Extract app frame and ui state services

docs/modernization/tasks.md

@@ -84,6 +84,23 @@ Key facts:
   wiring through `src/legacy_tools_menu_binding_services.*`, so
   `src/app_layout_tools_menu.cpp` no longer owns that floating-panel submenu
   body inline while retained Tools execution and options wiring remain.
+- `App::update()` now delegates retained app-frame layout update and
+  canvas-toolbar refresh execution through `src/legacy_app_frame_services.*`,
+  so `src/legacy_app_runtime_shell_services.cpp` is thinner at the frame
+  update seam while draw-time execution still remains there.
+- `App::tick()` and `App::resize()` now delegate retained app-frame tick and
+  surface-resize execution through `src/legacy_app_frame_services.*`, so
+  `src/app_events.cpp` is thinner at the frame-execution seam while broader
+  input/platform dispatch still remains there.
+- `App::ui_save()` and `App::ui_restore()` now delegate retained floating and
+  docked panel persistence through `src/legacy_app_ui_state_services.*`, so
+  `src/app_layout_ui_state.cpp` is down to thin preference adapters while RTL
+  direction execution stays local.
+- `App::init_sidebar()` now delegates the retained color-popup open/close
+  wiring through `src/legacy_sidebar_color_popup_services.*` with explicit
+  `App&`, popup-root, trigger-button, and panel dependencies, so
+  `src/app_layout_sidebar.cpp` is thinner while the retained stroke/grid/layer
+  popup families still remain inline.
 
 ## Parallel Assignment Rules