fix(ci): set COMPOSE_PROJECT_NAME=breadcrumb-ci at job level for stable container names

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

.gitea/workflows/deploy.yaml

@@ -9,6 +9,8 @@ jobs:
   qa:
     name: QA gates
     runs-on: ubuntu-latest
+    env:
+      COMPOSE_PROJECT_NAME: breadcrumb-ci
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -16,16 +18,14 @@ jobs:
       - name: Create .env for CI
         run: cp .env.example .env
 
-      - name: Install Composer dependencies
-        run: |
-          curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
-          composer install --no-dev --no-interaction --prefer-dist --optimize-autoloader
-
       - name: Start project services
         run: |
           docker compose down --remove-orphans 2>/dev/null || true
           docker compose up -d --force-recreate php db memcached
-          sleep 10
+          sleep 15
+
+      - name: Install Composer dependencies
+        run: docker compose exec -T php bash -c "composer install --no-dev --no-interaction --prefer-dist --optimize-autoloader"
 
       - name: Run required QA gates
         run: bin/qa-required.sh