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>

docker-compose.serial.yml

@@ -0,0 +1,9 @@
+# Docker Compose override for serial connection
+# Usage: docker compose -f docker-compose.yml -f docker-compose.serial.yml up -d
+
+services:
+  meshai:
+    devices:
+      - /dev/ttyUSB0:/dev/ttyUSB0
+    # May need privileged for some serial adapters
+    # privileged: true