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/usage_scan.cpp

@@ -1,4 +1,3 @@
-#include "core/namespaces.h"
 // usage_scan.cpp — see usage_scan.h. The REAPER reads behind the pS-usage prune
 // protection; every decision is in the pure sample_usage module, this TU only reads.
 //
@@ -27,7 +26,7 @@
 #include <vector>
 
 #include "core/version/app_version.h"      // vstPluginName / vstOutputName (channel name needles)
-#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 "ext_keys.h"         // kProjExtNamespace / kProjExtUsageKeyPrefix
 #include "core/wire/instrument_drop.h"  // vstClassIdHex — the frozen channel class-UID hex
 #include "core/wire/sample_usage.h"     // identityMatches, foldUsageRecords (the pure decisions)
@@ -53,6 +52,14 @@
 
 namespace reasampler {
 
+// Real-namespace-home using-directive (Q-W6: the namespaces.h shim is retired):
+// this TU speaks the sample_usage wire vocabulary wholesale (UsageRecord /
+// decodeUsageRecord / foldUsageRecords / identityMatches / toUpperAscii) plus the
+// channel-identity accessors + the preset class-id hex.
+using namespace reasampler::wire;
+using version::vstOutputName;
+using version::vstPluginName;
+
 namespace {
 
 // The three UPPERCASED channel needles identityMatches (pure, sample_usage) checks
@@ -169,16 +176,15 @@ bool itemHasInstance(MediaItem* item, const FxIdentityNeedles& id) {
 
 // Growing GetProjExtState read: the usage record scales with the hold count, so a
 // fixed buffer risks a truncated decode. The retry policy is the SHARED pure
-// instrument::map::readProjExtStateGrowing (Q-W5 rider T2-04 — one loop for persist,
-// this prune-safety-adjacent read, and the VST bridge; the rules cannot drift).
+// wire::readProjExtStateGrowing (T2-04 — one loop for persist, this
+// prune-safety-adjacent read, and the VST bridge; the rules cannot drift).
 // Returns nullopt when the key cannot be read WHOLE — absent-after-enumeration
 // (rv <= 0) or pathologically large (> 16 MB give-up). The caller only queries keys
 // the enumeration just listed, so a nullopt here is a PRESENT-BUT-UNREADABLE record:
 // it folds to abortPrune (fail-safe — silently reduced protection is the delete
 // direction).
 std::optional<std::string> readExtStateValue(ReaProject* proj, const char* key) {
-    using instrument::map::GrowingExtStateRead;
-    const GrowingExtStateRead read = instrument::map::readProjExtStateGrowing(
+    const GrowingExtStateRead read = readProjExtStateGrowing(
         [&](char* buf, int cap) {
             return GetProjExtState(proj, kProjExtNamespace(), key, buf, cap);
         });