M7: review follow-up, attribute the ICU4X word dictionaries

icu_segmenter_data compiles the Thai, Lao, Khmer and Burmese word
dictionaries (data/segmenter_dictionary_extended_v1.rs.data, 1,773,172
bytes by the file's own count) into the binary, so they get a [[bundled]]
entry per AGENTS.md §1.3, and NOTICE carries the Unicode licence's
copyright and permission notice, which it requires in the documentation.
The line segmenter loads only these dictionaries; the Chinese and Japanese
one is not linked.

The data is under Unicode-3.0, which deny.toml already allows for code but
the asset allowlist (AGENTS.md §1.2, xtask ALLOWED_LICENCES) did not list,
so this adds it there. That is a policy change for the maintainers to
accept; without it `cargo xtask assets` refuses the entry.

Requested in FredApps' review of #3492.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018cECVMvRnc9mHNFfVp7nXd

AGENTS.md

@@ -30,7 +30,7 @@ An **asset** is any non-code material that the project includes, ships, embeds,
 ### 1.2 Only open, provable licences
 
 Every asset must be one of:
-- **Open source:** ISC, MIT, BSD-2-Clause, BSD-3-Clause, Apache-2.0, OFL-1.1, Ubuntu-Font-1.0 or Bitstream-Vera.
+- **Open source:** ISC, MIT, BSD-2-Clause, BSD-3-Clause, Apache-2.0, OFL-1.1, Ubuntu-Font-1.0, Bitstream-Vera or Unicode-3.0 (Unicode, Inc. data such as ICU4X's line-breaking dictionaries; already allowed for code in `deny.toml`).
 - **Creative Commons:** CC0-1.0, CC-BY-4.0 or CC-BY-SA-4.0.
 - **Public domain.**
 - **Contributor-original:** created, photographed or generated by a contributor who owns it and licenses it under the project licence (`MIT OR Apache-2.0`).

ATTRIBUTION.md

@@ -298,7 +298,7 @@ Every asset PdfCraft includes, bundles or uses to build its published material,
 | `crates/ui-egui/src/i18n/th.tsv` | Thai interface translation catalog | PdfCraft contributors | MIT OR Apache-2.0 | Contributor-original: clean-room translations of PdfCraft's English UI labels, no proprietary localisation resources; 2026-10-22 page-gap labels are contributor-original AI-assisted translations from English, not separately native-reviewed; 2026-10-22 secured-document notice labels are contributor-original AI-assisted translations from English, not separately native-reviewed; the 2026-10-22 reply-count label is an AI-assisted translation from English, not separately native-reviewed | Thai UI strings, compiled in by crates/ui-egui/src/i18n.rs |
 | `crates/ui-egui/src/i18n/ca.tsv` | Catalan interface translation catalog | PdfCraft contributors | MIT OR Apache-2.0 | Contributor-original: clean-room translations of PdfCraft's English UI labels, written from their meaning; no proprietary localisation resources; 2026-10-22 page-gap labels are contributor-original AI-assisted translations from English, not separately native-reviewed; 2026-10-22 text-field-table labels are contributor-original AI-assisted translations from English, not separately native-reviewed; 2026-10-22 secured-document notice labels are contributor-original AI-assisted translations from English, not separately native-reviewed; the 2026-10-22 reply-count label is an AI-assisted translation from English, not separately native-reviewed | Catalan UI strings, compiled in by crates/ui-egui/src/i18n.rs |
 
-## Compiled in through dependencies (6)
+## Compiled in through dependencies (7)
 
 | Crate | File | Title | Author | Licence | Source | Used for |
 |---|---|---|---|---|---|---|
@@ -308,6 +308,7 @@ Every asset PdfCraft includes, bundles or uses to build its published material,
 | `epaint_default_fonts` 0.37.0 | `fonts/emoji-icon-font.ttf` | emoji-icon-font | John Slegers | MIT | https://github.com/jslegers/emoji-icon-font | egui monochrome fallback font (egui feature monochrome_emoji_fonts) |
 | `epaint_default_fonts` 0.37.0 | `fonts/egui-icons.ttf` | egui icons (monochrome emoji-icon-font subset) | John Slegers | MIT | https://github.com/jslegers/emoji-icon-font | Small special-icon subset embedded by egui default_fonts; retained in FontDefinitions::default(). Provenance: https://github.com/storytold/egui/blob/6d518fc799681571963842f95b55a6b68431b15a/crates/epaint_default_fonts/fonts/egui-icons.txt; complete MIT copyright and permission text in NOTICE. |
 | `hayro-interpret` 0.7.0 | `src/font/generated/metrics.rs` | Standard-14 font metrics and encodings (as Rust tables) (non-visual data, AGENTS.md §1.1) | Adobe (Core 14 AFM metrics, PDF specification encodings); tables by The Hayro Authors | MIT OR Apache-2.0 | ISO 32000-2 Annex D; Adobe Core14 AFM files (via vendored hayro-interpret) | Glyph widths and encodings for non-embedded standard fonts. Non-visual data, allowed by AGENTS.md §1.1 |
+| `icu_segmenter_data` 2.3.0 | `data/segmenter_dictionary_extended_v1.rs.data` | Southeast Asian word dictionaries for line breaking (Thai, Lao, Khmer, Burmese) | The ICU4X Project Developers; word lists from the ICU project (Unicode, Inc.) | Unicode-3.0 | https://github.com/unicode-org/icu4x (via icu_segmenter_data) | Word boundaries for wrapping Thai text in Edit text and Add text (crates/edit/src/linebreak.rs). Non-visual data; the line segmenter loads only these dictionaries, not the Chinese and Japanese one |
 
 ## Downloaded at build time (22)
 

ATTRIBUTION.toml

@@ -2522,6 +2522,18 @@ adobe_data = true
 usage = "Glyph widths and encodings for non-embedded standard fonts. Non-visual data, allowed by AGENTS.md §1.1"
 sha256 = "2ec9e608573eda459de1e1d9bda3bb494315e36bee885acc88912a11fe0caa41"
 
+[[bundled]]
+crate = "icu_segmenter_data"
+version = "2.3.0"
+path = "data/segmenter_dictionary_extended_v1.rs.data"
+title = "Southeast Asian word dictionaries for line breaking (Thai, Lao, Khmer, Burmese)"
+author = "The ICU4X Project Developers; word lists from the ICU project (Unicode, Inc.)"
+source = "https://github.com/unicode-org/icu4x (via icu_segmenter_data)"
+licence = "Unicode-3.0"
+kind = "data"
+usage = "Word boundaries for wrapping Thai text in Edit text and Add text (crates/edit/src/linebreak.rs). Non-visual data; the line segmenter loads only these dictionaries, not the Chinese and Japanese one"
+sha256 = "cad3821ca44fdb88ed856ff3336444aa200afe7b9d19e34ac28ae6a4459d4c6d"
+
 [[fetched]]
 file = "PlayfairDisplay[wght].ttf"
 url = "https://raw.githubusercontent.com/google/fonts/9710da1eacb3be272583c3224dcb70f9da6eadbb/ofl/playfairdisplay/PlayfairDisplay%5Bwght%5D.ttf"

NOTICE

@@ -36,6 +36,8 @@ list (author, source, license) is in ATTRIBUTION.md.
 - egui default fonts (epaint_default_fonts, via eframe) — Ubuntu Light (Ubuntu Font Licence 1.0),
   Hack (MIT / Bitstream Vera licence), Noto Emoji (SIL OFL 1.1), emoji-icon-font (MIT).
 - Colour profile in hayro-interpret — CGATS001Compat-v2-micro.icc (CC0-1.0, Clinton Ingram).
+- ICU4X line-breaking data (icu_segmenter_data, via crates.io) — Unicode-3.0. Its Thai, Lao, Khmer
+  and Burmese word dictionaries are compiled in for wrapping Thai text; notice below.
 
 Required notices:
 
@@ -48,6 +50,32 @@ Required notices:
     (https://github.com/adobe-type-tools/cmap-resources/blob/master/LICENSE.txt). Neither the name of
     Adobe nor the names of its contributors are used to endorse or promote this product.
 
+  ICU4X segmenter data (bundled by icu_segmenter_data 2.3.0; word lists, not visual assets):
+    Copyright © 2020-2024 Unicode, Inc. Portions adapted from ICU4C and/or ICU4J:
+    ICU 1.8.1 to ICU 57.1 © 1995-2016 International Business Machines Corporation and others.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy of data files and any
+    associated documentation (the "Data Files") or software and any associated documentation (the
+    "Software") to deal in the Data Files or Software without restriction, including without
+    limitation the rights to use, copy, modify, merge, publish, distribute, and/or sell copies of the
+    Data Files or Software, and to permit persons to whom the Data Files or Software are furnished to
+    do so, provided that either (a) this copyright and permission notice appear with all copies of
+    the Data Files or Software, or (b) this copyright and permission notice appear in associated
+    Documentation.
+
+    THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+    PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+
+    IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM,
+    OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+    USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+    ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THE DATA FILES OR SOFTWARE.
+
+    Except as contained in this notice, the name of a copyright holder shall not be used in
+    advertising or otherwise to promote the sale, use or other dealings in these Data Files or
+    Software without prior written authorization of the copyright holder.
+
 Showcase PDF (built by `cargo xtask demo-pdf`, not committed): fonts are downloaded at build time from
 google/fonts at a pinned commit, verified by SHA-256, all under the SIL Open Font License 1.1 — see the
 "Downloaded at build time" table in ATTRIBUTION.md.

xtask/src/assets.rs

@@ -30,6 +30,7 @@ pub const ALLOWED_LICENCES: &[&str] = &[
     "OFL-1.1",
     "Ubuntu-font-1.0",
     "Bitstream-Vera",
+    "Unicode-3.0",
     "CC0-1.0",
     "CC-BY-4.0",
     "CC-BY-SA-4.0",