diag(client): _onStats/setLivePing 打点,定位延迟为何不回写 node.ping

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

client/lib/state/connection_provider.dart

@@ -248,12 +248,17 @@ class ConnectionController extends StateNotifier<ConnectionState> {
     // 自动连接/重连到已在跑的隧道时不会走 _connect → _connectedNode 为 null;回退到
     // effectiveNode(当前/智能所选),否则 urltest 实测无处回写、连接页延迟一直显示 —。
     final Node node = _connectedNode ?? _ref.read(effectiveNodeProvider);
+    final ds = e.urltestResults.where((r) => r.delayMs > 0).map((r) => r.delayMs).toList();
+    logLine('Stats',
+        'urltest=[${e.urltestResults.map((r) => "${r.tag}:${r.delayMs}").join(",")}] '
+        'conn=${_connectedNode == null ? "null" : _connectedNode!.code} '
+        'eff=${node.code}/${node.uuid.isEmpty ? "EMPTY" : "ok"} ds=$ds');
     if (node.uuid.isEmpty) return;
-    final ds = e.urltestResults.where((r) => r.delayMs > 0).map((r) => r.delayMs);
     if (ds.isEmpty) return;
     // urltest 成功:经 proxy 出站(REALITY 到节点)真实可达 → 记录时刻(供路径 A 判活)+ 回写延迟。
     _lastUrltestOk = DateTime.now();
     final best = ds.reduce((a, b) => a < b ? a : b);
+    logLine('Stats', 'setLivePing node=${node.code} = ${best}ms');
     _ref.read(nodesProvider.notifier).setLivePing(node.uuid, best);
   }
 

client/lib/state/nodes_provider.dart

@@ -14,6 +14,7 @@ import '../services/api_config.dart';
 import '../services/latency_probe.dart';
 import 'auth_provider.dart';
 import 'connection_provider.dart';
+import '../bridge/log.dart';
 
 // ── 节点列表 AsyncNotifier ────────────────────────────────────────
 
@@ -86,14 +87,24 @@ class NodesNotifier extends AsyncNotifier<List<Node>> {
   /// 回写某节点的实测延迟(ms)。连接态由 ConnectionController 用内核 urltest 回填连接节点,
   /// 让「连接页延迟」与「节点列表延迟」同源(都读 node.ping)、显示一致。ms<=0 忽略。
   void setLivePing(String uuid, int ms) {
-    if (ms <= 0 || _disposed) return;
+    if (ms <= 0 || _disposed) {
+      logLine('Ping', 'setLivePing SKIP ms=$ms disposed=$_disposed');
+      return;
+    }
     final list = state.valueOrNull;
-    if (list == null) return;
+    if (list == null) {
+      logLine('Ping', 'setLivePing no-list');
+      return;
+    }
     var changed = false;
     final updated = [
       for (final n in list)
         if (n.uuid == uuid && n.ping != ms) (() { changed = true; return n.copyWith(ping: ms); })() else n
     ];
+    final match = list.any((n) => n.uuid == uuid);
+    logLine('Ping',
+        'setLivePing ms=$ms match=$match changed=$changed '
+        'nodes=[${list.map((n) => "${n.code}:${n.ping}").join(",")}]');
     if (changed) state = AsyncData(updated);
   }