GALOSH v0.6.0 — the chroma knob means what you think it means + Linux one-command setup

The chroma knob now means what you think it means — plus Linux became a first-class citizen.

Highlights

• Hybrid chroma strength (semantics change; defaults bit-unchanged). The old knob only tuned the ridge stiffness of the Y-guided chroma regression — on content where the projection saturates it was nearly inert, and 0 didn't mean "off" (an un-ridged regression, measured below noisy on Set8 s20). New: one monotone dial on every engine — 0 = true bypass (chroma planes pass through bit-exactly), 0–1 = dry/wet mix (the July variant-Q interior optimum reappears: Set8 s20 Cr, c=0.5 beats c=1 by +0.30 dB), 1 = canonical (byte-identical to v0.5.1), >1 = the legacy ridge scaling (still real gains on heavy noise: CRVD ISO25600 +0.22 dB at c=2). Reported via GALOSH-frameserver #1.
• Linux one-command setup: ./install_linux.sh builds the CLIs, creates a private .venv, and generates ./galosh-dng / ./galosh-png launchers; docs/QUICKSTART_LINUX.md assumes zero Python knowledge. Verified flow on Ubuntu 24.04; output matches the Windows build to ~139 dB PSNR.
• exiftool is optional now: the DNG/PNG wrappers warn and continue without it (the DNG skeleton renders on its own), --no-exiftool skips the metadata overlay on purpose, and raw sources beyond DNG (CR3/CR2/NEF/ARW — any Bayer LibRaw reads) are documented. Every CLI's size-mismatch error now explains the raw float32 contract.

Downloads

• GALOSH_YUV_win64.zip — sRGB PNG in → denoised PNG out (drag & drop or CLI). Rebuilt: the bundled CLI carries the new chroma dial; READMEs document it.
• GALOSH_RAW_win64.zip — DNG in → denoised DNG out (unchanged from v0.3.0).

SHA256:

8e1f3cd09f965f50344f348cfcb65c201571b538b2776fe75a171b855bbaf76b  GALOSH_YUV_win64.zip
99730d51aae71bcb5d3e08f480a03f9874b31a39c4844d788149c177ba2a2573  GALOSH_RAW_win64.zip

See CHANGELOG.md for the complete list.