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/hover-card.tsx

@@ -1,51 +0,0 @@
-"use client";
-
-import { PreviewCard as PreviewCardPrimitive } from "@base-ui/react/preview-card";
-
-import { cn } from "@/lib/utils";
-
-function HoverCard({ ...props }: PreviewCardPrimitive.Root.Props) {
-  return <PreviewCardPrimitive.Root data-slot="hover-card" {...props} />;
-}
-
-function HoverCardTrigger({ ...props }: PreviewCardPrimitive.Trigger.Props) {
-  return (
-    <PreviewCardPrimitive.Trigger data-slot="hover-card-trigger" {...props} />
-  );
-}
-
-function HoverCardContent({
-  className,
-  side = "bottom",
-  sideOffset = 4,
-  align = "center",
-  alignOffset = 4,
-  ...props
-}: PreviewCardPrimitive.Popup.Props &
-  Pick<
-    PreviewCardPrimitive.Positioner.Props,
-    "align" | "alignOffset" | "side" | "sideOffset"
-  >) {
-  return (
-    <PreviewCardPrimitive.Portal data-slot="hover-card-portal">
-      <PreviewCardPrimitive.Positioner
-        align={align}
-        alignOffset={alignOffset}
-        side={side}
-        sideOffset={sideOffset}
-        className="isolate z-50"
-      >
-        <PreviewCardPrimitive.Popup
-          data-slot="hover-card-content"
-          className={cn(
-            "z-50 w-64 origin-(--transform-origin) rounded-lg bg-popover p-2.5 text-sm text-popover-foreground shadow-md ring-1 ring-foreground/10 outline-hidden duration-100 data-[side=bottom]:slide-in-from-top-2 data-[side=inline-end]:slide-in-from-left-2 data-[side=inline-start]:slide-in-from-right-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-open:animate-in data-open:fade-in-0 data-open:zoom-in-95 data-closed:animate-out data-closed:fade-out-0 data-closed:zoom-out-95",
-            className,
-          )}
-          {...props}
-        />
-      </PreviewCardPrimitive.Positioner>
-    </PreviewCardPrimitive.Portal>
-  );
-}
-
-export { HoverCard, HoverCardContent, HoverCardTrigger };