fix: use map for alarm queries to handle mixed formats

agent/internal/httpapi/alarms.go

@@ -17,19 +17,6 @@ import (
 	"rk3588sys/agent/internal/files"
 )
 
-type alarmRecord struct {
-	ID          string  `json:"id"`
-	Timestamp   string  `json:"timestamp"`
-	Channel     string  `json:"channel"`
-	RuleName    string  `json:"rule_name"`
-	RuleType    string  `json:"rule_type"`
-	ObjectLabel string  `json:"object_label,omitempty"`
-	Confidence  float64 `json:"confidence,omitempty"`
-	SnapshotURL string  `json:"snapshot_url,omitempty"`
-	ClipURL     string  `json:"clip_url,omitempty"`
-	DurationMs  int64   `json:"duration_ms,omitempty"`
-}
-
 func (s *Server) alarmsPath() string {
 	return filepath.Join(s.baseDir, "logs", "alarms.jsonl")
 }
@@ -121,13 +108,13 @@ func (s *Server) handleAlarmsRecent(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	if alarms == nil {
-		alarms = make([]alarmRecord, 0)
+		alarms = make([]map[string]any, 0)
 	}
 
 	writeJSON(w, http.StatusOK, map[string]any{"alarms": alarms})
 }
 
-func (s *Server) readRecentAlarms(limit int) ([]alarmRecord, error) {
+func (s *Server) readRecentAlarms(limit int) ([]map[string]any, error) {
 	path := s.alarmsPath()
 	f, err := os.Open(path)
 	if err != nil {
@@ -163,11 +150,11 @@ func (s *Server) readRecentAlarms(limit int) ([]alarmRecord, error) {
 		start = len(lines) - limit
 	}
 
-	alarms := make([]alarmRecord, 0, limit)
+	alarms := make([]map[string]any, 0, limit)
 	for i := start; i < len(lines); i++ {
-		var alarm alarmRecord
+		var alarm map[string]any
 		if err := json.Unmarshal([]byte(lines[i]), &alarm); err != nil {
-			continue // skip malformed lines
+			continue
 		}
 		alarms = append(alarms, alarm)
 	}