feat: add ERP login debug tool with documentation

Add interactive debugging tool for ERP login flow analysis:
- Add tsx dependency for TypeScript script execution
- Add npm scripts: debug:erp-login and debug:config-path
- Add erp-login-debug.ts with automated login and element inspection
- Add comprehensive usage guide and quick reference documentation

The debug tool automates ERP login and provides pause points for
manual element inspection using browser DevTools or Playwright Inspector.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

package.json

@@ -24,7 +24,9 @@
     "test:coverage": "vitest run --coverage",
     "test:e2e": "playwright test",
     "test:e2e:ui": "playwright test --ui",
-    "test:e2e:report": "playwright show-report"
+    "test:e2e:report": "playwright show-report",
+    "debug:erp-login": "tsx src/main/tools/erp-login-debug.ts",
+    "debug:config-path": "tsx src/main/tools/config-path-debug.ts"
   },
   "dependencies": {
     "@electron-toolkit/preload": "^3.0.2",
@@ -74,6 +76,7 @@
     "tailwindcss": "^4.2.1",
     "typescript": "^5.9.3",
     "vite": "^7.2.6",
-    "vitest": "^4.0.18"
+    "vitest": "^4.0.18",
+    "tsx": "^4.19.3"
   }
 }