feat(admin): add full-chain trace and performance monitoring

- Backend: trace.Logger ring-buffer for request chain events
- Backend: perf.Monitor with runtime.MemStats sampling every 10s
- Backend: /api/v1/admin/trace and /api/v1/admin/perf endpoints
- Frontend: TracePage — timeline with hop icons and status dots
- Frontend: PerformancePage — memory/GC bar charts + live stats
- Admin nav expanded to 11 items

backend/cmd/cyrene/main.go

@@ -33,6 +33,8 @@ import (
 
 	"git.yeij.top/AskaEth/Cyrene_v2/services/ai-core/llm"
 	llmlog "git.yeij.top/AskaEth/Cyrene_v2/services/ai-core/llm"
+	tracepkg "git.yeij.top/AskaEth/Cyrene_v2/services/ai-core/trace"
+	perfpkg "git.yeij.top/AskaEth/Cyrene_v2/services/ai-core/perf"
 	aiCoreCtx "git.yeij.top/AskaEth/Cyrene_v2/services/ai-core/context"
 	"git.yeij.top/AskaEth/Cyrene_v2/services/ai-core/orchestrator"
 	"git.yeij.top/AskaEth/Cyrene_v2/services/ai-core/persona"
@@ -233,10 +235,16 @@ func main() {
 
 	// Build dependencies for gateway handlers
 	llmLogger := llmlog.NewLogger(200)
+	traceLogger := tracepkg.NewLogger(500)
+	perfMon := perfpkg.NewMonitor(120, 10*time.Second)
+	perfMon.Start()
+
 	gwDeps := api.Dependencies{
 		AuthMgr:      authMgr,
 		Orchestrator: orch,
 		LLMLogger:    &llmLoggerAdapter{Logger: llmLogger},
+		TraceLog:     &traceAdapter{Logger: traceLogger},
+		PerfMon:      &perfAdapter{Monitor: perfMon},
 		ModelConfig:  api.NewModelConfigStore(),
 		PluginList:   pluginNamesToMap(reg.ListNames()),
 	}
@@ -294,3 +302,41 @@ func pluginNamesToMap(names []string) []map[string]string {
 	}
 	return result
 }
+
+// traceAdapter adapts trace.Logger to api.TraceLogger interface.
+type traceAdapter struct{ *tracepkg.Logger }
+func (a *traceAdapter) Recent(n int) []map[string]any {
+	events := a.Logger.Recent(n)
+	result := make([]map[string]any, len(events))
+	for i, e := range events {
+		result[i] = map[string]any{
+			"id": e.ID, "timestamp": e.Timestamp.Format(time.RFC3339),
+			"hop": e.Hop, "label": e.Label, "status": e.Status,
+			"duration_ms": e.DurationMs, "detail": e.Detail, "data": e.Data,
+		}
+		if result[i]["data"] == nil { result[i]["data"] = map[string]any{} }
+	}
+	return result
+}
+
+// perfAdapter adapts perf.Monitor to api.PerfMonitor interface.
+type perfAdapter struct{ *perfpkg.Monitor }
+func (a *perfAdapter) Latest() map[string]any {
+	s := a.Monitor.Latest()
+	return map[string]any{
+		"alloc_mb": s.AllocMB, "sys_mb": s.SysMB,
+		"num_gc": s.NumGC, "goroutines": s.Goroutines, "heap_objects": s.HeapObj,
+	}
+}
+func (a *perfAdapter) History() []map[string]any {
+	snapshots := a.Monitor.History()
+	result := make([]map[string]any, len(snapshots))
+	for i, s := range snapshots {
+		result[i] = map[string]any{
+			"timestamp": s.Timestamp.Format(time.RFC3339),
+			"alloc_mb": s.AllocMB, "sys_mb": s.SysMB,
+			"num_gc": s.NumGC, "goroutines": s.Goroutines,
+		}
+	}
+	return result
+}