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.

tests/test_master_gain.cpp

@@ -90,18 +90,6 @@ static void testBelowFloorCollapsesToBottom() {
     CHECK(masterGainNormFromDb(kMasterGainMinDb + 1e-9) > 0.0);
 }
 
-static void testLabels() {
-    char buf[24];
-    formatMasterGainLabel(0.0, buf, sizeof(buf));
-    CHECK(std::strcmp(buf, "-inf") == 0);
-    formatMasterGainLabel(1.0, buf, sizeof(buf));
-    CHECK(std::strcmp(buf, "+24.0dB") == 0);
-    formatMasterGainLabel(masterGainNormFromDb(0.0), buf, sizeof(buf));
-    CHECK(std::strcmp(buf, "+0.0dB") == 0);
-    formatMasterGainLabel(masterGainNormFromDb(-12.0), buf, sizeof(buf));
-    CHECK(std::strcmp(buf, "-12.0dB") == 0);
-}
-
 int main() {
     testBottomIsTrueSilence();
     testEndpoints();
@@ -110,7 +98,6 @@ int main() {
     testMonotonic();
     testNonFiniteLinearClamps();
     testBelowFloorCollapsesToBottom();
-    testLabels();
     if (g_fail) {
         std::printf("%d FAILURE(S)\n", g_fail);
         return 1;