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_view_tree.cpp

@@ -3,12 +3,13 @@
 // one genuinely pure piece: the I_FOLDERDEPTH walk that turns REAPER's linear
 // track stream into the parent<->child FolderTree the pure model consumes.
 
-#include "../src/view_tree.h"
+#include "../src/core/view/view_tree.h"
 
 #include <cstdio>
 #include <string>
 
 using namespace reasampler;
+using namespace reasampler::view;
 
 static int g_fail = 0;
 #define CHECK(cond) do { if(!(cond)) { \