chore(deps): update package-lock.json and backend dependencies, adjust Dockerfile for leaner backend image

Removed unnecessary frontend dependencies from backend Docker image and updated package-lock.json to include new dev dependencies. Adjusted backend Dockerfile to streamline the build process and ensure proper workspace configuration.

backend/package.json

@@ -24,7 +24,6 @@
     "drizzle-orm": "^0.45.2",
     "fastify": "^5.8.5",
     "fastify-plugin": "^5.1.0",
-    "pino-pretty": "^13.1.3",
     "undici": "^8.1.0",
     "zod": "^4.4.1"
   },
@@ -33,6 +32,7 @@
     "@types/node": "^22.15.3",
     "drizzle-kit": "^0.31.10",
     "jose": "^6.2.11",
+    "pino-pretty": "^13.1.3",
     "tsx": "^4.19.3",
     "typescript": "^5.8.3"
   }