docs(ui): replace 49 hand-rolled docs.*.tsx thin routes with one dynamic docs.$slug.tsx route

[JSONbored]

Summary

Every docs page carried an identical hand-rolled TanStack route file: a loader calling getDocPage, head/og meta duplicating the .mdx frontmatter's own title/description, and the same DocsPage + Suspense/LoadingState body. Adding a page meant touching 5+ files and regenerating the route tree; two tests pinned the route-file count and had to be bumped on every addition.

• One dynamic docs.$slug.tsx route replaces all 49 per-page files. title/description come from frontmatter (already did); eyebrow (the one real per-page datum, previously a hand-copied JSX prop) moves into frontmatter too, via a new required field in source.config.ts's page schema.
• docs.index.tsx (a real static page) and docs.fumadocs-spike-api-reference.tsx (a standalone Scalar widget, not DocsPage/MDX at all) stay as their own routes -- audited, neither is boilerplate this replaces.
• Every literal to="/docs/<slug>" Link across the app (nav sidebar, footer, header dropdown, home page, install flow, agents/miners/maintainers pages) now uses the typed to="/docs/$slug" params={{ slug }} form instead -- done properly with real params, not a type-erasing cast, including fixing two pre-existing as "/docs" casts in docs-nav.tsx/docs.index.tsx found along the way.
• docs.miner-coding-agent.tsx's three exported data arrays (asserted against by a test, unrelated to routing) moved to src/lib/miner-coding-agent-docs-data.ts; their test moved alongside them.
• The two route-file-count-pinning tests (docs-source-server-isolation, docs-routes-loading-state) now assert the single dynamic route's shape instead of a per-page count.
• Three test-only Link mocks (docs.ams-observability-callout, install, install.permissions) updated to interpolate $-params the same way the real router resolves them, so their href assertions stay faithful.

Closes #8151.

Test plan

• npm run --workspace apps/loopover-ui typecheck -- clean, zero errors (25 real type errors from the route collapse fixed with proper params, not casts).
• npm run --workspace apps/loopover-ui lint -- 0 errors (pre-existing repo-wide react-refresh/only-export-components warnings on route files, unrelated to this change).
• Full apps/loopover-ui test suite: 509/509 passing across 81 files.
• npm run docs:drift-check -- clean.
• npm run --workspace apps/loopover-ui build -- production build succeeds.
• Verified live in the browser: a real docs page (/docs/quickstart) renders correct title/eyebrow/description/MDX content; sidebar nav renders and highlights the active page; client-side navigation between docs pages works; a nonexistent slug renders a real 404 with a "Go home" link; the docs index (/docs) and the untouched Scalar API reference route (/docs/fumadocs-spike-api-reference) both still work.
• Touched paths are under apps/**, outside coverage.include, so Codecov does not gate this patch (per the issue's own Test Coverage Requirements note).

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	loopover-ui	32e8b17	Commit Preview URL Branch Preview URL	Jul 23 2026, 09:08 AM

[superagent-security]

Superagent didn't find any vulnerabilities or security issues in this PR.

[JSONbored]

Closing and reopening to force a fresh CI run against the latest commit (fixed a pre-existing whitespace issue in self-hosting-security.mdx that failed the first run's git diff --check) -- same GitHub API propagation lag seen earlier tonight on #8165/#8168.