feat: 移动端AI 开关关闭不再校验字段

native/lib/features/settings/ai_agent_settings_page.dart

@@ -319,23 +319,29 @@ class _AiAgentSettingsPageState extends ConsumerState<AiAgentSettingsPage> {
 
   Future<void> _save(AgentProviderConfig original) async {
     final models = _parseModels(_models.text);
-    setState(() => _modelsInvalid = models.isEmpty);
-    if (_formKey.currentState?.validate() != true || models.isEmpty) return;
+    if (_nativeAgentEnabled) {
+      setState(() => _modelsInvalid = models.isEmpty);
+      if (_formKey.currentState?.validate() != true || models.isEmpty) return;
+    }
+
+    final config = _nativeAgentEnabled
+        ? original.copyWith(
+            providerType: _provider,
+            apiUrl: _url.text.trim(),
+            apiKey: _key.text.trim(),
+            models: models,
+            contextLimit: int.parse(_contextLimit.text),
+            maxSteps: int.parse(_maxSteps.text),
+            nativeAgentEnabled: true,
+          )
+        : original.copyWith(nativeAgentEnabled: false);
 
     setState(() => _saving = true);
     try {
       await ref
           .read(agentSettingsProvider.notifier)
           .saveSettings(
-            config: original.copyWith(
-              providerType: _provider,
-              apiUrl: _url.text.trim(),
-              apiKey: _key.text.trim(),
-              models: models,
-              contextLimit: int.parse(_contextLimit.text),
-              maxSteps: int.parse(_maxSteps.text),
-              nativeAgentEnabled: _nativeAgentEnabled,
-            ),
+            config: config,
             hostPolicies: _hostPolicies,
             changedHostPolicies: _hostPolicies
                 .where((policy) => _changedHostIds.contains(policy.hostId))

native/lib/state/agent_providers.dart

@@ -65,11 +65,13 @@ class AgentSettingsNotifier extends AsyncNotifier<AgentSettingsData> {
     // Provider data and UI preferences use separate endpoints. Keeping the
     // existing preference out of the provider write prevents a stale settings
     // form from overwriting another client's UI preference.
-    await _repository.saveProvider(
-      config.copyWith(
-        nativeAgentEnabled: previousEnabled ?? config.nativeAgentEnabled,
-      ),
-    );
+    if (config.nativeAgentEnabled) {
+      await _repository.saveProvider(
+        config.copyWith(
+          nativeAgentEnabled: previousEnabled ?? config.nativeAgentEnabled,
+        ),
+      );
+    }
     var savedEnabled = config.nativeAgentEnabled;
     if (previousEnabled == null ||
         previousEnabled != config.nativeAgentEnabled) {

native/test/features/settings/ai_agent_settings_page_test.dart

@@ -52,12 +52,7 @@ class _FakeDisabledSettingsNotifier extends AgentSettingsNotifier {
 
   @override
   Future<AgentSettingsData> build() async => AgentSettingsData(
-    config: AgentProviderConfig(
-      apiUrl: 'https://api.openai.com/v1',
-      apiKey: 'secret',
-      models: const ['gpt-5.6'],
-      nativeAgentEnabled: false,
-    ),
+    config: AgentProviderConfig(nativeAgentEnabled: false),
     hostPolicies: const [],
   );