Add per-node health checks with status indicators and scheduled probes.

service/internal/api/setup_auth_handlers.go

@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"codeberg.org/SquidSE/ClusterCanvas/service/internal/auth"
+	"codeberg.org/SquidSE/ClusterCanvas/service/internal/health"
 	"codeberg.org/SquidSE/ClusterCanvas/service/internal/runner"
 	"codeberg.org/SquidSE/ClusterCanvas/service/internal/settings"
 )
@@ -77,10 +78,11 @@ type meResponse struct {
 
 // App holds shared API dependencies.
 type App struct {
-	ConfigDir string
-	Key       []byte
-	Sessions  *auth.SessionManager
-	Executor  *runner.Executor
+	ConfigDir     string
+	Key           []byte
+	Sessions      *auth.SessionManager
+	Executor      *runner.Executor
+	HealthChecker *health.Checker
 
 	pendingTOTPMu sync.Mutex
 	pendingTOTP   map[string]string // username -> secret (setup only)
@@ -91,18 +93,20 @@ func newApp(configDir string) (*App, error) {
 	if err != nil {
 		// Key is required for setup complete / auth; status still works without it.
 		app := &App{
-			ConfigDir:   configDir,
-			pendingTOTP: map[string]string{},
-			Executor:    runner.NewExecutor(configDir, nil),
+			ConfigDir:     configDir,
+			pendingTOTP:   map[string]string{},
+			Executor:      runner.NewExecutor(configDir, nil),
+			HealthChecker: health.NewChecker(configDir, nil),
 		}
 		return app, nil
 	}
 	app := &App{
-		ConfigDir:   configDir,
-		Key:         key,
-		Sessions:    auth.NewSessionManager(configDir, key),
-		pendingTOTP: map[string]string{},
-		Executor:    runner.NewExecutor(configDir, key),
+		ConfigDir:     configDir,
+		Key:           key,
+		Sessions:      auth.NewSessionManager(configDir, key),
+		pendingTOTP:   map[string]string{},
+		Executor:      runner.NewExecutor(configDir, key),
+		HealthChecker: health.NewChecker(configDir, key),
 	}
 	return app, nil
 }