Merge pull request #7345 from dotCooCoo/fix/ai-twist-straight-guide-reach

.ai import: straight compound paths whose guides reach past them keep the drawn look under Twist

docs/target-app-parity.md

@@ -1666,7 +1666,7 @@ Moved from the ROADMAP's "Shipped so far" on 2026-10-10. Update it when a featur
     In a `.ai` opened from its editing data, a path or type object with Offset Path, Outline Object or Outline Stroke on the whole object opens as itself with those effects live, in their order and shown or hidden; on a fill or stroke of type they stay on that fill or stroke. Offset Path keeps its Offset, Joins and Miter Limit, and Outline Stroke takes its width from the stroke. An Offset Path with a setting missing, out of range or not read keeps the drawn art, as does a path with a Path effect on one fill or stroke (`crates/eps/src/import/ai/style/tests.rs`, `crates/eps/src/import/ai/tests.rs`, `crates/eps/src/import/tests_native.rs`).
     In a `.ai` or EPS opened from its editing data, a Scatter brush whose last 15 numbers start with 1 comes into the Brushes panel in Tints, and each brush art section is read without its frame, an unnamed, unpainted rectangle with no settings of its own at the art's bounds (within 1/1000 pt). A wider frame stays in the art, and an art group with a state or look of its own (hidden, locked, isolated, knockout, an opacity, a blend mode, a name, a mask, a note or an appearance) stays a group (`crates/eps/src/import/ai/tests.rs`).
     In a `.ai` opened from its editing data, type with Warp on the object or on one of its fills or strokes opens as type with the effect live when the live warp draws as the art saved with it. When it draws differently, or when the file's limit of checks has no check left for it, it opens as that art, and one note says how many did. Type stays live without a comparison when the saved art paints nothing or draws type of its own, in frames of threaded type, when a text variable binds it, and when its text object doesn't come in as one text object (`crates/eps/src/import/ai/envelope.rs`, `crates/eps/src/import/tests_native.rs`).
-    In a `.ai` opened from its editing data, an object with a Tweak that moves nothing or Pucker & Bloat at 0 opens as itself with the effect live. A path, compound path or group whose only effect is Transform without copies, or a Free Distort whose corners make a parallelogram, opens as itself with it live, and so does an object with nothing stroked whose only effect is Twist: a path or compound path with straight segments at up to 180° either way, and another path, compound path or group with no guide in it at up to 90° either way (limits VectorCraft sets); one twisted further keeps the drawn art. A gradient or pattern, an image, type, a clipping group, an opacity mask or effects inside the object, or a stroke with a Transform that scales, rotates or reflects, keep the drawn art (`crates/eps/src/import/ai/style/tests.rs`, `crates/eps/src/import/ai/tests.rs`, `crates/eps/src/import/ai/read/ops.rs`).
+    In a `.ai` opened from its editing data, an object with a Tweak that moves nothing or Pucker & Bloat at 0 opens as itself with the effect live. A path, compound path or group whose only effect is Transform without copies, or a Free Distort whose corners make a parallelogram, opens as itself with it live, and so does an object with nothing stroked whose only effect is Twist: a path or compound path with straight segments at up to 180° either way, unless it is a compound path with a guide member that reaches past its other members and the angle is not 0°, and another path, compound path or group with no guide in it at up to 90° either way (limits VectorCraft sets); one twisted further keeps the drawn art. A gradient or pattern, an image, type, a clipping group, an opacity mask or effects inside the object, or a stroke with a Transform that scales, rotates or reflects, keep the drawn art (`crates/eps/src/import/ai/style/tests.rs`, `crates/eps/src/import/ai/tests.rs`, `crates/eps/src/import/ai/read/ops.rs`).
     A PDF page whose `UserUnit` (PDF 1.6) is above 1 opens at its size in points, its numbers times the `UserUnit` (one above 75,000 counts as 75,000), and `document.pdfInfo` gives its size and boxes in points too. A `.ai` whose editing data has its artboards in the units of such a page opens from that data at the page's size, with its layers, and when the layers can't be read its pages still take the artboard layout of the data, scaled the same way (part of #1482).
     `document.open`, `file.place` and `document.pdfInfo` reject a `cropTo`, `crop`, `password`, `colorMode` or `textAs` that is not a string, such as `"textAs": true`, and `document.pdfInfo` rejects a `thumbnailSize` that is not a number; the error names the param, and nothing opens or is placed. A param left out or given as null keeps its default (`crates/engine/src/cmd/fileio/tests_pdfimport.rs`).
     When the PDF content of a `.ai` has a page for each artboard, the layers are compared with every page on its artboard (until the pages compared take 8,388,608 pixels at the comparison's scale, about 67 letter-size pages, or number 128): art that only the layers or only a later page draws is handled as art that differs on the first page is, and a text object that a later page doesn't draw is left out unless its layer doesn't print (`crates/eps/src/import/tests_native.rs`).