Add canvas clear service boundary

docs/modernization/debt.md

@@ -45,7 +45,7 @@ agent or engineer to remove them without reconstructing context from chat.
 | DEBT-0025 | Open | Modernization | Quick brush/color slot and mini-state planning now consumes pure `pp_app_core` through `NodePanelQuick` and `pano_cli plan-quick-operation`, but live execution still mutates legacy quick UI widgets, `Brush` previews, color picker popup state, and preset popup state directly | Preserve quick-panel behavior while quick brush/color commands move toward a brush/app command boundary with safer automation coverage | `pp_app_core_quick_ui_tests`; `pano_cli plan-quick-operation --kind brush --current-index 0 --slot-index 2`; `pano_cli plan-quick-operation --kind restore --brush-index 2 --color-index 1 --fire-event`; `ctest --preset desktop-fast --build-config Debug` | Quick-panel selection, popup, restore, reset, brush preview, and color execution are owned by app/brush/UI services with `NodePanelQuick` acting only as UI adapter |
 | DEBT-0026 | Open | Modernization | Toolbar and canvas history command planning now consumes pure `pp_app_core` through `App::init_toolbar_main`, `NodeCanvas`, and `pano_cli plan-history-operation`, but live execution still mutates legacy `ActionManager` stacks and `Canvas::I` unsaved state directly | Preserve undo/redo/clear behavior while moving action history toward document/app command services | `pp_app_core_history_ui_tests`; `pano_cli plan-history-operation --kind undo --undo-count 2`; `pano_cli plan-history-operation --kind clear --undo-count 2 --redo-count 1 --memory-bytes 4096`; `ctest --preset desktop-fast --build-config Debug` | Undo/redo/clear execution is owned by document/app history services with toolbar and canvas input acting only as adapters |
 | DEBT-0027 | Open | Modernization | Canvas draw-tool toolbar command, canvas input mode switching, and active-state planning now consume pure `pp_app_core` through `App::init_toolbar_draw`, `App::update`, `NodeCanvas`, `pano_cli plan-canvas-tool`, and `pano_cli plan-canvas-tool-state`, but live execution/state storage still mutates or reads legacy `Canvas` mode state, pen picking state, touch-lock state, and transform copy/cut action objects directly | Preserve current toolbar, stylus eraser, and keyboard draw/erase behavior while canvas input/tools move toward an app/document command boundary | `pp_app_core_canvas_tool_ui_tests`; `pano_cli plan-canvas-tool --kind copy`; `pano_cli plan-canvas-tool-state --mode draw --picking --touch-lock`; `ctest --preset desktop-fast --build-config Debug` | Canvas tool selection, toolbar state refresh, picking, touch lock, stylus eraser/key mode switching, and transform action execution are owned by app/document/canvas services with toolbar/canvas callbacks acting only as adapters |
-| DEBT-0028 | Open | Modernization | Canvas clear command planning now consumes pure `pp_app_core` through `App::init_toolbar_main` and `pano_cli plan-canvas-clear`, but live execution still calls legacy `Canvas::clear`, which records `ActionLayerClear`, clears the current layer/frame, and marks legacy `Canvas::I` unsaved directly | Preserve clear-current-layer behavior while canvas/document commands move toward document/app command services | `pp_app_core_document_canvas_tests`; `pano_cli plan-canvas-clear --r 0 --g 0.1 --b 0.2 --a 0.3`; `pano_cli plan-canvas-clear --no-canvas`; `ctest --preset desktop-fast --build-config Debug` | Canvas clear execution, undo recording, dirty-state updates, and clear color handling are owned by document/app services with toolbar callbacks acting only as adapters |
+| DEBT-0028 | Open | Modernization | Canvas clear command planning and execution dispatch now consume pure `pp_app_core` through `App::init_toolbar_main`, `pano_cli plan-canvas-clear`, and the `DocumentCanvasClearServices` boundary, but the live adapter still calls legacy `Canvas::clear`, which records `ActionLayerClear`, clears the current layer/frame, and marks legacy `Canvas::I` unsaved | Preserve clear-current-layer behavior while canvas/document commands move toward document/app command services | `pp_app_core_document_canvas_tests`; `pano_cli plan-canvas-clear --r 0 --g 0.1 --b 0.2 --a 0.3`; `pano_cli plan-canvas-clear --no-canvas`; `ctest --preset desktop-fast --build-config Debug` | Canvas clear execution, undo recording, dirty-state updates, and clear color handling are owned by injected document/app services with no legacy canvas-clear adapter |
 | DEBT-0029 | Open | Modernization | Image import route planning now consumes pure `pp_app_core` through the File menu and `pano_cli plan-image-import`, but live execution still calls legacy `Canvas::import_equirectangular` or legacy import transform mode setup directly after image loading | Preserve current File > Import behavior while image import moves toward document/app/asset command services | `pp_app_core_document_import_tests`; `pano_cli plan-image-import --width 4096 --height 2048`; `pano_cli plan-image-import --width 1024 --height 1024`; `ctest --preset desktop-fast --build-config Debug` | Image loading, equirectangular import, transform-placement import, and failure reporting are owned by document/app/asset services with File-menu callbacks acting only as adapters |
 | DEBT-0030 | Open | Modernization | File export menu action planning and execution dispatch now consume pure `pp_app_core` through the File menu, `pano_cli plan-export-menu`, and the `DocumentExportMenuServices` boundary, but the live adapter still opens legacy export dialogs and then reaches legacy canvas/render/video export code | Preserve current export menu behavior while export command execution moves toward document/app/renderer/video services | `pp_app_core_document_export_tests`; `pano_cli plan-export-menu --kind png`; `pano_cli plan-export-menu --kind animation-mp4 --demo`; `pano_cli plan-export-menu --kind layers --no-canvas`; `ctest --preset desktop-fast --build-config Debug` | Export menu routing, license gating, target creation, image/layer/cube/depth/animation/timelapse execution, and error reporting are owned by injected document/app/renderer/video services with File-menu callbacks acting only as UI adapters and no legacy export adapter |
 | DEBT-0031 | Open | Modernization | Top-level File menu command planning and execution dispatch now consume pure `pp_app_core` through `App::init_menu_file`, `pano_cli plan-file-menu`, and the `FileMenuServices` boundary, but the live adapter still invokes legacy dialogs, platform pickers, cloud code, share code, and canvas import/export paths directly | Preserve File menu behavior while app workflows move toward app/document/platform command services | `pp_app_core_file_menu_tests`; `pano_cli plan-file-menu --command save-as`; `pano_cli plan-file-menu --command import`; `pano_cli plan-file-menu --command cloud-upload`; `ctest --preset desktop-fast --build-config Debug` | File menu routing, picker dispatch, save/share/cloud/resize/export execution, and image/project import execution are owned by injected app/document/platform services with `App::init_menu_file` acting only as a UI adapter and no legacy File menu adapter |

docs/modernization/roadmap.md

@@ -514,8 +514,9 @@ draw/erase mode switching also consume the same app-core command planner before
 legacy canvas mode execution continues.
 `pano_cli plan-canvas-clear` exposes app-core planning for the main toolbar
 clear-current-layer command, including clear color validation, no-canvas
-handling, undo recording intent, and dirty-state intent before legacy
-`Canvas::clear` execution continues.
+handling, undo recording intent, and dirty-state intent; live toolbar execution
+now dispatches through `DocumentCanvasClearServices` before the legacy
+`Canvas::clear` adapter continues.
 `pano_cli plan-image-import` exposes app-core planning for File > Import image
 route decisions, including wide equirectangular images, legacy vertical cube
 strips, regular transform-placement images, and invalid image dimensions before
@@ -1235,7 +1236,8 @@ Results:
   toolbar active-state refresh as JSON automation.
 - `pp_app_core_document_canvas_tests` passed, covering clear-current-layer
   undo/dirty intent, no-canvas no-op behavior, and invalid clear color
-  rejection.
+  rejection, service dispatch color forwarding, no-op execution preservation,
+  and invalid execution color rejection.
 - `pano_cli_plan_canvas_clear_smoke`,
   `pano_cli_plan_canvas_clear_no_canvas_smoke`, and
   `pano_cli_plan_canvas_clear_rejects_bad_color` passed and expose toolbar