a4083764fb
New features: - Procedural effect source type with fire, meteor, plasma, noise, and aurora algorithms using palette LUT system and 1D value noise generator - 12 predefined gradient presets (rainbow, sunset, ocean, forest, fire, lava, aurora, ice, warm, cool, neon, pastel) selectable from a dropdown in the gradient editor - Auto-crop filter: min aspect ratio parameter to prevent false-positive cropping in dark scenes on ultrawide displays Optimization: - Static/gradient sources without animation: stream thread sleeps 0.25s instead of frame_time; processor repolls at frame_time instead of 5ms (~40x fewer iterations) - Inverted isinstance checks in routes to test for PictureColorStripSource only Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>