Merge remote-tracking branch 'origin/master' into codex/fs-directory-listing

# Conflicts:
#	docs/rfc/README.md
#	packages/fs/fs-local/src/index.ts

scripts/translation-pairing.manifest.json

@@ -0,0 +1,16 @@
+{
+  "required": [
+    "README.md",
+    "docs/development.md",
+    "docs/i18n/README.md",
+    "docs/i18n/translation-rules.md",
+    "docs/rfc/implemented/process/2026-07-02-bilingual-docs-and-pairing-gate.md"
+  ],
+  "excluded": [
+    "docs/AGENTS.md",
+    "docs/module-graph.md",
+    "docs/cordis-catalog/",
+    "docs/tool-catalog/",
+    "docs/i18n/terminology.md"
+  ]
+}

scripts/verify-md-links.ts

@@ -48,6 +48,7 @@ const root = resolve(import.meta.dirname, '..')
  */
 const PATTERNS = [
   'README.md',
+  'README.zh.md',
   'docs/**/*.md',
   'packages/*/*.md',
   'packages/*/*/*.md',

scripts/verify-md-wrap.ts

@@ -36,7 +36,7 @@ import type { Nodes } from 'mdast'
 const root = resolve(import.meta.dirname, '..')
 
 /** Files to check: doc-typecheck's scope plus the AGENTS.md pair. */
-const PATTERNS = ['README.md', 'docs/**/*.md', 'packages/*/*.md', 'packages/*/*/*.md', 'AGENTS.md', 'packages/AGENTS.md']
+const PATTERNS = ['README.md', 'README.zh.md', 'docs/**/*.md', 'packages/*/*.md', 'packages/*/*/*.md', 'AGENTS.md', 'packages/AGENTS.md']
 
 /** A located hard-wrap: a prose paragraph spanning more than one source line. */
 interface Violation {

scripts/verify-rfc-classification.ts

@@ -68,6 +68,9 @@ for (const lifecycle of LIFECYCLES) {
     const segs = match.split('/')
     // Allowlisted file directly at the lifecycle root (e.g. implemented/AGENTS.md).
     if (segs.length === 2 && ROOT_ALLOWLIST.has(segs[1] ?? '')) continue
+    // A Chinese counterpart (foo.zh.md, docs/i18n/README.md) is the SAME RFC,
+    // indexed via its English filename; the pairing gate owns its consistency.
+    if (match.endsWith('.zh.md')) continue
     const cls = segs[1]
     const base = segs[2]
     if (segs.length !== 3 || cls === undefined || base === undefined) {

scripts/verify-translation-pairing.ts

@@ -0,0 +1,335 @@
+/**
+ * Doc-sync gate: enforce the bilingual pairing contract (docs/i18n/README.md).
+ * English and Chinese carry EQUAL authority — either language may be authored
+ * first — so consistency is recorded per pair in a sidecar metadata file,
+ * `foo.i18n.yaml`, holding the full git blob hash of BOTH files as of the last
+ * time a human confirmed the two say the same thing:
+ *
+ *   foo.md: <40-hex blob hash>
+ *   foo.zh.md: <40-hex blob hash>
+ *
+ * The gate checks, mechanically, the checkable half of the contract:
+ *
+ *   1. Every file in the manifest's `required` list has a COMPLETE pair
+ *      (the enforcement frontier — grows batch by batch).
+ *   2. Every pair that exists at all is complete and consistent: all three
+ *      files present (a `.zh.md` or a `.i18n.yaml` without its counterparts
+ *      is an error — pairs merge whole, never half), each side's current
+ *      blob hash equals the recorded one (an edit to EITHER side without a
+ *      re-confirmed counterpart goes red), both sides carry the language
+ *      switcher, and the structural signatures match one to one — heading
+ *      depths in order, fenced code blocks VERBATIM (info string + content),
+ *      table column counts, list kinds, and every link target except the
+ *      switcher itself.
+ *   3. `excluded` files (generated docs, agent instructions, the bilingual
+ *      terminology table) have no `.zh.md` and no `.i18n.yaml` at all.
+ *
+ * What it deliberately does NOT check is translation quality or which side
+ * is "right": a green gate means the pair was confirmed consistent at these
+ * exact contents, not that the confirmation was sound — accuracy,
+ * terminology, and tone are the human reviewer's half of the contract
+ * (docs/i18n/translation-rules.md).
+ *
+ * Blob hashes, not commit hashes, so a pair edited in the same PR verifies
+ * without any history lookup: consistency is a pure content comparison,
+ * computed here directly (sha1 of `blob <size>\0<content>`) without spawning
+ * git. The recorded hash also recovers the last-confirmed text of either
+ * side (`git cat-file -p <hash>`) for diff-based minimal updates.
+ *
+ * Run: `tsx scripts/verify-translation-pairing.ts` — or with `--list` to
+ * print the pairing state of every in-scope document as a work list (always
+ * exits 0), or with `--write` to (re)record both hashes for every complete
+ * pair after you have brought the two sides back in line (the resulting
+ * yaml diff is the reviewable act of confirming consistency).
+ */
+
+import { createHash } from 'node:crypto'
+import { existsSync, readFileSync, writeFileSync } from 'node:fs'
+import { basename, join, resolve } from 'node:path'
+import { glob } from 'node:fs/promises'
+import { fromMarkdown } from 'mdast-util-from-markdown'
+import { gfmFromMarkdown } from 'mdast-util-gfm'
+import { gfm } from 'micromark-extension-gfm'
+import type { Nodes } from 'mdast'
+
+const root = resolve(import.meta.dirname, '..')
+const listMode = process.argv.includes('--list')
+const writeMode = process.argv.includes('--write')
+
+/** Scope of the bilingual contract: the root README and the docs tree. */
+const SCOPE_PATTERNS = ['README.md', 'README.zh.md', 'README.i18n.yaml', 'docs/**/*.md', 'docs/**/*.i18n.yaml']
+
+/** The enforcement frontier and the never-paired set (docs/i18n/README.md § Scope). */
+interface Manifest {
+  required: string[]
+  excluded: string[]
+}
+const manifest = JSON.parse(readFileSync(join(root, 'scripts/translation-pairing.manifest.json'), 'utf8')) as Manifest
+
+/**
+ * An excluded entry ending in `/` excludes the whole directory. The trailing
+ * slash IS the path boundary — `docs/tool-catalog/` cannot prefix-match a
+ * sibling like `docs/tool-catalog-notes/x.md` — so directory entries in the
+ * manifest must keep their trailing slash.
+ */
+function isExcluded(file: string): boolean {
+  return manifest.excluded.some(entry => (entry.endsWith('/') ? file.startsWith(entry) : file === entry))
+}
+
+/** Full git blob hash (what `git hash-object` prints). */
+function blobHash(content: Buffer): string {
+  const hash = createHash('sha1')
+  hash.update(`blob ${content.byteLength}\0`)
+  hash.update(content)
+  return hash.digest('hex')
+}
+
+/** The three paths of a pair, derived from the English-file path. */
+function pairPaths(source: string): { zh: string; meta: string } {
+  return { zh: source.replace(/\.md$/, '.zh.md'), meta: source.replace(/\.md$/, '.i18n.yaml') }
+}
+
+const META_LINE = /^([^:#]+\.md): ([0-9a-f]{40})$/
+
+/** Parse a `foo.i18n.yaml` consistency record: basename → recorded blob hash. */
+function parseMeta(content: string): Map<string, string> | undefined {
+  const out = new Map<string, string>()
+  for (const line of content.split('\n')) {
+    if (line === '' || line.startsWith('#')) continue
+    const match = META_LINE.exec(line)
+    if (!match?.[1] || !match[2]) return undefined
+    out.set(match[1], match[2])
+  }
+  return out
+}
+
+/** Render a `foo.i18n.yaml` consistency record. */
+function renderMeta(source: string, sourceHash: string, zh: string, zhHash: string): string {
+  return [
+    '# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each',
+    '# side as of the last confirmed-consistent state. Both languages carry equal authority;',
+    '# after editing either side, bring the other along and re-record with:',
+    '#   pnpm run verify-translation-pairing --write',
+    `${basename(source)}: ${sourceHash}`,
+    `${basename(zh)}: ${zhHash}`,
+    '',
+  ].join('\n')
+}
+
+/**
+ * The structural signature the two sides must share, as ordered sequences so
+ * a swap or a level change is caught, not just a count change. Prose is
+ * deliberately absent: the gate checks shape, never wording.
+ */
+interface Signature {
+  /** Heading depths in document order (h2 → 2). */
+  headings: number[]
+  /** Fenced code blocks verbatim: info string + content, in order. */
+  code: string[]
+  /** Column count of each table, in order. */
+  tables: number[]
+  /** Each list's kind (ordered vs bullet), in order. */
+  lists: string[]
+  /** Every link target in order, the language switcher's excluded. */
+  links: string[]
+}
+
+/** Whether the tree contains a link to exactly `target` (the switcher check). */
+function linksTo(tree: Nodes, target: string): boolean {
+  let found = false
+  const visit = (node: Nodes): void => {
+    if (node.type === 'link' && node.url === target) found = true
+    if ('children' in node) for (const child of node.children) visit(child)
+  }
+  visit(tree)
+  return found
+}
+
+/** Collect the structural signature, skipping links to `switcherTarget`. */
+function signatureOf(tree: Nodes, switcherTarget: string): Signature {
+  const sig: Signature = { headings: [], code: [], tables: [], lists: [], links: [] }
+  const visit = (node: Nodes): void => {
+    switch (node.type) {
+      case 'heading':
+        sig.headings.push(node.depth)
+        break
+      case 'code':
+        sig.code.push(`\`\`\`${node.lang ?? ''}${node.meta ? ` ${node.meta}` : ''}\n${node.value}`)
+        break
+      case 'table':
+        sig.tables.push(node.children[0]?.children.length ?? 0)
+        break
+      case 'list':
+        sig.lists.push(node.ordered ? 'ordered' : 'bullet')
+        break
+      case 'link':
+        if (node.url !== switcherTarget) sig.links.push(node.url)
+        break
+      default:
+        // Every other node kind is prose or container — not part of the signature.
+        break
+    }
+    if ('children' in node) for (const child of node.children) visit(child)
+  }
+  visit(tree)
+  return sig
+}
+
+/** Render a signature element for an error message, truncated for readability. */
+function show(value: string | number | undefined): string {
+  if (value === undefined) return 'nothing'
+  const text = JSON.stringify(value)
+  return text.length > 72 ? `${text.slice(0, 72)}…` : text
+}
+
+/** First divergence between two signatures, as messages; empty when identical. */
+function signatureDiff(source: Signature, zh: Signature): string[] {
+  const out: string[] = []
+  const fields: [string, (string | number)[], (string | number)[]][] = [
+    ['heading (depth)', source.headings, zh.headings],
+    ['code block', source.code, zh.code],
+    ['table (column count)', source.tables, zh.tables],
+    ['list (kind)', source.lists, zh.lists],
+    ['link target', source.links, zh.links],
+  ]
+  for (const [field, s, z] of fields) {
+    const length = Math.max(s.length, z.length)
+    for (let i = 0; i < length; i++) {
+      if (s[i] !== z[i]) {
+        out.push(`${field} #${i + 1} diverges between the pair: ${show(s[i])} vs ${show(z[i])}`)
+        break
+      }
+    }
+  }
+  return out
+}
+
+function parse(content: string): Nodes {
+  return fromMarkdown(content, { extensions: [gfm()], mdastExtensions: [gfmFromMarkdown()] })
+}
+
+// Enumerate the scope once.
+const files = new Set<string>()
+for (const pattern of SCOPE_PATTERNS) {
+  for await (const match of glob(pattern, { cwd: root })) files.add(match)
+}
+const translations = [...files].filter(f => f.endsWith('.zh.md')).sort()
+const metas = [...files].filter(f => f.endsWith('.i18n.yaml')).sort()
+const sources = [...files].filter(f => f.endsWith('.md') && !f.endsWith('.zh.md')).sort()
+
+// --write: (re)record both hashes for every complete pair, creating missing records.
+if (writeMode) {
+  let written = 0
+  for (const source of sources) {
+    if (isExcluded(source)) continue
+    const { zh, meta } = pairPaths(source)
+    if (!existsSync(join(root, zh))) continue
+    const record = renderMeta(source, blobHash(readFileSync(join(root, source))), zh, blobHash(readFileSync(join(root, zh))))
+    if (existsSync(join(root, meta)) && readFileSync(join(root, meta), 'utf8') === record) continue
+    writeFileSync(join(root, meta), record)
+    console.log(`verify-translation-pairing: recorded ${meta}`)
+    written++
+  }
+  console.log(`verify-translation-pairing: ${written} record(s) written; run the check to validate the pairs.`)
+  process.exit(0)
+}
+
+const errors: string[] = []
+const state = new Map<string, 'ok' | 'out-of-sync' | 'missing'>()
+
+// 1. Required pairs exist.
+for (const req of manifest.required) {
+  if (!existsSync(join(root, req))) {
+    errors.push(`${req}: listed in translation-pairing.manifest.json \`required\` but the file does not exist`)
+    continue
+  }
+  const { zh } = pairPaths(req)
+  if (!existsSync(join(root, zh))) {
+    errors.push(`${req}: required to have a translation, but ${zh} does not exist`)
+    state.set(req, 'missing')
+  }
+}
+
+// 2. Every pair that exists at all is complete and consistent. Anchor on the
+// union of .zh.md files and .i18n.yaml records so a half-deleted pair is
+// caught from either remnant.
+const pairAnchors = new Set<string>()
+for (const zh of translations) pairAnchors.add(zh.replace(/\.zh\.md$/, '.md'))
+for (const meta of metas) pairAnchors.add(meta.replace(/\.i18n\.yaml$/, '.md'))
+
+for (const source of [...pairAnchors].sort()) {
+  const { zh, meta } = pairPaths(source)
+  const have = { source: existsSync(join(root, source)), zh: existsSync(join(root, zh)), meta: existsSync(join(root, meta)) }
+
+  if (isExcluded(source)) {
+    if (have.zh) errors.push(`${zh}: ${source} is excluded from pairing (generated or bilingual-by-construction); this translation must not exist`)
+    if (have.meta) errors.push(`${meta}: ${source} is excluded from pairing; this consistency record must not exist`)
+    continue
+  }
+  const missing = Object.entries(have).filter(([, ok]) => !ok).map(([k]) => (k === 'source' ? source : k === 'zh' ? zh : meta))
+  if (missing.length > 0) {
+    errors.push(`${source}: incomplete pair — missing ${missing.join(', ')} (pairs merge whole: both languages plus the .i18n.yaml record)`)
+    continue
+  }
+
+  const sourceContent = readFileSync(join(root, source))
+  const zhContent = readFileSync(join(root, zh))
+  const record = parseMeta(readFileSync(join(root, meta), 'utf8'))
+  if (!record || record.size !== 2 || !record.has(basename(source)) || !record.has(basename(zh))) {
+    errors.push(`${meta}: malformed consistency record (expected exactly \`${basename(source)}: <40-hex>\` and \`${basename(zh)}: <40-hex>\`)`)
+    continue
+  }
+
+  let consistent = true
+  for (const [file, content] of [[source, sourceContent], [zh, zhContent]] as const) {
+    const current = blobHash(content)
+    if (record.get(basename(file)) !== current) {
+      errors.push(`${file}: out of sync — content no longer matches the pair's last confirmed-consistent state in ${meta} (bring the other side along, then re-record with --write)`)
+      consistent = false
+    }
+  }
+  if (!consistent) {
+    state.set(source, 'out-of-sync')
+    continue
+  }
+
+  const sourceTree = parse(sourceContent.toString('utf8'))
+  const zhTree = parse(zhContent.toString('utf8'))
+  if (!linksTo(zhTree, basename(source))) {
+    errors.push(`${zh}: missing language switcher — no link to ${basename(source)}`)
+  }
+  if (!linksTo(sourceTree, basename(zh))) {
+    errors.push(`${source}: missing language switcher — no link back to ${basename(zh)}`)
+  }
+  for (const divergence of signatureDiff(signatureOf(sourceTree, basename(zh)), signatureOf(zhTree, basename(source)))) {
+    errors.push(`${source} ↔ ${zh}: ${divergence}`)
+  }
+  if (!state.has(source)) state.set(source, 'ok')
+}
+
+// Complete the state map for --list: any in-scope, non-excluded document with no pair yet is backlog.
+for (const source of sources) {
+  if (!isExcluded(source) && !state.has(source)) state.set(source, 'missing')
+}
+
+if (listMode) {
+  const order = { 'out-of-sync': 0, missing: 1, ok: 2 } as const
+  const rows = [...state.entries()].sort((a, b) => order[a[1]] - order[b[1]] || a[0].localeCompare(b[0]))
+  for (const [file, status] of rows) {
+    const required = manifest.required.includes(file)
+    console.log(`${status.padEnd(11)} ${file}${status === 'missing' ? (required ? '  (required)' : '  (backlog)') : ''}`)
+  }
+  const counts = { 'ok': 0, 'out-of-sync': 0, 'missing': 0 }
+  for (const status of state.values()) counts[status]++
+  console.log(`verify-translation-pairing: ${counts.ok} ok, ${counts['out-of-sync']} out-of-sync, ${counts.missing} missing (of ${state.size} in scope)`)
+  process.exit(0)
+}
+
+if (errors.length === 0) {
+  console.log(`verify-translation-pairing: ${pairAnchors.size} pair(s) checked against ${manifest.required.length} required, all consistent.`)
+  process.exit(0)
+}
+
+console.error('verify-translation-pairing: bilingual pairing contract violated (see docs/i18n/README.md):')
+for (const message of errors) console.error(`  ${message}`)
+process.exit(1)