Release OpenEnlarge 0.5.2 · MohaElder/openenlarge

OpenEnlarge 0.5.2

Color-head white balance, perceptual saturation, a smarter eraser, and better roll tools.

Color head white balance — a subtractive, density-multiply WB mode that mimics an enlarger's CMY color head (now the default for new images), alongside the existing gain mode.
Perceptual saturation — saturation now works in OKLab with neutral/skin protection and gentle gamut roll-off, so boosts stay clean and skin tones hold.
Smarter eraser — heal spots get on-image markers you can tap to select and double-tap (or Delete) to remove; a new "Show heal spots" toggle; faster two-stage healing with a cached auto-dust buffer.
Auto exposure — images get an auto exposure on first develop entry, and you can auto-brighten the whole roll (each frame solved on its own).
Apply-settings picker — a Lightroom-style dialog to choose exactly which groups (Tone & Color, Crop, Film base, Exposure, White point) to paste between frames or sync to the whole roll. It now also appears for single-frame pastes.
Export overwrite prompt — when an output file already exists, export now asks first (Overwrite / Skip / Keep both / Cancel), with "apply to all remaining" so a big batch is one decision.

Faster export — the full-res encode/pack/readback/TIFF passes are now parallelized, the full-res decode is cached, and a wasteful EXIF re-read is skipped for PNG/JPEG.
Uniform, left-aligned, aspect-adaptive contact-sheet tiles in the Roll view.

Exposure no longer shifts color temperature (the ±5 EV hue drift).
Eraser: pointer cursor over heal-spot markers, and no re-bake/toast when toggling "Show heal spots".

彩色头白平衡、感知饱和度、更智能的橡皮擦，以及更好用的整卷工具。

彩色头白平衡 — 新增减色（密度相乘）白平衡模式，模拟放大机的 CMY 彩色头（现为新图像的默认模式），与原有的增益模式并存。
感知饱和度 — 饱和度现在在 OKLab 空间中处理，带有中性色/肤色保护与平滑的色域滚降，提升更干净、肤色更稳。
更智能的橡皮擦 — 修复点在图像上显示标记，可点按选中、双击（或 Delete）删除；新增"显示修复点"开关；采用带缓存的自动除尘缓冲的两段式修复，速度更快。
自动曝光 — 图像首次进入显影时自动曝光，并可对整卷自动调亮（每张独立计算）。
应用设置选择器 — 类似 Lightroom 的对话框，可精确选择要在帧间粘贴或同步到整卷的设置组（色调与颜色、裁切、片基、曝光、白点）。现在单张粘贴时也会出现。
导出覆盖提示 — 当输出文件已存在时，导出会先询问（覆盖 / 跳过 / 两者都保留 / 取消），并提供"应用于其余所有冲突"，让大批量导出只需一次决定。