fix: force --no-cache on docker build to pick up all dependency changes

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -29,8 +29,8 @@ jobs:
             git fetch origin production-deployment
             git reset --hard origin/production-deployment
 
-            echo "=== Building images ==="
-            docker compose build backend frontend
+            echo "=== Building images (no cache) ==="
+            docker compose build --no-cache backend frontend
 
             echo "=== Starting services ==="
             docker compose up -d --remove-orphans