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/backend/src/modules/voice/voice.controller.ts

@@ -2,6 +2,7 @@ import { createChildLogger } from "@bete/shared/logger";
 import type { Request, Response } from "express";
 import { asyncHandler } from "../../shared/middlewares/index.js";
 import { publishCommandNoReply } from "../../shared/redis/index.js";
+import type { ConnectVoiceInput, VoiceCommandInput } from "./voice.schema.js";
 import {
   connectVoice,
   disconnectVoice,
@@ -17,22 +18,9 @@ export const handleGetVoiceStatus = asyncHandler(
   },
 );
 
-/** Safely extract a string value that may be a single string or string array. */
-function asString(val: unknown): string {
-  if (Array.isArray(val)) return String(val[0] ?? "");
-  return String(val ?? "");
-}
-
 export const handleConnectVoice = asyncHandler(
   async (req: Request, res: Response) => {
-    const guildId = asString(req.body.guildId);
-    const channelId = asString(req.body.channelId);
-    if (!guildId || !channelId) {
-      return res.status(400).json({
-        error: "VALIDATION_ERROR",
-        message: "guildId and channelId are required",
-      });
-    }
+    const { guildId, channelId } = req.body as ConnectVoiceInput;
     logger.debug({ guildId, channelId }, "Connecting to voice channel");
     const status = await connectVoice(guildId, channelId);
     res.json(status);
@@ -49,15 +37,7 @@ export const handleDisconnectVoice = asyncHandler(
 
 export const handleVoiceCommand = asyncHandler(
   async (req: Request, res: Response) => {
-    const command = asString(req.body.command);
-
-    if (!command) {
-      return res.status(400).json({
-        error: "VALIDATION_ERROR",
-        message: "command is required",
-      });
-    }
-
+    const { command } = req.body as VoiceCommandInput;
     logger.debug({ command }, "Publishing voice command");
     await publishCommandNoReply(command);
     res.json({ success: true, command });