🐛 fix(windows-upgrade): 修复Windows升级后连接列表丢失问题

- 启动参数新增固定 WebviewUserDataPath 到 %APPDATA%/GoNavi/WebView2
- 首次启动自动迁移历史 WebView 数据目录
- 保留现有存储键，避免破坏已落盘配置
- 前端持久化读取增加历史结构兼容
- refs #125

frontend/src/store.ts

@@ -206,10 +206,27 @@ const sanitizeConnectionConfig = (value: unknown): ConnectionConfig => {
   return safeConfig;
 };
 
+const resolveConnectionConfigPayload = (raw: Record<string, unknown>): unknown => {
+  if (raw.config && typeof raw.config === 'object') {
+    return raw.config;
+  }
+  // 兼容历史/导入场景：连接对象可能是扁平结构（无 config 包装）。
+  const hasLegacyFlatConfig =
+    raw.type !== undefined ||
+    raw.host !== undefined ||
+    raw.port !== undefined ||
+    raw.user !== undefined ||
+    raw.database !== undefined;
+  if (hasLegacyFlatConfig) {
+    return raw;
+  }
+  return undefined;
+};
+
 const sanitizeSavedConnection = (value: unknown, index: number): SavedConnection | null => {
   if (!value || typeof value !== 'object') return null;
   const raw = value as Record<string, unknown>;
-  const config = sanitizeConnectionConfig(raw.config);
+  const config = sanitizeConnectionConfig(resolveConnectionConfigPayload(raw));
   const id = toTrimmedString(raw.id, `conn-${index + 1}`) || `conn-${index + 1}`;
   const fallbackName = config.host ? `${config.type}-${config.host}` : `连接-${index + 1}`;
   const name = toTrimmedString(raw.name, fallbackName) || fallbackName;
@@ -392,6 +409,17 @@ const sanitizeAppearance = (
   return nextAppearance;
 };
 
+const unwrapPersistedAppState = (persistedState: unknown): Record<string, unknown> => {
+  if (!persistedState || typeof persistedState !== 'object') {
+    return {};
+  }
+  const raw = persistedState as Record<string, unknown>;
+  if (raw.state && typeof raw.state === 'object') {
+    return raw.state as Record<string, unknown>;
+  }
+  return raw;
+};
+
 export const useStore = create<AppState>()(
   persist(
     (set) => ({
@@ -544,10 +572,7 @@ export const useStore = create<AppState>()(
       name: 'lite-db-storage', // name of the item in the storage (must be unique)
       version: 3,
       migrate: (persistedState: unknown, version: number) => {
-        if (!persistedState || typeof persistedState !== 'object') {
-          return persistedState as AppState;
-        }
-        const state = persistedState as Partial<AppState>;
+        const state = unwrapPersistedAppState(persistedState) as Partial<AppState>;
         const nextState: Partial<AppState> = { ...state };
         nextState.connections = sanitizeConnections(state.connections);
         nextState.savedQueries = sanitizeSavedQueries(state.savedQueries);
@@ -560,9 +585,7 @@ export const useStore = create<AppState>()(
         return nextState as AppState;
       },
       merge: (persistedState, currentState) => {
-        const state = (persistedState && typeof persistedState === 'object')
-          ? persistedState as Partial<AppState>
-          : {};
+        const state = unwrapPersistedAppState(persistedState) as Partial<AppState>;
         return {
           ...currentState,
           ...state,

main.go

@@ -41,6 +41,7 @@ func main() {
 			BackdropType:                      windows.Acrylic,
 			DisableWindowIcon:                 false,
 			DisableFramelessWindowDecorations: false,
+			WebviewUserDataPath:               resolveWindowsWebviewUserDataPath(),
 		},
 		Mac: &mac.Options{
 			WebviewIsTransparent: true,

main_windows_webview_userdata.go

@@ -0,0 +1,123 @@
+//go:build windows
+
+package main
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+func resolveWindowsWebviewUserDataPath() string {
+	appDataDir := strings.TrimSpace(os.Getenv("APPDATA"))
+	if appDataDir == "" {
+		return ""
+	}
+
+	targetDir := filepath.Join(appDataDir, "GoNavi", "WebView2")
+	_ = migrateLegacyWindowsWebviewUserData(appDataDir, targetDir)
+	return targetDir
+}
+
+func migrateLegacyWindowsWebviewUserData(appDataDir, targetDir string) error {
+	if dirHasContent(targetDir) {
+		return nil
+	}
+
+	exeName := "GoNavi.exe"
+	if exePath, err := os.Executable(); err == nil {
+		base := strings.TrimSpace(filepath.Base(exePath))
+		if base != "" {
+			exeName = base
+		}
+	}
+	exeBase := strings.TrimSuffix(exeName, filepath.Ext(exeName))
+
+	candidates := []string{
+		filepath.Join(appDataDir, exeName),
+		filepath.Join(appDataDir, exeBase),
+		filepath.Join(appDataDir, "GoNavi.exe"),
+		filepath.Join(appDataDir, "GoNavi"),
+	}
+
+	seen := make(map[string]struct{}, len(candidates))
+	for _, candidate := range candidates {
+		src := filepath.Clean(strings.TrimSpace(candidate))
+		if src == "" || strings.EqualFold(src, filepath.Clean(targetDir)) {
+			continue
+		}
+		key := strings.ToLower(src)
+		if _, exists := seen[key]; exists {
+			continue
+		}
+		seen[key] = struct{}{}
+
+		if !dirHasContent(src) {
+			continue
+		}
+		return copyDirTree(src, targetDir)
+	}
+	return nil
+}
+
+func dirHasContent(path string) bool {
+	info, err := os.Stat(path)
+	if err != nil || !info.IsDir() {
+		return false
+	}
+	entries, err := os.ReadDir(path)
+	return err == nil && len(entries) > 0
+}
+
+func copyDirTree(srcDir, dstDir string) error {
+	if err := os.MkdirAll(dstDir, 0o755); err != nil {
+		return err
+	}
+
+	return filepath.WalkDir(srcDir, func(srcPath string, d os.DirEntry, walkErr error) error {
+		if walkErr != nil {
+			return walkErr
+		}
+		relPath, err := filepath.Rel(srcDir, srcPath)
+		if err != nil {
+			return err
+		}
+		if relPath == "." {
+			return nil
+		}
+		dstPath := filepath.Join(dstDir, relPath)
+
+		if d.IsDir() {
+			return os.MkdirAll(dstPath, 0o755)
+		}
+
+		info, err := d.Info()
+		if err != nil {
+			return err
+		}
+		return copyFileWithMode(srcPath, dstPath, info.Mode())
+	})
+}
+
+func copyFileWithMode(srcPath, dstPath string, mode os.FileMode) error {
+	srcFile, err := os.Open(srcPath)
+	if err != nil {
+		return err
+	}
+	defer srcFile.Close()
+
+	if err := os.MkdirAll(filepath.Dir(dstPath), 0o755); err != nil {
+		return err
+	}
+	dstFile, err := os.OpenFile(dstPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, mode.Perm())
+	if err != nil {
+		return err
+	}
+	defer dstFile.Close()
+
+	if _, err := io.Copy(dstFile, srcFile); err != nil {
+		return err
+	}
+	return nil
+}

main_windows_webview_userdata_stub.go

@@ -0,0 +1,7 @@
+//go:build !windows
+
+package main
+
+func resolveWindowsWebviewUserDataPath() string {
+	return ""
+}