Use BMCLAPI mirror & update build

Route Minecraft/Fabric/Forge downloads through BMCLAPI mirror and update installer logic. Added mirror rewrite utility (rewriteToMirror), mirror-aware downloadFile, and mirrorFetch; switched version manifest and metadata endpoints to bmclapi2.bangbang93.com and wired maven/assets hosts into xmcl/installer calls. Cleaned up compiled electron JS files and consolidated runtime files under electron-dist; updated electron-builder.yml (compression, asar, NSIS settings, license/installer assets and languages). Minor env/path changes (VITE_APP_ICON paths), added .npmrc (electron_mirror), new Koring.yml, pnpm-workspace and public installer assets. Also added/updated multiple frontend pages, store components, and TypeScript handlers to integrate the changes.

electron/handlers/system.ts

@@ -2,7 +2,7 @@ import electron from 'electron';
 import { execSync } from 'child_process';
 import * as os from 'os';
 
-const { ipcMain, app } = electron;
+const { ipcMain, app, shell } = electron;
 
 function getBiosId(): string {
   if (process.platform !== 'win32') return 'N/A (non-Windows)';
@@ -60,4 +60,14 @@ export function registerSystemHandlers() {
       return { success: false, data: null, error: String(e) };
     }
   });
+
+  // 在系统文件管理器中打开指定路径（用于"打开游戏目录"等操作）
+  ipcMain.handle('system:open-path', async (_event, payload: { path: string }) => {
+    try {
+      const error = await shell.openPath(payload.path);
+      return { success: !error, data: { error }, error: error || null };
+    } catch (e: unknown) {
+      return { success: false, data: null, error: String(e) };
+    }
+  });
 }