fix(broker): add BROKER_SKIP_MIGRATE=1 escape hatch for manual-migrated DBs

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/broker/src/index.ts

@@ -4448,10 +4448,16 @@ async function recoverScheduledMessages(): Promise<void> {
 }
 
 async function main(): Promise<void> {
-  // Run pending migrations before the first connection is accepted.
-  // Exits non-zero on failure so Coolify sees a broken container.
+  // Auto-migrate: skip when BROKER_SKIP_MIGRATE=1 (e.g. when the prod
+  // DB was already manually migrated and the drizzle tracking table is
+  // out of sync). Once drizzle's __drizzle_migrations is caught up,
+  // remove the flag.
+  if (process.env.BROKER_SKIP_MIGRATE !== "1") {
     const { runMigrationsOnStartup } = await import("./migrate");
     await runMigrationsOnStartup();
+  } else {
+    console.log("[migrate] skipped (BROKER_SKIP_MIGRATE=1)");
+  }
 
   const wss = new WebSocketServer({
     noServer: true,