Move app dialog overlays to checked handles

docs/modernization/tasks.md

@@ -34,11 +34,11 @@ auditable steps rather than by subjective estimates.
 | Build and CMake ownership | 15 | 13 | Root CMake owns active source lists, app/tool targets, and retained package entrypoints. |
 | Test and automation coverage | 15 | 9 | Headless, platform, package, and focused validation commands exist and are current. |
 | Pure component behavior ownership | 15 | 8 | Behavior lives in `pp_*` components and is consumed by live adapters. |
-| Legacy adapter retirement | 20 | 9 | `legacy_*_services` and singleton bridges are deleted or reduced to trivial composition. |
+| Legacy adapter retirement | 20 | 10 | `legacy_*_services` and singleton bridges are deleted or reduced to trivial composition. |
 | Renderer boundary and OpenGL parity | 15 | 11 | Live render/export/readback paths execute through renderer interfaces with parity checks. |
 | Platform and package parity | 10 | 8 | Required platforms have root CMake/package validation and injected platform services. |
 | Hardening and future backend readiness | 10 | 4 | Edge, fuzz, golden, stress, and backend-lab gates exist for high-risk paths. |
-| **Total** | **100** | **63** | Only completed tasks below may change this number. |
+| **Total** | **100** | **64** | Only completed tasks below may change this number. |
 
 When updating `Current`, add a dated note under "Completed Task Log" with the
 task id, points moved, validation command, and commit hash.
@@ -259,6 +259,38 @@ ctest --preset desktop-fast --build-config Debug -R "pp_ui_core_overlay_lifetime
 cmake --build --preset windows-msvc-default --config Debug --target PanoPainter
 ```
 
+### ADP-006 - Move App-Owned Dialog Overlays To Checked Handles
+
+Status: Done
+Score: +1 legacy adapter retirement
+Debt: `DEBT-0058`, `DEBT-0063`
+Scope: `src/legacy_ui_overlay_services.*`, `src/legacy_app_dialog_services.*`,
+dialog tests only
+
+Goal:
+
+Move the retained app-owned progress/message/input dialog overlays off the
+attach-only root insertion path so the factory-owned live dialogs participate in
+the checked overlay lifetime registry before broader dialog cleanup.
+
+Done Checks:
+
+- `App::show_progress`, `App::message_box`, and `App::input_box` still preserve
+  existing captions, cancel behavior, and keyboard behavior.
+- `create_legacy_progress_dialog_overlay`, `create_legacy_message_dialog_overlay`,
+  and `create_legacy_input_dialog_overlay` open through checked overlay handles
+  when the main layout anchor is available instead of only attaching raw root
+  children.
+- `DEBT-0058` and `DEBT-0063` describe the reduced app-dialog lifetime surface
+  and the remaining retained dialog families.
+
+Validation:
+
+```powershell
+ctest --preset desktop-fast --build-config Debug -R "pp_app_core_app_dialog|pp_ui_core_node_lifetime|pp_ui_core_overlay_lifetime" --output-on-failure
+cmake --build --preset windows-msvc-default --config Debug --target PanoPainter
+```
+
 ### RND-001 - Make Pure Equirectangular Export The Primary Success Path
 
 Status: Done