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/components/ui/collapsible.tsx

@@ -1,21 +0,0 @@
-"use client";
-
-import { Collapsible as CollapsiblePrimitive } from "@base-ui/react/collapsible";
-
-function Collapsible({ ...props }: CollapsiblePrimitive.Root.Props) {
-  return <CollapsiblePrimitive.Root data-slot="collapsible" {...props} />;
-}
-
-function CollapsibleTrigger({ ...props }: CollapsiblePrimitive.Trigger.Props) {
-  return (
-    <CollapsiblePrimitive.Trigger data-slot="collapsible-trigger" {...props} />
-  );
-}
-
-function CollapsibleContent({ ...props }: CollapsiblePrimitive.Panel.Props) {
-  return (
-    <CollapsiblePrimitive.Panel data-slot="collapsible-content" {...props} />
-  );
-}
-
-export { Collapsible, CollapsibleContent, CollapsibleTrigger };