feat(desktop): isolate private data by account

product-source/hololake-native-desktop/src/main.tsx

@@ -718,6 +718,15 @@ function HoloLakeApp() {
       // 五湖开场：校验通过=第五域从湖面浮起，镜头沉入湖中再进场。
       setLoginRising(true)
       await new Promise((resolve) => setTimeout(resolve, 1300))
+      // 账号切换时先清空上一账号的内存投影，绝不让旧页面在新会话首帧闪现。
+      setPersonal(previewPersonal)
+      setKnowledge(previewKnowledge)
+      setCodeChannels(previewCode)
+      setActiveDocument(null)
+      setActiveChannel(null)
+      setCodeTree(null)
+      setActiveCodeFile(null)
+      setReceipts([])
       setRepoLogin({ username: receipt.username, host: receipt.host, domain: receipt.domain, signedInAtUnixMs: Date.now() })
       setLoginRising(false)
       setLoginPassword('')
@@ -726,6 +735,14 @@ function HoloLakeApp() {
   }
   const signOutRepo = async () => {
     try { await invoke('sign_out_code_repo_login') } catch { /* 登出以本机清场为准 */ }
+    setPersonal(previewPersonal)
+    setKnowledge(previewKnowledge)
+    setCodeChannels(previewCode)
+    setActiveDocument(null)
+    setActiveChannel(null)
+    setCodeTree(null)
+    setActiveCodeFile(null)
+    setReceipts([])
     setRepoLogin(null)
   }
   const initializeIdentity = async (event: React.FormEvent) => {