fix(agent-service): add multer as explicit runtime dependency

multer was only transitively available; pnpm strict mode blocks it.
Also adds @types/multer for TypeScript compilation.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/services/agent-service/package.json

@@ -16,6 +16,7 @@
     "@nestjs/microservices": "^10.3.0",
     "@nestjs/passport": "^10.0.0",
     "@nestjs/platform-express": "^10.3.0",
+    "multer": "^1.4.5-lts.1",
     "@nestjs/websockets": "^10.3.0",
     "@nestjs/platform-ws": "^10.3.0",
     "ws": "^8.16.0",

pnpm-lock.yaml

@@ -68,6 +68,9 @@ importers:
       ioredis:
         specifier: ^5.3.0
         version: 5.9.2
+      multer:
+        specifier: ^1.4.5-lts.1
+        version: 1.4.5-lts.2
       pg:
         specifier: ^8.11.0
         version: 8.18.0