重构项目，方便开发

frontend-vue/src/shared/bridges/pywebview.ts

@@ -0,0 +1,24 @@
+export interface PywebviewApi {
+  select_brand_xlsx_files?: () => Promise<string[]>
+  select_brand_folder?: () => Promise<string | null>
+  select_folder?: () => Promise<string | null>
+  save_template_xlsx?: () => Promise<{ success: boolean; path?: string; error?: string }>
+  save_template_zip?: () => Promise<{ success: boolean; path?: string; error?: string }>
+  save_file_from_url?: (url: string, filename: string) => Promise<{ success: boolean; path?: string; error?: string }>
+}
+
+declare global {
+  interface Window {
+    pywebview?: {
+      api?: PywebviewApi
+    }
+  }
+}
+
+export function getPywebviewApi() {
+  return window.pywebview?.api
+}
+
+export function hasPywebview() {
+  return Boolean(getPywebviewApi())
+}