Service both VST3 parameter channels, and promote pitch key-track and Trigger length so all 44 ids issue

The SDK's own single-component sample drains inputParameterChanges in
process() and implements setParamNormalized; automation was reading the
GUI channel alone. The audio thread now patches a block it solely owns.

src/shell/instrument/instrument_bake.cpp

@@ -120,6 +120,9 @@ BakeChainResult runBake(ReaSamplerProcessor& processor) {
     const std::optional<Tempo> tempo = Tempo::fromBpm(bridge.projectTempoBpm());
     if (!tempo) return fail("the project tempo could not be read");
 
+    // Fold anything the host's automation wrote into the model FIRST: the bake renders the sound
+    // the user approved, and an automated value the model has not picked up yet is part of it.
+    processor.drainAutomationToModel();
     const InstrumentParams dialed = processor.instrumentParams();
     const int rootNote = dialed.rootOverride ? *dialed.rootOverride : source->rootNote;