Extract animation operation planning

docs/modernization/roadmap.md

@@ -490,6 +490,10 @@ the live layer rename dialog before legacy `Canvas` layer mutation and
 duplicate, select, reorder, remove, opacity, visibility, alpha-lock, blend-mode,
 and highlight actions used by the live layer panel before legacy `Canvas` and
 UI layer execution continue.
+`pano_cli plan-animation-operation` exposes app-core planning for animation
+frame add, duplicate, remove, duration adjustment, timeline moves, timeline
+goto/next/previous, and onion-size updates used by the live animation panel
+before legacy `Canvas`/`Layer` frame execution continues.
 `pp_platform_api` now owns a headless `PlatformServices` interface for
 startup storage path preparation, clipboard text, cursor visibility,
 virtual-keyboard visibility, UI-thread lifecycle hooks, render-context
@@ -1110,6 +1114,15 @@ Results:
   `pano_cli_plan_layer_operation_highlight_smoke`, and
   `pano_cli_plan_layer_operation_rejects_bad_opacity` passed and expose live
   layer-panel operation planning as JSON automation.
+- `pp_app_core_document_animation_tests` passed, covering animation frame
+  add/duplicate/remove planning, selected-frame rejection, last-frame remove
+  rejection, duration floor/overflow handling, timeline move edge behavior,
+  goto/next/previous wrapping, and onion-size rejection.
+- `pano_cli_plan_animation_operation_add_smoke`,
+  `pano_cli_plan_animation_operation_duration_floor_smoke`,
+  `pano_cli_plan_animation_operation_next_wrap_smoke`, and
+  `pano_cli_plan_animation_operation_rejects_remove_last_frame` passed and
+  expose live animation-panel planning as JSON automation.
 - `pp_app_core_document_sharing_tests` passed, covering saved-path gating before
   platform share execution.
 - `pano_cli_plan_share_file_unsaved_smoke` and