feat(beaver): 完成Task Team功能v1实现，重构后端架构支持统一内核

新增内部Task系统，包括验证、反馈门控机制，实现自动质量验证
(通过率>=0.75)和用户反馈闭环(satisfied/revise/abandon)。

实现Agent Team v1协调器，支持sequence/parallel/dag执行策略，
sub-agent复用主AgentLoop，每个run使用独立memory snapshot。

建立Skill学习pipeline，包含draft/审核/发布/回滚完整生命周期，
通过Task验证通过且用户满意才生成学习候选。

重构目录结构，移除third_party依赖，建立统一engine内核，
所有agent共享运行时基础组件。

更新ContextBuilder清理provider消息字段，增强SkillContext版本管理，
集成TaskExecutionPlanner和TaskSkillResolver实现技能解析机制。

app-instance/frontend/app/(app)/status/page.tsx

@@ -11,8 +11,9 @@ import {
   Radio,
   Key,
   Loader2,
+  Settings2,
 } from 'lucide-react';
-import { getStatus, restartSystem } from '@/lib/api';
+import { getStatus, restartSystem, updateProviderConfig } from '@/lib/api';
 import {
   AlertDialog,
   AlertDialogAction,
@@ -26,10 +27,29 @@ import {
 import { Button } from '@/components/ui/button';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { Badge } from '@/components/ui/badge';
-import type { SystemStatus } from '@/types';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog';
+import { Input } from '@/components/ui/input';
+import { Label } from '@/components/ui/label';
+import { Switch } from '@/components/ui/switch';
+import type { ProviderStatus, SystemStatus } from '@/types';
 import { pickAppText } from '@/lib/i18n/core';
 import { useAppI18n } from '@/lib/i18n/provider';
 
+type ProviderFormState = {
+  enabled: boolean;
+  model: string;
+  apiKey: string;
+  apiBase: string;
+  requestTimeoutSeconds: string;
+};
+
 export default function StatusPage() {
   const { locale } = useAppI18n();
   const [status, setStatus] = useState<SystemStatus | null>(null);
@@ -38,6 +58,16 @@ export default function StatusPage() {
   const [restartDialogOpen, setRestartDialogOpen] = useState(false);
   const [restarting, setRestarting] = useState(false);
   const [restartError, setRestartError] = useState<string | null>(null);
+  const [selectedProvider, setSelectedProvider] = useState<ProviderStatus | null>(null);
+  const [providerForm, setProviderForm] = useState<ProviderFormState>(() => ({
+    enabled: false,
+    model: '',
+    apiKey: '',
+    apiBase: '',
+    requestTimeoutSeconds: '',
+  }));
+  const [savingProvider, setSavingProvider] = useState(false);
+  const [providerError, setProviderError] = useState<string | null>(null);
 
   const loadStatus = async () => {
     setLoading(true);
@@ -86,6 +116,46 @@ export default function StatusPage() {
     }
   };
 
+  const openProviderDialog = (provider: ProviderStatus) => {
+    setSelectedProvider(provider);
+    setProviderError(null);
+    setProviderForm({
+      enabled: Boolean(provider.enabled || provider.has_key),
+      model: status?.model || '',
+      apiKey: '',
+      apiBase: provider.api_base || provider.default_api_base || provider.detail || '',
+      requestTimeoutSeconds: '',
+    });
+  };
+
+  const handleSaveProvider = async () => {
+    if (!selectedProvider) return;
+    const providerId = selectedProvider.id || selectedProvider.name;
+    setSavingProvider(true);
+    setProviderError(null);
+    try {
+      const timeout = providerForm.requestTimeoutSeconds.trim()
+        ? Number(providerForm.requestTimeoutSeconds.trim())
+        : undefined;
+      if (timeout !== undefined && (!Number.isFinite(timeout) || timeout <= 0)) {
+        throw new Error(pickAppText(locale, '请求超时必须是正数', 'Request timeout must be a positive number'));
+      }
+      await updateProviderConfig(providerId, {
+        enabled: providerForm.enabled,
+        model: providerForm.model.trim() || undefined,
+        api_key: providerForm.apiKey.trim() || undefined,
+        api_base: providerForm.apiBase.trim() || undefined,
+        request_timeout_seconds: timeout,
+      });
+      await loadStatus();
+      setSelectedProvider(null);
+    } catch (err: any) {
+      setProviderError(err.message || pickAppText(locale, '保存提供商配置失败', 'Failed to save provider settings'));
+    } finally {
+      setSavingProvider(false);
+    }
+  };
+
   if (loading) {
     return (
       <div className="flex items-center justify-center py-20">
@@ -210,31 +280,137 @@ export default function StatusPage() {
           </CardTitle>
         </CardHeader>
         <CardContent>
-          <div className="grid grid-cols-2 md:grid-cols-3 gap-3">
+          <div className="grid grid-cols-1 sm:grid-cols-2 md:grid-cols-3 gap-3">
             {status.providers.map((p) => (
-              <div
-                key={p.name}
-                className="flex items-center gap-2 text-sm"
+              <button
+                key={p.id || p.name}
+                type="button"
+                onClick={() => openProviderDialog(p)}
+                className={[
+                  'group flex min-h-[76px] w-full items-start justify-between rounded-lg border p-3 text-left transition',
+                  p.active
+                    ? 'border-primary bg-primary/5 shadow-sm'
+                    : 'border-border bg-background hover:border-primary/50 hover:bg-muted/40',
+                ].join(' ')}
               >
-                {p.has_key ? (
-                  <CheckCircle2 className="w-4 h-4 text-green-500" />
-                ) : (
-                  <XCircle className="w-4 h-4 text-muted-foreground/40" />
-                )}
-                <span className={p.has_key ? '' : 'text-muted-foreground'}>
-                  {p.name}
-                </span>
-                {p.detail && (
-                  <span className="text-xs text-muted-foreground truncate">
-                    {p.detail}
+                <span className="min-w-0 space-y-1">
+                  <span className="flex items-center gap-2 text-sm font-medium">
+                    {p.has_key ? (
+                      <CheckCircle2 className="h-4 w-4 shrink-0 text-green-500" />
+                    ) : (
+                      <XCircle className="h-4 w-4 shrink-0 text-muted-foreground/40" />
+                    )}
+                    <span className={p.has_key ? 'truncate' : 'truncate text-muted-foreground'}>
+                      {providerLabel(p)}
+                    </span>
                   </span>
-                )}
-              </div>
+                  <span className="block truncate text-xs text-muted-foreground">
+                    {p.active
+                      ? pickAppText(locale, '当前默认', 'Current default')
+                      : p.enabled
+                        ? pickAppText(locale, '已启用', 'Enabled')
+                        : pickAppText(locale, '点击配置', 'Click to configure')}
+                  </span>
+                  {(p.detail || p.api_key_masked) && (
+                    <span className="block truncate text-xs text-muted-foreground">
+                      {p.api_key_masked || p.detail}
+                    </span>
+                  )}
+                </span>
+                <Settings2 className="mt-0.5 h-4 w-4 shrink-0 text-muted-foreground opacity-60 group-hover:text-primary" />
+              </button>
             ))}
           </div>
         </CardContent>
       </Card>
 
+      <Dialog open={Boolean(selectedProvider)} onOpenChange={(open) => !open && setSelectedProvider(null)}>
+        <DialogContent className="sm:max-w-[520px]">
+          <DialogHeader>
+            <DialogTitle>
+              {pickAppText(locale, '配置提供商', 'Configure provider')}
+              {selectedProvider ? ` · ${providerLabel(selectedProvider)}` : ''}
+            </DialogTitle>
+            <DialogDescription>
+              {pickAppText(locale, '启用后会把它设为当前实例默认提供商。API Key 留空会保留已保存的值。', 'When enabled, this becomes the default provider for this instance. Leave API key empty to keep the saved value.')}
+            </DialogDescription>
+          </DialogHeader>
+          <div className="space-y-5 py-2">
+            <div className="flex items-center justify-between rounded-lg border px-3 py-2">
+              <div>
+                <Label className="text-sm">{pickAppText(locale, '启用提供商', 'Enable provider')}</Label>
+                <p className="text-xs text-muted-foreground">
+                  {pickAppText(locale, '关闭会从配置中移除这个提供商', 'Turning this off removes this provider from config')}
+                </p>
+              </div>
+              <Switch
+                checked={providerForm.enabled}
+                onCheckedChange={(checked) => setProviderForm((prev) => ({ ...prev, enabled: checked }))}
+              />
+            </div>
+
+            <div className="grid gap-2">
+              <Label htmlFor="provider-model">{pickAppText(locale, '默认模型', 'Default model')}</Label>
+              <Input
+                id="provider-model"
+                value={providerForm.model}
+                onChange={(event) => setProviderForm((prev) => ({ ...prev, model: event.target.value }))}
+                placeholder="qwen-plus"
+                disabled={!providerForm.enabled}
+              />
+            </div>
+
+            <div className="grid gap-2">
+              <Label htmlFor="provider-api-key">API Key</Label>
+              <Input
+                id="provider-api-key"
+                type="password"
+                value={providerForm.apiKey}
+                onChange={(event) => setProviderForm((prev) => ({ ...prev, apiKey: event.target.value }))}
+                placeholder={selectedProvider?.api_key_masked || pickAppText(locale, '留空保持不变', 'Leave blank to keep existing')}
+                disabled={!providerForm.enabled || Boolean(selectedProvider?.is_oauth)}
+              />
+            </div>
+
+            <div className="grid gap-2">
+              <Label htmlFor="provider-api-base">API Base</Label>
+              <Input
+                id="provider-api-base"
+                value={providerForm.apiBase}
+                onChange={(event) => setProviderForm((prev) => ({ ...prev, apiBase: event.target.value }))}
+                placeholder={selectedProvider?.default_api_base || 'https://api.example.com/v1'}
+                disabled={!providerForm.enabled || Boolean(selectedProvider?.is_oauth)}
+              />
+            </div>
+
+            <div className="grid gap-2">
+              <Label htmlFor="provider-timeout">{pickAppText(locale, '请求超时（秒）', 'Request timeout (seconds)')}</Label>
+              <Input
+                id="provider-timeout"
+                inputMode="decimal"
+                value={providerForm.requestTimeoutSeconds}
+                onChange={(event) => setProviderForm((prev) => ({ ...prev, requestTimeoutSeconds: event.target.value }))}
+                placeholder={pickAppText(locale, '默认', 'Default')}
+                disabled={!providerForm.enabled}
+              />
+            </div>
+
+            {providerError ? (
+              <p className="text-sm text-destructive">{providerError}</p>
+            ) : null}
+          </div>
+          <DialogFooter>
+            <Button variant="outline" onClick={() => setSelectedProvider(null)} disabled={savingProvider}>
+              {pickAppText(locale, '取消', 'Cancel')}
+            </Button>
+            <Button onClick={handleSaveProvider} disabled={savingProvider}>
+              {savingProvider ? <Loader2 className="mr-2 h-4 w-4 animate-spin" /> : null}
+              {pickAppText(locale, '保存', 'Save')}
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
+
       {/* Channels */}
       <Card>
         <CardHeader>
@@ -307,3 +483,7 @@ function InfoRow({
     </div>
   );
 }
+
+function providerLabel(provider: ProviderStatus): string {
+  return provider.label || provider.name;
+}