prompt(core): add cluster health check

docs/PROMPTS.md

@@ -57,6 +57,43 @@ content = "I'll retrieve and analyze the logs for you."
 ### Argument Substitution
 Use `{{argument_name}}` placeholders in message content. The template engine replaces these with actual values when the prompt is called.
 
+## Built-in Prompts
+
+The Kubernetes MCP Server includes several built-in prompts that are always available:
+
+### `cluster-health-check`
+
+Performs a comprehensive health assessment of your Kubernetes or OpenShift cluster.
+
+**Arguments:**
+- `namespace` (optional): Limit the health check to a specific namespace. Default: all namespaces.
+- `verbose` (optional): Enable detailed resource-level information. Values: `true` or `false`. Default: `false`.
+- `check_events` (optional): Include recent warning/error events in the analysis. Values: `true` or `false`. Default: `true`.
+
+**What it checks:**
+- **Nodes**: Status and conditions (Ready, MemoryPressure, DiskPressure, etc.)
+- **Cluster Operators** (OpenShift only): Available and degraded status
+- **Pods**: Phase, container statuses, restart counts, and common issues (CrashLoopBackOff, ImagePullBackOff, etc.)
+- **Workload Controllers**: Deployments, StatefulSets, and DaemonSets replica status
+- **Persistent Volume Claims**: Binding status
+- **Events**: Recent warning and error events from the last hour
+
+**Example usage:**
+```
+Check the health of my cluster
+```
+
+Or with specific parameters:
+```
+Check the health of namespace production with verbose output
+```
+
+The prompt gathers comprehensive diagnostic data and presents it to the LLM for analysis, which will provide:
+1. Overall health status (Healthy, Warning, or Critical)
+2. Critical issues requiring immediate attention
+3. Warnings and recommendations
+4. Summary by component
+
 ## Configuration File Location
 
 Place your prompts in the `config.toml` file used by the MCP server. Specify the config file path using the `--config` flag when starting the server.

pkg/mcp/mcp_watch_test.go

@@ -58,7 +58,10 @@ func (s *WatchKubeConfigSuite) TestNotifiesToolsChangeMultipleTimes() {
 		notification := s.WaitForNotification(5 * time.Second)
 		// Then
 		s.NotNil(notification, "WatchKubeConfig did not notify on iteration %d", i)
-		s.Equalf("notifications/tools/list_changed", notification.Method, "WatchKubeConfig did not notify tools change on iteration %d", i)
+		s.True(
+			notification.Method == "notifications/tools/list_changed" || notification.Method == "notifications/prompts/list_changed",
+			"WatchKubeConfig did not notify tools or prompts change on iteration %d, got: %s", i, notification.Method,
+		)
 	}
 }
 
@@ -154,7 +157,10 @@ func (s *WatchClusterStateSuite) TestNotifiesToolsChangeMultipleTimes() {
 		s.AddAPIGroup(`{"name":"` + name + `.example.com","versions":[{"groupVersion":"` + name + `.example.com/v1","version":"v1"}],"preferredVersion":{"groupVersion":"` + name + `.example.com/v1","version":"v1"}}`)
 		notification := s.WaitForNotification(10 * time.Second)
 		s.NotNil(notification, "cluster state watcher did not notify on iteration %d", i)
-		s.Equalf("notifications/tools/list_changed", notification.Method, "cluster state watcher did not notify tools change on iteration %d", i)
+		s.True(
+			notification.Method == "notifications/tools/list_changed" || notification.Method == "notifications/prompts/list_changed",
+			"cluster state watcher did not notify tools or prompts change on iteration %d, got: %s", i, notification.Method,
+		)
 	}
 }