refactor: large codebase cleanup - consolidate schemas, migrate to Drizzle ORM, extract frontend components, modernize Docker builds

- Consolidate all DB schema definitions into packages/shared as single source of truth
- Migrate backend from raw SQL to Drizzle ORM across all modules
- Extract frontend inline UI into separate component files
- Refactor discord-gateway circuitBreaker into conversationState + moderationState
- Convert messageStore to Proxy singleton pattern
- Add validateBody/validateQuery middleware + Zod schemas for API endpoints
- Modernize Docker builds with multi-stage + pnpm deploy
- Migrate CI/CD from deployment to image-based pipeline
- Remove 60+ unused/dead files (~15K lines)
- Update color scheme from sky-blue to teal-cyan
- Move DB connection management to @bete/shared/database

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/shared/src/config/index.ts

@@ -22,6 +22,16 @@ export const configSchema = z
     MONITOR_GUILD_ID: z.string().min(1).optional(),
     TEXT_GUILD_ID: z.string().min(1).optional(),
     TEXT_CHANNEL_ID: z.string().min(1).optional(),
+    EXCLUDED_CHANNEL_IDS: z
+      .string()
+      .default("")
+      .transform((v) => v.split(",").filter(Boolean))
+      .describe("Channel IDs to exclude from capture"),
+    EXCLUDED_THREAD_IDS: z
+      .string()
+      .default("")
+      .transform((v) => v.split(",").filter(Boolean))
+      .describe("Thread IDs to exclude from capture"),
 
     // ── Legacy voice ─────────────────────────────────────────────────────
     VOICE_GUILD_ID: z.string().min(1).optional(),