feat(dashboard): implement granular Suspense boundaries for immediate…

[realtushartyagi]

Description

Wrap the heavy server-component data fetchers with a React <Suspense> boundary so that the application shell renders instantly and specific dashboard widgets show skeleton loaders until their respective promises resolve.

Fixes #5868

Pillar

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

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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[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	3628.51 KB	3628.47 KB	+0.04 KB (+0.00%)
Total CSS	284.92 KB	284.92 KB	0 B

[Aamod007]

Difficulty: intermediate – Splits page.tsx into DashboardContent async component with Suspense wrapper, updates 5 test cases to unwrap Suspense tree structure.

Quality: clean – Proper React 18 pattern, maintains functionality.

Type: performance – Enables granular streaming for faster initial page load.

Great perf improvement!

[github-actions]

🎉 Congratulations @realtushartyagi! Your PR has been successfully merged. 🚀

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