🧹 Code Health: Remove leftover dev-only console.error logs

[kuasar-mknd]

🎯 What: Removed leftover dev-only console.error logs wrapped inside if (import.meta.env.DEV) from catch blocks within src/pages/project/[slug].astro, src/pages/[slug].astro, and src/components/common/Footer.astro.

💡 Why: These logging blocks were originally meant for dev purposes to debug clipboard fallback or badge API loading, but were left scattered in error catch blocks. Removing them simplifies the code by changing some exceptions into empty optional catch blocks since the error variables are no longer used. This creates a cleaner and more maintainable production-ready codebase without affecting functionality.

✅ Verification:

1. Ran format and lint checks (pnpm run check).
2. Ran the unit test suite (bun test src/ tests/) which passed.
3. Verified the specific .astro files via cat to ensure modifications only touched the targeted code.
4. Received code review which confirmed the patch correctness and logic.

✨ Result: Improved maintainability by reducing code noise. The codebase now safely ignores expected errors in these specific browser API/fallback flows without cluttering development or staging consoles.

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PR created automatically by Jules for task 9567459811439840018 started by @kuasar-mknd

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