fix: Handle ZeroVectorError in embeddings

- Modified `generateEmbeddings` to filter out zero vectors.
- Modified `findMostRelevantChunks` to handle questions with no common words and to filter out results with zero similarity.
- Added tests for `embeddings.ts` to cover these cases.
- Bump version to 0.0.5.

chore: Bump version to 0.0.4

release: v0.0.3

fix: v0.0.2

Release v0.0.1: PagePilot with comprehensive test suite

🚀 First release of PagePilot - Multi-language development assistant

✨ Features:
- Multi-language VS Code Chat participant (English/Portuguese)
- Smart context loading from URLs (/load command)
- Persistent context storage between sessions
- Integration with VS Code Language Model Chat
- Real-time response streaming

🧪 Testing:
- 96.6% test coverage with 88 passing tests
- Comprehensive test suites for all functionality
- Performance and integration testing
- Error handling and edge cases covered

📦 Ready for production use in VS Code 1.105+