Rewrite from TypeScript to Go

Complete rewrite of the Freebee Matrix bot as GogoBee using mautrix-go.

- E2EE with goolm (pure Go, no CGo/libolm) and cross-signing bootstrap
- 35+ plugins with dependency injection and ordered registration
- SQLite storage via modernc.org/sqlite (no CGo)
- Scheduler via robfig/cron for WOTD, holidays, birthdays, releases, etc.
- Optional LLM integration (Ollama) for sentiment, profanity, roasts, vibes
- Threaded trivia, three-tier profanity tracking, WOTD usage verification
- Multi-country holiday support with deduplication
- Quadratic XP curve, configurable bot display name, encrypted DMs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -1,9 +1,9 @@
 services:
-  freebee:
+  gogobee:
     build: .
     restart: unless-stopped
     env_file: .env
     volumes:
-      # CRITICAL: The crypto/ subdirectory contains the bot's device identity.
-      # Losing it means the bot must re-verify in all encrypted rooms.
+      # Contains the SQLite database (bot state + crypto store) and device.json.
+      # Losing this means the bot must re-verify in all encrypted rooms.
       - ./data:/app/data