修复客户端常用设置读写卡顿

移除常用设置读取和保存后的外部诊断调用
减少配置读取时的重复权限修复和保存后的重复回读
补充常用设置无需外部诊断的原因注释

apps/ai-game-creator-shell/src-tauri/src/commands.rs

@@ -2037,7 +2037,10 @@ fn persist_game_creator_app_config(
     let path = writable_game_creator_config_path()?;
     let content = serialize_game_creator_app_config_for_renderer_write(&config)?;
     write_game_creator_config_atomically(&path, &format!("{content}\n"))?;
-    game_creator_app_config_view(load_game_creator_app_config()?)
+    // `config` is already normalized and is exactly what was persisted.
+    // Avoid reloading it here: a reload repeats the Windows private-path and
+    // ACL checks and made saving the settings panel appear to hang.
+    game_creator_app_config_view(config)
 }
 
 #[tauri::command]

apps/ai-game-creator-shell/src-tauri/src/config.rs

@@ -3272,9 +3272,10 @@ pub(crate) fn configure_game_creator_runtime_config_dir(
     Ok(())
 }
 
-/// Validates a persisted AGC config file without following links. Existing
-/// regular files are tightened through the same Windows owner/DACL gate used
-/// by credential files before any read is allowed.
+/// Validates a persisted AGC config file without following links.
+///
+/// Reading configuration must remain read-only. ACL hardening is performed
+/// when the file is created or replaced, not on every settings-panel read.
 fn validate_game_creator_config_file_entry(path: &Path) -> Result<bool, String> {
     #[cfg(windows)]
     validate_game_creator_private_path_ancestors_with_auto_elevation(path, "客户端配置文件")?;
@@ -3293,8 +3294,6 @@ fn validate_game_creator_config_file_entry(path: &Path) -> Result<bool, String>
     if metadata.file_type().is_symlink() || !metadata.is_file() {
         return Err("客户端配置文件必须是普通文件，不能是链接或其他对象".to_string());
     }
-    #[cfg(windows)]
-    secure_windows_game_creator_path_for_current_user_with_auto_elevation(path, false, true)?;
     Ok(true)
 }