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>

services/frontend/src/lib/api/media.ts

@@ -0,0 +1,12 @@
+import type { MediaState } from "@/lib/types";
+import { api } from "./client";
+
+export const mediaApi = {
+  getStatus: () => api.get<MediaState>("/api/media/status"),
+  queue: (source: string, mode: string) =>
+    api.post<MediaState>("/api/media/queue", { source, mode }),
+  skip: () => api.post<MediaState>("/api/media/skip", {}),
+  stop: () => api.post<MediaState>("/api/media/stop", {}),
+  volume: (volume: number) =>
+    api.post<MediaState>("/api/media/volume", { volume }),
+};