Q-W1 pt2: core/shell/app relocation + sub-namespaces; one concrete ui::Rect (LTRB fork retired); slot_map split from bank_book; BankIndex→BankModel; 59/59 green

tests/test_drag_out.cpp

@@ -9,13 +9,14 @@
 //   * Path-list assembly: single, multi, dedupe (cross-bank copy case), skip-missing,
 //     skip-unresolved, empty selection, order preservation, mixed tallies.
 
-#include "../src/drag_out.h"
+#include "../src/core/ui/drag_out.h"
 
 #include <cstdio>
 #include <string>
 #include <vector>
 
 using namespace reasampler;
+using namespace reasampler::ui;
 
 static int g_fail = 0;
 #define CHECK(cond) do { if(!(cond)) { \