fix(build): 修复 Windows 打包阻塞问题

- 修正 self-improving-agent skill 的 repoPath，指向包含 SKILL.md 的子目录
- 强制 electron-builder 在 Windows 上识别 pnpm，避免 fallback 到 npm 导致依赖收集极慢

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

resources/skills/preinstalled-manifest.json

@@ -43,7 +43,7 @@
     {
       "slug": "self-improving-agent",
       "repo": "peterskoett/self-improving-agent",
-      "repoPath": ".",
+      "repoPath": "self-improving-agent",
       "ref": "master",
       "version": "main",
       "autoEnable": true

scripts/run-electron-builder.mjs

@@ -32,7 +32,13 @@ function spawnElectronBuilder() {
   return spawn(ELECTRON_BUILDER_BIN, args, {
     cwd: ROOT,
     stdio: 'inherit',
-    env: process.env,
+    env: {
+      ...process.env,
+      // Force electron-builder to detect pnpm on Windows where the packageManager
+      // field is sometimes ignored and it falls back to npm (which chokes on
+      // pnpm's node_modules layout and becomes extremely slow).
+      npm_config_user_agent: process.env.npm_config_user_agent || 'pnpm/10.33.4',
+    },
     shell: process.platform === 'win32',
   });
 }