refactor(erp-auth): implement precise login result detection with three outcomes

- Add waitForLoginResult() method using Promise.race to detect:
  - Success: .nc-workbench-icon element visible
  - Failure: '名称或密码错误' error text visible
  - Force login: click confirm button and re-detect
- Extract timeout constants (PAGE_LOAD_TIMEOUT, LOGIN_RESULT_TIMEOUT, FORCE_LOGIN_TIMEOUT)
- Improve error handling with clear error messages
- Add unit tests for class structure verification
- Fix test setup for Electron app mock

Fixes: ERP login success/failure detection was ambiguous

package.json

@@ -61,6 +61,7 @@
     "@vitejs/plugin-react": "^5.1.1",
     "@vitest/coverage-v8": "^4.0.18",
     "autoprefixer": "^10.4.27",
+    "dotenv": "^17.3.1",
     "electron": "^39.2.6",
     "electron-builder": "^26.0.12",
     "electron-vite": "^5.0.0",
@@ -74,9 +75,9 @@
     "react": "^19.2.1",
     "react-dom": "^19.2.1",
     "tailwindcss": "^4.2.1",
+    "tsx": "^4.19.3",
     "typescript": "^5.9.3",
     "vite": "^7.2.6",
-    "vitest": "^4.0.18",
-    "tsx": "^4.19.3"
+    "vitest": "^4.0.18"
   }
 }