Improve main CI workflow with better error handling and dependency checks

Author: dev-sujan

.github/workflows/ci.yml

@@ -35,13 +35,29 @@ jobs:
     - name: Verify dependencies
       shell: bash
       run: |
+        # Check file existence for debugging
+        echo "Checking if go.mod and go.sum exist"
+        if [ -f "go.mod" ]; then
+          echo "go.mod exists"
+        else
+          echo "go.mod does not exist"
+          exit 1
+        fi
+        
+        if [ -f "go.sum" ]; then
+          echo "go.sum exists"
+        else
+          echo "go.sum does not exist, will be created by go mod tidy"
+        fi
+        
+        # Download and tidy dependencies
         go mod download
         go mod tidy
 
     - name: Run tests
       shell: bash
       run: |
-        go test -v -race -coverprofile=coverage.txt -covermode=atomic ./stl/...
+        go test -v -race -coverprofile=coverage.txt -covermode=atomic ./stl/... || (echo "Tests failed" && exit 1)
 
     - name: Run examples
       shell: bash
@@ -126,6 +142,11 @@ jobs:
         gosec -fmt=sarif -out=gosec-results.sarif ./stl || echo "gosec SARIF output failed"
         # Show results summary
         gosec ./stl || echo "gosec scan failed"
+        # Ensure SARIF file exists for upload
+        if [ ! -f "gosec-results.sarif" ]; then
+          echo "Creating minimal valid SARIF file"
+          echo '{"version":"2.1.0","runs":[]}' > gosec-results.sarif
+        fi
 
     - name: Install Nancy
       run: go install github.com/sonatype-nexus-community/nancy@latest