Halftones 0.4.0

Halftones 0.4.0

New

• Image pre-processing in the Transform panel — Blur (Gaussian), Sharpen (unsharp mask with radius), and Noise (film grain). Run after levels and before the halftone screen to clean up or crisp the source.
• Reorganized control panels — Halftone split into Screen / Tone & Dots / Color groups (radial Origin now sits with the screen controls); Output sizing grouped together with a dedicated "PDF Export" subsection.

Export

• Channel PNGs now include full page geometry — margin, crop marks, alignment marks, and a plate label, matching the PDF output. Background-bleed plates extend into the margin.
• Layer-number plate labels — spot plates are labeled One, Two, Three… (key plate "Key") instead of color names. Fixes filename collisions when two colors share a name (e.g. two "dark purple" layers no longer overwrite each other).
• Labels are sized to fill the crop-mark waste strip, staggered across the width so they don't overlap when plates are stacked, and nudged clear of the top-center alignment mark.
• Dropped redundant threshold / flat-vs-halftone text from spot PDF labels.

Fixes

• Blur and Sharpen now actually take effect (the old canvas-filter path was a no-op in the Tauri webview; replaced with a CPU separable box blur).
• Color Proof now exports background bleed correctly into the margin.
• Output readout shows the full printed sheet size in inches (image + margin + crop-mark waste) instead of raw pixels.