fix: resolve 6 remaining defects (P2-18, P2-21, P3-04, P3-05, P3-06, P3-02)

- P2-18: TOTP QR code local generation via qrcode lib (no external service)
- P2-21: Suspend foreign LLM providers (OpenAI/Anthropic/Gemini) for early stage
- P3-04: get_progress() now calculates actual percentage from completed/total steps
- P3-05: saveSaaSSession calls now have .catch() error logging
- P3-06: SaaS relay chatStream passes session_key/agent_id to backend
- P3-02: Whiteboard unification plan document created

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

desktop/src/components/SaaS/TOTPSettings.tsx

@@ -1,4 +1,5 @@
-import { useState } from 'react';
+import { useState, useEffect } from 'react';
+import QRCode from 'qrcode';
 import { useSaaSStore } from '../../store/saasStore';
 import { Shield, ShieldCheck, ShieldOff, Copy, Check, Loader2, AlertCircle, X } from 'lucide-react';
 
@@ -103,14 +104,8 @@ export function TOTPSettings() {
           使用 Google Authenticator / Authy 扫描下方二维码，然后输入验证码完成绑定。
         </p>
 
-        {/* QR Code */}
-        <div className="flex flex-col items-center gap-3 py-2">
-          <img
-            src={`https://api.qrserver.com/v1/create-qr-code/?data=${encodeURIComponent(totpSetupData.otpauth_uri)}&size=200x200`}
-            alt="TOTP QR Code"
-            className="w-48 h-48 border border-gray-200 rounded-lg"
-          />
-        </div>
+        {/* QR Code — P2-18: Generated locally, no external service */}
+        <LocalQRCode data={totpSetupData.otpauth_uri} />
 
         {/* Manual secret */}
         <div>
@@ -283,3 +278,40 @@ export function TOTPSettings() {
     </div>
   );
 }
+
+/** P2-18: Local QR code generation — no external service, no secret leakage */
+function LocalQRCode({ data }: { data: string }) {
+  const [src, setSrc] = useState<string>('');
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    let cancelled = false;
+    QRCode.toDataURL(data, { width: 200, margin: 1, color: { dark: '#000', light: '#fff' } })
+      .then((url) => { if (!cancelled) setSrc(url); })
+      .catch((e) => { if (!cancelled) setError(String(e)); });
+    return () => { cancelled = true; };
+  }, [data]);
+
+  if (error) {
+    return (
+      <div className="flex flex-col items-center gap-2 py-2 text-red-500 text-xs">
+        <AlertCircle className="w-8 h-8" />
+        <span>QR 生成失败，请使用下方密钥手动输入</span>
+      </div>
+    );
+  }
+
+  if (!src) {
+    return (
+      <div className="w-48 h-48 flex items-center justify-center border border-gray-200 rounded-lg">
+        <Loader2 className="w-6 h-6 animate-spin text-gray-400" />
+      </div>
+    );
+  }
+
+  return (
+    <div className="flex flex-col items-center gap-3 py-2">
+      <img src={src} alt="TOTP QR Code" className="w-48 h-48 border border-gray-200 rounded-lg" />
+    </div>
+  );
+}

desktop/src/components/Settings/ModelsAPI.tsx

@@ -38,18 +38,20 @@ interface EmbeddingProvider {
 
 // 可用的 Provider 列表
 // 注意: Coding Plan 是专为编程助手设计的优惠套餐，使用专用端点
+// P2-21: 外国模型 (OpenAI, Anthropic, Gemini) 暂停支持，标记为 suspended
 const AVAILABLE_PROVIDERS = [
   // === Coding Plan 专用端点 (推荐用于编程场景) ===
   { id: 'kimi-coding', name: 'Kimi Coding Plan', baseUrl: 'https://api.kimi.com/coding/v1' },
   { id: 'qwen-coding', name: '百炼 Coding Plan', baseUrl: 'https://coding.dashscope.aliyuncs.com/v1' },
   { id: 'zhipu-coding', name: '智谱 GLM Coding Plan', baseUrl: 'https://open.bigmodel.cn/api/coding/paas/v4' },
-  // === 标准 API 端点 ===
+  // === 标准 API 端点 (国内) ===
   { id: 'kimi', name: 'Kimi (标准 API)', baseUrl: 'https://api.moonshot.cn/v1' },
   { id: 'zhipu', name: '智谱 (标准 API)', baseUrl: 'https://open.bigmodel.cn/api/paas/v4' },
   { id: 'qwen', name: '百炼/通义千问 (标准)', baseUrl: 'https://dashscope.aliyuncs.com/compatible-mode/v1' },
   { id: 'deepseek', name: 'DeepSeek', baseUrl: 'https://api.deepseek.com/v1' },
-  { id: 'openai', name: 'OpenAI', baseUrl: 'https://api.openai.com/v1' },
-  { id: 'anthropic', name: 'Anthropic', baseUrl: 'https://api.anthropic.com' },
+  // === 暂停支持 (P2-21: 前期不使用非国内大模型) ===
+  { id: 'openai', name: 'OpenAI (暂停支持)', baseUrl: 'https://api.openai.com/v1', suspended: true },
+  { id: 'anthropic', name: 'Anthropic (暂停支持)', baseUrl: 'https://api.anthropic.com', suspended: true },
   { id: 'custom', name: '自定义', baseUrl: '' },
 ];
 
@@ -663,7 +665,7 @@ export function ModelsAPI() {
                   onChange={(e) => handleProviderChange(e.target.value)}
                   className="w-full px-3 py-2 border border-gray-200 dark:border-gray-600 rounded-lg text-sm bg-white dark:bg-gray-700 text-gray-900 dark:text-white focus:outline-none focus:ring-2 focus:ring-orange-500"
                 >
-                  {AVAILABLE_PROVIDERS.map((p) => (
+                  {AVAILABLE_PROVIDERS.filter((p) => !(p as any).suspended).map((p) => (
                     <option key={p.id} value={p.id}>{p.name}</option>
                   ))}
                 </select>