Integration: #2793 parity notes say malformed Decode keeps the default mapping

ROADMAP.md

@@ -176,7 +176,6 @@ Ranked; detail and the full milestone table in [docs/roadmap.md](docs/roadmap.md
 - **2026-10-13 (G14, Vietnamese localization):** Added Vietnamese (`vi`, Tiếng Việt) as an interface and date language with a 2,591-entry catalog (`plural_none`) covering 100% of the current localizable key union (plus `theme`/`Appearance`). Locale tags `vi` / `vi-VN` / `vi_VN.UTF-8` resolve; calendar months use numeric `Tháng 1`…`12` / `tháng 1`…`12`. Native-speaker community review recorded. The twelve-language localization mean moves from ≈59% to ≈68%; weighted readiness ≈49% → ≈50%. Status stays `partial`: engine/OS details, document contents, filenames, CLI/MCP and external help stay outside the catalog by design.
 
 - **2026-10-14 (M1, Flate fallback):** Raw deflate whose first bytes resemble a zlib header no longer loses a decoding-limit error during fallback. Strict and tolerant filter regressions and a COS stream regression cover refusal at the caller limit and successful decoding within it. No parity status or estimate changes.
-
 - **2026-10-13 (M4, indirect page rotation):** Rotation queries and edits resolve indirect integer values on pages and their page-tree ancestors. Turning a page already at 270° by 90° now saves it at 0°, including when its rotation is inherited. Synthetic full/incremental save-and-reopen tests cover nested inheritance, sibling preservation, negative/large angles and invalid-value fallback. Estimates unchanged.
 - **2026-10-12 (M6, XML field names):** AcroForm XML data export constrains generated element names to XML 1.0 NCNames, so Latin-1 names such as `Area²` and `Aµ` produce readable data files. Original PDF field names travel through the existing `xfdf:original` attribute; previously valid tags, including Greek and CJK, keep their spelling. Saved-PDF regressions cover invalid prefixes, combining letters and normalized-name collisions. Estimates unchanged.
 - **2026-10-12 (M6, CSV carriage returns):** Form-data CSV export quotes carriage returns in field names and values, so a trailing carriage return cannot turn into a record separator and disappear on reimport. Saved-PDF round-trip regressions cover CR, LF, CRLF, commas and quotes; estimates unchanged.

parity/acrobat-features.toml

@@ -2131,7 +2131,7 @@ status = "shipped"
 commands = ["edit.edit_text"]
 tools = ["image_save"]
 evidence = ["crates/edit/src/tests.rs::page_images_move_turn_replace_and_delete", "crates/ui-egui/tests/editing.rs::editing_existing_images_on_the_page", "crates/automation/tests/automation.rs::editing_page_images_through_tools", "crates/create/src/tests.rs::images_export_as_jpeg_unchanged_and_others_as_png", "crates/create/src/tests.rs::lossless_decode_maps_each_component_before_colour_conversion", "crates/create/src/tests.rs::lossless_indexed_decode_rounds_in_index_units_then_clamps"]
-notes = "right-click an image ▸ Save Image As: JPEG unchanged, others PNG. Lossless images apply per-component Decode; Indexed values round and clip before palette lookup. Malformed Decode arrays return an error. Still limited: 16-bit samples use high bytes; general JPEG and mask Decode, ICC transforms, and calibrated colors remain unsupported."
+notes = "right-click an image ▸ Save Image As: JPEG unchanged, others PNG. Lossless images apply per-component Decode; Indexed values round and clip before palette lookup. Missing, null or malformed Decode arrays keep the default mapping. Still limited: 16-bit samples use high bytes; general JPEG and mask Decode, ICC transforms, and calibrated colors remain unsupported."
 
 [[feature]]
 id = "edit.image-external-editor"
@@ -7077,7 +7077,7 @@ status = "shipped"
 commands = ["export.all_images"]
 tools = ["doc_export_all_images"]
 evidence = ["crates/create/src/tests.rs::images_export_as_jpeg_unchanged_and_others_as_png", "crates/create/src/tests.rs::indexed_and_one_bit_images_decode", "crates/create/src/tests.rs::jpeg_images_with_a_soft_mask_export_as_png_with_alpha", "crates/create/src/tests.rs::soft_masks_of_another_size_and_stencil_and_colour_key_masks_become_alpha", "crates/automation/tests/automation.rs::exporting_all_images_through_tools", "crates/ui-egui/tests/export.rs::export_dialogs_write_images_and_text", "crates/create/src/tests.rs::lossless_decode_maps_each_component_before_colour_conversion", "crates/create/src/tests.rs::lossless_indexed_decode_rounds_in_index_units_then_clamps"]
-notes = "each image once (page resources and nested forms); JPEG unchanged unless it has transparency, others PNG (gray/RGB/CMYK/ICC/Indexed, 1–16 bpc, stencil masks); transparency as PNG alpha: /SMask (scaled to the image size, /Matte un-blended), stencil /Mask and colour-key /Mask, JPEG images included (#645); JPX/JBIG2/CCITT masks are left out (image exported opaque); JPX/JBIG2/CCITT/separations reported as skipped; minimum size filter. Lossless images apply per-component Decode; Indexed values round and clip before palette lookup. Malformed Decode arrays return an error. Still limited: 16-bit samples use high bytes; general JPEG and mask Decode, ICC transforms, and calibrated colors remain unsupported."
+notes = "each image once (page resources and nested forms); JPEG unchanged unless it has transparency, others PNG (gray/RGB/CMYK/ICC/Indexed, 1–16 bpc, stencil masks); transparency as PNG alpha: /SMask (scaled to the image size, /Matte un-blended), stencil /Mask and colour-key /Mask, JPEG images included (#645); JPX/JBIG2/CCITT masks are left out (image exported opaque); JPX/JBIG2/CCITT/separations reported as skipped; minimum size filter. Lossless images apply per-component Decode; Indexed values round and clip before palette lookup. Missing, null or malformed Decode arrays keep the default mapping. Still limited: 16-bit samples use high bytes; general JPEG and mask Decode, ICC transforms, and calibrated colors remain unsupported."
 
 [[feature]]
 id = "create.export-html"