M4: correct PDF gradient progress dates after review

docs/file-format-parity.md

@@ -398,6 +398,7 @@ Stop opacity on translated artboards remains outside this regression coverage.
 | 2026-10-29 | minor | Affinity import: attached Recolor Adjustment (RcRA) layers import as color overlays with HSL lightness (#4420); scores unchanged. |
 | 2026-10-30 | minor | EMF export: a pattern fill whose tiles stay apart (grid and brick tilings, art inside its tile) is written as one shape for each part of the tile, clipped once to what it fills, instead of every tile in a clip of its own; the picture is the same. A rotated two-colour stripe fill goes from 473 shapes and 246 clips to 2 shapes and 1 clip (122 KB to 61 KB; unrotated 99 KB to 33 KB). Tiles that overlap, hex tilings and tiles with strokes, images or nested clips are written as before (#3911). Tests in `crates/metafile/src/tests.rs` and `scene::merge_tests`; scores and hours unchanged |
 | 2026-10-26 | minor | EPS Save and Save As: an opened EPS saves back to its own path as EPS, keeping the chosen artboard's page frame and transparent margins and the complete editable VectorCraft document; Save's TIFF preview is capped at 1024 px (Export keeps 2048); partly read, preview-only or damaged-editing-data sources still need confirmation before they are overwritten; Save As leaves out the export-only crop and selection options. Synthetic regressions in `tests::save` (engine and UI) and `dialogs::save_options::tests`, listed under [EPS Save and source protection](#eps-save-and-source-protection); it does not write Illustrator's own editing data (#868), and G9's real-file import fidelity is unchanged; scores and hours unchanged |
+| 2026-10-26 | minor | PDF form-gradient placement checked with Quartz on the shared writer; scores and estimates unchanged. |
 | 2026-10-25 | minor | `.ai` import: the editing data is read up to 512 MiB on 64-bit builds (the limit was 256 MiB), so a file whose embedded rasters unpack to 300 MiB or more keeps its layers, groups and text instead of opening as its PDF part (part of #3510); 32-bit and web builds keep 256 MiB. Own-fixture test `import::ai::tests::editing_data_past_256_mib_is_read`; scores and hours unchanged |
 | 2026-10-25 | minor | `.ai` import: the `--` placeholder of a radial gradient's highlight (`-- -- angle length Bh`, a gradient without one) and the `XC` operator after a linked image's file name no longer send the whole file to its PDF part, so files with them keep their layers, groups and live text (#4176). A `--` anywhere else is still an operator the reader doesn't know. Own-fixture tests in `import::ai::tests`; scores and hours unchanged |
 | 2026-10-24 | minor | EPS, EMF/WMF and legacy `.ai`: type with ruby (ふりがな) is written with the reading's glyphs where the canvas draws them (they were dropped); legacy `.ai` writes such type as outlines, since a text object can't hold ruby. Tests `eps::tests::ruby_is_written_with_its_type`, `tests_legacy_ai::type_with_ruby_is_outlines_with_the_reading`, `metafile::tests::ruby_is_written_with_its_type`; scores and hours unchanged |