Apply Biome safe lint autofixes

Mechanical, behavior-preserving fixes from `biome check --write` (safe only):
- noUselessEscapeInRegex: drop redundant escapes inside character classes
  (`\.`→`.`, `\[`→`[`, `\|`→`|`; `\]` correctly kept) in catalog.ts, the
  wikisource importer, and product-reader.jsx — identical matching.
- useConst (turnkey btc `change`), noUselessContinue (liber-core extract loop —
  the continue was the last stmt in the iteration; added a comment so the now-
  empty branch reads as intentional).
- Dropped a stale `@ts-ignore` on the product-data import (Biome rewrote it to
  `@ts-expect-error`, which tsc then flagged as unused — the import type-checks
  fine, so the directive is gone).

`npm test` green (176 + 10 + 73). Remaining ~713 lint errors are JSX a11y +
correctness that need human judgment (next: triage + ratchet to blocking).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: DaviRain-Su

functions/lib/catalog.ts

@@ -177,7 +177,7 @@ function isEnglishSentenceDot(text: string, i: number): boolean {
   if (/\b(?:i\.e|e\.g|A\.D|B\.C|U\.S|U\.K)\.$/i.test(before)) return false;
   if (/\b[A-Z](?:\.[A-Z])+\.$/.test(before)) return false;
   if (/\b[A-Z]\.$/.test(before) && /^\s*[A-Z]\./.test(after)) return false;
-  return /^\s*(?:["'”’)\]]+\s*)?(?:$|[A-Z0-9“"‘'\[(])/.test(after);
+  return /^\s*(?:["'”’)\]]+\s*)?(?:$|[A-Z0-9“"‘'[(])/.test(after);
 }
 
 function splitSentences(para: string): string[] {
@@ -203,15 +203,15 @@ function splitSentences(para: string): string[] {
 function lineLooksHeading(line: string): boolean {
   const text = line.trim();
   if (!text || text.length > 80) return false;
-  if (/[\.\?!:;。！？；]$/.test(text)) return false;
+  if (/[.?!:;。！？；]$/.test(text)) return false;
   const letters = text.replace(/[^A-Za-z]/g, "");
   return letters.length >= 4 && letters === letters.toUpperCase();
 }
 
 function shouldReflowBlocks(blocks: string[]): boolean {
   if (blocks.length < 8) return false;
   const proseLines = blocks.filter((b) => b.length >= 35 && b.length <= 95).length;
-  const unfinished = blocks.filter((b) => !/[\.\?!;:。！？；\]"”’)]$/.test(b)).length;
+  const unfinished = blocks.filter((b) => !/[.?!;:。！？；\]"”’)]$/.test(b)).length;
   return proseLines / blocks.length > 0.55 && unfinished / blocks.length > 0.35;
 }
 
@@ -234,8 +234,8 @@ function reflowWrappedBlocks(blocks: string[]): string[] {
     const line = block.replace(/\s+/g, " ").trim();
     if (!line) continue;
     const startsStructure =
-      /^\d+[\.\)]\s+/.test(line) || /^\[[^\]]/.test(line) || lineLooksHeading(line);
-    const prevComplete = /[\.\?!。！？\]"”’)]$/.test(prev);
+      /^\d+[.)]\s+/.test(line) || /^\[[^\]]/.test(line) || lineLooksHeading(line);
+    const prevComplete = /[.?!。！？\]"”’)]$/.test(prev);
     if (acc && (startsStructure || prevComplete)) flush();
     if (lineLooksHeading(line)) {
       flush();

functions/lib/seed.ts

@@ -1,7 +1,7 @@
 // Shared seed data — the SAME catalogue/content the frontend renders, so the
 // API serves identical reference data. User-generated content (D1) is merged on
 // top of these baselines on read. One source of truth for both tiers.
-// @ts-ignore — plain-JS data module with named exports (no type declarations)
+// plain-JS data module with named exports (no type declarations)
 import * as seed from "../../src/data/product-data.js";
 
 const s = seed as Record<string, any>;

functions/routes/turnkey.ts

@@ -990,7 +990,7 @@ turnkey.post("/btc/prepare", async (c) => {
     const inVal = BigInt(utxo.value);
     const ownProgram = p2wpkhProgram(from);
     const recScript = p2wpkhScript(p2wpkhProgram(to));
-    let change = inVal - amountSats - fee2;
+    const change = inVal - amountSats - fee2;
     const outputs: TxOutput[] = [{ script: recScript, value: amountSats }];
     if (change >= DUST_P2WPKH) outputs.push({ script: p2wpkhScript(ownProgram), value: change });
     else {

packages/liber-cli/src/liber-core.mjs

@@ -1745,7 +1745,7 @@ export async function extractEpubChapters(filePath) {
       isNavigationNoiseTitle(title, bookTitle) &&
       !(isSameBookTitle(title, bookTitle) && !chapters.length)
     ) {
-      continue;
+      // navigation-noise entry (cover/TOC/colophon) — intentionally dropped
     } else if (isSameBookTitle(title, bookTitle) && chapters.length) {
       const previous = chapters[chapters.length - 1];
       previous.text = cleanExtractedChapterText(previous.title, `${previous.text}\n\n${text}`);

scripts/import-wikisource-classics.mjs

@@ -7291,7 +7291,7 @@ function cleanWikisourceWikitext(raw) {
   text = text.replace(/\[https?:\/\/[^\]\s]+(?:\s+([^\]]+))?\]/giu, "$1");
   text = text.replace(/^\s*(?:(?:上一篇|下一篇|回目录|回目錄|目录|目錄)\s*){1,8}\s*$/gmu, "");
   text = stripTemplates(text);
-  text = text.replace(/\{\{\s*[Pp]roper[Nn]oun\s*\|\s*([^{}\]\|]+)(?:\}\]|\}|\])/gu, "$1");
+  text = text.replace(/\{\{\s*[Pp]roper[Nn]oun\s*\|\s*([^{}\]|]+)(?:\}\]|\}|\])/gu, "$1");
   text = text.replace(/\{\{\s*\*\s*\|[^}\n]*\}/gu, "");
   text = text.replace(/-\{([^{}]+)\}-/gu, (_, body) => chooseVariant(body));
   text = stripTemplates(text);

src/components/product-reader.jsx

@@ -1249,7 +1249,7 @@ function Reader({ bookId, startChapter, onClose, continueConvo, onOpenBook }) {
     );
   };
   const needsSentenceGap = (left, right) =>
-    /[A-Za-z0-9"”’')\]]$/.test(left?.t || "") && /^[A-Za-z0-9"“‘'(\[]/.test(right?.t || "");
+    /[A-Za-z0-9"”’')\]]$/.test(left?.t || "") && /^[A-Za-z0-9"“‘'([]/.test(right?.t || "");
   const renderParagraph = (p, i) => (
     <p key={i}>
       {p.map((s, j) => (