Audit docs API search anchors

Objective: Audit docs API search anchors and make docs search group API-reference pages, docs API sections, and ordinary docs results through a consistent source-backed signal.

Completion threshold:

• Every docs source page is read by a static audit.
• /docs/footnote#apifootnoteduplicatedefinitions is tagged as a docs API section.
• Ordinary docs headings such as /docs/installation/react#create-your-first-editor are not tagged as docs API sections.
• Browser search for duplicate definitions shows api.footnote.duplicateDefinitions under Docs API Sections.

Verification surface:

• apps/www/src/app/api/search/route.ts
• apps/www/src/lib/search-result-groups.ts
• apps/www/src/app/api/search/route.test.ts
• apps/www/src/lib/search-result-groups.test.ts
• Browser proof on http://localhost:3002/docs/footnote

Constraints:

• Do not rename or rewrite docs headings for this bug fix.
• Preserve public docs anchors.
• Do not add client-side API-symbol guessing.
• Do not commit, push, or open a PR.

Boundaries:

• Source owner: the search API builds result metadata from Fumadocs source pages.
• UI owner: command-menu grouping consumes the section: "docsApi" result metadata.
• Non-goals: docs prose normalization, API reference page redesign, and unrelated search ranking changes.

Blocked condition: No remaining blocker. Lint has a repo-level parser/config failure recorded under verification evidence.

Start Gates:

Gate	Applies	Evidence
Source read	yes	Read search route, grouping helper, focused tests, Fumadocs structure output, and footnote docs structure.
User scope	yes	User rejected regex/hash guessing and asked for a cleaner consistent approach.
Browser required	yes	App/docs search behavior changed, so localhost Browser proof was required.
Release artifact	no	App docs search behavior only; no package release artifact.
PR or tracker	no	User did not request commit, PR, or tracker sync.

Work Checklist:

• Objective, threshold, verification surface, constraints, boundaries, and blocked condition are recorded.
• Root cause is recorded: search grouping could not infer plugin-doc API anchors from URL hashes reliably.
• Implementation uses the right ownership boundary: the search API tags source-backed docs API section results.
• Client grouping no longer guesses API symbols or hash names.
• Public docs anchors are preserved.
• Every docs source page was read by the static audit.
• Focused tests cover API reference pages, docs API sections, ordinary docs headings, CN fallback search, and frontmatter exclusion.
• Dev server was started on http://localhost:3002.
• Browser proof used the approved in-app Browser.
• Lint caveat is recorded.
• No commit, push, PR, or tracker sync was performed.

Completion Gates:

Gate	Applies	Evidence
Static docs audit	yes	Read 257 source pages, 2344944 bytes; tagged 714 docs API anchors; footnote API and transform anchors included; ordinary React installation heading excluded.
Focused tests	yes	bun test src/lib/search-result-groups.test.ts src/app/api/search/route.test.ts passed: 11 tests, 19 expects.
Typecheck	yes	pnpm --filter www typecheck passed, including source build, docs source parity, registry source check, and TS checks.
Whitespace diff check	yes	git diff --check -- ... passed for the touched files.
HTTP route proof	yes	curl /api/search?query=duplicate%20definitions&locale=en returned /docs/footnote#apifootnoteduplicatedefinitions with section: "docsApi".
Browser proof	yes	In-app Browser search on /docs/footnote with duplicate definitions showed api.footnote.duplicateDefinitions under Docs API Sections and Footnote under Documentation.
Browser console/network	yes	Behavior proved; browser log buffer still had stale unrelated module-resolution errors from earlier failed page loads.
Lint	caveat	pnpm --filter www lint:fix fails repo-wide before this patch due ESLint parser/config errors on generated files and TS syntax, plus one pre-existing hooks warning.

Phase / pass table:

Phase	Status	Evidence	Next
Intake and source read	done	Search route, grouping helper, tests, Fumadocs structure, and docs headings inspected.	none
Implementation	done	Search API tags docs API sections with result metadata; client groups by metadata.	none
Verification	done	Focused tests, typecheck, static audit, HTTP proof, and Browser proof completed.	none
PR / tracker sync	done	N/A: no PR or tracker requested.	none
Closeout	done	Plan updated with evidence and caveats.	none

Findings:

• Renaming docs headings would be the wrong fix for this bug: it would churn docs and risk breaking anchors. The cleaner boundary is metadata from the search API.

Decisions and tradeoffs:

• Chose source-backed tagging over heading rewrites.
• Preserved existing docs structure and public URLs.
• Kept the client grouping small and dumb.

Implementation notes:

• /docs/api/** remains API Reference.
• Search results tagged with section: "docsApi" group under Docs API Sections.
• Ordinary docs results remain Documentation.
• Raw frontmatter is stripped before indexing so route/title metadata is not searchable body text.

Review fixes:

• Removed client-side API symbol and hash regexes.
• Added route tests for footnote API anchors and normal-heading exclusion.
• Added grouping tests for metadata-backed docs API sections.

Error attempts:

Error / failed attempt	Count	Resolution
Earlier client-side hash and symbol regex classification was too messy	1	Replaced with search API metadata.
Browser selected tab was stuck on an old connection-refused data URL	1	Opened a fresh in-app Browser tab and verified localhost there.
Browser text fill failed because the virtual clipboard is unavailable	1	Used Browser keypress events to enter the search query.
Lint failed repo-wide	1	Recorded as repo-level ESLint parser/config caveat.

Verification evidence:

• bun test src/lib/search-result-groups.test.ts src/app/api/search/route.test.ts: 11 pass, 0 fail, 19 expects.
• pnpm --filter www typecheck: passed.
• Static audit: { filesRead: 257, bytesRead: 2344944, pagesChecked: 257, docsApiAnchorCount: 714, includesFootnote: true, includesFootnoteTransform: true, excludesNormalHeading: true, searchIncludesFootnote: true, searchNormalHeadingUntagged: true }.
• HTTP proof: /api/search?query=duplicate%20definitions&locale=en returned /docs/footnote#apifootnoteduplicatedefinitions with section: "docsApi".
• Browser proof: /docs/footnote search input duplicate definitions; api.footnote.duplicateDefinitions appears under Docs API Sections; Footnote appears under Documentation.
• Lint caveat: pnpm --filter www lint:fix fails on existing repo-wide ESLint parser/config problems before this diff.

Reboot status: Complete for the search grouping bug. Dev server remains running at http://localhost:3002.

Open risks:

• Existing top-level docs headings are still stylistically inconsistent. That is a docs-normalization task, not required for this search grouping fix.
• Browser log buffer contains stale unrelated module-resolution errors from earlier failed page loads; the target search behavior itself is verified.