Front page synthesizer trial: wear, meters and signal paths

In the synth canvas trial for website admins: each panel carries a tile of scratches and speckles shifted per panel, a blotchy tint of uneven paint, darker edges, and grime round its screws, jacks and knobs. All of it is a few small SVG tiles and gradients, with no photographs. LED rows and columns light from the first with the last one or two unlit, never with a gap. The dotted paths between a group's jacks run left to right. The dark rail round each section is gone; the seams between modules remain. Nothing changes for anyone else.