api: add /api/v1/metrics endpoint exposing Dashboard metrics (avg_distill_loss, etc.)

go/internal/api/server.go

@@ -304,6 +304,19 @@ func NewServer() http.Handler {
 	mux.HandleFunc("/api/v1/bootstrap", api.Bootstrap)
 	mux.HandleFunc("/api/v1/stats", api.Stats)
 	mux.HandleFunc("/api/v1/batch-commit", api.BatchCommit)
+	// 自优化指标（Dashboard，含 avg_distill_loss）
+	mux.HandleFunc("/api/v1/metrics", func(w http.ResponseWriter, r *http.Request) {
+		m := selfoptimize.Dash.Metrics()
+		if stats, err := ldb.Stats(); err == nil {
+			if total, ok := stats["total_memories"].(float64); ok {
+				m["total_memories"] = total
+			}
+			if total, ok := stats["total_episodes"].(float64); ok {
+				m["total_episodes"] = total
+			}
+		}
+		respondJSON(w, 200, m)
+	})
 	// ─── WebSocket 实时推送 ──────────────────────
 	mux.HandleFunc("/api/v1/ws/", routes.WSHandler)
 	mux.HandleFunc("/api/v1/ws", func(w http.ResponseWriter, r *http.Request) {