推进 INI 面板 shell handoff package mount-state

wasm-port/docs/panel-entry.md

@@ -27,6 +27,7 @@ import {
   createIniPanelShellSessionHandoffDisplayViewModel,
   createIniPanelShellSessionHandoffPackage,
   createIniPanelShellSessionHandoffPackageDisplayViewModel,
+  createIniPanelShellSessionHandoffPackageMountState,
   createIniPanelShellSessionHandoffPackageReport,
   createIniPanelShellSessionHandoffPackageRenderState,
   createIniPanelShellSessionHandoffPackageSchema,
@@ -210,6 +211,11 @@ outer shell needs the package display view-model compressed into launch-side
 DOM state. The launch page renders `[data-handoff-status]` and
 `[data-handoff-rows]` from the package render-state so the first page shows
 package-level schema/report status.
+Use `createIniPanelShellSessionHandoffPackageMountState()` or
+`linuxCncIniPanelLaunchApi.getShellSessionHandoffPackageMountState()` when an
+outer shell needs one read-only mount-state that combines package render-state,
+the control-page target, required readonly methods, and the current
+control-page session readiness snapshot.
 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,