feat(agent): add crash logs and watchdog startup

- Recover panics to disk for diagnostics
- Add 5-minute watchdog task with startup
- Add -ensure flag to start detached agent
- Add script to pull remote folder via API

lib/openapi/spec.go

@@ -216,14 +216,14 @@ func Spec() map[string]any {
 			},
 			"/api/v1/startup": map[string]any{
 				"post": map[string]any{
-					"summary":     "Add agent to Windows startup",
+					"summary":     "Add agent to Windows startup and a 5-minute watchdog task",
 					"operationId": "enableStartup",
 					"responses": auth(map[string]any{
 						"200": okJSON("Startup state", ref("StartupState")),
 					}),
 				},
 				"delete": map[string]any{
-					"summary":     "Remove agent from Windows startup",
+					"summary":     "Remove agent from Windows startup and the watchdog task",
 					"operationId": "disableStartup",
 					"responses": auth(map[string]any{
 						"200": okJSON("Startup state", ref("StartupState")),