增加单一源保护全局策略

apps/web/src/pages/admin/RuntimePoliciesPanel.tsx

@@ -6,7 +6,7 @@ import { Badge, Button, Card, CardContent, CardHeader, CardTitle, ConfirmDialog,
 import type { LoadState } from '../../types';
 
 type RuntimePanelTab = 'model' | 'runner';
-type RunnerPolicyStrategy = 'failover' | 'hardStop' | 'priorityDemote';
+type RunnerPolicyStrategy = 'failover' | 'hardStop' | 'priorityDemote' | 'singleSource';
 
 type RuntimePolicyForm = {
   policyKey: string;
@@ -54,6 +54,7 @@ type RunnerPolicyForm = {
   priorityDemoteCodes: string[];
   priorityDemoteStatusCodes: string[];
   priorityDemoteKeywords: string[];
+  singleSourceProtectionEnabled: boolean;
   metadataJson: string;
   status: string;
 };
@@ -353,6 +354,13 @@ function RunnerPolicyEditor(props: {
       enabled: props.form.priorityDemoteEnabled,
       icon: <Gauge size={15} />,
     },
+    {
+      value: 'singleSource' as const,
+      title: '单一源保护',
+      description: '只有一个可用源时跳过自动禁用和冷却',
+      enabled: props.form.singleSourceProtectionEnabled,
+      icon: <ShieldCheck size={15} />,
+    },
   ];
   const activeDefinition = strategyDefinitions.find((item) => item.value === activeStrategy) ?? strategyDefinitions[0];
 
@@ -455,6 +463,17 @@ function RunnerPolicyEditor(props: {
                   <KeywordField label="降级关键词" value={props.form.priorityDemoteKeywords} onChange={(value) => patch({ priorityDemoteKeywords: value })} />
                 </div>
               )}
+
+              {activeStrategy === 'singleSource' && (
+                <div className="runtimePolicyRows runnerPolicyDetailRows">
+                  <Toggle
+                    checked={props.form.singleSourceProtectionEnabled}
+                    label="启用单一源保护"
+                    onChange={(checked) => patch({ singleSourceProtectionEnabled: checked })}
+                  />
+                  <span className="runtimeFieldHint spanTwo">本次调度只有一个可用源时，命中自动禁用、运行策略冷却或故障切换冷却动作都只记录保护事件，不修改平台或模型状态。</span>
+                </div>
+              )}
             </div>
           </div>
 
@@ -554,6 +573,7 @@ function runnerPolicyToForm(policy: GatewayRunnerPolicy | null): RunnerPolicyFor
   const failover = readObject(policy?.failoverPolicy);
   const hardStop = readObject(policy?.hardStopPolicy);
   const priorityDemote = readObject(policy?.priorityDemotePolicy);
+  const singleSource = readObject(policy?.singleSourcePolicy);
   return {
     name: policy?.name ?? '默认全局调度策略',
     description: policy?.description ?? '控制多个候选平台之间的故障切换；模型运行策略只可覆盖 failoverPolicy，不能覆盖 hardStopPolicy。',
@@ -579,6 +599,7 @@ function runnerPolicyToForm(policy: GatewayRunnerPolicy | null): RunnerPolicyFor
     priorityDemoteCodes: tagsFromValue(priorityDemote.codes ?? ['network', 'timeout', 'stream_read_error', 'rate_limit', 'server_error', 'overloaded']),
     priorityDemoteStatusCodes: tagsFromValue(priorityDemote.statusCodes ?? [408, 429, 500, 502, 503, 504]),
     priorityDemoteKeywords: tagsFromValue(priorityDemote.keywords ?? ['timeout', 'network', 'rate_limit', 'overloaded', 'temporarily_unavailable', 'server_error', '429', '5xx']),
+    singleSourceProtectionEnabled: readBool(singleSource.enabled, true),
     metadataJson: JSON.stringify(policy?.metadata ?? {}, null, 2),
     status: policy?.status ?? 'active',
   };
@@ -617,6 +638,9 @@ function runnerFormToPayload(form: RunnerPolicyForm): GatewayRunnerPolicyUpsertR
       statusCodes: parseNumberTags(form.priorityDemoteStatusCodes),
       keywords: cleanTags(form.priorityDemoteKeywords),
     },
+    singleSourcePolicy: {
+      enabled: form.singleSourceProtectionEnabled,
+    },
     metadata: parseJson(form.metadataJson),
     status: form.status.trim() || 'active',
   };