fix: resolve architecture disconnects and codebase weaknesses

- Standardize MessageRecord types — single source of truth from @bete/shared
- Clean up config: remove unused GUILD_ID/TEXT_GUILD_ID/TEXT_CHANNEL_ID, fix WEBSERVER_PORT default (3001), remove default admin password
- Move mascot_chat_messages table to Drizzle schema with proper migration
- Remove runtime DDL (CREATE TABLE IF NOT EXISTS) from mascot-chat repository
- Remove phantom analytics/ module from documentation
- Add better-sqlite3 dependency to root devDependencies
- Replace 'as any' casts with proper type assertions across AI moderation
- Add error logging to silent catch blocks in LLM client
- Apply Biome formatting and import organization

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

services/frontend/package.json

@@ -12,6 +12,7 @@
     "format": "biome format --write src/"
   },
   "dependencies": {
+    "@bete/shared": "workspace:*",
     "@radix-ui/react-scroll-area": "^1.2.10",
     "@radix-ui/react-slot": "^1.2.4",
     "@radix-ui/react-tabs": "^1.1.13",