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_tab_strip.cpp

@@ -10,13 +10,14 @@
 // left/right chevron precedence at the ends, dead space between visible tabs,
 // outside the band above/below/left/right, half-open boundary pixels).
 
-#include "../src/tab_strip.h"
+#include "../src/core/ui/tab_strip.h"
 
 #include <cstddef>
 #include <cstdio>
 #include <vector>
 
 using namespace reasampler;
+using namespace reasampler::ui;
 
 static int g_fail = 0;
 #define CHECK(cond) do { if(!(cond)) { \