Merge feat/psd-import-options into feat/psd-import-options-import-slices-after-7649

docs/target-app-parity.md

@@ -1845,8 +1845,8 @@ Moved from the ROADMAP's "Shipped so far" on 2026-10-10. Update it when a featur
   - Targa files (`.tga`, `.vda`, `.icb`, `.vst`) open, place linked or embedded, relink and update at their pixel size: color-mapped, true-color and black-and-white, raw or run-length encoded, in any of the four row orders. The image descriptor's attribute bits and the extension area's Attributes Type decide the transparency: a file with no attribute bits, or with attribute data the Attributes Type calls undefined, opens opaque; with one bit, a 16-bit true-color pixel takes that bit as its alpha, and a color-mapped pixel takes the bit of the 16-bit color map entry it indexes; premultiplied colors are divided by their alpha. Open and Place recognize a Targa file by its extension, and `clipboard.importImage` and Glass's Load Texture… by its header; a Targa file copied in a file manager pastes as a bitmap (`crates/engine/src/cmd/fileio/tests_tiffbmp.rs`, `crates/engine/src/tests/links.rs`).
   - BMP files named `.dib` or `.rle` (run-length encoded bitmaps included), Photoshop files named `.pdd` and PNG files named `.pns` open and place, linked or embedded, as BMP, PSD and PNG files, in any letter case: the Open and Place dialogs list them with their format, the Links panel names their format, and Edit Original opens them. Exports write only `.bmp`, `.psd` and `.png` (`crates/engine/src/cmd/fileio/tests_tiffbmp.rs`, `crates/engine/src/cmd/fileio/tests_psdread.rs`, `crates/engine/src/tests/links.rs`).
   - File › Open converts a PSD or PSB file's layers to objects, keeping the layer structure, merging clipped layers into one layer and leaving out hidden layers that would need a merge, as [PSD import options](https://helpx.adobe.com/illustrator/desktop/add-and-import-files/import-from-other-apps/photoshop-import-options.html) describes for the option that converts layers to objects; hidden layers come in with `hiddenLayers`, as Import Hidden Layers brings them in, and `layers: false` opens the merged image. VectorCraft's own rules: each layer becomes a layer holding its pixels with its name, visibility, opacity and blend mode, groups become layers of sublayers, layers in Dissolve, Linear Burn, Linear Dodge, Vivid Light, Linear Light, Pin Light, Hard Mix, Subtract, Divide, Darker Color and Lighter Color are merged with the layers below, layer masks become opacity masks, fill opacity multiplies the opacity (in a layer that others are clipped to, it fades only that layer's own pixels), and adjustment layers, layer effects, knockouts and vector masks aren't applied and are counted in the warnings. 8-, 16- and 32-bit files, PSB, raw, PackBits and zipped channels (`crates/engine/src/cmd/fileio/tests_psdlayers.rs`).
-  - A PSD or PSB file's clipping path, the saved path that image resource 2999 names in the [PSD file format specification](https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/), clips its merged image on File › Place and on File › Open of the merged image, as [PSD import options](https://helpx.adobe.com/illustrator/desktop/add-and-import-files/import-from-other-apps/photoshop-import-options.html) describes for a file imported as one flattened image. The image comes in a clip group whose clipping path has no paint and uses the even-odd rule, and the path can be edited or released. `links.update` and `links.relink` keep the clip group, and files that name no clipping path come in as before (`crates/engine/src/cmd/fileio/tests_psdread.rs`).
   - File › Open of a PSD or PSB file with two or more layers, and File › Place of one without Link, show PSD Import Options: Convert Layers to Objects with Import Hidden Layers, or Flatten Layers to a Single Image, the options [PSD import options](https://helpx.adobe.com/illustrator/desktop/add-and-import-files/import-from-other-apps/photoshop-import-options.html) describes for a file that is opened or embedded. A file placed with Link shows its flat image and isn't asked about. `file.place` takes `layers` and `hiddenLayers`, and `document.psdInfo` counts a file's layers without opening it. VectorCraft's own rules: placed layers come in as one group named after the file, a layer as an image and a layer group as a group, at the place the merged image would take and clipped to the canvas when layers reach past it; the dialog asks from two layers up and starts from the choices made last. Layer comps aren't read (`crates/engine/src/cmd/fileio/tests_psdlayers.rs`, `crates/ui-egui/src/dialogs/psd_import.rs`).
+  - A PSD or PSB file's clipping path, the saved path that image resource 2999 names in the [PSD file format specification](https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/), clips its merged image on File › Place and on File › Open of the merged image, as [PSD import options](https://helpx.adobe.com/illustrator/desktop/add-and-import-files/import-from-other-apps/photoshop-import-options.html) describes for a file imported as one flattened image. The image comes in a clip group whose clipping path has no paint and uses the even-odd rule, and the path can be edited or released. `links.update` and `links.relink` keep the clip group, and files that name no clipping path come in as before (`crates/engine/src/cmd/fileio/tests_psdread.rs`).
   - Import Slices: File › Open of a PSD or PSB file with slices, and File › Place of one without Link, bring its slices in as user slices, as [PSD import options](https://helpx.adobe.com/illustrator/desktop/add-and-import-files/import-from-other-apps/photoshop-import-options.html) describes for a file that is opened or embedded; PSD Import Options offers Import Slices for such a file. `document.open` and `file.place` take `importSlices`, and `document.psdInfo` counts the slices. The slices are read from image resource 1050 in version 6 and in the descriptor of versions 7 and 8, as the [Photoshop File Formats Specification](https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/) describes it. VectorCraft's own rules: Import Slices applies to Convert Layers to Objects and to Flatten Layers to a Single Image alike, and makes the dialog ask for a file with fewer than two layers; placed slices move and scale with the art in the same undo step; each slice keeps its name, type, link, target, message, alternative text, cell text and background color; slices the file generated automatically, and slices wholly outside the canvas, are left out; slices that can't be read are left out with a warning while the art comes in; with Show Import Options off, a PSD file is placed with the PSD Import Options chosen last, and on, each PSD file of the place cursor asks for them (`crates/engine/src/cmd/fileio/tests_psdslices.rs`, `crates/ui-egui/src/dialogs/psd_import.rs`).
   - PCX files (`.pcx`) open and place, from the ZSoft PCX Technical Reference Manual: 1 bit in the header palette's first two colors (black and white when the version has no palette or both colors are the same), 1 bit in two to four planes and 4 bits with up to 16 colors from the header's palette (the EGA colors for versions 0 and 3), 2 bits in the CGA colors that the header's CGA palette settings pick (background, color burst, palette and intensity), 8 bits with the 256-color palette after the image data (gray levels without one) and 24-bit color in three planes, run-length encoded. The header's HDpi and VDpi size the image. A file of another depth or plane count, one cut short, and one whose pixels as RGBA pass the pixel allowance are refused with a message before its pixels are decoded. Open and Place recognize a PCX file by its extension, and `clipboard.importImage` and Glass's Load Texture… by its header; a PCX file copied in a file manager pastes as a bitmap (`crates/engine/src/cmd/fileio/tests_pcxread.rs`).
   - Pixar picture files (`.pxr`) open, place and paste, from "The Format of Stored Pictures" in the Pixar Image Computer manuals: any set of the R, G, B and A channels in 8 or 12 bits, dumped or run-length encoded with all four packet kinds and block ends, in tiles of any size (pixels of border tiles past the picture are dropped). R alone is gray, a missing color channel is 0 and a missing A opaque; 12-bit samples are clamped to 0.0 to 1.0; color matted to black becomes straight color; a null tile is transparent when the picture has A and black otherwise. The offsets aren't read, and the image takes the default resolution. Version 2 headers read like version 0. A file cut short, one with a tile whose writing wasn't finished, one with header values or packets the format doesn't define, and one whose pixels as RGBA pass the pixel allowance are refused with a message. Every reader recognizes a Pixar file by its magic number. Tested on synthetic files only (`crates/engine/src/cmd/fileio/tests_pxrread.rs`).