M14: complete Simplified Chinese translation catalog (#209)

* M14: complete Simplified Chinese translation catalog

* M14: translate new XFA notices and counts

---------

Co-authored-by: Brandon Thomas <[email protected]>

ATTRIBUTION.toml

@@ -19,7 +19,7 @@ licence = "MIT OR Apache-2.0"
 licence_file = "LICENSE-MIT"
 kind = "translation"
 usage = "Simplified Chinese UI strings, compiled in by crates/ui-egui/src/i18n/mod.rs"
-sha256 = "1a39d1886fed368cc5e23c376505074b3955fd8bcbcd0678209126ce07a10a95"
+sha256 = "16aafe71a832e881671ef63102b94346717885a14e6e33f41d9d6c0734bc95d6"
 
 [[asset]]
 path = "crates/ui-egui/src/i18n/zh-hant.tsv"

ROADMAP.md

@@ -103,7 +103,7 @@ Hours are for a single agent (low–high). "Done" is the estimated fraction of t
 | M11 | Optimize, preflight, PDF/A/X/UA, print production | 200–350 | 18% | 165–290 | Done: new `optimize` crate: Reduce File Size and the PDF Optimizer (images measured where drawn, bicubic downsampling, JPEG/ZIP recompression only when smaller, discard objects and user data, Flate clean-up, resource merging, object streams). Missing: fonts and transparency panels, space audit, preflight, PDF/A/X/UA |
 | M12 | Accessibility, compare, measure, search, XFA | 200–380 | 20% | 160–305 | Done: new `a11y` crate with the Accessibility Checker (all 32 rules, report, Fix/Skip/Explain, options dialog and results panel, agent tools). Missing: autotag, Tags/Order/Content panels, Reading Order tool, alt-text workflow, compare, measure, search index, XFA |
 | M13 | Automation (MCP, Action Wizard, CLI) + AI providers | 60–120 | 45% | 33–66 | Done: MCP resources (document info, text, page images); headless tool table (123 tools incl. signing, optimizing, initial view, links, stamps, data exchange, comment review, forms authoring and scripts, redaction, sanitize, print, add content), opt-in MCP server over stdio, CLI `run`/`tools`, UI control channel with drag. Missing: Action Wizard, AI providers |
-| M14 | 1.0 polish: performance, localization, installers | 120–250 | 5% | 115–240 | Done: PhotoCraft's translation system (`i18n/`: TSV catalogs, `tl!`, command-id and plural entries, system-language detection, strict catalog tests); every dialog, panel and notice goes through `tl!`; Japanese and Traditional Chinese complete for them (≈1,800 entries each), Simplified Chinese ≈1,600, Czech and Brazilian Portuguese for menus. Missing: more catalogs filled in, Windows language detection, installers, performance budgets |
+| M14 | 1.0 polish: performance, localization, installers | 120–250 | 5% | 115–240 | Done: PhotoCraft's translation system (`i18n/`: TSV catalogs, `tl!`, command-id and plural entries, system-language detection, strict catalog tests); every dialog, panel and notice goes through `tl!`; Japanese, Traditional Chinese and Simplified Chinese catalogs have ≈1,800 entries each; Simplified Chinese coverage is checked against the UI source; Czech and Brazilian Portuguese for menus. Missing: more catalogs filled in, Windows language detection, installers, performance budgets |
 | | **Total (original plan sizing)** | **2,085–3,840** | **≈ 35%** | **≈ 1,350–2,500 at the planned rate; ≈ 600–1,100 at the measured rate** | |
 
 **Overall progress: about 30–35% of the effort (49.5% of features shipped).** The viewer and the core are far ahead of the editing features, because the viewer was built first so progress could be seen; rendering itself is still borrowed from `hayro`. See [Honest assessment](#honest-assessment-2026-10-05).
@@ -127,6 +127,8 @@ M0 → M1 → M2 → M3 → M4 must happen in order. After M4, M5–M12 can run
 
 Newest first. One line per session: the date, what moved, and the new overall percentage.
 
+- **2026-10-08 (M14, Simplified Chinese):** Added 208 translations, bringing the catalog from 1,625 to 1,833 entries. PhotoCraft-style coverage checks protect registered commands, All tools labels and UI `tl!` literals; generated history and diagnostic regressions preserve user values. Chinese font delivery remains incomplete: the release-pinned craft-fonts input has no Hans face and the web build only embeds the Japanese UI face (see #112 and #140). Localization remains partial; overall ≈ 30–35% (unchanged).
+
 - **2026-10-07 (community, #190):** Create PDF from Images offers embedded resolution, 72 DPI, or custom DPI (1–1200) without resampling. The engine and doc_create share the choice; Windows image context menus open the chooser through --create-images. Overall estimate unchanged (about 30–35%).
 
 - **2026-10-08 (community):** Cut and stack in Print > Multiple: single-sided n-up sheets can be cut into cell piles and restacked in selected page order, with aligned gutter marks and blanks kept in their cells. Available through doc_print; duplex is refused. Grid-size overflow returns an error. No change to the parity count or the overall estimate (about 30–35%).

crates/ui-egui/src/i18n/mod.rs

@@ -670,6 +670,90 @@ mod tests {
         }
     }
 
+    /// Like PhotoCraft's complete-catalog gates, derive coverage from the UI, not another language.
+    #[test]
+    fn simplified_chinese_covers_commands_and_catalogue() {
+        let zh = Lang::from_code("zh-hans").expect("zh-hans registered");
+        for command in pdfcraft_engine::commands::COMMANDS {
+            assert!(has(zh, command.label), "missing command: {}", command.label);
+            if let Some(menu) = command.menu {
+                assert!(has(zh, menu), "missing menu: {menu}");
+            }
+        }
+        for group in pdfcraft_engine::catalog::TOOL_GROUPS {
+            assert!(has(zh, group.label), "missing group: {}", group.label);
+            for section in group.sections {
+                assert!(has(zh, section.title), "missing section: {}", section.title);
+                for item in section.items {
+                    assert!(has(zh, item.label), "missing item: {}", item.label);
+                }
+            }
+        }
+    }
+
+    /// New tl!("literal") labels must not silently fall back to English in the complete catalog.
+    #[test]
+    fn simplified_chinese_covers_ui_literals() {
+        let zh = Lang::from_code("zh-hans").expect("zh-hans registered");
+        let mut stack = vec![std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("src")];
+        let mut literals = std::collections::BTreeSet::new();
+        while let Some(dir) = stack.pop() {
+            for entry in std::fs::read_dir(dir).expect("UI source directory") {
+                let path = entry.expect("UI source entry").path();
+                if path.is_dir() {
+                    // Catalog implementation and its test-only lookup examples are not UI labels.
+                    if path.file_name().is_some_and(|name| name != "i18n") {
+                        stack.push(path);
+                    }
+                } else if path.extension().is_some_and(|ext| ext == "rs") {
+                    let source = std::fs::read_to_string(path).expect("UI source file").replace("\r\n", "\n");
+                    let mut rest = source.split("#[cfg(test)]\nmod ").next().unwrap_or_default();
+                    while let Some((_, after)) = rest.split_once("tl!(\"") {
+                        let mut escaped = false;
+                        let end = after
+                            .char_indices()
+                            .find_map(|(i, c)| {
+                                if c == '"' && !escaped {
+                                    return Some(i);
+                                }
+                                escaped = c == '\\' && !escaped;
+                                None
+                            })
+                            .expect("closed tl! literal");
+                        let (raw, tail) = after.split_at(end);
+                        if tail.starts_with("\")") {
+                            // Current UI literals use the shared Rust/JSON string escapes.
+                            let label: String = serde_json::from_str(&format!("\"{raw}\"")).expect("UI literal escapes");
+                            literals.insert(label);
+                        }
+                        rest = tail.strip_prefix('"').expect("closing quote");
+                    }
+                }
+            }
+        }
+        assert!(literals.len() > 900, "source scan found only {} literals", literals.len());
+        let missing: Vec<_> = literals.iter().filter(|label| !has(zh, label)).collect();
+        assert!(missing.is_empty(), "untranslated Simplified Chinese UI literals: {missing:#?}");
+    }
+
+    #[test]
+    fn simplified_chinese_history_and_diagnostics_preserve_user_values() {
+        let zh = Lang::from_code("zh-hans").expect("zh-hans registered");
+        set_current(zh);
+        assert_eq!(command_label("Undo Insert pages from 报告 {n}.pdf"), "撤销 从 报告 {n}.pdf 插入页面");
+        assert_eq!(command_label("Redo Fill in 联系人 {key}"), "重做 填写 联系人 {key}");
+        assert_eq!(action_label("Change Title"), "更改标题");
+        assert_eq!(action_label("Custom action {n}"), "Custom action {n}");
+        assert_eq!(fmt(t("This page couldn't be displayed.\n{e}"), &[("e", "OS error {n}")]), "无法显示此页面。\nOS error {n}");
+        assert_eq!(fmt(t("{n} pages selected"), &[("n", "3")]), "已选择 3 页");
+        assert_eq!(tr(zh, "CheckBox"), "复选框");
+        assert_eq!(tr(zh, "pages"), "页");
+        assert_eq!(trn(zh, 1, "{n} page", "{n} pages"), "1 页");
+        assert_eq!(trn(zh, 0, "{n} field", "{n} fields"), "0 个字段");
+        assert_eq!(trn(zh, 2, "{n} field", "{n} fields"), "2 个字段");
+        set_current(Lang::EN);
+    }
+
     #[test]
     fn traditional_chinese_is_registered() {
         let zh = Lang::from_code("zh-hant").expect("zh-hant registered");

crates/ui-egui/src/i18n/zh-hans.tsv

@@ -1633,3 +1633,215 @@
 	Digitally sign	数字签名
 	Files you open in PdfCraft appear here. Drop a PDF anywhere to open it.	在 PdfCraft 中打开的文件会显示在这里。将 PDF 拖放到任意位置即可打开。
 	PdfCraft works offline. No telemetry, no account, and no cloud processing unless you add a provider.	PdfCraft 可离线工作。无遥测、无账号，除非您自行添加服务商，否则无云端处理。
+
+# Remaining dialogs, generated history labels and diagnostics. Translated from the English meaning.
+	{0}: {1}	{0}：{1}
+	{dpi} pixels/inch	{dpi} 像素/英寸
+	{kind} field	{kind}字段
+	{month} {y}	{y} 年 {month}
+	{n} pages selected	已选择 {n} 页
+	{name} — unsaved changes	{name} — 有未保存的更改
+	{s} action	{s}动作
+	1 page selected	已选择 1 页
+	a bookmark cannot be moved inside itself	无法将书签移入其自身内部
+	a document must keep at least one page	文档必须保留至少一页
+	A form field has additional actions	表单字段包含附加动作
+	A stream refers to an external file	数据流引用了外部文件
+	A stream uses LZW compression	数据流使用 LZW 压缩
+	Add arrow	添加箭头
+	Add background	添加背景
+	Add bookmark	添加书签
+	Add callout	添加标注框
+	Add checkmark	添加勾选标记
+	Add cloud	添加云形
+	Add connected lines	添加折线
+	Add cross	添加叉号
+	Add dot	添加圆点
+	Add drawing	添加绘图
+	Add field	添加字段
+	Add file attachment	添加文件附件
+	Add header & footer	添加页眉和页脚
+	Add highlight	添加高亮
+	Add image	添加图像
+	Add inserted text	添加插入文本标记
+	Add line	添加直线
+	Add link	添加链接
+	Add oval	添加椭圆
+	Add polygon	添加多边形
+	Add rectangle	添加矩形
+	Add redaction mark	添加密文标记
+	Add signature	添加签名
+	Add squiggly underline	添加波浪下划线
+	Add stamp	添加图章
+	Add sticky note	添加便笺
+	Add strikethrough	添加删除线
+	Add text box	添加文本框
+	Add underline	添加下划线
+	An embedded file has no AFRelationship	嵌入文件缺少 AFRelationship
+	An image asks to be interpolated	图像要求进行插值
+	An image has alternates or OPI information	图像包含替代图像或 OPI 信息
+	Button Style:	按钮样式：
+	Change {key}	更改{key}
+	Change comment properties	更改注释属性
+	Change field properties	更改字段属性
+	Change initial view	更改初始视图
+	Change initials	更改姓名首字母
+	Change link properties	更改链接属性
+	Change signature	更改签名
+	Check	勾选
+	Check Box Style:	复选框样式：
+	Choose images	选择图像
+	Circle	圆形
+	Combo	下拉列表
+	Coming in milestone	计划推出的里程碑
+	Crop page	裁剪页面
+	Delete bookmark	删除书签
+	Delete comment	删除注释
+	Delete content	删除内容
+	Delete document JavaScript	删除文档 JavaScript
+	Delete field	删除字段
+	Delete image	删除图像
+	Delete link	删除链接
+	Delete page	删除页面
+	Device colour is used, but there is no PDF/A output intent	使用了设备颜色，但未设置 PDF/A 输出意图
+	DeviceCMYK is used: it needs a CMYK output intent (not added automatically)	使用了 DeviceCMYK：需要设置 CMYK 输出意图（不会自动添加）
+	Diagnostic details	诊断详情
+	Diamond	菱形
+	Double-click	双击
+	Draw your {what} below.	请在下方绘制您的{what}。
+	Duplicate page	复制页面
+	e.g. en-US	例如 en-US
+	Edit comment	编辑注释
+	Edit content	编辑内容
+	Edit document JavaScript	编辑文档 JavaScript
+	Edit script of {name}	编辑 {name} 的脚本
+	Edit text	编辑文本
+	Embedded files must be PDF/A files themselves (use PDF/A-3 for others)	嵌入文件本身必须符合 PDF/A 标准（其他类型的文件请使用 PDF/A-3）
+	Erase	擦除
+	Fill & Sign: change initials	填写与签名：更改姓名首字母
+	Fill & Sign: change signature	填写与签名：更改签名
+	Fill & Sign: remove saved initials	填写与签名：移除已保存的姓名首字母
+	Fill & Sign: remove saved signature	填写与签名：移除已保存的签名
+	Fill in {name}	填写 {name}
+	Flatten	拼合
+	Flip image	翻转图像
+	Font: Helvetica	字体：Helvetica
+	Go to page {p}	转到第 {p} 页
+	Images and text	图像和文本
+	Images and text (converted to PDF)	图像和文本（转换为 PDF）
+	Import {name}	导入 {name}
+	Insert pages from {name}	从 {name} 插入页面
+	Items marked Ready work today.	标记为就绪的项目现已可用。
+	JavaScript	JavaScript
+	JavaScript, e.g. getField("total").value	JavaScript，例如 getField("total").value
+	List	列表
+	Lock comment	锁定注释
+	Mark figure as decorative	将图形标记为装饰性内容
+	Microsoft Word (.docx)	Microsoft Word（.docx）
+	Move bookmark	移动书签
+	Move comment	移动注释
+	Move image	移动图像
+	Move page	移动页面
+	Move pages	移动页面
+	no such document	找不到该文档
+	nothing in the file matches this document	文件中没有与此文档匹配的数据
+	open to see what it will include	打开以查看计划包含的功能
+	Page {p} of {n}	第 {p} 页，共 {n} 页
+	PDF/A…	PDF/A…
+	Planned	计划中
+	Planned for milestone	计划推出的里程碑
+	PostScript / EPS	PostScript / EPS
+	PostScript XObjects aren't allowed	不允许使用 PostScript XObject
+	Presentation (.pptx)	演示文稿（.pptx）
+	PushButton	按钮
+	Radio	单选按钮
+	Remove redaction marks	移除密文标记
+	Rename bookmark	重命名书签
+	Rendering: hayro (bootstrap) · UI: egui · Icons: Lucide (ISC) · Fonts: Inter, JetBrains Mono, Dancing Script (OFL)	渲染：hayro（初期实现） · 界面：egui · 图标：Lucide（ISC） · 字体：Inter、JetBrains Mono、Dancing Script（OFL）
+	Replace page	替换页面
+	Resize comment	调整注释大小
+	Rotate image	旋转图像
+	Rotate page	旋转页面
+	Run JavaScript	运行 JavaScript
+	Save as PDF/A-1b	另存为 PDF/A-1b
+	Save as PDF/A-2b	另存为 PDF/A-2b
+	Save as PDF/A-3b	另存为 PDF/A-3b
+	Save as PDF/UA	另存为 PDF/UA
+	Save as PDF/X	另存为 PDF/X
+	Select a file for the stamp	选择图章文件
+	Select Icon	选择图标
+	Set bookmark destination	设置书签目标
+	Set status Accepted	将状态设为已接受
+	Set status Cancelled	将状态设为已取消
+	Set status Completed	将状态设为已完成
+	Set status None	将状态设为无
+	Set status Rejected	将状态设为已拒绝
+	Set status Unmarked	将状态设为未标记
+	Set tab order	设置 Tab 键顺序
+	Set the image of {name}	设置 {name} 的图像
+	Spreadsheet (.xlsx)	电子表格（.xlsx）
+	Square	正方形
+	Star	星形
+	The document has additional actions (/AA)	文档包含附加动作（/AA）
+	The document has document-level JavaScript	文档包含文档级 JavaScript
+	the document has no form fields	文档没有表单字段
+	the document has no page tree	文档没有页面树
+	the document has no tags	文档没有标签
+	The document has no XMP metadata	文档没有 XMP 元数据
+	The document is encrypted	文档已加密
+	the document is protected by a password	文档受密码保护
+	The form asks viewers to make appearances (NeedAppearances)	表单要求阅读器生成外观（NeedAppearances）
+	the image is empty	图像为空
+	The operation failed.	操作失败。
+	the password is incorrect	密码不正确
+	the text recognition models are not installed (run `cargo xtask models`, or set PRINTCRAFT_MODELS)	尚未安装文本识别模型（请运行 `cargo xtask models` 或设置 PRINTCRAFT_MODELS）
+	The title in the metadata and the document information differ	元数据与文档信息中的标题不一致
+	the title must not be empty	标题不能为空
+	there are no pages to print	没有可打印的页面
+	this document is signed: rewriting it would invalidate its signatures (save it incrementally instead)	此文档已签名：重写文件会使签名失效（请改用增量保存）
+	this file isn't XFDF, FDF, XML or text form data	此文件不是 XFDF、FDF、XML 或文本格式的表单数据
+	This page couldn't be displayed.\n{e}	无法显示此页面。\n{e}
+	Type your {what}.	请输入您的{what}。
+	Unknown	未知
+	Unlock comment	解锁注释
+	Update background	更新背景
+	Update header & footer	更新页眉和页脚
+	Update watermark	更新水印
+	Your name	您的姓名
+
+# Additional UI labels, including newer workspace and security prompts.
+	Change {what}	更改{what}
+	Cut and stack	裁切后堆叠
+	Default workspace mode	默认工作区模式
+	Documents and view	文档与视图
+	Open email app	打开邮件应用
+	Open link	打开链接
+	Open this web page?	是否打开此网页？
+	Scripts run in a sandbox without file or network access. A script that asks to open a web page needs your permission first. With JavaScript off, Acrobat's standard format, validate and calculate functions still work.	脚本在沙盒中运行，无法访问文件或网络。脚本请求打开网页时，需要先获得您的许可。关闭 JavaScript 后，Acrobat 的标准格式、验证和计算函数仍可使用。
+	Sign yourself	自行签名
+	Text recognition isn't installed: its models are missing (run `cargo xtask models`, or set PDFCRAFT_MODELS).	尚未安装文本识别功能：缺少模型（请运行 `cargo xtask models` 或设置 PDFCRAFT_MODELS）。
+	Used when opening PDFs. An explicit launch or control mode takes precedence for the session.	用于打开 PDF 时。如果启动参数或控制通道明确指定了模式，则本次会话优先使用该模式。
+	Write this email?	是否撰写此邮件？
+	{who} in this document wants to open this address in your browser:	此文档中的{who}请求在浏览器中打开以下地址：
+	{who} in this document wants to open your email app with this address:	此文档中的{who}请求打开邮件应用并使用以下地址：
+	CheckBox	复选框
+	Create link	创建链接
+	Duplicate field	复制字段
+	Replace pages	替换页面
+	Set alternate text	设置替代文本
+	nothing to redo	没有可重做的操作
+	nothing to undo	没有可撤销的操作
+	pages	页
+	there are no redaction marks to apply	没有可应用的密文标记
+	Create PDF from images	从图像创建 PDF
+	Selected image files: {count}	已选择的图像文件：{count}
+	Use image resolution	使用图像分辨率
+	Use each image's embedded DPI; use 72 DPI when it is absent.	使用各图像内嵌的 DPI；若未指定，则使用 72 DPI。
+	Use 72 DPI (one point per pixel)	使用 72 DPI（每像素 1 点）
+	Use custom DPI	使用自定义 DPI
+	DPI sets the printed page size without resampling the image.	DPI 用于设置打印页面尺寸，不会对图像重新采样。
+	Create	创建
+	Dynamic XFA form laid out from its template: {pages}, {fields}.	动态 XFA 表单已按模板排版：{pages}，{fields}。
+	XFA form: its fields and its XFA data are kept in step, so other viewers show what you fill in.	XFA 表单：字段与 XFA 数据保持同步，以便其他阅读器显示您填写的内容。
+@plural	{n} page|{n} pages	{n} 页
+@plural	{n} field|{n} fields	{n} 个字段

crates/ui-egui/tests/control.rs

@@ -523,6 +523,34 @@ fn japanese_dialogs_errors_and_custom_action_names() {
     }
 }
 
+#[test]
+fn simplified_chinese_signature_prompts_and_errors_keep_document_state() {
+    let (mut h, c) = harness();
+    let documents = ok(&mut h, &c, "ui.state", json!({}))["documents"].clone();
+    ok(&mut h, &c, "ui.set", json!({"key": "language", "value": "zh-hans"}));
+    ok(&mut h, &c, "ui.set", json!({"key": "dialog", "value": "signature"}));
+    let typed = ok(&mut h, &c, "ui.inspect", json!({"query": "请输入您的签名。"}));
+    assert!(typed["count"].as_u64().unwrap() > 0, "{typed}");
+    // The shell also has a Draw control; the modal's button is registered after the shell.
+    let draw = ok(&mut h, &c, "ui.inspect", json!({"query": "绘制"}));
+    let id = draw["widgets"]
+        .as_array()
+        .unwrap()
+        .iter()
+        .rev()
+        .find(|w| w["label"] == "绘制" && w["clickable"] == true)
+        .expect("signature Draw button")["id"]
+        .clone();
+    ok(&mut h, &c, "ui.click", json!({"id": id}));
+    let drawn = ok(&mut h, &c, "ui.inspect", json!({"query": "请在下方绘制您的签名。"}));
+    assert!(drawn["count"].as_u64().unwrap() > 0, "{drawn}");
+    ok(&mut h, &c, "ui.click", json!({"label": "取消"}));
+    assert!(!h.state_mut().apply_edit(pdfcraft_engine::Edit::DeletePages { pages: vec![0, 1, 2, 3, 4] }));
+    let state = ok(&mut h, &c, "ui.state", json!({}));
+    assert_eq!(state["notice"], "删除页面失败：a document must keep at least one page");
+    assert_eq!(state["documents"], documents, "a language change and failed edit must preserve the document");
+}
+
 #[test]
 fn inspect_and_click_by_label_and_id() {
     let (mut h, c) = harness();

docs/localization.md

@@ -12,10 +12,12 @@ The control channel exposes the setting through `ui.set`:
 
 The value is `auto` or a language code (`en`, `ja`, `zh-hans`, `zh-hant`, `cs`, `pt-br`), in any case. `ui.state` reports `language` as written in the preferences (`auto`, `en`, `ja`, `zh-hans`, `zh-hant`, `cs` or `pt-br`). Unknown values return an error without changing the current setting. Preferences saved before this setting existed follow the system language.
 
-Dialogs, panels, menus, notices and history labels go through the catalog (`tl!`). Japanese and Traditional Chinese translate them (about 1,800 entries each), Simplified Chinese most of them (about 1,600); Czech and Brazilian Portuguese cover the menus so far. Untranslated labels use English. Error details that come from the engine or the operating system are shown as they are, inside a translated frame ("操作「…」に失敗しました: …"). The command palette matches the translated label, the English label and the command id. Vertical Japanese PDF rendering is an existing viewer feature; this change does not add vertical text editing.
+Dialogs, panels, menus, notices and history labels go through the catalog (`tl!`). Japanese, Traditional Chinese and Simplified Chinese translate them (about 1,800 entries each); Czech and Brazilian Portuguese cover the menus so far. Untranslated labels use English. Error details that come from the engine or the operating system are shown as they are, inside a translated frame ("操作「…」に失敗しました: …"). The command palette matches the translated label, the English label and the command id. Vertical Japanese PDF rendering is an existing viewer feature; this change does not add vertical text editing.
 
 Japanese interface text uses BIZ UDPGothic from [craft-fonts](https://github.com/storytold/craft-fonts), an optional build input that every release includes (`CRAFT_FONTS_DIR`; see the README). A build made without it has no Japanese face, so Japanese labels show replacement boxes. Chinese is drawn with the same craft-fonts CJK faces (in Simplified Chinese the `Hans` faces come first, so a line never mixes faces with different baselines), so a character none of them has shows a replacement box (and every Chinese character does in a build without craft-fonts). Czech and Brazilian Portuguese need only the bundled Latin faces (tested in `tests/fonts.rs`).
 
+Simplified Chinese coverage tests, following PhotoCraft's complete-catalog approach, check every registered command, All tools label and `tl!("literal")` in the UI source. Generated history labels and diagnostics are also tested with user-supplied names and error details. Catalog coverage does not guarantee glyph coverage: the release-pinned craft-fonts input currently has no `Hans` face, and the web build embeds only BIZ UDPGothic Regular. Chinese font delivery remains separate work, as discussed in [#112](https://github.com/storytold/pdfcraft/pull/112) and [#140](https://github.com/storytold/pdfcraft/pull/140).
+
 ## How translations work
 
 PdfCraft uses the same system as PhotoCraft (`crates/ui-egui/src/i18n/`):

parity/acrobat-features.toml

@@ -9806,8 +9806,8 @@ milestone = "M14"
 status = "partial"
 commands = ["app.preferences"]
 tools = []
-evidence = ["crates/ui-egui/src/i18n/mod.rs::language_persists_and_invalid_input_keeps_current_language", "crates/ui-egui/src/i18n/mod.rs::bundled_catalogs_are_consistent", "crates/ui-egui/src/i18n/mod.rs::japanese_covers_commands_and_catalogue", "crates/ui-egui/tests/control.rs::language_switch_preserves_document_and_command_ids", "crates/ui-egui/tests/control.rs::japanese_controls_and_search_keep_command_ids", "crates/ui-egui/tests/control.rs::japanese_dialogs_errors_and_custom_action_names"]
-notes = "Preferences switches Auto (system language)/English/Japanese/Simplified Chinese/Traditional Chinese/Czech/Brazilian Portuguese and persists; ui.set language auto|en|ja|zh-hans|zh-hant|cs|pt-br and ui.state expose it. TSV catalogs per language (same system as PhotoCraft); every dialog, panel and notice goes through tl!. Japanese and Traditional Chinese cover commands, dialogs, panels, shortcuts and history labels, Simplified Chinese most of them; Czech and Brazilian Portuguese the menus. Engine/OS error details stay untranslated. Missing: the other catalogs filled in, Windows system-language detection, a full localization audit."
+evidence = ["crates/ui-egui/src/i18n/mod.rs::language_persists_and_invalid_input_keeps_current_language", "crates/ui-egui/src/i18n/mod.rs::bundled_catalogs_are_consistent", "crates/ui-egui/src/i18n/mod.rs::japanese_covers_commands_and_catalogue", "crates/ui-egui/src/i18n/mod.rs::simplified_chinese_covers_commands_and_catalogue", "crates/ui-egui/src/i18n/mod.rs::simplified_chinese_covers_ui_literals", "crates/ui-egui/src/i18n/mod.rs::simplified_chinese_history_and_diagnostics_preserve_user_values", "crates/ui-egui/tests/control.rs::simplified_chinese_signature_prompts_and_errors_keep_document_state", "crates/ui-egui/tests/control.rs::language_switch_preserves_document_and_command_ids", "crates/ui-egui/tests/control.rs::japanese_controls_and_search_keep_command_ids", "crates/ui-egui/tests/control.rs::japanese_dialogs_errors_and_custom_action_names"]
+notes = "Preferences switches Auto (system language)/English/Japanese/Simplified Chinese/Traditional Chinese/Czech/Brazilian Portuguese and persists; ui.set language auto|en|ja|zh-hans|zh-hant|cs|pt-br and ui.state expose it. TSV catalogs per language (same system as PhotoCraft); every dialog, panel and notice goes through tl!. Japanese, Traditional Chinese and Simplified Chinese cover commands, dialogs, panels, shortcuts and history labels; Czech and Brazilian Portuguese the menus. Engine/OS error details stay untranslated. Missing: the other catalogs filled in, Chinese font delivery, Windows system-language detection, a full localization audit."
 
 [[feature]]
 id = "misc.prefs-reading"