Fix Awaiting of setAlertConfig in CI/CD Alerts Route

[tamilr0727-ux]

Description

Fixes the POST handler in app/api/cicd/alerts/route.ts by awaiting the asynchronous setAlertConfig() operation before returning the API response.

Changes

• Added await to thesetAlertConfig()call.
• Ensured the API response is returned only after the alert configuration has been successfully persisted.
• Ensured failures from Redis/cache writes are caught by the route's existing error-handling logic.
• Prevented unhandled promise rejections from background setAlertConfig() calls.
• Added regression tests covering successful and failed configuration updates.

Verification

✅ vitest run passes successfully.
✅ Alert configuration writes are awaited.
✅ Persistence failures are correctly propagated to the API error handler.
✅ No unhandled promise rejections occur from setAlertConfig().

Fixes #9009

Pillar

• 🎨 Pillar 1 — New Theme Design
• 📐 Pillar 2 — Geometric SVG Improvement
• 🕐 Pillar 3 — Timezone Logic Optimization
• 🛠️ Other (Bug fix, refactoring, docs)

Visual Preview

Can Check in the Files Changed Section.

Checklist before requesting a review:

• I have read the CONTRIBUTING.md file.
• I have tested these changes locally (localhost:3000/api/streak?user=YOUR_USERNAME).
• I have run npm run format and npm run lint locally and resolved all errors (CI will fail otherwise).
• My commits follow the Conventional Commits format (e.g., feat(themes): ..., fix(calculate): ...).
• I have updated README.md if I added a new theme or URL parameter.
• I have started the repo.
• I have made sure that i have only one commit to merge in this PR.
• The SVG output matches the CommitPulse "premium quality" aesthetic standard (no raw elements, smooth animations, correct fonts).
• (Recommended) I joined the CommitPulse Discord community for contributor discussions, mentorship, and faster PR support.

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[retenta-bot]

This pull request addresses an important issue by ensuring that the alert configuration is properly awaited, preventing potential unhandled promise rejections. It also includes regression tests to cover both successful and failed updates, which aligns with our previous decisions to enhance error resilience and exception handling in API routes. Thank you for your contribution, and I look forward to your updates!

[github-actions]

📦 Next.js Bundle Size Report (Gzipped Sizes)

✨ No significant bundle size changes detected.

📊 Summary of Totals

Category	PR Size	Base Size	Difference
Total JS	4998.89 KB	4998.89 KB	0 B
Total CSS	354.18 KB	354.18 KB	0 B

[github-actions]

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