Implement a centralized logging system to improve debugging capabilities
and separate logging concerns from the Storage class.

- Add logger module with configurable debug/info levels
- Support runtime configuration via coder.verbose setting
- Provide OutputChannelAdapter for VS Code integration
- Add ArrayAdapter for isolated unit testing
- Include performance benchmarks in tests
- Maintain backward compatibility via Storage delegation
- Update all components to use centralized logger

The logger responds to configuration changes without requiring extension
restart and includes source location tracking for debug messages.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

…een without config

- Updated vitest from v0.34.6 to v3.2.4
- Fixed failing tests by replacing .toMatch() with .toThrowError() for rejected promise assertions
- All tests now pass with the updated vitest version

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>