(CODUX-226) Finalize dashboard internationalization integration artifacts

[numnx]

🧩 Task: Finalize dashboard internationalization integration artifacts

Automated task PR opened by Code UX for T29.

📋 Summary

Sprint: Sprint 226 · Dashboard internationalization foundation · Task: T29

Establish a dashboard-only English/German internationalization system with persisted locale selection, complete German coverage across every dashboard route and overlay except English documentation bodies, locale-aware formatting, and automated coverage checks while preserving backend contracts and runtime/API-authored messages verbatim.

🤖 Model & Provider

Provider	Codex CLI
Model	gpt-5.6-sol

⏱️ Timing

Started	2026-07-14 22:23:52 UTC
Finished	2026-07-14 22:31:33 UTC
Duration	7m 41s

📊 Token Usage

Metric	Value
Input tokens	166,921
Cached input tokens	4,440,832
Output tokens	7,435
Total tokens	4,615,188
Invocations	1
Tool calls	29
Active time	7m 18s

Included usage estimate (subscription/local login): $3.28

✅ QA Review

⏳ QA review runs after this PR is opened. Check the task card in the dashboard for the outcome once it lands.

📝 Full Task Prompt

## Objective
Resolve the remaining integrated dashboard internationalization verification failures so the sprint can advance.

## Scope
- Regenerate generated public documentation artifacts from the final canonical `docs-web/` Markdown sources.
- Repair the stale `/tasks` landmark assertion in `tests/e2e/navigation/dashboard-i18n.spec.ts`.

## Requirements
1. Run `pnpm run sync:docs-web` so generated MDX, routes, and registry artifacts match the final canonical dashboard internationalization documentation.
2. Ensure `pnpm run check:docs-web` passes and the generated pages preserve the documented English/German behavior, persistence, HTML `lang`, locale formatting, lazy-loading caveats, and runtime/API/user-content boundaries.
3. Align the `/tasks` E2E route landmark with the actual page-level German heading `Aufgaben`; retain separate coverage for the nested `Aufgabenboard` region where appropriate.
4. Do not change dashboard behavior, backend/API contracts, persisted locale semantics, or authored/runtime content boundaries.

## Verification
- `pnpm run sync:docs-web`
- `pnpm run check:docs-web`
- `pnpm exec playwright test tests/e2e/navigation/dashboard-i18n.spec.ts --project=navigation`
- `pnpm run check:dashboard-i18n`
- `pnpm run quality:guardrails`
- `pnpm run test:dashboard`
- `pnpm run lint`
- `pnpm run build`

🌿 Branch Info

Base: feature/CODUX-226-dashboard-internationalization-foundation
Head: task/feature-codux-22-t29-codex-0bf355eb-mrl7x9nf

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🤖 Generated by Code UX