feat: add Python CI tests and improve MCP developer experience

[Markolissimo]

Summary

This PR adds Python test coverage to CI and improves the MCP developer experience with Windows compatibility, version reporting, and better tooling.

Changes

1. CI: Python Test Job

• Added python-test job to .github/workflows/ci.yml
• Installs and tests both core and tools packages
• Runs in parallel with Node tests
• Blocks merge if Python tests fail

Fixes: #116

2. MCP Scripts: Windows Compatibility

• Enhanced core/setup_mcp.py and core/verify_mcp.py for Windows
• Conditional ANSI color support (graceful degradation without colorama)
• Platform-aware command suggestions (PowerShell vs bash)
• Better error messages with stdout/stderr capture

Fixes: #117, #118

3. MCP Test Script: CLI Flags

• Created scripts/test-mcp.ts with CLI argument parsing
• Supports --list-tools, --tool <name>, --category <cat>, --help
• Backward compatible (no flags = default test suite)

Fixes: #120

4. MCP Smoke Test

• Added core/tests/test_mcp_server.py with import/structure tests
• Skips if MCP dependencies unavailable
• Runs in CI via new Python test job

Fixes: #121

Testing

• All Python tests pass locally (pytest core/tests tools/tests)
• MCP scripts tested on Windows 11 PowerShell
• MCP test script tested with all CLI flags
• CI workflow syntax validated

Checklist

• Follows Conventional Commits
• Added tests for new functionality
• Documentation updated (inline comments, help text)
• No breaking changes

[RichardTang-Aden]

We did a major refactor today. Can you merge from main and see if the tests can work again?