fix(gui): complete English i18n, keep only en/nl

[OnlineChef]

Summary

• Adopt canonical gui/src/i18n/en.ts and keep only en/nl locales (drops de/ja/ko/ru/zh — 8.3k regels minder).
• Herstelt de nl-locale op dev (die was bij een eerdere merge verdwenen) met Nederlands als Joep-facing default.
• Trim locale switches in shared.ts, formatUptime.ts, QuotaBars.tsx; language switcher toont alleen Nederlands / English.

Retarget note

Oorspronkelijk per ongeluk tegen main geopend. Branch is opnieuw gebaseerd op dev (conflictoplossing: dev's nieuwere lockfile behouden, locale-deletes doorgezet). De docs-alinea over de Bun CLI zat al op dev en is weggevallen als no-op.

Test plan (gedraaid op deze branch)

• cd gui && bunx tsc -b — 0 errors
• cd gui && bunx --bun eslint . — 0 errors
• bun run test — 6213 pass / 0 fail
• Spot-check: language switcher biedt alleen Nederlands / English
• Verkeer / Systeem / Modellen renderen onder beide locales

Summary by CodeRabbit

• New Features
  • Added English labels and messages for startup repair, diagnostics, storage management, account pools, API workspace views, and fleet monitoring.
• Changes
  • Reduced available interface languages to English and Dutch; Dutch is now the default when no supported language is detected.
  • Removed uptime translations for several previously supported languages.
• Bug Fixes
  • Improved Windows test reliability by retrying only after specific runtime crashes.

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[github-actions]

✅ Target branch corrected

This pull request now targets dev.

The [WRONG BRANCH] title prefix has been removed. The pull request has been marked ready for review again.

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Review details

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 948be81e-652d-4cad-ae1c-74280b6fed73

📥 Commits

Reviewing files that changed from the base of the PR and between 51ee42e and c03bf02.

📒 Files selected for processing (1)

• .github/workflows/ci.yml

📝 Walkthrough

Walkthrough

The GUI now supports English and Dutch only, adds English strings for new workflows and dashboards, and removes obsolete locale mappings and dictionaries. CI retries Windows tests after detected Bun crashes. Issue triage assembles prompts through a grouped heredoc command.

Changes

GUI localization updates

Layer / File(s)	Summary
Reduce locale support and locale mappings gui/src/i18n/shared.ts, gui/src/i18n/de.ts, gui/src/i18n/ko.ts, gui/src/i18n/zh.ts, gui/src/i18n/ru.ts, gui/src/i18n/ja.ts, gui/src/formatUptime.ts, gui/src/components/QuotaBars.tsx	Locale registration now contains English and Dutch. The removed locale modules and locale-specific quota and uptime mappings are no longer used.
Add startup and diagnostics translations gui/src/i18n/en.ts	English strings cover startup repair, memory drain-and-restart states, delegation guidance, model availability, and subagent workspace controls.
Add usage and storage translations gui/src/i18n/en.ts	English strings cover proxy and provider usage, request-quality metrics, quarantine and restoration, cleanup, and automatic cleanup policies.
Add provider, workspace, and fleet translations gui/src/i18n/en.ts	English strings cover API-key transport, account pooling and pausing, API-key workspaces, Claude settings, fleet navigation, and live traffic states.

Windows test retry

Layer / File(s)	Summary
Handle Windows Bun crashes .github/workflows/ci.yml	Windows tests capture output and retry once when the failure contains Bun has crashed. Other failures retain their original exit status.

Issue triage prompt generation

Layer / File(s)	Summary
Assemble the triage prompt .github/workflows/issue-triage.yml	The workflow writes the prompt template and current and existing issue JSON through one grouped heredoc command.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Possibly related PRs

• OnlineChefGroep/opencodex#35: Shares substantial locale-removal changes in the same GUI files.
• OnlineChefGroep/opencodex#32: Contains earlier i18n restoration changes that this PR partially removes.
• OnlineChefGroep/opencodex#13: Overlaps with locale handling and Dutch support in the same GUI files.

Suggested reviewers: lidge-jun, wibias

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main GUI localization change: completing English i18n and retaining only English and Dutch.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/gui-en-i18n-keys

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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.github/workflows/ci.yml:
- Line 88: Update the workflow step containing the matrix.os check to pass
matrix.os through the step’s env block, then compare the quoted environment
variable in the Bash condition instead of embedding the template expression in
executable shell code. Preserve the existing non-Windows behavior and obtain
explicit security review for this .github workflow change.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 4ab54aed-3002-4827-b42b-1134fda6e094

📥 Commits

Reviewing files that changed from the base of the PR and between dfc8543 and 51ee42e.

📒 Files selected for processing (2)

• .github/workflows/ci.yml
• .github/workflows/issue-triage.yml