test(qa): implement defensive runtime fault tolerance tests for DeploymentTracker

[Vagventure]

Description

Fixes #5883

This PR implements a robust defensive verification suite (DeploymentTracker.error_resilience.test.tsx) to make sure upstream API type drift or missing fields won't crash the dashboard.

• Null Property Handling: Confirms that when optional fields or text elements drop from the JSON payload (delivering null fields), the interface updates cleanly without breaking properties.
• Malicious Layout Containment: Validates that continuous, unspaced text blocks injected into name fields do not expand the card widths or displace adjacent metrics grids.
• Typo Degradation paths: Validates that unexpected runtime status tags fall back securely to a default standard view rather than stopping rendering operations.

Pillar

• 🎨 Pillar 1 — New Theme Design
• 📐 Pillar 2 — Geometric SVG Improvement
• 🕐 Pillar 3 — Timezone Logic Optimization
• 🛠️ Other (Error Resilience / QA infrastructure)

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., test(qa): ...).
• I have updated README.md if I added a new theme or URL parameter.
• I have starred 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.

[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	3649.55 KB	3649.55 KB	0 B
Total CSS	287.99 KB	287.99 KB	0 B