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/persist/ext_state_io.cpp

@@ -36,7 +36,7 @@
 
 #include "core/capture/capture_paths.h"      // projectDirOfRpp (pure path arithmetic)
 #include "core/instrument/map/bank_sync.h"   // parseBankGeneration / formatBankGeneration (SHARED with the instrument reader)
-#include "core/instrument/map/bridge_marshal.h"  // readProjExtStateGrowing (T2-04: the ONE grow-loop policy)
+#include "core/wire/ext_state_read.h"        // readProjExtStateGrowing (T2-04: the ONE grow-loop policy)
 #include "core/version/app_version.h"
 
 #define REAPERAPI_MINIMAL
@@ -77,15 +77,15 @@ std::string projectDirOf(const std::string& rppPath) {
 
 // GetProjExtState needs a caller-supplied buffer; the index JSON can be large
 // (many samples). The grow-until-strict-fit retry policy is the SHARED pure
-// instrument::map::readProjExtStateGrowing (Q-W5 rider T2-04 — the same policy the
-// usage_scan and VST-bridge reads run); this wrapper binds the REAPER call and
+// wire::readProjExtStateGrowing (T2-04 — the same policy the usage_scan and
+// VST-bridge reads run); this wrapper binds the REAPER call and
 // folds the terminal cases persist's callers expect: "" for an absent key (a valid
 // empty bank, not an error) and a console warning + "" for a value exceeding the
 // 16 MB ceiling, so an over-large value reads as "too large to load", not silent
 // data loss (mirrors the malformed-JSON warning in loadFromProject).
 std::string getProjExtStateString(void* proj, const char* ns, const char* key) {
-    using instrument::map::GrowingExtStateRead;
-    const GrowingExtStateRead read = instrument::map::readProjExtStateGrowing(
+    using wire::GrowingExtStateRead;
+    const GrowingExtStateRead read = wire::readProjExtStateGrowing(
         [&](char* buf, int cap) {
             return GetProjExtState(static_cast<ReaProject*>(proj), ns, key, buf, cap);
         });