feat(webui): 重构WebUI样式并默认启用暗色主题

.claude/settings.local.json

@@ -2,7 +2,16 @@
   "permissions": {
     "allow": [
       "Bash(dir:*)",
-      "Bash(tree:*)"
+      "Bash(tree:*)",
+      "Bash(git checkout:*)",
+      "Bash(/home/congsh/.claude/plugins/cache/claude-plugins-official/ralph-loop/f1be96f0fb58/scripts/setup-ralph-loop.sh:*)",
+      "Bash(python3:*)",
+      "Bash(pip3 install:*)",
+      "Bash(playwright install:*)",
+      "mcp__plugin_playwright_playwright__browser_navigate",
+      "mcp__plugin_playwright_playwright__browser_install",
+      "Bash(./:*)",
+      "Bash(npx playwright install:*)"
     ]
   }
 }