Extract canvas tool UI planning

docs/modernization/roadmap.md

@@ -499,6 +499,10 @@ before legacy `Canvas`/`Layer` frame execution continues.
 changes, tip/pattern/dual texture changes, preset brush replacement, and stroke
 settings refreshes used by the live brush, quick, color, and floating panel
 callbacks before legacy `Brush` mutation and resource loading continue.
+`pano_cli plan-canvas-tool` exposes app-core planning for draw/erase/line,
+camera, grid, copy, cut, fill, mask, flood-fill, pick, and touch-lock toolbar
+commands before legacy `Canvas` mode, pen picking, touch-lock, and transform
+state mutation continue.
 `pano_cli plan-grid-operation` exposes app-core planning for grid heightmap
 pick/load/reload/clear, lightmap render capability/limit checks, and heightmap
 commit used by the live grid panel before legacy image loading, OpenGL texture
@@ -1158,6 +1162,15 @@ Results:
   `pano_cli_plan_grid_operation_rejects_empty_reload`, and
   `pano_cli_plan_grid_operation_rejects_bad_samples` passed and expose live
   grid/heightmap/lightmap planning as JSON automation.
+- `pp_app_core_canvas_tool_ui_tests` passed, covering toolbar mode selection,
+  copy/cut transform action planning, pick no-op outside draw mode, and
+  touch-lock toggling.
+- `pano_cli_plan_canvas_tool_draw_smoke`,
+  `pano_cli_plan_canvas_tool_copy_smoke`,
+  `pano_cli_plan_canvas_tool_pick_noop_smoke`,
+  `pano_cli_plan_canvas_tool_touch_lock_smoke`, and
+  `pano_cli_plan_canvas_tool_rejects_unknown` passed and expose live draw
+  toolbar planning as JSON automation.
 - `pp_app_core_history_ui_tests` passed, covering undo/redo availability,
   no-op history commands, clear-history stack/memory state, memory-only clear,
   and negative metric rejection.