feat(M8): FR-T4/T5/T6/W2/W6/W7 标签页/布局接线——固定标签悬停浮现关闭按钮(T4); tab-store updateScroll+restore恢复滚动位置(T5); tabbarVisible接线App+TitleBar切换按钮(T6/W6); winIsMaximized IPC+最大化/还原图标切换(W2); 极简模式隐藏TabBar(W7); layout-tabs E2E 3 项

packages/shared/src/types/ipc.ts

@@ -29,6 +29,7 @@ export const IPC = {
   graph: 'graph',
   winMinimize: 'win:minimize',
   winMaximize: 'win:maximize',
+  winIsMaximized: 'win:is-maximized',
   winClose: 'win:close',
   gpuInfo: 'gpu:info',
   copyMd: 'doc:copy-md',
@@ -66,6 +67,7 @@ export interface IpcMap {
   [IPC.graph]: { args: void; result: GraphData };
   [IPC.winMinimize]: { args: void; result: void };
   [IPC.winMaximize]: { args: void; result: void };
+  [IPC.winIsMaximized]: { args: void; result: boolean };
   [IPC.winClose]: { args: void; result: void };
   [IPC.gpuInfo]: { args: void; result: { softwareRendering: boolean; vendor: string; renderer: string } };
   [IPC.copyMd]: { args: { path: string }; result: string };