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/CMakeLists.txt

@@ -46,6 +46,7 @@ if(WIN32 AND EXISTS "${VST3_SDK}/public.sdk/source/main/pluginfactory.cpp")
         reasampler_processor.cpp
         processor_state.cpp
         processor_reload.cpp
+        instrument_params.cpp
         # The editor family is split on the Sample face's band axis: session/bridge state,
         # param plumbing plus the shared band-layout resolve, then paint and input in
         # matching sets, plus the two band-independent surfaces and the platform TU.
@@ -89,6 +90,7 @@ if(WIN32 AND EXISTS "${VST3_SDK}/public.sdk/source/main/pluginfactory.cpp")
         waveform_view loop_marks bank_sync browser_scroll param_slider tooltip
         theme component_geometry bank_grid trigger_seam envelope_overlay envelope_edit
         knob_deck deck_groups deck_values curve_popup spline_edit master_gain sample_usage
+        param_id param_units param_format
         limiter meter_accumulate meter_ballistics master_meter bake_hold
         file_bytes curve_law stroke_aa
         curve_tessellate