fix(eps): a layer's state after its last blend stays the layer's

#4757 gives a blend the Xy written after its record. When the blend is a
layer's last object, the layer's own state block (Xy, Xd, 7 () XW, LB)
went to the blend instead, and the layer stayed opaque. The blend's state
is now tentative like a mesh's (#4748): its own 6 () XW confirms it, the
layer's LB gives it to the layer and the blend keeps what it had.

Also records the .ai/EPS audit fixes under G9, the File formats row and M4.

docs/file-format-parity.md

@@ -132,6 +132,7 @@ the app's own editing copy of a file (an EPS after its `%%EOF`, a `.ai`'s `AIPri
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-30 | minor | `.ai`/EPS editing data: a blend takes the transparency (opacity, blend mode, knockout; blends are written with knockout on) in the state block after its record, as a group takes the one after its end; it was left for the next object, so a blend's steps of falling opacity drew over each other instead of knocking each other out, and every such blend came in too dark (a user's file has 143, its bubbles came in as dark rings). Both a live blend and drawn steps kept as a group take it. Test `import::ai::tests::a_blends_transparency_follows_its_record`; checked locally against that file: it comes 1.3% → 0.6% nearer its page, though a mesh seen through a mesh-shaped opacity mask still keeps it just over the limit. When a blend is the layer's last object and the layer's own state block (`7 () XW`, then `LB`) follows, the state is the layer's and the blend keeps its own, as for meshes (#4748); scores unchanged |
 | 2026-10-31 | minor | PDF (and `.ai`) with Illustrator editing data saved with only some of its artboards: its pages are those artboards, while the editing data keeps them all, and the layers were compared with the first page on the first artboard, so a page of the second artboard came in as the PDF part, without its layers. With fewer pages than artboards, the first page is now taken to be the artboard of its size whose art draws most like it (up to 16 weighed), and the pages' type goes to that artboard and the ones after it. All artboards come in, as before. Test `import::tests_native::a_pdf_of_its_second_artboard_is_compared_on_that_artboard`; scores unchanged |
 | 2026-10-30 | minor | `.ai`/EPS editing data: a blend takes the transparency (opacity, blend mode, knockout; blends are written with knockout on) in the state block after its record, as a group takes the one after its end; it was left for the next object, so a blend's steps of falling opacity drew over each other instead of knocking each other out, and every such blend came in too dark (a user's file has 143, its bubbles came in as dark rings). Both a live blend and drawn steps kept as a group take it. Test `import::ai::tests::a_blends_transparency_follows_its_record`; checked locally against that file: it comes 1.3% → 0.6% nearer its page, though a mesh seen through a mesh-shaped opacity mask still keeps it just over the limit; scores unchanged |
 | 2026-10-30 | minor | `.ai`/EPS editing data: a gradient mesh with an opacity mask takes the transparency (`Xy`) written after the mask's dictionary, as one without a mask takes the one right after its `/End X!`; the operators of the mask's art (on `%_` lines) hid it, so the state was read as the next object's and each masked mesh in a run drew with the blend mode of the one before it (a Multiply shading drawn Normal, an Overlay tint drawn Multiply over the art below). Test `import::ai::tests::a_masked_gradient_mesh_takes_the_transparency_written_after_its_mask`; checked locally against a user's files: one opens from its layers 0.1% from its page (it was 0.6%, just inside the limit), another comes 1.6% → 1.3% nearer; scores unchanged |

docs/gaps.md

@@ -152,6 +152,8 @@ from G14 and the budget run of G15: **~170–270 h** one agent, ~50–80 h wall
 
 ## G9 Illustrator `.ai` and EPS files from real users
 
+- **Done (2026-10-30):** from an audit of a user's `.ai`/EPS files: All Caps and Small Caps; placed files at their box's corner; pages cropped to the art; gradient mesh corners with handle weights of 0 and the transparency written after a mesh, a masked mesh and a blend; a layer's state block with the stroke style; type on a path spaced as the file lays it out; EPS10 legacy-format type; a PDF of some artboards compared on the artboard its page shows. Comparison limits remain unchanged. This narrows G9; scores and estimates unchanged.
+
 - **Save-back update (2026-10-26):** ordinary EPS Save retains page margins and the whole editable document; source-loss confirmation remains. Import fidelity gaps and estimates below are unchanged.
 
 - **Done (2026-10-16):** EPS legacy mesh corners and vector opacity masks retained; winding-declared compound member groups keep shared paint. Raster print-page minification no longer causes a false editing-data fallback; comparison limits remain unchanged. Synthetic regressions cover damage and missing artwork. This narrows G9; scores and estimates unchanged.
@@ -657,6 +659,7 @@ trap, and the defaults (0.25 pt, 100%, 40%) are VectorCraft's own, the pages giv
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-30 | minor | G9: `.ai`/EPS editing data: a blend takes the transparency (opacity, blend mode, knockout) in its state block after its record, so its steps knock each other out as the page draws them; a user's file comes in 0.6% from its page instead of 1.3%. Scores and estimates unchanged. |
 | 2026-10-30 | minor | G1: Object › Path › Average & Join… (`path.averageJoin`, Cmd+Alt+Shift+J) moves two open path ends to their midpoint and joins them there, the joined anchor a corner or a smooth point as its dialog's Points choice asks, in one undo step; the "Average and Join in one step" entry is done. Estimate unchanged |
 | 2026-10-30 | minor | G12: Preferences audit (#394): 5 options are stored but not acted on (Open Documents As Tabs, Units › East Asian Type, Hyphenation › Default Language, Scratch Disks, Legacy vector clipboard), each waiting on a subsystem; Highlight Alternate Glyphs, Real-time Drawing and the Devices options act. Estimate unchanged. |
 | 2026-10-29 | minor | G10: the Linux Flatpak on GNOME copies and pastes text through the core Wayland protocol; pictures and `image/svg+xml` there listed as missing. Estimate unchanged. |

docs/roadmap.md

@@ -19,6 +19,7 @@ Artboard Options forwards the active Artboard tool's Scale Artwork with Artboard
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-30 | minor | M4: G9: `.ai`/EPS editing data: a blend takes the transparency (opacity, blend mode, knockout) in its state block after its record, so its steps knock each other out as the page draws them; a user's file comes in 0.6% from its page instead of 1.3%. Scores and estimates unchanged. |
 | 2026-10-30 | minor | M4: File formats: `.ai`/EPS editing-data fidelity from an audit of a user's files: All Caps and Small Caps (#4708); placed files at their box's corner, kept where they draw closer to the page (#4664, #4723, #4742); pages cropped to the art, with `UserUnit` (#4658, #4727); gradient mesh corners with handle weights of 0 and the state written after a mesh (#4738, #4744, #4748); type on a path spaced as the file lays it out (#4743); synthetic regressions in `crates/eps`; scores and estimates unchanged. |
 | 2026-10-30 | minor | Raster effects: bounded length fields in effect dialogs clamp on commit and reject invalid inputs visibly (#4638); estimates unchanged. |
 | 2026-10-22 | minor | Reconcile upstream documentation after review F-3; preserve every dated revision and the original scaleArt runtime evidence without repeating completed jobs. |
@@ -140,6 +141,7 @@ separate. Scores and hours unchanged. [Behavior and command details](development
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-30 | minor | M4: G9: `.ai`/EPS editing data: a blend takes the transparency (opacity, blend mode, knockout) in its state block after its record, so its steps knock each other out as the page draws them; a user's file comes in 0.6% from its page instead of 1.3%. Scores and estimates unchanged. |
 | 2026-10-30 | minor | M4: File formats: `.ai`/EPS editing-data fidelity from an audit of a user's files: All Caps and Small Caps (#4708); placed files at their box's corner, kept where they draw closer to the page (#4664, #4723, #4742); pages cropped to the art, with `UserUnit` (#4658, #4727); gradient mesh corners with handle weights of 0 and the state written after a mesh (#4738, #4744, #4748); type on a path spaced as the file lays it out (#4743); synthetic regressions in `crates/eps`; scores and estimates unchanged. |
 | 2026-10-29 | minor | M6: Pathfinder: live compound shapes (#4522): the panel menu's Make, Release and Expand Compound Shape, Alt-clicking a Shape Mode, a selected member's Shape Mode and the Expand button act; scores unchanged |
 | 2026-10-26 | minor | M4/G9: 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; it does not write Illustrator's own editing data (#868), and G9's real-file import fidelity is unchanged; scores and estimates unchanged |

docs/target-app-parity.md

@@ -19,6 +19,7 @@ Artboard Options forwards the active Artboard tool's Scale Artwork with Artboard
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-30 | minor | File formats: `.ai`/EPS editing data: a blend takes the transparency (opacity, blend mode, knockout) in its state block after its record, so its steps knock each other out as the page draws them; a user's file comes in 0.6% from its page instead of 1.3%. Scores and estimates unchanged. |
 | 2026-10-30 | minor | File formats: `.ai`/EPS editing-data fidelity from an audit of a user's files: All Caps and Small Caps (#4708); placed files at their box's corner, kept where they draw closer to the page (#4664, #4723, #4742); pages cropped to the art, with `UserUnit` (#4658, #4727); gradient mesh corners with handle weights of 0 and the state written after a mesh (#4738, #4744, #4748); type on a path spaced as the file lays it out (#4743); synthetic regressions in `crates/eps`; evidence added; scores unchanged. |
 | 2026-10-30 | minor | Effects: bounded length inputs clamp on commit and reject invalid text visibly (#4638); scores unchanged. |
 | 2026-10-29 | minor | File formats: attached Affinity Recolor Adjustment (RcRA) layers import as color overlays (#4420); scores unchanged. |
@@ -134,7 +135,7 @@ dominate; 3D, graphs and automation are specialist). They sum to 105. Feature de
 | Image Trace, graphs, image tools | 3 | 75% | graph Column designs, Image Trace Create Strokes depth (Create Object Mosaic is done; junction-returning piece survival has source-generated regressions in `image-trace-quality.md`; large images trace with a warning; Auto Color keeps rare distinct colours) | 5–8 | estimated (raised from 72%); quick presets reveal adjustment controls, Properties reopens them |
 | Layers, artboards, document setup | 5 | 78% | Selected-artboard deletion is consistent across panel actions (all-selected retains artboard 1); history prunes removed indices while preserving valid multiselection; remaining:  30.0's artboard locking and colours and managing artboards from the canvas, Layers panel row context menus and Collect for Export (click-to-fit objects is done, #1227) | 5–8 | estimated (lowered from 82%: target moved); Artboard deletion keys keep artwork and the first of an all-selected set; Artboard Options' Show Center Mark and Show Cross Hairs draw on the canvas only (exports and print leave them out), regression-tested; Artboard Options' Show Video Safe Areas and Video Ruler Pixel Aspect Ratio (per artboard, native format) are done ([video display options](#evidence-what-ships-today-by-area)), score unchanged |
 | View & navigation | 3 | 70% | multiple windows and Arrange | 9–14 | estimated; document-tab artwork hover/copy and lossless transfer tested (2026-10-22; score/hours unchanged); cached canvas reprojection preserves scale during resize, rotation and DPI changes (regression and contributor original-file evidence below; scores/hours unchanged); cached canvas dimensions match the renderer limit before cache-key creation, view construction and worker submission (regression evidence below) |
-| File formats | 6 | 75% | `.ai` files open with a flattened or wrong layer structure in real cases (#951), guides lost (#779), no writing of Illustrator's editing data (#868), FreeHand/CorelDRAW/DWG/HEIC/JPEG 2000 import, 3D export; see [file-format-parity.md](file-format-parity.md); EPS legacy mesh/opacity-mask and raster comparison follow-up verified | 10–20 | estimated (lowered from 85%: open issues); DXF control-point SPLINE import closure regression-tested (#1299 follow-up after #1320); PDF writer metadata, reader streaming and immutable backend checks in `crates/pdf/src/tests.rs`, `crates/pdf/src/tests/reader_streaming.rs` and `xtask/src/pdf_deps.rs`; PDF Place and clipboard paste retain live text (synthetic regressions); EPS ordinary Save retains the page frame and editable document (2026-10-26); `.ai`/EPS editing data checked against a user's files (2026-10-30): case setting (`ate::tests`, `tests_native::type_from_the_text_document_keeps_its_case_setting`), placed-file placements (`tests_native::a_small_placed_file_goes_where_it_draws_closer_to_the_page`), pages cropped to the art (`tests_native::type_on_the_copies_of_a_page_cropped_to_the_art_is_read_once`), mesh corner weights and state (`ai::mesh::tests::corners_with_handle_weights_of_zero_are_read`, `ai::tests::a_gradient_mesh_takes_the_transparency_written_after_it`), type on a path spacing (`tests_native::type_round_a_circle_is_spaced_as_the_file_lays_it_out`); scores and estimates unchanged. |
+| File formats | 6 | 75% | `.ai` files open with a flattened or wrong layer structure in real cases (#951), guides lost (#779), no writing of Illustrator's editing data (#868), FreeHand/CorelDRAW/DWG/HEIC/JPEG 2000 import, 3D export; see [file-format-parity.md](file-format-parity.md); EPS legacy mesh/opacity-mask and raster comparison follow-up verified | 10–20 | estimated (lowered from 85%: open issues); DXF control-point SPLINE import closure regression-tested (#1299 follow-up after #1320); PDF writer metadata, reader streaming and immutable backend checks in `crates/pdf/src/tests.rs`, `crates/pdf/src/tests/reader_streaming.rs` and `xtask/src/pdf_deps.rs`; PDF Place and clipboard paste retain live text (synthetic regressions); EPS ordinary Save retains the page frame and editable document (2026-10-26); `.ai`/EPS editing data checked against a user's files (2026-10-30): case setting (`ate::tests`, `tests_native::type_from_the_text_document_keeps_its_case_setting`), placed-file placements (`tests_native::a_small_placed_file_goes_where_it_draws_closer_to_the_page`), pages cropped to the art (`tests_native::type_on_the_copies_of_a_page_cropped_to_the_art_is_read_once`), mesh corner weights and state (`ai::mesh::tests::corners_with_handle_weights_of_zero_are_read`, `ai::tests::a_gradient_mesh_takes_the_transparency_written_after_it`), type on a path spacing (`tests_native::type_round_a_circle_is_spaced_as_the_file_lays_it_out`), blend state (`ai::tests::a_blends_transparency_follows_its_record`); scores and estimates unchanged. |
 | View & navigation | 3 | 70% | multiple windows and Arrange | 9–14 | estimated; document-tab artwork hover/copy and lossless transfer tested (2026-10-22; score/hours unchanged); cached canvas reprojection preserves scale during resize, rotation and DPI changes (regression and contributor original-file evidence below; scores/hours unchanged) |
 | View & navigation | 3 | 70% | multiple windows and Arrange | 9–14 | estimated |
 | Guides, grids, smart guides, snapping, rulers | 3 | 80% | 30.0's tangent snapping to curves and perpendicular snapping to straight segments for lines drawn with the Pen, Curvature and Line Segment tools (Preferences › Smart Guides › Geometric Guides and Control bar › Snapping, #2530; other tool and drag cases remain), "intersect" smart guides for a moved selection's anchors (drawn points and dragged anchors snap to intersections, #1658), distance readouts while drawing | 4–7 | estimated (lowered from 85%: target moved); new ruler-guide Alt orientation implemented; video rulers (View › Rulers › Show Video Rulers, #2849) done, score unchanged |
@@ -1324,6 +1325,7 @@ add-on.
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-30 | minor | File formats: `.ai`/EPS editing data: a blend takes the transparency (opacity, blend mode, knockout) in its state block after its record, so its steps knock each other out as the page draws them; a user's file comes in 0.6% from its page instead of 1.3%. Scores and estimates unchanged. |
 | 2026-10-31 | minor | Path Precision Tools add-on: the Corner Tool and Slide Anchor Along Path; evidence added; scores unchanged. |
 | 2026-10-30 | minor | File formats: `.ai`/EPS editing-data fidelity from an audit of a user's files: All Caps and Small Caps (#4708); placed files at their box's corner, kept where they draw closer to the page (#4664, #4723, #4742); pages cropped to the art, with `UserUnit` (#4658, #4727); gradient mesh corners with handle weights of 0 and the state written after a mesh (#4738, #4744, #4748); type on a path spaced as the file lays it out (#4743); synthetic regressions in `crates/eps`; evidence added; scores unchanged. |
 | 2026-10-31 | minor | Artwork Cleanup add-on (a VectorCraft addition): text tools; evidence added; scores unchanged. |