fix: 前端 HIGH/MEDIUM — timer 清理 + 历史持久化 + Error Boundary + console 移除

gui/src-frontend/src/hooks/useQrEncode.ts

@@ -1,6 +1,10 @@
-import { useCallback, useRef } from 'react';
+import { useCallback, useRef, useEffect } from 'react';
 import { invoke } from '@tauri-apps/api/core';
+import { Store } from '@tauri-apps/plugin-store';
 import { useQrState } from '../store/qrContext';
+import type { HistoryEntry } from '../types';
+
+const HISTORY_KEY = 'qr-history';
 
 interface QrResponse {
   svg: string;
@@ -15,6 +19,13 @@ export function useQrEncode() {
   const modeRef = useRef(state.mode);
   modeRef.current = state.mode;
 
+  // 组件卸载时清理定时器
+  useEffect(() => {
+    return () => {
+      if (timerRef.current) clearTimeout(timerRef.current);
+    };
+  }, []);
+
   const encode = useCallback((text: string) => {
     if (!text.trim()) {
       dispatch({ type: 'SET_PREVIEW', payload: null });
@@ -33,18 +44,26 @@ export function useQrEncode() {
         });
         dispatch({ type: 'SET_PREVIEW', payload: result });
 
-        // 保存到历史
-        dispatch({
-          type: 'ADD_HISTORY',
-          payload: {
-            id: Date.now().toString(),
-            mode: modeRef.current,
-            content: text,
-            timestamp: Date.now(),
-          },
-        });
+        // 保存到历史（内存 + 持久化）
+        const entryId = Date.now().toString();
+        const entry: HistoryEntry = {
+          id: entryId,
+          mode: modeRef.current,
+          content: text,
+          timestamp: Date.now(),
+        };
+        dispatch({ type: 'ADD_HISTORY', payload: entry });
+
+        // 持久化到 tauri-plugin-store
+        try {
+          const store = await Store.load('history.json');
+          const current = await store.get<HistoryEntry[]>(HISTORY_KEY) || [];
+          const updated = [entry, ...current].slice(0, 50);
+          await store.set(HISTORY_KEY, updated);
+          await store.save();
+        } catch { /* store 不可用时静默忽略 */ }
       } catch (e) {
-        console.error('QR 编码失败:', e);
+        // 编码失败已在 dispatch SET_PREVIEW(null) 中处理，无需额外日志
         dispatch({ type: 'SET_PREVIEW', payload: null });
       }
     }, 200);