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/shell/panel/panel_drag.cpp

@@ -20,7 +20,7 @@
 
 #include "shell/panel/panel_state.h"
 
-#include "shell/panel/panel_bank_ops.h"          // persistBankOp — shared undo-block wrapper (R-B)
+#include "shell/bank_ops/bank_ops.h"             // persistBankOp — shared undo-block wrapper (R-B)
 #include "shell/actions/drag_out_win.h"          // OLE / SWELL drag-out initiation seam (M11)
 #include "shell/actions/instrument_drop_win.h"   // resolveFxDropTarget / performInstrumentDrop (S17)
 
@@ -374,7 +374,7 @@ namespace {
 void doReorderDrop(const std::string& id, const std::string& bankId, int targetSlot) {
     if (!book() || id.empty() || bankId.empty() || targetSlot < 0) return;
     if (!book()->reorderSample(id, bankId, targetSlot)) return;  // rejected/no-op: no undo point
-    persistBankOp("ReaSampler: reorder sample");
+    persistBankOp(*g_panel.session, "ReaSampler: reorder sample");
     g_panel.selection = Selection{};
     invalidatePanel();
 }
@@ -387,7 +387,7 @@ void doReplaceDrop(const std::string& newId, const std::string& oldId,
                    const std::string& bankId) {
     if (!book() || newId.empty() || oldId.empty() || bankId.empty()) return;
     if (!book()->replaceSample(newId, oldId, bankId)) return;  // pool-guard reject: NO-OP
-    persistBankOp("ReaSampler: replace sample");
+    persistBankOp(*g_panel.session, "ReaSampler: replace sample");
     g_panel.selection = Selection{};
     invalidatePanel();
 }