Restore the bank fold and usage publish to the resume path, guard setActive against repeats, and make the meter fold's bound literal

The resume also hands back to a full reload when the fold moves the loaded capture's decode source, so the refs table and the audio cannot skew.

src/core/instrument/map/sample_map.cpp

@@ -104,6 +104,12 @@ void refreshRefsFromBank(SampleRefs& refs, const std::string& banksJson,
     }
 }
 
+bool sameDecodeSource(const SelectedSample& a, const SelectedSample& b) {
+    return a.relativePath == b.relativePath && a.rootNote == b.rootNote &&
+           a.channelCount == b.channelCount && a.loop.hasLoop == b.loop.hasLoop &&
+           a.loop.start == b.loop.start && a.loop.end == b.loop.end;
+}
+
 LegacyLiftDecision legacyLiftDecision(const std::optional<std::string>& banksJson,
                                       const std::vector<std::string>& ids) {
     if (!banksJson || banksJson->empty()) return LegacyLiftDecision::Retry;