ci(workflow): Integrate API readiness tests

.github/workflows/publish.yml

@@ -25,10 +25,13 @@ jobs:
         include:
           - platform: linux/amd64
             runner: ubuntu-latest
+            test: true
           - platform: linux/arm64
             runner: ubuntu-24.04-arm
+            test: true
           - platform: linux/arm/v7
             runner: ubuntu-24.04-arm
+            test: false
 
     steps:
       - name: Checkout repository
@@ -54,20 +57,64 @@ jobs:
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
 
-      - name: Build and push by digest
+      - name: Build Docker image
         id: build
         uses: docker/build-push-action@v6
         with:
           context: .
           platforms: ${{ matrix.platform }}
           labels: ${{ steps.meta.outputs.labels }}
-          outputs: ${{ github.event_name != 'pull_request' && format('type=image,name={0}/{1},push-by-digest=true,name-canonical=true,push=true', env.REGISTRY, env.IMAGE_NAME) || 'type=docker' }}
+          load: ${{ matrix.test }}
+          tags: hypermind-test:${{ github.sha }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Run container for testing
+        if: matrix.test
+        run: docker run -d --name hypermind-test -p 3000:3000 hypermind-test:${{ github.sha }}
+
+      - name: Wait for server to be ready
+        if: matrix.test
+        run: |
+          for i in {1..30}; do
+            if curl -sf http://localhost:3000/api/stats; then
+              echo "Server is ready"
+              exit 0
+            fi
+            echo "Waiting for server... ($i/30)"
+            sleep 1
+          done
+          echo "Server failed to start"
+          docker logs hypermind-test
+          exit 1
+
+      - name: Verify API response
+        if: matrix.test
+        run: |
+          response=$(curl -sf http://localhost:3000/api/stats)
+          echo "Response: $response"
+          echo "$response" | jq -e '.count != null and .id != null'
+
+      - name: Cleanup test container
+        if: always() && matrix.test
+        run: docker rm -f hypermind-test || true
+
+      - name: Push by digest
+        if: github.event_name != 'pull_request'
+        id: push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: ${{ matrix.platform }}
+          labels: ${{ steps.meta.outputs.labels }}
+          outputs: type=image,name=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
+          cache-from: type=gha
 
       - name: Export digest
         if: github.event_name != 'pull_request'
         run: |
           mkdir -p ${{ runner.temp }}/digests
-          digest="${{ steps.build.outputs.digest }}"
+          digest="${{ steps.push.outputs.digest }}"
           touch "${{ runner.temp }}/digests/${digest#sha256:}"
 
       - name: Upload digest