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dev-null-undefinedandClaude
85cc4273be
New vendor::arw_lens_rm6 reads the raw IFD's lens tables (0x7037 distortion, 0x7032 vignetting, 0x7035 lateral CA, their flags) and turns the distortion table into a one-plane WarpRectilinear in OpcodeList3, with the conventions measured on 54 ILCE-7RM6 photos: knots at i/15 of the full-frame crop half diagonal, S(r) = r (1 + v(r)/15000), frame-filling zoom, centred on the default crop. Only the ILCE-7RM6 is enabled; vignetting is read, not applied. The radial least-squares fit is split out as vendor::fit_radial_warp (RW2 results unchanged); its error gate can be limited to the radii the crop shows, so a padded active area (lossless files) doesn't refuse a fit over pixels that are never rendered. It sits next to main's vendor::arw_lens (#498), which holds the ILCE-7RM4A conventions measured against Sony's exports (unit 16384, table indexed at the output radius); the two are selected by camera model (disjoint allowlists). arw::decode chains this module's opcodes after arw_lens::distortion, with the same active area and the same crop (the DNG-style default crop when the file has one, which on the ILCE-7RM6 equals Sony's crop tags), and like it only for CFA data (not the downsized linear-RGB lossless sizes, where the knot spacing in full-frame pixels would not hold). The corpus test checks the conversion on the two lossless RawDB files (CC0). The APS-C one is pinned in xtask RAW_SAMPLES with its sha256; the full-frame one is not (at most two pins per PR, and #625 pins two Compressed ARW 6.0 files), so its case runs only where the file is present. RENDER_CACHE_VERSION 62 -> 63. Co-Authored-By: Claude <noreply@anthropic.com>