推进 text12 接续和 control-page session readiness workflow

wasm-port/docs/panel-entry.md

@@ -15,6 +15,8 @@ import {
   getIniPanelEntryByHref,
   getVisibleIniPanelEntries,
   createMachineSessionControlPageController,
+  loadMachineSessionForControlPageWorkflow,
+  createControlPageSessionLoadState,
   refreshMachineSessionControlPage,
   controlPageStatusText,
   renderMachineSessionControlView,
@@ -57,6 +59,13 @@ refresh result with `phase`, `statusText`, `view`, `renderResult`, and `error`.
 the read-only status line, and `createControlPageRefreshState()` is the stable
 state-shape helper used by the workflow.
 
+The control-page session workflow lives in
+`runtime/ui/ini-panel/control-page-session-workflow.js`. Use
+`loadMachineSessionForControlPageWorkflow()` when an outer shell needs a
+read-only readiness snapshot for the embedded panel API and first control view.
+`createControlPageSessionLoadState()` is the stable state-shape helper for
+`waiting-panel`, `waiting-api`, `waiting-session`, `ready`, and `error` phases.
+
 ## Boundary
 
 The entry shell only links pages and renders already-observed panel state. It