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/capture/insert.cpp

@@ -1,4 +1,3 @@
-#include "core/namespaces.h"
 // insert.cpp — REAPER-facing placement shell (M6). See insert.h.
 //
 // Compiled into the reaper_reasampler MODULE. Includes reaper_plugin_functions.h
@@ -40,7 +39,7 @@
 #include "core/model/bank_model.h"
 #include "shell/panel/panel_bank_ops.h"  // bankPanelSelectedSampleIds / SourceBankId
 #include "core/capture/capture_paths.h"
-#include "persist.h"
+#include "shell/persist/session.h"
 
 #define REAPERAPI_MINIMAL
 #define REAPERAPI_WANT_CountSelectedTracks
@@ -58,13 +57,19 @@
 
 namespace reasampler {
 
+// Real-namespace-home using-declarations (Q-W6: the namespaces.h shim is retired).
+using capture::computeInsertMode;
+using capture::normalizeSlashes;
+using capture::resolveBankFile;
+using capture::TempoConform;
+
 namespace {
 
 namespace fs = std::filesystem;
 
 // The current project's directory (mirrors bank_panel/capture/persist). The bank
 // index stores relative paths; resolving a bank file needs the current .rpp dir.
-// FOLLOW-UP (already noted in bank_panel.cpp): a shared "current project dir"
+// FOLLOW-UP (already noted in panel_bank_ops.cpp): a shared "current project dir"
 // REAPER helper is a clean small refactor now that a fourth consumer exists — out
 // of scope for M6.
 std::string currentProjectDir() {