Q-W6: registration table (OCP) in main.cpp; bank verbs -> shell/bank_ops(Session&); persist.h + wav_trim + namespaces.h shims deleted; 61/61

capture.h realtime seam split to capture_realtime_shell.h; GetProjExtState grow-loop rehomed to core/wire/ext_state_read; stale persist.cpp/bank_panel.cpp comment refs fixed; CLAUDE.md persist/bank_book/actions bullets updated. Command-id suffixes, display phrases, and undo labels byte-identical.

src/core/ui/footer_bar.h

@@ -3,7 +3,7 @@
 // footer_bar — the REAPER-free, LICE-free layout + hit-test math for the bank_panel's L4
 // footer LEFT group: the narrowed [Arrange|Design] mode toggle, its compact per-mode count
 // label, and the Tail button, laid out left-to-right at the footer's left. The panel shell
-// (bank_panel.cpp) owns the SWELL window, LICE drawing, and the click dispatch (cycle tail /
+// (shell/panel/) owns the SWELL window, LICE drawing, and the click dispatch (cycle tail /
 // activate a mode); what is NOT DAW-bound — WHERE the toggle box, the count label, and the
 // Tail button sit, and which one a click lands on — lives here so it is unit-tested outside
 // the DAW (CLAUDE.md §load-bearing split). Mirror of action_bar / mode_switch / prune_button.