Removed:
- LLM service (OpenRouter provider)
- Speech service (ElevenLabs TTS, Whisper STT)
- Parsing utilities (CSV, date, JSON, PDF, XML, YAML)
- Network utilities (fetchWithTimeout)
- Scheduling utilities (cron scheduler)
- HTML sanitization methods
- 17 unused dependencies

Changed:
- Rewrote README for clarity and conciseness
- Added .vscode/ to .gitignore