chore: cleanup images (#14380)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
* Added canary build version support with automatic validation and
age-based restrictions for testing pre-release versions.

* **Chores**
* Enhanced Docker build process with multi-stage builds, image
optimization, and memory allocation improvements.
  * Reorganized dependencies to distinguish development-only packages.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/backend/server/src/core/sync/gateway.ts

@@ -14,6 +14,7 @@ import { type Server, Socket } from 'socket.io';
 
 import {
   CallMetric,
+  checkCanaryDateClientVersion,
   DocNotFound,
   DocUpdateBlocked,
   EventBus,
@@ -71,14 +72,33 @@ const DOC_UPDATES_PROTOCOL_026 = new semver.Range('>=0.26.0-0', {
 
 type SyncProtocolRoomType = Extract<RoomType, 'sync-025' | 'sync-026'>;
 
+function normalizeWsClientVersion(clientVersion: string): string | null {
+  if (env.namespaces.canary) {
+    const canaryCheck = checkCanaryDateClientVersion(clientVersion);
+    if (canaryCheck.matched) {
+      return canaryCheck.allowed ? canaryCheck.normalized : null;
+    }
+  }
+
+  return clientVersion;
+}
+
 function isSupportedWsClientVersion(clientVersion: string): boolean {
+  const normalized = normalizeWsClientVersion(clientVersion);
+  if (!normalized) {
+    return false;
+  }
+
   return Boolean(
-    semver.valid(clientVersion) && MIN_WS_CLIENT_VERSION.test(clientVersion)
+    semver.valid(normalized) && MIN_WS_CLIENT_VERSION.test(normalized)
   );
 }
 
 function getSyncProtocolRoomType(clientVersion: string): SyncProtocolRoomType {
-  return DOC_UPDATES_PROTOCOL_026.test(clientVersion) ? 'sync-026' : 'sync-025';
+  const normalized = normalizeWsClientVersion(clientVersion);
+  return DOC_UPDATES_PROTOCOL_026.test(normalized ?? clientVersion)
+    ? 'sync-026'
+    : 'sync-025';
 }
 
 enum SpaceType {