diff --git a/Frontend/scripts/compose-dev.sh b/Frontend/scripts/compose-dev.sh
index 2cb5d68..1521706 100755
--- a/Frontend/scripts/compose-dev.sh
+++ b/Frontend/scripts/compose-dev.sh
@@ -6,7 +6,6 @@ cd "$(dirname "$0")/.."
 # Serialize dependency install when multiple containers share the same workspace.
 LOCK_FILE=/app/Frontend/.npm-install.lock
 exec 9>"$LOCK_FILE"
-flock 9
 
 # Prevent path leakage between host Nuxt build cache and Docker runtime.
 # If any cache contains absolute /Users/... imports, Nitro dev runtime can break in /app.
@@ -15,24 +14,29 @@ find .nuxt -mindepth 1 -maxdepth 1 -exec rm -rf {} + || true
 find .output -mindepth 1 -maxdepth 1 -exec rm -rf {} + || true
 rm -rf node_modules/.cache node_modules/.vite
 
-# Install deps (container starts from a clean image).
-# This workspace has mixed Apollo/Nuxt peer graphs; keep install deterministic in Docker.
-npm install --legacy-peer-deps
+# Only installation steps are serialized; runtime must not hold the lock.
+(
+  flock 9
 
-# sharp is a native module and can break when cached node_modules were installed
-# for a different CPU variant (for example arm64v8). Force a local rebuild.
-ARCH="$(uname -m)"
-if [ "$ARCH" = "aarch64" ] || [ "$ARCH" = "arm64" ]; then
-  npm rebuild sharp --platform=linux --arch=arm64v8 \
-    || npm rebuild sharp --platform=linux --arch=arm64 \
-    || npm install sharp --platform=linux --arch=arm64v8 --save-exact=false \
-    || npm install sharp --platform=linux --arch=arm64 --save-exact=false
-elif [ "$ARCH" = "x86_64" ] || [ "$ARCH" = "amd64" ]; then
-  npm rebuild sharp --platform=linux --arch=x64 \
-    || npm install sharp --platform=linux --arch=x64 --save-exact=false
-else
-  npm rebuild sharp || true
-fi
+  # Install deps (container starts from a clean image).
+  # This workspace has mixed Apollo/Nuxt peer graphs; keep install deterministic in Docker.
+  npm install --legacy-peer-deps
+
+  # sharp is a native module and can break when cached node_modules were installed
+  # for a different CPU variant (for example arm64v8). Force a local rebuild.
+  ARCH="$(uname -m)"
+  if [ "$ARCH" = "aarch64" ] || [ "$ARCH" = "arm64" ]; then
+    npm rebuild sharp --platform=linux --arch=arm64v8 \
+      || npm rebuild sharp --platform=linux --arch=arm64 \
+      || npm install sharp --platform=linux --arch=arm64v8 --save-exact=false \
+      || npm install sharp --platform=linux --arch=arm64 --save-exact=false
+  elif [ "$ARCH" = "x86_64" ] || [ "$ARCH" = "amd64" ]; then
+    npm rebuild sharp --platform=linux --arch=x64 \
+      || npm install sharp --platform=linux --arch=x64 --save-exact=false
+  else
+    npm rebuild sharp || true
+  fi
+)
 
 # Wait until PostgreSQL is reachable before applying schema.
 until node -e "const u=new URL(process.env.DATABASE_URL||''); const net=require('net'); const s=net.createConnection({host:u.hostname,port:Number(u.port||5432)}); s.on('connect',()=>{s.end(); process.exit(0);}); s.on('error',()=>process.exit(1)); setTimeout(()=>process.exit(1), 1000);" ; do
diff --git a/Frontend/scripts/compose-worker.sh b/Frontend/scripts/compose-worker.sh
index 0a8907a..1441330 100644
--- a/Frontend/scripts/compose-worker.sh
+++ b/Frontend/scripts/compose-worker.sh
@@ -6,24 +6,28 @@ cd "$(dirname "$0")/.."
 # Serialize dependency install when multiple containers share the same workspace.
 LOCK_FILE=/app/Frontend/.npm-install.lock
 exec 9>"$LOCK_FILE"
-flock 9
 
-# Worker container starts from clean image.
-# Install deps without frontend postinstall hooks (nuxt prepare) to keep worker lean/stable.
-npm install --ignore-scripts --legacy-peer-deps
-ARCH="$(uname -m)"
-if [ "$ARCH" = "aarch64" ] || [ "$ARCH" = "arm64" ]; then
-  npm rebuild sharp --platform=linux --arch=arm64v8 \
-    || npm rebuild sharp --platform=linux --arch=arm64 \
-    || npm install sharp --platform=linux --arch=arm64v8 --save-exact=false \
-    || npm install sharp --platform=linux --arch=arm64 --save-exact=false
-elif [ "$ARCH" = "x86_64" ] || [ "$ARCH" = "amd64" ]; then
-  npm rebuild sharp --platform=linux --arch=x64 \
-    || npm install sharp --platform=linux --arch=x64 --save-exact=false
-else
-  npm rebuild sharp || true
-fi
-npx prisma generate
+# Only dependency bootstrap is serialized; worker runtime must not hold the lock.
+(
+  flock 9
+
+  # Worker container starts from clean image.
+  # Install deps without frontend postinstall hooks (nuxt prepare) to keep worker lean/stable.
+  npm install --ignore-scripts --legacy-peer-deps
+  ARCH="$(uname -m)"
+  if [ "$ARCH" = "aarch64" ] || [ "$ARCH" = "arm64" ]; then
+    npm rebuild sharp --platform=linux --arch=arm64v8 \
+      || npm rebuild sharp --platform=linux --arch=arm64 \
+      || npm install sharp --platform=linux --arch=arm64v8 --save-exact=false \
+      || npm install sharp --platform=linux --arch=arm64 --save-exact=false
+  elif [ "$ARCH" = "x86_64" ] || [ "$ARCH" = "amd64" ]; then
+    npm rebuild sharp --platform=linux --arch=x64 \
+      || npm install sharp --platform=linux --arch=x64 --save-exact=false
+  else
+    npm rebuild sharp || true
+  fi
+  npx prisma generate
+)
 
 # Ensure DB is reachable before the worker starts consuming jobs.
 until node -e "const u=new URL(process.env.DATABASE_URL||''); const net=require('net'); const s=net.createConnection({host:u.hostname,port:Number(u.port||5432)}); s.on('connect',()=>{s.end(); process.exit(0);}); s.on('error',()=>process.exit(1)); setTimeout(()=>process.exit(1), 1000);" ; do