, CLOSING_ID, TOTALS_ID } from "../engine/ids";
-import { walk, type LayoutNode, type LayoutPage, type Rect } from "../engine/layoutTree";
-import { forbiddenProbe, SLOT_RULES, slotContent, type SlotName } from "../model/slots";
-import { frameForPrefs, renderInvoicePdf } from "../render/invoice";
 import { loadCanvas, pagePng } from "../testing/rasterize";
-import { SLOT_ID } from "../blocks/slots";
-import { META_ID, SUPPLIER_ID, TITLE_ID } from "./classic/ids";
-import { HEADER_GAP, headerCols } from "./classic/plan";
-import { FIXTURE_GSTIN, FIXTURES, buildFixture, ensureSetup, makeItems, PAGE_SIZE_IDS, prefsFor, renderFixture, type FixtureSpec, type Rendered } from "./harness";
+import { renderInvoicePdf } from "../render/invoice";
+import { FIXTURES, buildFixture, ensureSetup, PAGE_SIZE_IDS, prefsFor, renderFixture, type FixtureSpec } from "./harness";
 import { TEMPLATES } from "./registry";
 
 /**

src/pdf/templates/highlighter/Layout.tsx

@@ -1,6 +1,6 @@
 import { Image, View } from "@react-pdf/renderer";
 import type { ReactNode } from "react";
-import { colsDetailed, pinned } from "../../engine/columns";
+import { pinned } from "../../engine/columns";
 import { CLOSING_ID, TABLE_HEAD_ID, TABLE_ROW_PREFIX, TOTALS_ID } from "../../engine/ids";
 import { AvailableWidthProvider } from "../../blocks/AvailableWidth";
 import { BottomSpacer } from "../../blocks/BottomSpacer";

src/pdf/templates/marble/Layout.tsx

@@ -202,7 +202,7 @@ function Parties({ ctx }: { ctx: Ctx }) {
   const blocks: ReactNode[] = [<ClientBlock key="a" ctx={ctx} width={text[0]} />];
   let k = 1;
   if (plan.info.hasBank) blocks.push(<PayableBlock key="b" ctx={ctx} width={text[k++]} />);
-  if (plan.info.hasIds) blocks.push(<IdsBlock key="c" ctx={ctx} width={text[k++]} />);
+  if (plan.info.hasIds) blocks.push(<IdsBlock key="c" ctx={ctx} width={text[k]} />);
   const specs: ColSpec[] = cols.map((w, i) => (i === cols.length - 1 ? { fill: true } : { fixed: w }));
   return (
     <View style={{ ...pinned(plan.W), paddingLeft: v.inset.left } as never}>

src/pdf/templates/marble/plan.ts

@@ -151,7 +151,7 @@ export function planMarble(model: RenderModel, frame: PageFrame, v: MarbleVarian
   let k = 0;
   const clientW = textW(k++);
   const bankW = hasBank ? textW(k++) : 0;
-  const idsW = hasIds ? textW(k++) : 0;
+  const idsW = hasIds ? textW(k) : 0;
   const head = leading(r.heading) + v.parties.headingGap;
   let clientH = head + textHeight(r.body, c.name, clientW);
   for (const l of c.addressLines) clientH += textHeight(r.body, l, clientW);

src/pdf/templates/neutral/plan.ts

@@ -296,7 +296,7 @@ export function planNeutral(model: RenderModel, frame: PageFrame, v: NeutralVari
     for (const l of lines) payH += textHeight(r.address, l, payW);
   }
   if (v.id === "serenity") signH += leading(r.label) + 4;
-  let closingH = 0;
+  let closingH: number;
   if (v.payTo.where === "closing") closingH = Math.max(payH, signH);
   else closingH = signH;
   if (model.cancelled) closingH += 10 + textHeight(r.small, CANCELLED_SENTENCE, W);