refactor: replace co-authored setting with flexible common config snippet feature

- Replace single "disable co-authored" checkbox with universal "common config snippet" functionality
- Add localStorage persistence for common config snippets
- Implement deep merge/remove operations for complex JSON structures
- Add modal editor for managing common config snippets
- Optimize performance with custom deepClone function instead of JSON.parse/stringify
- Fix deep remove logic to only delete matching values
- Improve error handling and validation for JSON snippets

src/components/ProviderForm/ClaudeConfigEditor.tsx

@@ -4,17 +4,24 @@ import JsonEditor from "../JsonEditor";
 interface ClaudeConfigEditorProps {
   value: string;
   onChange: (value: string) => void;
-  disableCoAuthored: boolean;
-  onCoAuthoredToggle: (checked: boolean) => void;
+  useCommonConfig: boolean;
+  onCommonConfigToggle: (checked: boolean) => void;
+  commonConfigSnippet: string;
+  onCommonConfigSnippetChange: (value: string) => void;
+  commonConfigError: string;
 }
 
 const ClaudeConfigEditor: React.FC<ClaudeConfigEditorProps> = ({
   value,
   onChange,
-  disableCoAuthored,
-  onCoAuthoredToggle,
+  useCommonConfig,
+  onCommonConfigToggle,
+  commonConfigSnippet,
+  onCommonConfigSnippetChange,
+  commonConfigError,
 }) => {
   const [isDarkMode, setIsDarkMode] = useState(false);
+  const [isCommonConfigModalOpen, setIsCommonConfigModalOpen] = useState(false);
 
   useEffect(() => {
     // 检测暗色模式
@@ -40,6 +47,16 @@ const ClaudeConfigEditor: React.FC<ClaudeConfigEditorProps> = ({
 
     return () => observer.disconnect();
   }, []);
+
+  useEffect(() => {
+    if (commonConfigError && !isCommonConfigModalOpen) {
+      setIsCommonConfigModalOpen(true);
+    }
+  }, [commonConfigError, isCommonConfigModalOpen]);
+
+  const closeModal = () => {
+    setIsCommonConfigModalOpen(false);
+  };
   return (
     <div className="space-y-2">
       <div className="flex items-center justify-between">
@@ -52,13 +69,27 @@ const ClaudeConfigEditor: React.FC<ClaudeConfigEditorProps> = ({
         <label className="inline-flex items-center gap-2 text-sm text-gray-500 dark:text-gray-400 cursor-pointer">
           <input
             type="checkbox"
-            checked={disableCoAuthored}
-            onChange={(e) => onCoAuthoredToggle(e.target.checked)}
+            checked={useCommonConfig}
+            onChange={(e) => onCommonConfigToggle(e.target.checked)}
             className="w-4 h-4 text-blue-500 bg-white dark:bg-gray-800 border-gray-200 dark:border-gray-700 rounded focus:ring-blue-500 dark:focus:ring-blue-400 focus:ring-2"
           />
-          禁止 Claude Code 签名
+          写入通用配置
         </label>
       </div>
+      <div className="flex items-center justify-end">
+        <button
+          type="button"
+          onClick={() => setIsCommonConfigModalOpen(true)}
+          className="text-xs text-blue-500 dark:text-blue-400 hover:underline"
+        >
+          编辑通用配置
+        </button>
+      </div>
+      {commonConfigError && !isCommonConfigModalOpen && (
+        <p className="text-xs text-red-500 dark:text-red-400 text-right">
+          {commonConfigError}
+        </p>
+      )}
       <JsonEditor
         value={value}
         onChange={onChange}
@@ -74,6 +105,55 @@ const ClaudeConfigEditor: React.FC<ClaudeConfigEditorProps> = ({
       <p className="text-xs text-gray-500 dark:text-gray-400">
         完整的 Claude Code settings.json 配置内容
       </p>
+      {isCommonConfigModalOpen && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center">
+          <div
+            className="absolute inset-0 bg-black/40"
+            onClick={closeModal}
+          />
+          <div className="relative z-10 w-full max-w-2xl mx-4 bg-white dark:bg-gray-900 rounded-xl shadow-lg border border-gray-200 dark:border-gray-800">
+            <div className="flex items-center justify-between px-5 py-4 border-b border-gray-200 dark:border-gray-800">
+              <div>
+                <h2 className="text-sm font-semibold text-gray-900 dark:text-gray-100">
+                  编辑通用配置片段
+                </h2>
+                <p className="text-xs text-gray-500 dark:text-gray-400">
+                  该片段会在勾选“写入通用配置”时合并到 settings.json 中
+                </p>
+              </div>
+              <button
+                type="button"
+                onClick={closeModal}
+                className="text-xs text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-200"
+              >
+                关闭
+              </button>
+            </div>
+            <div className="px-5 py-4 space-y-2">
+              <JsonEditor
+                value={commonConfigSnippet}
+                onChange={onCommonConfigSnippetChange}
+                darkMode={isDarkMode}
+                rows={12}
+              />
+              {commonConfigError && (
+                <p className="text-xs text-red-500 dark:text-red-400">
+                  {commonConfigError}
+                </p>
+              )}
+            </div>
+            <div className="flex justify-end gap-2 px-5 py-4 border-t border-gray-200 dark:border-gray-800 bg-gray-50 dark:bg-gray-950">
+              <button
+                type="button"
+                onClick={closeModal}
+                className="px-3 py-1.5 text-xs font-medium text-gray-600 dark:text-gray-300 hover:text-gray-900 dark:hover:text-gray-100"
+              >
+                完成
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
     </div>
   );
 };