test(pod-health): add comprehensive unit tests for pod health monitoring

Add 703 lines of unit tests covering pod failure analysis, container status
detection, ConfigMap error extraction, and failure message building. Tests
verify all failure types (scheduling, init, crash, image pull, config errors)
and message prioritization logic.

Also exclude generated code and test utils from coverage reports via .codacy.yml
and Makefile filtering.

Author: AbdelrhmanHamouda

.codacy.yml

@@ -0,0 +1,3 @@
+exclude_paths:
+  - "**/zz_generated.deepcopy.go"
+  - "test/utils/**"

Makefile

@@ -114,7 +114,9 @@ tidy: ## Run go mod tidy
 
 .PHONY: test
 test: manifests generate fmt vet setup-envtest generate-test-crds ## Run tests.
-	KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) --bin-dir $(LOCALBIN) -p path)" go test $$(go list ./... | grep -v /e2e) -coverprofile cover.out
+	KUBEBUILDER_ASSETS="$(shell $(ENVTEST) use $(ENVTEST_K8S_VERSION) --bin-dir $(LOCALBIN) -p path)" go test $$(go list ./... | grep -v /e2e) -coverprofile cover.out.tmp
+	@grep -v -E '(zz_generated|test/utils)' cover.out.tmp > cover.out
+	@rm -f cover.out.tmp
 
 .PHONY: generate-test-crds
 generate-test-crds: kustomize manifests ## Generate v1-only CRD for integration tests (no conversion webhook needed).