chore(test): harden e2e/lighthouse tooling and ignore tool cache

- Playwright：firefox/webkit 使用空 storageState，消除 newContext 阶段浏览器
  兼容噪声；路径以配置目录为基准兼容多种调用方式
- Lighthouse：lighthouserc 补 chromeFlags（--disable-crash-reporter --no-sandbox
  --headless=new），规避 TRAE 沙箱对 Crashpad 目录的拦截
- .gitignore：忽略 .impeccable 评审工具缓存

.gitignore

@@ -314,6 +314,7 @@ dogfood-bain/
 # agent & skill artifacts
 .nova-loop/
 .qoder/
+.impeccable/
 .superpowers/brainstorm/
 sessions/
 

config/test/lighthouserc.json

@@ -15,6 +15,7 @@
       ],
       "settings": {
         "preset": "desktop",
+        "chromeFlags": ["--disable-crash-reporter", "--no-sandbox", "--headless=new"],
         "onlyCategories": [
           "performance",
           "accessibility",

e2e/playwright.config.ts

@@ -74,6 +74,7 @@ export default defineConfig({
       use: {
         ...devices['Desktop Firefox'],
         viewport: { width: 1280, height: 800 },
+        storageState: './storageState.firefox.json',
       },
       testMatch: 'visual-regression.spec.ts',
     },
@@ -82,6 +83,7 @@ export default defineConfig({
       use: {
         ...devices['Desktop Safari'],
         viewport: { width: 1280, height: 800 },
+        storageState: './storageState.firefox.json',
       },
       testMatch: 'visual-regression.spec.ts',
     },
@@ -102,12 +104,12 @@ export default defineConfig({
     },
     {
       name: 'firefox',
-      use: { ...devices['Desktop Firefox'] },
+      use: { ...devices['Desktop Firefox'], storageState: './storageState.firefox.json' },
       testIgnore: 'visual-regression.spec.ts',
     },
     {
       name: 'webkit',
-      use: { ...devices['Desktop Safari'] },
+      use: { ...devices['Desktop Safari'], storageState: './storageState.firefox.json' },
       testIgnore: 'visual-regression.spec.ts',
     },
   ],

e2e/storageState.firefox.json

@@ -0,0 +1,4 @@
+{
+  "cookies": [],
+  "origins": []
+}