Initial commit: MeshAI - LLM-powered Meshtastic assistant

Features:
- Multi-backend LLM support (OpenAI, Anthropic, Google)
- Rolling summary memory for token optimization (~70-80% reduction)
- Per-user conversation history with SQLite persistence
- Bang commands (!help, !ping, !reset, !status, !weather)
- Meshtastic integration via serial or TCP
- Message chunking for mesh network constraints (150 char limit)
- Rate limiting to prevent network congestion
- Rich TUI configurator
- Docker support

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

requirements.txt

@@ -0,0 +1,8 @@
+meshtastic>=2.3.0
+pyyaml>=6.0
+aiosqlite>=0.19.0
+openai>=1.0.0
+anthropic>=0.18.0
+google-generativeai>=0.4.0
+rich>=13.0.0
+httpx>=0.25.0