Enable coverage

Author: andy-tier1app

.github/workflows/ci.yml

@@ -116,7 +116,15 @@ jobs:
       - name: Verify dependencies
         run: go mod verify
 
-      - name: Run tests (excluding CGO-dependent packages)
+      - name: Run tests with coverage (excluding CGO-dependent packages)
         run: |
-          go test -v -race $(go list ./... | grep -v 'internal/cli' | grep -v 'internal/capture/procps/linux')
+          go test -v -race -coverprofile=coverage.out -covermode=atomic $(go list ./... | grep -v 'internal/cli' | grep -v 'internal/capture/procps/linux')
+
+      - name: Display coverage summary
+        run: |
+          go tool cover -func=coverage.out | tail -20
+          echo ""
+          echo "=== Total Coverage ==="
+          go tool cover -func=coverage.out | grep total
+