feat: 深度研究支持独立新报告与原文改写，并完善沙箱、模型管理与全文改写

新报告不再覆盖当前文件卡片，写入时打开沙箱；步骤条仅在改写原文时位于卡片上方。同时补齐改写本地回退、模型管理与会商第三步相关改动。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend-web/src/core/system-settings/api.ts

@@ -314,7 +314,7 @@ export interface CustomThemePreset {
 }
 export type ViewMode = "card" | "list";
 export type LayoutMode = "full" | "compact";
-export type CompactShortcutParamType = "login" | "theme";
+export type CompactShortcutParamType = "login" | "theme" | "path";
 
 export interface CompactShortcutRouteParam {
   key: string;