(CODUX-226) Translate the Overview dashboard

[numnx]

🧩 Task: Translate the Overview dashboard

Automated task PR opened by Code UX for T09.

📋 Summary

Sprint: Sprint 226 · Dashboard internationalization foundation · Task: T09

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 00:51:35 UTC
Finished	2026-07-14 01:07:26 UTC
Duration	15m 51s

📊 Token Usage

Metric	Value
Input tokens	513,572
Cached input tokens	19,593,728
Output tokens	49,992
Total tokens	20,157,292
Invocations	2
Tool calls	129
Active time	37m 55s

Included usage estimate (subscription/local login): $13.86

✅ 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
Provide complete German coverage for the Overview route and its cross-project telemetry components.

## Scope
- Create `dashboard/src/v2/i18n/messages/overview.ts`
- Edit `dashboard/src/v2/DashboardV2.tsx`
- Edit `HeaderStats.tsx`, `OverviewTelemetry.tsx`, `SourcesGrid.tsx`, and `TasksList.tsx`
- Edit `dashboard/src/v2/components/ui/SourceCell.tsx`, `SprintStreamRow.tsx`, and `SectionHeader.tsx`
- Edit dashboard presentation helpers in `dashboard/src/v2/lib/overview-stats.ts`, `overview-streams.ts`, `overview-telemetry-view-models.ts`, and `view-models.ts`
- Edit `dashboard/src/v2/hooks/use-overview-page-data.ts` and `use-overview-stream-actions.ts` only for dashboard-owned fallback copy
- Update Overview, header-stat, source-grid, task-list, and telemetry tests

## Implementation Requirements
1. Translate page headers, section landmarks, metric labels, source/task states, telemetry summaries, empty/loading/error fallbacks, action labels, screen-reader descriptions, and pluralized counts.
2. Replace hard-coded English number/date formatting with T01 locale formatters while preserving timestamp interpretation, ordering, and metric precision.
3. Keep project, sprint, task, branch, provider, model, repository, attention-item, and server error text verbatim.
4. Test German loading, empty, active, stale, failure, selected-project attention, and long-content states with live-region and responsive assertions.

## Constraints
- Do not change polling, realtime subscriptions, project selection, status precedence, or API payload projections.
- Do not edit shared shell components or project-management modals owned elsewhere.
- Do not translate runtime-authored attention descriptions or execution event messages.

## Verification
- Run focused Overview, HeaderStats, SourcesGrid, TasksList, and OverviewTelemetry tests.
- Run `pnpm run lint`.
- Run `pnpm run test:dashboard`.
- Run `pnpm run build`.
- Success means every static Overview surface changes with the locale while live data remains unchanged and correctly ordered.

🌿 Branch Info

Base: feature/CODUX-226-dashboard-internationalization-foundation
Head: task/feature-codux-22-t09-codex-7e3283b9-mrjwhaad

---

🤖 Generated by Code UX