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/resizable.tsx

@@ -1,50 +0,0 @@
-"use client";
-
-import * as ResizablePrimitive from "react-resizable-panels";
-
-import { cn } from "@/lib/utils";
-
-function ResizablePanelGroup({
-  className,
-  ...props
-}: ResizablePrimitive.GroupProps) {
-  return (
-    <ResizablePrimitive.Group
-      data-slot="resizable-panel-group"
-      className={cn(
-        "flex h-full w-full aria-[orientation=vertical]:flex-col",
-        className,
-      )}
-      {...props}
-    />
-  );
-}
-
-function ResizablePanel({ ...props }: ResizablePrimitive.PanelProps) {
-  return <ResizablePrimitive.Panel data-slot="resizable-panel" {...props} />;
-}
-
-function ResizableHandle({
-  withHandle,
-  className,
-  ...props
-}: ResizablePrimitive.SeparatorProps & {
-  withHandle?: boolean;
-}) {
-  return (
-    <ResizablePrimitive.Separator
-      data-slot="resizable-handle"
-      className={cn(
-        "relative flex w-px items-center justify-center bg-border ring-offset-background after:absolute after:inset-y-0 after:left-1/2 after:w-1 after:-translate-x-1/2 focus-visible:ring-1 focus-visible:ring-ring focus-visible:outline-hidden aria-[orientation=horizontal]:h-px aria-[orientation=horizontal]:w-full aria-[orientation=horizontal]:after:left-0 aria-[orientation=horizontal]:after:h-1 aria-[orientation=horizontal]:after:w-full aria-[orientation=horizontal]:after:translate-x-0 aria-[orientation=horizontal]:after:-translate-y-1/2 [&[aria-orientation=horizontal]>div]:rotate-90",
-        className,
-      )}
-      {...props}
-    >
-      {withHandle && (
-        <div className="z-10 flex h-6 w-1 shrink-0 rounded-lg bg-border" />
-      )}
-    </ResizablePrimitive.Separator>
-  );
-}
-
-export { ResizableHandle, ResizablePanel, ResizablePanelGroup };