perf(home): 冷启动提前拉取首页数据

lib/core/config/app_config.dart

@@ -28,6 +28,12 @@ class AppConfig {
 
   static String _runtimeBaseUrl = '';
 
+  static Future<void>? _ready;
+
+  /// 启动地址探测完成信号；默认已完成，避免影响既有测试与调用方。
+  static Future<void> get ready => _ready ?? Future<void>.value();
+  static set ready(Future<void> value) => _ready = value;
+
   static const Duration _probeTimeout = Duration(seconds: 2);
   static const List<String> _probeCandidates = [
     lanBaseUrl,
@@ -85,10 +91,15 @@ class AppConfig {
       for (final candidate in _probeCandidates)
         if (candidate != _runtimeBaseUrl) candidate,
     ];
-    for (final candidate in candidates) {
-      final result = probe == null
-          ? await _probeBaseUrl(candidate)
-          : await _runInjectedProbe(candidate, probe);
+    final results = await Future.wait([
+      for (final candidate in candidates)
+        probe == null
+            ? _probeBaseUrl(candidate)
+            : _runInjectedProbe(candidate, probe),
+    ]);
+    for (var index = 0; index < candidates.length; index++) {
+      final candidate = candidates[index];
+      final result = results[index];
       if (kDebugMode) {
         final status = result.ok
             ? 'ok'