Report the instrument's automatable parameters to the host under a frozen id table, in signal-flow order, with real units

42 of 44 ids issued: pitch key-track and Trigger length stay reserved
pending a live path. Master gain reclassified Live — it never reloaded.

src/shell/instrument/reasampler_editor.h

@@ -256,6 +256,13 @@ private:
     // liveCommitFor (deck_groups.h) for why.
     bool dragCommitsLive(DragKind kind, int paramId = -1) const;
 
+    // The deck knobs whose value lives on the processor or on the editor rather than in the
+    // parameter set: the preview-velocity sentinel, voice count, master gain. applyDeckKnob
+    // writes each straight through, so params_ is not a rollback target for them and
+    // commitLive has nothing of theirs to push. Every drag path that ends a gesture — release,
+    // reset, capture-lost, per-move — asks this same question.
+    static bool deckKnobIsProcessorSide(int paramId);
+
     // Commits `id` as the loaded capture. The one parameter set carries over — it governs
     // whatever is loaded, so a load swaps the sound, not the settings.
     void loadSelection(const std::string& id);
@@ -398,8 +405,12 @@ private:
     // params edit, no reload).
     void applyDeckKnob(int id, double norm);
 
-    // The knob's live value label shown during hover/drag: milliseconds, percents, Hz, signed
-    // semitones, a curve exponent, a voice count, or the master-gain dB.
+    // The knob's value in the REAL unit the host is told about (core/instrument/param).
+    double deckPlainValue(int id) const;
+
+    // The knob's live value label shown during hover/drag: the ONE per-category formatter's
+    // digits plus this surface's own static chrome (the unit suffix, a curve dial's caret).
+    // Empty for a control with no plain-value layer.
     std::string deckValueLabel(int id) const;
 
     ReaSamplerProcessor* processor_ = nullptr;