推进 INI 面板 shell handoff mount workflow helper

wasm-port/docs/panel-entry.md

@@ -32,6 +32,7 @@ import {
   createIniPanelShellSessionHandoffPackageMountState,
   createIniPanelShellSessionHandoffMountDomContract,
   createIniPanelShellSessionHandoffMountDomReadiness,
+  mountIniPanelShellSessionHandoff,
   renderIniPanelShellSessionHandoffMountState,
   createIniPanelShellSessionHandoffPackageReport,
   createIniPanelShellSessionHandoffPackageRenderState,
@@ -235,6 +236,10 @@ row dataset keys, and render-result fields before rendering into shell-owned
 DOM. Use `createIniPanelShellSessionHandoffMountDomReadiness()` or
 `linuxCncIniPanelLaunchApi.getShellSessionHandoffMountDomReadiness()` to check
 that the required document and nodes exist before calling the renderer. Use
+`mountIniPanelShellSessionHandoff()` or
+`linuxCncIniPanelLaunchApi.mountShellSessionHandoff()` when an outer shell
+needs one browser-side workflow result containing the contract, DOM readiness,
+mount render-state, renderer result, and any mount error as data. Use
 `renderIniPanelShellSessionHandoffMountState()` or
 `linuxCncIniPanelLaunchApi.renderShellSessionHandoffMountState()` when an outer
 shell needs the shared read-only DOM renderer for those rows. The launch page
@@ -244,9 +249,9 @@ the control page.
 The browser workflow smoke
 `tests/browser/ini_panel_shell_integration_workflow_smoke.html` verifies the
 same external shell handoff: read integration manifest, pass readiness gate,
-open the control page target, render waiting and ready mount-state into an
-external shell-owned `[data-external-shell-mount]` DOM region, then read
-readonly machine-session status.
+open the control page target, mount waiting and ready mount-state into an
+external shell-owned `[data-external-shell-mount]` DOM region through the shared
+mount workflow, then read readonly machine-session status.
 
 The control-page refresh workflow lives in
 `runtime/ui/ini-panel/control-page-refresh-workflow.js`. Use