fix(ci): install composer directly in runner container, not via docker run

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

.gitea/workflows/qa-required.yaml

@@ -20,18 +20,10 @@ jobs:
       - name: Create .env for CI
         run: cp .env.example .env
 
-      - name: Debug paths
-        run: |
-          echo "pwd=$(pwd)"
-          echo "GITHUB_WORKSPACE=$GITHUB_WORKSPACE"
-          ls -la
-
       - name: Install Composer dependencies
         run: |
-          docker run --rm \
-            -v "$GITHUB_WORKSPACE:/app" \
-            -w /app \
-            composer:2 install --no-dev --no-interaction --prefer-dist --optimize-autoloader
+          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: |