Centralize retained color picker closing

docs/modernization/debt.md

@@ -509,10 +509,10 @@ agent or engineer to remove them without reconstructing context from chat.
   popup callbacks, retained close policy, and broader `Node` handle adoption
   remain open.
 - 2026-06-12: DEBT-0063 was narrowed again. Brush, brush-preset, color, layer,
-  grid, and stroke popup-panel outside-click close handling now routes through
-  `src/legacy_ui_overlay_services.*` for release, root removal, and callback
-  dispatch instead of repeating that sequence in each panel class. Broader
-  checked-handle and scoped-callback adoption remains open.
+  grid, stroke, and color-picker popup-panel outside-click close handling now
+  routes through `src/legacy_ui_overlay_services.*` for release, root removal,
+  and callback dispatch instead of repeating that sequence in each panel class.
+  Broader checked-handle and scoped-callback adoption remains open.
 - 2026-06-05: DEBT-0011 was narrowed. The Windows app package smoke target now
   passes the configure-time CMake executable into `package-smoke.ps1`, so VS
   2026 generator validation does not depend on an older `cmake` on PATH, and

docs/modernization/roadmap.md

@@ -493,8 +493,9 @@ popup mouse-ignore/flood/capture-child activation for those popup families.
 Repeated menu, submenu, combo-box, and brush-preset popup close/release
 execution now uses the same retained helper, and popup tick-decoration close
 callbacks are bound through the overlay service instead of per-panel lambdas.
-Brush, brush-preset, color, layer, grid, and stroke popup-panel outside-click
-close handling now shares the same retained release/remove/callback helper.
+Brush, brush-preset, color, layer, grid, stroke, and color-picker popup-panel
+outside-click close handling now shares the same retained release/remove/
+callback helper.
 Raw popup callback captures and full close/capture ownership remain part of
 `DEBT-0063`.
 `pano_cli inspect-image` exposes PNG IHDR metadata as JSON,

src/node_dialog_picker.cpp

@@ -3,6 +3,7 @@
 #include "util.h"
 #include "app.h"
 #include "canvas.h"
+#include "legacy_ui_overlay_services.h"
 #include "node_dialog_picker.h"
 #include <stdlib.h>
 
@@ -59,10 +60,7 @@ kEventResult NodeColorPicker::handle_event(Event* e)
                 m_color_old1->m_color = m_color_old->m_color;
                 m_color_old->m_color = m_color_cur->m_color;
             }
-            mouse_release();
-            m_parent->remove_child(this);
-            if (on_popup_close)
-                on_popup_close(this);
+            pp::panopainter::close_legacy_popup_panel(*this, on_popup_close);
         }
         break;
     default: