Replace the two plain crossover sliders with a horizontal log-frequency strip
(LOW/MID/HIGH) and two draggable handles, plus number boxes (double-click to
type). Handles and boxes enforce a dynamic limit so lo/mid never crosses
mid/hi, on top of each param's own range. Lives in the editor/ widget module.
Known limitation: the lo<=hi limit is editor-only, so host automation can write
the two params past each other (briefly inverting the mid band). The DSP clamps
to monotonic, but FL's automation can misbehave once inverted. Left as-is.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Move the egui editor from a single editor.rs into an editor/ module: mod.rs
(aggregator: create(), EditorState, layout, placeholder slider columns),
meter.rs (|L|GR|R| meters + ceiling lamp, owns MeterState), and plot.rs
(rolling in/out/GR plot, owns PlotState + PlotHistory). Each visualiser owns
its GUI state; the aggregator composes them. No behavior change.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Mikkeli Matlock