feat(w5): ship v2.0.0 platform sync, undo persistence, and updates

Co-authored-by: Cursor <cursoragent@cursor.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "bilin",
-  "version": "1.5.0",
+  "version": "2.0.0",
   "description": "笔临 - 长篇创作智能协作平台",
   "main": "./out/main/index.js",
   "type": "module",
@@ -34,6 +34,8 @@
     "diff-match-patch": "^1.0.5",
     "docx": "^9.7.1",
     "electron": "^36.9.0",
+    "electron-log": "^5.4.4",
+    "electron-updater": "^6.8.9",
     "extract-zip": "^2.0.1",
     "i18next": "^24.2.3",
     "jotai": "^2.12.1",