🐙 chore: enhance CI/CD, versioning, and testing setup

This PR doesn’t add flashy features.
No rainbows. No unicorns.
But under the hood? We’ve just made the whole project significantly more mature, reliable, and ready-for-adulthood.

What’s changed?

✅ Cleaner version & description loading
Switched to importlib.metadata to read version and description directly from the installed package metadata.
No more hardcoded strings, no more TOML parsing hacks. Just Python, behaving as intended.

🧪 New test for UVX functionality
Because uvx is used in MCP clients, and we shouldn’t assume it just works.
Added a test to verify the app starts and responds correctly under uvx — closing a quiet but real blind spot.

🔧 CI/CD pipeline now runs on main — with auto-publish attempts
Every push to main triggers:

• Full test suite (via reusable 1_tests.yml) — only if there are .py file changes
• If tests pass: attempt release via 2_release.yml
  • Build and publish to PyPI 📦
  • Build and push Docker image 🐳

⚠️ No version checks. No clever diffing.
If the version already exists on PyPI? The upload fails — and that’s the point.
It means we forgot to bump the version.
So we fix it. Next time.

This is “fail-fast, learn-fast” packaging. No shame in the game — just faster feedback.

Why this matters:

• Less ceremony, more automation
• And yes — the robots now handle the boring stuff so we can focus on the fun stuff