Extract brush package import targets

docs/modernization/roadmap.md

@@ -795,6 +795,12 @@ The live PPBR import/export path consumes those helpers, while legacy
 Serializer/Image payload reading, stroke preview generation, preset storage,
 and the historical permissive version check remain tracked under `DEBT-0047`
 and `DEBT-0049`.
+ABR and PPBR import image target planning for brush tips and patterns also now
+uses `pp_assets::brush_package`, so the legacy preset panel no longer owns the
+`data/brushes`, `data/brushes/thumbs`, `data/patterns`, and
+`data/patterns/thumbs` path construction rules. Actual ABR/PPBR parsing,
+duplicate policy, preset creation, save/reload, and progress/UI refresh remain
+legacy-owned under `DEBT-0048`.
 
 Implementation tasks:
 
@@ -1410,6 +1416,12 @@ Results:
 - Focused PPBR asset CTest coverage passed for `pp_assets_brush_package_tests`
   and the brush package export CLI tests, including path-without-directory
   rejection and legacy no-export-data data-directory planning.
+- `PanoPainter`, `pp_assets_brush_package_tests`,
+  `pp_app_core_brush_package_import_tests`, and `pano_cli` built after ABR and
+  PPBR imported brush tip/pattern target paths moved into `pp_assets`.
+- Focused brush import storage CTest coverage passed for
+  `pp_assets_brush_package_tests` and the brush package import/export CLI
+  smoke/failure tests.
 - `pp_app_core_document_recording_tests` passed, covering recording start/stop,
   clear, platform recorded-file cleanup, frame-count reset, export progress
   totals, and oversized progress-total clamping.