Introduce paramIds namespace with Oscillator struct and constexpr
arrays for envelope, LFO, FX, and macro parameter IDs. Replace the
scattered local const char* arrays in Engine and PluginEditor with
references to these shared definitions.
Return ModSource::Count from modSourceFromString for unknown strings
instead of silently mapping to Lfo1. Simplify isPerVoiceSource and
isPerVoiceTarget to range-based expressions.
Add a floating value label near the cursor while dragging a knob, giving
immediate feedback without altering slider behaviour. Inherit
SettableTooltipClient on ToggleButton so setTooltip works consistently
with knobs and combos.
Introduce a shared layout constants namespace in PluginEditor so every
panel, row and control position derives from one spacing system. Add
tooltips to all knobs, combos, toggles, and buttons. Add Tab/Shift+Tab
tab cycling via keyPressed, with a TooltipWindow for hover hints.
biggy