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/helpers/helpers.go

@@ -8,6 +8,7 @@ import (
 	"os"
 	"sort"
 
+	"tea.chunkbyte.com/kato/go-worm/lib/crashlog"
 	"tea.chunkbyte.com/kato/go-worm/lib/models"
 )
 
@@ -18,6 +19,7 @@ func RecoverHandler(next http.Handler) http.Handler {
 		defer func() {
 			if recovered := recover(); recovered != nil {
 				Log.Printf("panic %s %s: %v", r.Method, r.URL.Path, recovered)
+				crashlog.RecordPanic(recovered)
 				WriteError(w, http.StatusInternalServerError, "internal server error")
 			}
 		}()