feat: Add comprehensive test suite and cleanup step

- Split validation into 4 granular CI steps (Config, Timescale, Vector, Hybrid)
- Added cleanup step for Docker images in CI
- Created SQL test scripts in tests/ for robustness

.gitea/workflows/docker-build.yml

@@ -51,30 +51,23 @@ jobs:
             sleep 2
           done
 
-      - name: 🧪 Test image - Verify extensions
+      - name: ⚙️ Setup Tests
         run: |
-          # Wait a bit more for init scripts to complete
-          sleep 5
-          
-          # Check extensions are installed
-          RESULT=$(docker exec test-pg${{ matrix.pg_version }} psql -U postgres -t -c \
-            "SELECT count(*) FROM pg_extension WHERE extname IN ('timescaledb', 'vector', 'vchord');")
-          
-          EXTENSIONS=$(echo $RESULT | tr -d ' ')
-          echo "Found $EXTENSIONS extensions"
-          
-          if [ "$EXTENSIONS" -eq "3" ]; then
-            echo "✅ All 3 extensions are installed!"
-          else
-            echo "❌ Expected 3 extensions, found $EXTENSIONS"
-            docker exec test-pg${{ matrix.pg_version }} psql -U postgres -c \
-              "SELECT extname, extversion FROM pg_extension;"
-            exit 1
-          fi
-          
-          # Show extension versions
-          docker exec test-pg${{ matrix.pg_version }} psql -U postgres -c \
-            "SELECT extname, extversion FROM pg_extension WHERE extname IN ('timescaledb', 'vector', 'vchord');"
+          # Wait for valid startup
+          sleep 10
+          docker cp tests/ test-pg${{ matrix.pg_version }}:/tmp/tests/
+
+      - name: 🧪 Test 1: Configuration
+        run: docker exec test-pg${{ matrix.pg_version }} psql -U postgres -f /tmp/tests/test-1-config.sql
+
+      - name: 🧪 Test 2: TimescaleDB
+        run: docker exec test-pg${{ matrix.pg_version }} psql -U postgres -f /tmp/tests/test-2-timescale.sql
+
+      - name: 🧪 Test 3: VectorChord
+        run: docker exec test-pg${{ matrix.pg_version }} psql -U postgres -f /tmp/tests/test-3-vector.sql
+
+      - name: 🧪 Test 4: Hybrid Scenarios
+        run: docker exec test-pg${{ matrix.pg_version }} psql -U postgres -f /tmp/tests/test-4-hybrid.sql
 
       - name: 🧹 Cleanup test container
         if: always()
@@ -101,4 +94,10 @@ jobs:
           tags: |
             gitea.killinger.fr/maxime.killinger/postgres-ts-vectors:latest
 
+      - name: 🧹 Cleanup Docker images
+        if: always()
+        run: |
+          docker rmi postgres-ts-vectors:pg${{ matrix.pg_version }}-test || true
+          docker image prune -f
+