diff --git a/README.md b/README.md
index 654c8e866..9692b6360 100644
--- a/README.md
+++ b/README.md
@@ -344,6 +344,9 @@ CRAFT_FONTS_DIR=../craft-fonts cargo run --release -p lightcraft
 Without it LightCraft builds and runs the same, but Chinese and Japanese text have no glyphs. Fonts are never committed to this
 repo; see [craftrules `standards/fonts.md`](https://github.com/storytold/craftrules/blob/main/standards/fonts.md).
 
+**Interface language:** **Edit → Language** (English, 简体中文, 繁體中文（台灣）, 日本語) or **Settings → General →
+Language**; the choice applies immediately and persists. See [docs/localization.md](docs/localization.md).
+
 The web build needs the `wasm32-unknown-unknown` target and the matching `wasm-bindgen` CLI
 (`cargo xtask web` prints the exact install command); see [docs/web.md](docs/web.md).
 
diff --git a/ROADMAP.md b/ROADMAP.md
index 559ad525a..fdfbec0cb 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -29,7 +29,7 @@ duplicate Local entries #22, black GPU exports on an Intel iGPU #78).
 | **Workflow & library** | ~85% (single machine) | Robust catalog (journal + snapshots, background compaction, crash-tested), 85k-photo libraries stay responsive, Local browsing with automatic cleanup, XMP interop, keywords, smart albums, Move import | Opening an 85k library takes 1.7–4.7 s; no cloud sync (out of scope), no tablet companion (#74, roadmap), shared albums, publish services, tethering |
 | **Classic modules** | ~30% | Geotagging from GPX track logs, soft proofing (partial), slideshow (basic) | **Map view, Book, Print, Slideshow module, Web, publish services**: ~40 tracker rows ⬜ |
 | **HDR & video** | 0% | | HDR edit/display/export; video play/trim/edit/export |
-| **Platform & robustness** | ~70% | macOS native; Windows/Linux builds; web via WASM; no-panic lints workspace-wide, `unsafe` confined to `crates/sysmem`; failed saves are reported; GPU errors fall back to CPU | Windows installer UI unverified on Windows (PR #79); GPU path proven only on Apple + user reports; Chinese/Japanese/English UI (see docs/localization.md); remaining technical errors and date formats; accessibility partial; headless UI tests time out under machine load |
+| **Platform & robustness** | ~70% | macOS native; Windows/Linux builds; web via WASM; no-panic lints workspace-wide, `unsafe` confined to `crates/sysmem`; failed saves are reported; GPU errors fall back to CPU | Windows installer UI unverified on Windows (PR #79); GPU path proven only on Apple + user reports; English, Simplified/Traditional Chinese and Japanese UI (see docs/localization.md); remaining technical errors; Traditional Chinese uses the Simplified Chinese font until craft-fonts has a TC face; accessibility partial; headless UI tests time out under machine load |
 
 ### By kind of user
 
@@ -87,7 +87,7 @@ hardening (#78), copyright metadata (#51), GPX geotagging (#60), import tag help
 | M13 | Merge | HDR merge (deghost), panorama (projections, boundary warp, fill edges), HDR panorama | 10–15 | ✅ |
 | M14 | Video | import/playback/trim via FilmCraft crates, global edits + presets on video, video export | 6–10 | ⬜ |
 | M15 | Classic modules | Map, Book, Slideshow, Print, Web; smart collections, stacks, virtual copies, publish services, tethering | 25–40 | 🚧 (smart albums, stacks, virtual copies, compare/survey ✅; Map/Book/Slideshow/Print/Web ⬜) |
-| M16 | 1.0 polish | preferences, shortcut editor, accessibility, localization, packaging (dmg/msi/AppImage/web), hardening | 10–20 | 🚧 (settings, keyboard shortcuts sheet, packaging basics ✅; Chinese/Japanese/English localisation 🟡; accessibility and further locales ⬜) |
+| M16 | 1.0 polish | preferences, shortcut editor, accessibility, localization, packaging (dmg/msi/AppImage/web), hardening | 10–20 | 🚧 (settings, keyboard shortcuts sheet, packaging basics ✅; English/Chinese (Simplified, Traditional)/Japanese localisation 🟡; accessibility and further locales ⬜) |
 
 ## Parity estimate (feature count updated 2026-10-05; effort estimate from 2026-10-02)
 
@@ -194,7 +194,7 @@ own chart-based calibration (M11.4). Adobe matrices are never used.
 
 ## Chinese and Japanese interfaces, and text watermarks
 
-English, Simplified Chinese and Japanese interface languages are persisted in UI state, and the
+English, Simplified Chinese, Traditional Chinese (Taiwan) and Japanese interface languages are persisted in UI state, and the
 language table (`crates/ui-egui/src/i18n.rs`) drives the menus, settings and fonts, so another
 language is a table entry plus two catalogs (docs/localization.md). Core menus and panels are
 translated; untranslated text retains English. CJK glyphs (Chinese: Noto Sans CJK SC; Japanese UI:
diff --git a/apps/lightcraft/src/native_menu.rs b/apps/lightcraft/src/native_menu.rs
index d3c9bdb7e..557c9abfb 100644
--- a/apps/lightcraft/src/native_menu.rs
+++ b/apps/lightcraft/src/native_menu.rs
@@ -419,6 +419,27 @@ impl NativeMenu {
 mod tests {
     use super::*;
 
+    /// The menu model's titles stay English, so only the language can tell the native menu to
+    /// rebuild its titles (and the macOS app menu): every language switch — also between two CJK
+    /// languages — must change the structure key.
+    #[test]
+    fn switching_language_rebuilds_native_menu_structure() {
+        use lightcraft_ui_egui::i18n::{Locale, set_language};
+        let app = LightcraftApp::new(lightcraft_engine::Session::with_demo(), Default::default());
+        set_language(Locale::En);
+        let bar = menu_bar(&app);
+        let mut seen = std::collections::BTreeSet::new();
+        for language in Locale::ALL {
+            set_language(*language);
+            assert!(seen.insert(structure_of(&bar)), "{language:?} shares another language's menu structure key");
+        }
+        set_language(Locale::ZhHant);
+        assert_eq!(label_text("File"), "檔案");
+        assert_eq!(label_text("Settings…"), "設定…");
+        assert_eq!(label_text("Quit LightCraft"), "結束 LightCraft");
+        set_language(Locale::En);
+    }
+
     #[test]
     fn shortcuts_map_to_accelerators() {
         assert_eq!(accelerator("Cmd+Shift+Z"), Some(Accelerator::new(Modifiers::META | Modifiers::SHIFT, Code::KeyZ)));
diff --git a/crates/engine/src/fonts.rs b/crates/engine/src/fonts.rs
index c028ba53e..97a830639 100644
--- a/crates/engine/src/fonts.rs
+++ b/crates/engine/src/fonts.rs
@@ -26,6 +26,13 @@ impl CraftFont {
     pub fn is_mincho(&self) -> bool {
         self.family.contains("Mincho")
     }
+
+    /// Whether the font can stand in for `script`: it is meant for it, or — until craft-fonts has a
+    /// Traditional Chinese face — it is a Simplified Chinese face, which carries the Traditional
+    /// characters too (with mainland glyph forms; still closer than the Japanese faces).
+    pub fn serves(&self, script: &str) -> bool {
+        self.covers(script) || (script == "Hant" && self.covers("Hans"))
+    }
 }
 
 /// The craft-fonts faces for Japanese, in `fonts`' order (empty without craft-fonts).
@@ -55,7 +62,7 @@ pub fn cjk_fallback<'a>(fonts: &'a [CraftFont], script: &str, style: &str) -> Ve
         (
             // The language's own script first. A face dedicated to the script is preferred over a
             // multi-script face (Noto Sans CJK SC claims `Hans,Latn`; a Japanese face claims `Jpan`).
-            !font.covers(script),
+            !font.serves(script),
             font.scripts.len() != 1,
             font.family != "BIZ UDPGothic",
             font.style != style,
@@ -99,6 +106,8 @@ mod tests {
         let first = |script: &str| cjk_fallback(FACES, script, "Regular").first().map(|f| f.family);
         assert_eq!(first("Hans"), Some("Noto Sans CJK SC"));
         assert_eq!(first("Jpan"), Some("BIZ UDPGothic"));
+        // No Traditional Chinese face yet: the Chinese face stands in before the Japanese ones.
+        assert_eq!(first("Hant"), Some("Noto Sans CJK SC"));
         // Every CJK face is still offered to every language.
         assert_eq!(cjk_fallback(FACES, "Hans", "Regular").len(), 3);
         assert_eq!(cjk_fallback(&[], "Hans", "Regular").len(), 0);
diff --git a/crates/ui-egui/locales/ja-formats.json b/crates/ui-egui/locales/ja-formats.json
index 354205c8d..1944d7b6a 100644
--- a/crates/ui-egui/locales/ja-formats.json
+++ b/crates/ui-egui/locales/ja-formats.json
@@ -103,5 +103,20 @@
   "Adding photos… {} of {}": "写真を追加中：{1}枚中{0}枚",
   " ({} in Recently Deleted)": "（うち{}枚は最近削除した写真）",
   "Already in the library: {} photo{} selected in All Photos": "ライブラリに登録済み：すべての写真で{}枚を選択しました{:.0}",
-  "Already in the library, in Recently Deleted: {} photo{} selected · right-click ▸ Restore, or Delete Permanently to import afresh": "ライブラリの「最近削除した写真」にあります：{}枚を選択しました{:.0}・右クリック ▸ 復元、または完全に削除してから読み込み直し"
+  "Already in the library, in Recently Deleted: {} photo{} selected · right-click ▸ Restore, or Delete Permanently to import afresh": "ライブラリの「最近削除した写真」にあります：{}枚を選択しました{:.0}・右クリック ▸ 復元、または完全に削除してから読み込み直し",
+  "Auto ({})": "自動 ({})",
+  "Build 1:1 Previews ({scope})": "1:1プレビューを作成（{scope}）",
+  "Build Smart Previews ({scope})": "スマートプレビューを作成（{scope}）",
+  "Build Standard-Sized Previews ({scope})": "標準プレビューを作成（{scope}）",
+  "Discard Smart Previews ({scope})": "スマートプレビューを破棄（{scope}）",
+  "Label Set: {name}": "ラベルセット：{name}",
+  "Quick Develop: {name}": "クイック現像: {name}",
+  "Reset {name}": "{name}をリセット",
+  "Updated “{name}”": "「{name}」を更新しました",
+  "{month}": "{month}月",
+  "{month} {year}": "{year}年{month}月",
+  "{verb} {n} Photo{}": "{n}枚を{verb}{:.0}",
+  "{weekday}, {day}": "{day}日（{weekday}）",
+  "{weekday}, {day} {month} {year}": "{year}年{month}月{day}日（{weekday}）",
+  "{year}": "{year}年"
 }
diff --git a/crates/ui-egui/locales/ja.json b/crates/ui-egui/locales/ja.json
index 9c09bbb91..f131d0b46 100644
--- a/crates/ui-egui/locales/ja.json
+++ b/crates/ui-egui/locales/ja.json
@@ -1019,5 +1019,13 @@
   "Back Up Library…": "ライブラリをバックアップ…",
   "Restore Library from Backup…": "バックアップからライブラリを復元…",
   "In Recently Deleted": "最近削除した写真内",
-  "Reload from Disk": "ディスクから再読み込み"
+  "Reload from Disk": "ディスクから再読み込み",
+  "Monday": "月曜日",
+  "Tuesday": "火曜日",
+  "Wednesday": "水曜日",
+  "Thursday": "木曜日",
+  "Friday": "金曜日",
+  "Saturday": "土曜日",
+  "Sunday": "日曜日",
+  "Unknown Date": "日付不明"
 }
diff --git a/crates/ui-egui/locales/zh-hans-formats.json b/crates/ui-egui/locales/zh-hans-formats.json
index c30f92ea0..c3713eb18 100644
--- a/crates/ui-egui/locales/zh-hans-formats.json
+++ b/crates/ui-egui/locales/zh-hans-formats.json
@@ -103,5 +103,20 @@
   "Adding photos… {} of {}": "正在添加照片… 第 {0} 张，共 {1} 张",
   " ({} in Recently Deleted)": "（其中 {0} 张在“最近删除”中）",
   "Already in the library: {} photo{} selected in All Photos": "已在图库中：已在“所有照片”中选择 {0} 张照片{1:.0}",
-  "Already in the library, in Recently Deleted: {} photo{} selected · right-click ▸ Restore, or Delete Permanently to import afresh": "已在图库的“最近删除”中：已选择 {0} 张照片{1:.0} · 右键单击 ▸ 恢复，或永久删除后重新导入"
+  "Already in the library, in Recently Deleted: {} photo{} selected · right-click ▸ Restore, or Delete Permanently to import afresh": "已在图库的“最近删除”中：已选择 {0} 张照片{1:.0} · 右键单击 ▸ 恢复，或永久删除后重新导入",
+  "Auto ({})": "自动（{}）",
+  "Build 1:1 Previews ({scope})": "生成 1:1 预览（{scope}）",
+  "Build Smart Previews ({scope})": "生成智能预览（{scope}）",
+  "Build Standard-Sized Previews ({scope})": "生成标准尺寸预览（{scope}）",
+  "Discard Smart Previews ({scope})": "丢弃智能预览（{scope}）",
+  "Label Set: {name}": "标签集：{name}",
+  "Quick Develop: {name}": "快速编辑：{name}",
+  "Reset {name}": "重置{name}",
+  "Updated “{name}”": "已更新“{name}”",
+  "{verb} {n} Photo{}": "{verb} {n} 张照片{:.0}",
+  "{year}": "{year}年",
+  "{month}": "{month}月",
+  "{month} {year}": "{year}年{month}月",
+  "{weekday}, {day}": "{day}日 {weekday}",
+  "{weekday}, {day} {month} {year}": "{year}年{month}月{day}日 {weekday}"
 }
diff --git a/crates/ui-egui/locales/zh-hans.json b/crates/ui-egui/locales/zh-hans.json
index 5cac9dfef..7dc4d7c3b 100644
--- a/crates/ui-egui/locales/zh-hans.json
+++ b/crates/ui-egui/locales/zh-hans.json
@@ -1019,5 +1019,13 @@
   "Back Up Library…": "备份图库…",
   "Restore Library from Backup…": "从备份恢复图库…",
   "In Recently Deleted": "在“最近删除”中",
-  "Reload from Disk": "从磁盘重新读取"
+  "Reload from Disk": "从磁盘重新读取",
+  "Monday": "星期一",
+  "Tuesday": "星期二",
+  "Wednesday": "星期三",
+  "Thursday": "星期四",
+  "Friday": "星期五",
+  "Saturday": "星期六",
+  "Sunday": "星期日",
+  "Unknown Date": "未知日期"
 }
diff --git a/crates/ui-egui/locales/zh-hant-formats.json b/crates/ui-egui/locales/zh-hant-formats.json
new file mode 100644
index 000000000..816936c0f
--- /dev/null
+++ b/crates/ui-egui/locales/zh-hant-formats.json
@@ -0,0 +1,122 @@
+{
+  " · {skipped} skipped (file exists)": " · 已略過 {skipped} 個（檔案已存在）",
+  " · {} duplicate{} skipped": " · 已略過 {} 張重複照片{:.0}",
+  " · {} failed: {}": " · {} 個失敗：{}",
+  " · {} moved": " · 已移動 {} 個",
+  " · {} not readable": " · {} 個無法讀取",
+  ", {failed} file{} not readable": "，{failed} 個檔案無法讀取{:.0}",
+  "Add {local_n} to My Photos": "將 {local_n} 張加入我的照片",
+  "Add {} Photo{}": "新增 {} 張照片{:.0}",
+  "Add “{}” to Favorites": "將「{}」加入喜好項目",
+  "Added {n} photo{} to My Photos": "已將 {n} 張照片加入我的照片{:.0}",
+  "Added {n} photo{} to “{}”": "已將 {n} 張照片加入「{1}」{0:.0}",
+  "Adding photos… {} of {}": "正在新增照片… {}／{}",
+  "All {n} selected photos move by the same amount.": "所有 {n} 張選取的照片會調整相同的時間。",
+  "Auto ({})": "自動（{}）",
+  "Auto Sync: edits apply to {n} photos": "自動同步：編輯會套用至 {n} 張照片",
+  "Automatic ({} MB)": "自動（{} MB）",
+  "Build 1:1 Previews ({scope})": "建立 1:1 預覽（{scope}）",
+  "Build Smart Previews ({scope})": "建立智慧型預覽（{scope}）",
+  "Build Standard-Sized Previews ({scope})": "建立標準尺寸預覽（{scope}）",
+  "Click {}:1": "點擊時 {}:1",
+  "Create {n} Virtual Copies": "建立 {n} 張虛擬副本",
+  "Decoder: {reason}": "解碼器：{reason}",
+  "Delete \"{label}\"": "刪除「{label}」",
+  "Delete \"{label}\" (and the mask)": "刪除「{label}」及遮色片",
+  "Delete {n} Photos": "刪除 {n} 張照片",
+  "Delete “{current}”": "刪除「{current}」",
+  "Discard Smart Previews ({scope})": "捨棄智慧型預覽（{scope}）",
+  "Duplicate \"{label}\"": "複製「{label}」",
+  "Example: {example}": "範例：{example}",
+  "Exported {n} photo{}": "已匯出 {n} 張照片{:.0}",
+  "Exported {ok} of {total} photo{}": "已匯出 {ok}／{total} 張照片{:.0}",
+  "Exported {} point curve preset{}": "已匯出 {} 個點曲線預設集{:.0}",
+  "Exported {} preset{}": "已匯出 {} 個預設集{:.0}",
+  "Exporting {} of {total}": "正在匯出第 {}／{total} 張",
+  "Filter bar — {active} active filter{}": "篩選列 — 已套用 {active} 個篩選條件{:.0}",
+  "Healed {n} dust spot{}": "已修復 {n} 個灰塵斑點{:.0}",
+  "Import cancelled · {} photo{} added": "已取消匯入 · 已加入 {} 張照片{:.0}",
+  "Imported {n} point curve preset{}": "已匯入 {n} 個點曲線預設集{:.0}",
+  "Imported {n} preset{}": "已匯入 {n} 個預設集{:.0}",
+  "Imported {n} preset{}, {f} file{} not readable": "已匯入 {n} 個預設集{:.0}，{f} 個檔案無法讀取{:.0}",
+  "Imported {} photo{}": "已匯入 {} 張照片{:.0}",
+  "Label Set: {name}": "標籤集：{name}",
+  "Matches: {}": "符合條件：{}",
+  "Merging… {stage} {:.0}%": "正在合併… {stage} {:.0}%",
+  "Move {what} to Recently Deleted?": "要將{what}移至「最近刪除」嗎？",
+  "Named ({named_n})": "已命名（{named_n}）",
+  "Paste into {n} photo{} — only settings that were copied are pasted": "貼上至 {n} 張照片{:.0} — 只貼上已複製的設定",
+  "Preset: {name}": "預設集：{name}",
+  "Preview only — editing the camera's embedded JPEG ({})": "僅供預覽 — 正在編輯相機內嵌的 JPEG（{}）",
+  "Preview only — {}": "僅供預覽 — {}",
+  "Profile: {}": "描述檔：{}",
+  "Proof Copy ({})": "校樣副本（{}）",
+  "Proof Preview · {}": "校樣預覽 · {}",
+  "Quick Develop · {n} photos": "快速顯像 · {n} 張照片",
+  "Quick Develop: {name}": "快速顯像：{name}",
+  "Rated {}": "評分：{}",
+  "Reading photos… {done} of {total}": "正在讀取照片… {done}／{total}",
+  "Reading photos… {} of {}": "正在讀取照片… {}／{}",
+  "Redo {}": "重做 {}",
+  "Remove “{}” from Favorites": "將「{}」從喜好項目移除",
+  "Rename {n} Photos…": "重新命名 {n} 張照片…",
+  "Rename “{name}”": "重新命名「{name}」",
+  "Rendering on the CPU: {why}": "使用 CPU 算繪：{why}",
+  "Reset {name}": "重設{name}",
+  "Reset {} Channel": "重設 {} 通道",
+  "Saved export preset “{}”": "已儲存匯出預設集「{}」",
+  "Show {hidden} hidden location{}": "顯示 {hidden} 個隱藏的位置{:.0}",
+  "Showing {n} of {}": "顯示 {n}／{} 張",
+  "Smart album: {}": "智慧型相簿：{}",
+  "Undo {}": "復原 {}",
+  "Updated “{name}”": "已更新「{name}」",
+  "Version {} — a clean-room, pure-Rust photo library and raw developer.": "版本 {} — 以純 Rust 獨立實作的照片管理與 RAW 顯像程式。",
+  "Version: {}": "版本：{}",
+  "none (CPU rendering): {why}": "無（使用 CPU 算繪）：{why}",
+  "the {n} selected photos": "選取的 {n} 張照片",
+  "the {} photos in view": "目前顯示的 {} 張照片",
+  "these {count} photos": "這 {count} 張照片",
+  "{count} smart preview{} · {:.1} MB": "{count} 張智慧型預覽{:.0} · {:.1} MB",
+  "{f} folders (and their subfolders)": "{f} 個資料夾（及其子資料夾）",
+  "{label} Grading": "{label}色彩分級",
+  "{label} {d:+} on every selected photo": "每張選取照片的{label}調整 {d:+}",
+  "{label}, {n} photos": "{label}，{n} 張照片",
+  "{matching} of {t} photos": "{matching}／{t} 張照片",
+  "{matching} photos": "{matching} 張照片",
+  "{mode} spot {} of {}": "{mode}斑點：第 {}／{} 個",
+  "{month}": "{month}月",
+  "{month} {year}": "{year}年{month}月",
+  "{msg} ({failed} failed)": "{msg}（{failed} 個失敗）",
+  "{name} Label": "{name}標籤",
+  "{name} Off": "關閉{name}",
+  "{name} On": "開啟{name}",
+  "{name} — double-click to reset it": "{name} — 按兩下可重設",
+  "{n} change{} saved in memory but not written to disk: {e}\nLightCraft retries automatically; quitting now would lose {}.": "{n} 項變更{:.0}已保留在記憶體，但尚未寫入磁碟：{e}\nLightCraft 會自動重試；現在結束程式會遺失{}。",
+  "{n} found · {sel} selected": "找到 {n} 張 · 已選取 {sel} 張",
+  "{n} photos": "{n} 張照片",
+  "{n} photos in {} are hidden by the filters above": "{}中的 {n} 張照片被上方篩選條件隱藏",
+  "{n} photo{}": "{n} 張照片{:.0}",
+  "{n} photo{} match · updates automatically as photos change": "{n} 張照片符合{:.0} · 隨照片變更自動更新",
+  "{n} photo{} now · updates automatically as photos change": "目前 {n} 張照片{:.0} · 隨照片變更自動更新",
+  "{sel_n} selected · {counted}": "已選取 {sel_n} 張 · {counted}",
+  "{stage}… {:.0}%": "{stage}… {:.0}%",
+  "{verb} {n} Photo{}": "{verb} {n} 張照片{:.0}",
+  "{weekday}, {day}": "{day}日 {weekday}",
+  "{weekday}, {day} {month} {year}": "{year}年{month}月{day}日 {weekday}",
+  "{what} merge added": "已新增{what}合併照片",
+  "{what} merge failed: {e}": "{what}合併失敗：{e}",
+  "{year}": "{year}年",
+  "{} and higher": "{} 以上",
+  "{} files": "{} 個檔案",
+  "{} files and {f} folder{}": "{} 個檔案與 {f} 個資料夾{:.0}",
+  "{} of 4 guides — drag along lines that should be vertical or horizontal.": "已繪製 {}／4 條參考線 — 沿應為垂直或水平的線條拖曳。",
+  "{} photos": "{} 張照片",
+  "{} photo{} not readable": "{} 張照片無法讀取{:.0}",
+  "{} spot(s) on this photo": "此照片有 {} 個斑點",
+  "· {dups} already in the library": "· {dups} 張已在照片庫中",
+  "· {n} photo{}": "· {n} 張照片{:.0}",
+  "… and {more} more": "…以及另外 {more} 個",
+  " ({} in Recently Deleted)": "（其中 {} 張在「最近刪除」中）",
+  "Already in the library: {} photo{} selected in All Photos": "已在照片庫中：已在「所有照片」中選取 {} 張照片{:.0}",
+  "Already in the library, in Recently Deleted: {} photo{} selected · right-click ▸ Restore, or Delete Permanently to import afresh": "已在照片庫的「最近刪除」中：已選取 {} 張照片{:.0} · 按右鍵 ▸ 還原，或永久刪除後重新匯入"
+}
diff --git a/crates/ui-egui/locales/zh-hant.json b/crates/ui-egui/locales/zh-hant.json
new file mode 100644
index 000000000..79c952917
--- /dev/null
+++ b/crates/ui-egui/locales/zh-hant.json
@@ -0,0 +1,1248 @@
+{
+  "+ Group": "＋ 群組",
+  "+ Rule": "＋ 規則",
+  "0: nothing is rejected.": "0：不排除任何照片。",
+  "A filter is hiding this view's photos: change it, or clear it (View → Clear Filters)": "篩選條件隱藏了此檢視的照片：請變更條件，或選擇「檢視 → 清除篩選條件」",
+  "About LightCraft": "關於 LightCraft",
+  "Activity": "處理狀態",
+  "Actual size": "實際大小",
+  "Add": "新增",
+  "Add Catchlight": "新增眼神光",
+  "Add Folder to Local": "將資料夾加入本機",
+  "Add Point Color Sample": "新增點色彩樣本",
+  "Add Red Eye Correction": "新增紅眼校正",
+  "Add Remove Spot": "新增移除斑點",
+  "Add Selected Photos": "新增選取的照片",
+  "Add a rule (⌥-click: a group)": "新增規則（⌥ 點擊：新增群組）",
+  "Add in place": "原地加入",
+  "Add in place: the library references the files where they are; nothing is copied or moved.": "原地加入：照片庫參照檔案目前的位置，不會複製或移動檔案。",
+  "Add keyword": "新增關鍵字",
+  "Add number": "加上編號",
+  "Add to": "加入至",
+  "Add to Album": "加入相簿",
+  "Add to Favorites": "加入喜好項目",
+  "Add to My Photos": "加入我的照片",
+  "Add to Selected Photos": "加入選取的照片",
+  "Add to Target Album": "加入目標相簿",
+  "Add/Subtract/Intersect Mask": "新增／減去／交集遮色片",
+  "Added to photos you import that don't already have it.": "只會加入至匯入時尚未具有這些資訊的照片。",
+  "Adding": "正在新增",
+  "Advanced search…": "進階搜尋…",
+  "After": "編輯後",
+  "After 30 days": "30 天後",
+  "After 7 days": "7 天後",
+  "After 90 days": "90 天後",
+  "After a year": "一年後",
+  "Album": "相簿",
+  "Albums": "相簿",
+  "All": "全部",
+  "All Metadata": "所有中繼資料",
+  "All Metadata…": "所有中繼資料…",
+  "All Photos": "所有照片",
+  "All rights reserved": "保留所有權利",
+  "All types": "所有類型",
+  "Alt Text": "替代文字",
+  "Always": "一律",
+  "Amount": "強度",
+  "Aperture": "光圈",
+  "Application": "應用程式",
+  "Apply Color Label Set": "套用色彩標籤集",
+  "Apply Filter Preset": "套用篩選預設集",
+  "Apply Metadata Preset": "套用中繼資料預設集",
+  "Apply Point Curve Preset": "套用點曲線預設集",
+  "Apply Preset": "套用預設集",
+  "Apply Settings JSON": "套用 JSON 設定",
+  "Approved": "已核准",
+  "Aqua": "青色",
+  "Aqua Hue": "青色色相",
+  "Aqua Luminance": "青色明度",
+  "Aqua Saturation": "青色飽和度",
+  "ArtCraft Website": "ArtCraft 網站",
+  "ArtCraft — more creative apps": "ArtCraft — 更多創作應用程式",
+  "As Shot": "拍攝時設定",
+  "As shot": "拍攝時設定",
+  "Ascending": "遞增",
+  "Aspect": "長寬比",
+  "Aspect Ratio": "長寬比",
+  "Assisted Culling": "輔助挑片",
+  "Assisted Culling…": "輔助挑片…",
+  "Auto": "自動",
+  "Auto Advance": "自動前進",
+  "Auto Advance Off": "關閉自動前進",
+  "Auto Advance On": "開啟自動前進",
+  "Auto Advance after rating or flagging": "評分或標記後自動前進",
+  "Auto Advance: move to the next photo after rating or flagging": "自動前進：評分或標記後移至下一張照片",
+  "Auto Align": "自動對齊",
+  "Auto B&W Mix": "自動黑白混色",
+  "Auto Crop": "自動裁切",
+  "Auto Import": "自動匯入",
+  "Auto Import Now": "立即自動匯入",
+  "Auto Import Settings": "自動匯入設定",
+  "Auto Mask": "自動遮色片",
+  "Auto Settings": "自動設定",
+  "Auto Straighten": "自動拉直",
+  "Auto Sync": "自動同步",
+  "Auto-Stack by Capture Time": "依拍攝時間自動堆疊",
+  "Auto-Stack by Capture Time…": "依拍攝時間自動堆疊…",
+  "Auto-Tag Photos from Tracklog": "依軌跡記錄自動標記照片位置",
+  "Auto-Tag from Tracklog": "依軌跡記錄自動加入位置標記",
+  "Auto-Tag from Tracklog…": "依軌跡記錄自動加入位置標記…",
+  "Automatic": "自動",
+  "Automatically Write Changes into XMP": "自動將變更寫入 XMP",
+  "Automatically write changes into XMP sidecars": "自動將變更寫入 XMP 附屬檔案",
+  "Autumn Gold": "秋日金色",
+  "B&W": "黑白",
+  "B&W Mix": "黑白混色",
+  "B&W Mixer": "黑白混色器",
+  "Back": "返回",
+  "Back Up Library…": "備份照片庫…",
+  "Back to Edit": "返回編輯",
+  "Back to Edit (E)": "返回編輯（E）",
+  "Back to Grid": "返回格狀檢視",
+  "Background": "背景",
+  "Balance": "平衡",
+  "Basic": "基本",
+  "Before": "編輯前",
+  "Before/After (Y)": "編輯前／後（Y）",
+  "Before/After Settings": "編輯前／後設定",
+  "Before/After Split": "編輯前／後分割檢視",
+  "Before/After Split Top/Bottom": "編輯前／後上下分割檢視",
+  "Before/After Top/Bottom": "編輯前／後上下檢視",
+  "Begin Interaction": "開始互動",
+  "Bit depth": "位元深度",
+  "Black & White": "黑白",
+  "Blacks": "黑色色階",
+  "Bleach Bypass": "漂白略過",
+  "Bleached": "漂白效果",
+  "Blending": "混合",
+  "Blue": "藍色",
+  "Blue Hour Boost": "藍調時刻增強",
+  "Blue Hue": "藍色色相",
+  "Blue Luminance": "藍色明度",
+  "Blue Primary": "藍色原色",
+  "Blue Saturation": "藍色飽和度",
+  "Blue channel": "藍色通道",
+  "Blue/Yellow Fringe": "藍／黃色邊緣",
+  "Blurry photos below the score are flagged as rejects.": "焦點分數低於門檻的模糊照片會標記為排除。",
+  "Boundary Warp": "邊界變形",
+  "Bright & Airy": "明亮輕盈",
+  "Bring All to Front": "將所有視窗移至最前方",
+  "Browse Folder": "瀏覽資料夾",
+  "Browse Folder…": "瀏覽資料夾…",
+  "Browse Profiles": "瀏覽描述檔",
+  "Browse…": "瀏覽…",
+  "Brush": "筆刷",
+  "Brush Settings": "筆刷設定",
+  "Brush Stroke": "筆刷筆觸",
+  "Build Previews": "建立預覽",
+  "Build Smart Previews": "建立智慧型預覽",
+  "By Date": "依日期",
+  "By day (YYYY/YYYY-MM-DD)": "依日期（YYYY/YYYY-MM-DD）",
+  "By month (YYYY/YYYY-MM)": "依月份（YYYY/YYYY-MM）",
+  "Calibration": "校正",
+  "Camera": "相機",
+  "Cameras and Cards": "相機與記憶卡",
+  "Cancel": "取消",
+  "Cancel Interaction": "取消互動",
+  "Cancel Preview Build": "取消建立預覽",
+  "Candidate": "候選照片",
+  "Caption": "圖說",
+  "Capture Date": "拍攝日期",
+  "Captured": "拍攝時間",
+  "Catalog Statistics": "目錄統計",
+  "Check All": "全部勾選",
+  "Check Output Path": "檢驗輸出路徑",
+  "Choose Another Library…": "選擇其他照片庫…",
+  "Choose Edit Settings to Copy": "選擇要複製的編輯設定",
+  "Choose Edit Settings to Copy…": "選擇要複製的編輯設定…",
+  "Choose Folder…": "選擇資料夾…",
+  "Choose a photo in the grid or filmstrip": "請在格狀檢視或底片顯示窗格中選擇照片",
+  "Choose…": "選擇…",
+  "Cinematic": "電影風格",
+  "City": "城市",
+  "Clarity": "清晰度",
+  "Clean Studio": "純淨棚拍",
+  "Clear": "清除",
+  "Clear Cache": "清除快取",
+  "Clear Filters": "清除篩選條件",
+  "Clear Guides": "清除參考線",
+  "Clear History": "清除歷史紀錄",
+  "Clear Preview Cache": "清除預覽快取",
+  "Clear Quick Collection": "清除快速集合",
+  "Clear Reference": "清除參考照片",
+  "Clear all": "全部清除",
+  "Clear form": "清除表單",
+  "Cleared History": "已清除歷史紀錄",
+  "Click Zoom Ratio": "點擊縮放比例",
+  "Click a tag to insert it. Examples are for IMG_0042.CR3 taken 14 Jan 2026, 05:58:48.": "點擊標籤即可插入。範例使用 2026 年 1 月 14 日 05:58:48 拍攝的 IMG_0042.CR3。",
+  "Click photos in the grid to toggle the keyword; Esc stops": "點擊格狀檢視中的照片以加入或移除關鍵字；按 Esc 結束",
+  "Click the photo to pick a colour · ⇧-click adds more": "點擊照片以選取色彩；⇧ 點擊可新增更多色彩",
+  "Click the photo to pick a colour; ⇧-click adds more (up to 5)": "點擊照片以選取色彩；⇧ 點擊可新增更多色彩（最多 5 個）",
+  "Clone": "仿製",
+  "Close": "關閉",
+  "Close Panel": "關閉面板",
+  "Close Window": "關閉視窗",
+  "Close all": "全部關閉",
+  "Close file": "關閉檔案",
+  "Cloudy": "陰天",
+  "Collapse All Stacks": "收合所有堆疊",
+  "Color": "色彩",
+  "Color Grading": "色彩分級",
+  "Color Label Names": "色彩標籤名稱",
+  "Color Label Sets": "色彩標籤集",
+  "Color Mixer": "混色器",
+  "Color Noise Reduction": "色彩雜訊抑制",
+  "Color Priority": "色彩優先",
+  "Color Range": "色彩範圍",
+  "Color space": "色彩空間",
+  "Color space: sRGB (AVIF)": "色彩空間：sRGB（AVIF）",
+  "Combine files…": "合併檔案…",
+  "Command Journal": "指令記錄",
+  "Comments panel": "註解面板",
+  "Compare": "比較",
+  "Compare (Shift+C)": "比較（Shift+C）",
+  "Compare Before and After": "比較編輯前與編輯後",
+  "Compare needs at least two photos": "比較需要至少兩張照片",
+  "Component options": "元件選項",
+  "Compression": "壓縮",
+  "Concrete Cool": "冷調混凝土",
+  "Confirm before deleting": "刪除前確認",
+  "Confirm before moving photos to Recently Deleted": "將照片移至「最近刪除」前確認",
+  "Constrain Crop": "限制裁切範圍",
+  "Continue Without Saving": "繼續使用但不儲存",
+  "Contrast": "對比",
+  "Convert to DNG": "轉換為 DNG",
+  "Cool Fade": "冷調褪色",
+  "Cool Morning": "清冷晨光",
+  "Copy": "複製",
+  "Copy After's Settings to Before": "將編輯後設定複製至編輯前",
+  "Copy Before's Settings to After": "將編輯前設定複製至編輯後",
+  "Copy Edit Settings": "複製編輯設定",
+  "Copy History Step Settings to Before": "將歷史步驟設定複製至編輯前",
+  "Copy Metadata": "複製中繼資料",
+  "Copy as DNG": "複製為 DNG",
+  "Copy into the library (else use the files where they are)": "複製至照片庫（否則使用原位置的檔案）",
+  "Copy pages": "複製頁面",
+  "Copy the files (into the library's Originals/, or a folder you choose)": "複製檔案（至照片庫的 Originals/ 或指定資料夾）",
+  "Copy to": "複製至",
+  "Copy to Clipboard": "複製到剪貼簿",
+  "Copy: the files are copied to the folder below and the library uses the copies; the originals are left as they are.": "複製：檔案會複製至下方資料夾，照片庫使用複本，原始檔案維持原狀。",
+  "Copyright": "著作權",
+  "Copyright Info URL": "著作權資訊網址",
+  "Copyright Status": "著作權狀態",
+  "Country": "國家",
+  "Create Album": "建立相簿",
+  "Create Album…": "建立相簿…",
+  "Create Folder": "建立資料夾",
+  "Create Folder…": "建立資料夾…",
+  "Create New Mask": "建立新遮色片",
+  "Create PDF from clipboard": "從剪貼簿建立 PDF",
+  "Create PDF from file…": "從檔案建立 PDF…",
+  "Create PDF from images…": "從圖片建立 PDF…",
+  "Create Preset": "建立預設集",
+  "Create Preset…": "建立預設集…",
+  "Create Proof Copy": "建立校樣副本",
+  "Create Smart Album": "建立智慧型相簿",
+  "Create Smart Album from Filter…": "依篩選條件建立智慧型相簿…",
+  "Create Smart Album…": "建立智慧型相簿…",
+  "Create Stack": "建立堆疊",
+  "Create Version": "建立版本",
+  "Create Version from Step": "依此步驟建立版本",
+  "Create Virtual Copy": "建立虛擬副本",
+  "Creator": "創作者",
+  "Crisp Landscape": "清晰風景",
+  "Crisp Vista": "清晰遠景",
+  "Crop": "裁切",
+  "Crop & Rotate": "裁切與旋轉",
+  "Crop & Rotate (C)": "裁切與旋轉（C）",
+  "Crop Aspect": "裁切長寬比",
+  "Cross Process": "交叉沖洗",
+  "Culling": "挑片",
+  "Curve": "曲線",
+  "Custom": "自訂",
+  "Custom…": "自訂…",
+  "Cut": "剪下",
+  "Cut pages": "剪下頁面",
+  "Cycle Crop Overlay": "切換裁切疊加",
+  "Cycle Crop Overlay Orientation": "切換裁切疊加方向",
+  "Cycle Info Overlay": "切換資訊疊加",
+  "Cycle Mask Overlay Color": "切換遮色片疊加色彩",
+  "Cycle Mask Overlay Mode": "切換遮色片疊加模式",
+  "Cylindrical": "圓柱形",
+  "Dark & Moody": "暗調氛圍",
+  "Darken": "變暗",
+  "Darks": "暗部",
+  "Date Groups": "日期群組",
+  "Day": "日",
+  "Daylight": "日光",
+  "Decrease Brush Feather": "減少筆刷羽化",
+  "Decrease Brush Size": "縮小筆刷尺寸",
+  "Deep Sky": "深邃天空",
+  "Defringe": "去除邊緣色差",
+  "Deghost Amount": "去除鬼影強度",
+  "Dehaze": "去朦朧",
+  "Delete": "刪除",
+  "Delete (⌫)": "刪除（⌫）",
+  "Delete Album": "刪除相簿",
+  "Delete All Masks": "刪除所有遮色片",
+  "Delete Color Label Set": "刪除色彩標籤集",
+  "Delete Export Preset": "刪除匯出預設集",
+  "Delete Filter Preset": "刪除篩選預設集",
+  "Delete Imported Profile": "刪除匯入的描述檔",
+  "Delete Keyword": "刪除關鍵字",
+  "Delete Keyword Set": "刪除關鍵字集",
+  "Delete Mask": "刪除遮色片",
+  "Delete Metadata Preset": "刪除中繼資料預設集",
+  "Delete Permanently": "永久刪除",
+  "Delete Photo": "刪除照片",
+  "Delete Photos": "刪除照片",
+  "Delete Point Color Sample": "刪除點色彩樣本",
+  "Delete Point Curve Preset": "刪除點曲線預設集",
+  "Delete Preset": "刪除預設集",
+  "Delete Red Eye Correction": "刪除紅眼校正",
+  "Delete Spot": "刪除斑點",
+  "Delete Version": "刪除版本",
+  "Delete all": "全部刪除",
+  "Delete all spots": "刪除所有斑點",
+  "Delete mask": "刪除遮色片",
+  "Delete them": "刪除這些照片",
+  "Density": "濃度",
+  "Depth Range": "深度範圍",
+  "Descending": "遞減",
+  "Deselect": "取消選取",
+  "Deselect All": "取消全選",
+  "Desert Heat": "沙漠熱浪",
+  "Desert Warmth": "沙漠暖色",
+  "Detail": "詳細檢視",
+  "Detail (D)": "詳細檢視（D）",
+  "Diagonal": "對角線",
+  "Discard Preview Cache": "捨棄預覽快取",
+  "Display P3": "Display P3",
+  "Display theme": "顯示主題",
+  "Distortion": "變形",
+  "Document properties…": "文件內容…",
+  "Don't enlarge": "不放大",
+  "Done": "完成",
+  "Drag along the horizon; double-click for Auto": "沿水平線拖曳；按兩下可自動校正",
+  "Drag over an eye on the photo; the pupil inside is found automatically.": "在照片的眼睛上拖曳，會自動尋找範圍內的瞳孔。",
+  "Draw Guides": "繪製參考線",
+  "Duplicate": "複製",
+  "Duplicate Mask": "複製遮色片",
+  "Duplicate and Invert Mask": "複製並反轉遮色片",
+  "Each / starts a folder level; tags are filled in per photo (a level with missing metadata is \"unknown\").": "每個 / 代表一層資料夾；標籤會依照片填入（缺少中繼資料的層級使用「unknown」）。",
+  "Edit": "編輯",
+  "Edit (E)": "編輯（E）",
+  "Edit Capture Time": "編輯拍攝時間",
+  "Edit Capture Time…": "編輯拍攝時間…",
+  "Edit Color Label Names": "編輯色彩標籤名稱",
+  "Edit Color Label Names…": "編輯色彩標籤名稱…",
+  "Edit Copy for External Editor": "編輯外部編輯器副本",
+  "Edit Info": "編輯資訊",
+  "Edit Label Names…": "編輯標籤名稱…",
+  "Edit Mask Component": "編輯遮色片元件",
+  "Edit Sections": "編輯區段",
+  "Edit Smart Album": "編輯智慧型相簿",
+  "Edit Smart Album…": "編輯智慧型相簿…",
+  "Edit Spot": "編輯斑點",
+  "Edit in External Editor": "在外部編輯器中編輯",
+  "Edited": "已編輯",
+  "Effect": "效果",
+  "Effects": "效果",
+  "Enable Lens Corrections": "啟用鏡頭校正",
+  "End Interaction": "結束互動",
+  "English": "English",
+  "Enter Full Screen": "進入全螢幕",
+  "Erase": "擦除",
+  "Every EXIF, GPS and XMP field in the file": "檔案中的所有 EXIF、GPS 與 XMP 欄位",
+  "Existing previews": "現有預覽",
+  "Exit": "結束",
+  "Expand All Stacks": "展開所有堆疊",
+  "Expand/Collapse Stack": "展開／收合堆疊",
+  "Export": "匯出",
+  "Export Album with Preset": "使用預設集匯出相簿",
+  "Export Album…": "匯出相簿…",
+  "Export As…": "匯出為…",
+  "Export Group…": "匯出群組…",
+  "Export Now": "立即匯出",
+  "Export Point Curve Presets": "匯出點曲線預設集",
+  "Export Point Curve Presets…": "匯出點曲線預設集…",
+  "Export Presets": "匯出預設集",
+  "Export Presets…": "匯出預設集…",
+  "Export User Presets…": "匯出使用者預設集…",
+  "Export with Preset": "使用預設集匯出",
+  "Export with Previous": "使用上次設定匯出",
+  "Exporting": "正在匯出",
+  "Export…": "匯出…",
+  "Exposure": "曝光",
+  "Exposure (shutter · aperture · ISO)": "曝光（快門 · 光圈 · ISO）",
+  "Extended Description": "延伸說明",
+  "External Editor": "外部編輯器",
+  "Faded Matte": "褪色霧面",
+  "Faded Slide": "褪色正片",
+  "Faded Urban": "褪色城市",
+  "Favorite Preset": "將預設集加入喜好項目",
+  "Favorite Profile": "將描述檔加入喜好項目",
+  "Favorites": "喜好項目",
+  "Feather": "羽化",
+  "File": "檔案",
+  "File & date": "檔案與日期",
+  "File Name": "檔案名稱",
+  "File Path": "檔案路徑",
+  "File Size": "檔案大小",
+  "File name": "檔案名稱",
+  "Fill Edges": "填補邊緣",
+  "Film": "底片",
+  "Filmstrip": "底片顯示窗格",
+  "Filmstrip (/)": "底片列（/）",
+  "Filter": "篩選",
+  "Filter Bar": "篩選列",
+  "Filter Presets": "篩選預設集",
+  "Filter bar": "篩選列",
+  "Filter fields": "篩選欄位",
+  "Find Dust Spots": "尋找灰塵斑點",
+  "Find Missing Photos": "尋找遺失的照片",
+  "Find Missing Photos…": "尋找遺失的照片…",
+  "Find Similar Photos": "尋找相似照片",
+  "Find tools and commands…": "尋找工具與指令…",
+  "Find…": "尋找…",
+  "Fit": "符合視窗",
+  "Fit (F)": "符合視窗（F）",
+  "Fit on Screen": "符合螢幕",
+  "Fit to width": "符合寬度",
+  "Fit visible": "符合可見範圍",
+  "Flag": "旗標",
+  "Flag as Pick": "標記為精選",
+  "Flag as Reject": "標記為排除",
+  "Flash": "閃光燈",
+  "Flip H": "水平翻轉",
+  "Flip Horizontal": "水平翻轉",
+  "Flip Overlay (⇧O)": "翻轉疊加（⇧O）",
+  "Flip V": "垂直翻轉",
+  "Flip Vertical": "垂直翻轉",
+  "Flow": "流量",
+  "Fluorescent": "螢光燈",
+  "Focal length": "焦距",
+  "Folder": "資料夾",
+  "Folder name (renamed on disk; its photos follow)": "資料夾名稱（會在磁碟上重新命名，照片也會隨之移動）",
+  "Folders": "資料夾",
+  "Folders and {date} use the capture time; a photo without one uses today's date.": "資料夾與 {date} 使用拍攝時間；沒有拍攝時間的照片使用今天的日期。",
+  "Food": "美食",
+  "Forget Unchanged Local Photos": "忘記未變更的本機照片",
+  "Forget unchanged photos": "忘記未變更的照片",
+  "Form fields panel": "表單欄位面板",
+  "Format": "格式",
+  "Forward": "前進",
+  "Free": "自由",
+  "Fresh & Bright": "清新明亮",
+  "Friday": "星期五",
+  "Full": "完整",
+  "Full Screen Preview": "全螢幕預覽",
+  "Full screen mode": "全螢幕模式",
+  "Full size": "完整尺寸",
+  "GPS Track Log": "GPS 軌跡記錄",
+  "GPU Rendering": "GPU 算繪",
+  "General": "一般",
+  "Geometry": "幾何",
+  "Get Develop Settings": "取得顯像設定",
+  "Global Hue": "整體色相",
+  "Global Luminance": "整體明度",
+  "Global Saturation": "整體飽和度",
+  "Glossy": "亮面",
+  "Go to History Step": "前往歷史步驟",
+  "Golden": "黃金比例",
+  "Golden Glow": "金色光暈",
+  "Golden Hour": "黃金時刻",
+  "Grain": "顆粒",
+  "Graphic": "圖像",
+  "Green": "綠色",
+  "Green Amount": "綠色強度",
+  "Green Hue": "綠色色相",
+  "Green Hue High": "綠色色相上限",
+  "Green Hue Low": "綠色色相下限",
+  "Green Luminance": "綠色明度",
+  "Green Primary": "綠色原色",
+  "Green Saturation": "綠色飽和度",
+  "Green channel": "綠色通道",
+  "Grid": "格狀檢視",
+  "Grid Info": "格狀檢視資訊",
+  "Gritty Street": "粗礪街頭",
+  "Group": "群組",
+  "Group by Date: Automatic": "依日期分組：自動",
+  "Group by Day": "依日分組",
+  "Group by Month": "依月分組",
+  "Group by Year": "依年分組",
+  "Group by date": "依日期分組",
+  "Group into Stack": "分組為堆疊",
+  "Guided": "引導式",
+  "Guided Upright": "引導式透視校正",
+  "Guided Upright Guides": "引導式透視校正參考線",
+  "HDR Merge": "HDR 合併",
+  "HDR Panorama Merge": "HDR 全景合併",
+  "HDR Panorama with Last Settings": "使用上次設定合併 HDR 全景",
+  "HDR Panorama…": "HDR 全景…",
+  "HDR with Last Settings": "使用上次設定合併 HDR",
+  "HDR…": "HDR…",
+  "Heal": "修復",
+  "Heal the small, soft dark spots sensor dust leaves on smooth areas": "修復感光元件灰塵在平滑區域留下的小型柔邊暗點",
+  "Height": "高度",
+  "Height (px)": "高度（像素）",
+  "Help": "說明",
+  "Hide LightCraft": "隱藏 LightCraft",
+  "Hide Mask": "隱藏遮色片",
+  "Hide Others": "隱藏其他應用程式",
+  "Hides this shortcut only; the folder and its photos stay as they are": "只隱藏此捷徑，資料夾及照片維持原狀",
+  "High": "高",
+  "High Contrast B&W": "高對比黑白",
+  "Highlight": "亮部",
+  "Highlights": "亮部",
+  "Highlights Hue": "亮部色相",
+  "Highlights Luminance": "亮部明度",
+  "Highlights Saturation": "亮部飽和度",
+  "Highlights split": "亮部分界",
+  "Histogram": "色階分佈圖",
+  "History": "歷史紀錄",
+  "History & Activity (Y)": "歷史紀錄與處理狀態（Y）",
+  "Horizontal": "水平",
+  "Horizontal text": "水平文字",
+  "Hue": "色相",
+  "Hue Range": "色相範圍",
+  "If file exists": "檔案已存在時",
+  "Image": "圖片",
+  "Import": "匯入",
+  "Import Date": "匯入日期",
+  "Import Photos": "匯入照片",
+  "Import Photos…": "匯入照片…",
+  "Import Point Curve Presets": "匯入點曲線預設集",
+  "Import Point Curve Presets…": "匯入點曲線預設集…",
+  "Import Presets": "匯入預設集",
+  "Import Presets…": "匯入預設集…",
+  "Import Profiles": "匯入描述檔",
+  "Import Profiles & Presets…": "匯入描述檔與預設集…",
+  "Import from Device": "從裝置匯入",
+  "Import from Folder…": "從資料夾匯入…",
+  "Import photos with File → Import Photos… (Cmd+Shift+I), or drop them here": "使用「檔案 → 匯入照片…」（Cmd+Shift+I），或將照片拖放至此",
+  "Imported Photos": "已匯入的照片",
+  "Importing": "正在匯入",
+  "Importing scans the source for photos; it doesn't add the folder to Local (use Local → Browse Folder… to work in a folder without importing).": "匯入會掃描來源中的照片，不會將資料夾加入本機（若要直接使用資料夾中的檔案，請選擇「本機 → 瀏覽資料夾…」）。",
+  "In library": "在照片庫中",
+  "In memory — nothing is saved": "僅存於記憶體，尚未儲存",
+  "In use": "使用中",
+  "In-memory session: these settings last until LightCraft quits.": "記憶體工作階段：這些設定只保留至 LightCraft 結束。",
+  "Include subfolders": "包含子資料夾",
+  "Increase Brush Feather": "增加筆刷羽化",
+  "Increase Brush Size": "放大筆刷尺寸",
+  "Info": "資訊",
+  "Info (I)": "資訊（I）",
+  "Info overlay": "資訊疊加",
+  "Inspect Photo": "檢驗照片",
+  "Instant ’70s": "七〇年代拍立得",
+  "Interface": "介面",
+  "Interface language": "介面語言",
+  "Intersect": "交集",
+  "Intersect with": "與下列項目取交集",
+  "Into one folder": "放入同一資料夾",
+  "Invert": "反轉",
+  "Invert Mask": "反轉遮色片",
+  "JPEG (Large)": "JPEG（大尺寸）",
+  "JPEG (Small)": "JPEG（小尺寸）",
+  "Join the ArtCraft Discord": "加入 ArtCraft Discord",
+  "Join the ArtCraft Discord…": "加入 ArtCraft Discord…",
+  "Keep in Local": "保留在本機",
+  "Keep it on a drive with room: smart previews are about 1 MB per photo. The thumbnail cache stays in the library.": "請放在空間充足的磁碟：每張智慧型預覽約 1 MB。縮圖快取仍保留在照片庫中。",
+  "Keyboard Shortcuts": "鍵盤快速鍵",
+  "Keyboard shortcuts": "鍵盤快速鍵",
+  "Keyword": "關鍵字",
+  "Keyword Painter": "關鍵字筆刷",
+  "Keyword Set": "關鍵字集",
+  "Keyword Sets": "關鍵字集",
+  "Keyword Suggestions": "關鍵字建議",
+  "Keyword to paint": "要塗上的關鍵字",
+  "Keywords": "關鍵字",
+  "Keywords (K)": "關鍵字（K）",
+  "Keywords you add appear here; ⌥1–⌥9 apply them.": "新增的關鍵字會顯示於此；⌥1–⌥9 可套用。",
+  "Landscape": "風景",
+  "Language": "語言",
+  "Largest long edge the Detail view renders at; larger is sharper on big displays but slower.": "詳細檢視預覽的最長邊尺寸；較大的尺寸在大螢幕上更清晰，但速度較慢。",
+  "Last": "最後",
+  "Last view": "上次檢視",
+  "Lateral Chromatic Aberration": "橫向色差",
+  "Layer": "圖層",
+  "Layers": "圖層",
+  "Leave them": "保留這些照片",
+  "Lens": "鏡頭",
+  "Lens Corrections": "鏡頭校正",
+  "Level": "水平校正",
+  "Library": "照片庫",
+  "Library Info": "照片庫資訊",
+  "Library Originals": "照片庫原始檔案",
+  "Library Preferences": "照片庫偏好設定",
+  "Library State": "照片庫狀態",
+  "Light": "光線",
+  "LightCraft Default": "LightCraft 預設值",
+  "LightCraft Help": "LightCraft 輔助說明",
+  "LightCraft Preset": "LightCraft 預設集",
+  "LightCraft Presets": "LightCraft 預設集",
+  "LightCraft Website": "LightCraft 網站",
+  "LightCraft couldn't find where to keep your library.": "LightCraft 找不到儲存照片庫的位置。",
+  "LightCraft couldn't open the library at": "LightCraft 無法開啟此位置的照片庫：",
+  "LightCraft on GitHub": "GitHub 上的 LightCraft",
+  "LightCraft website": "LightCraft 網站",
+  "LightCraft — Second Window": "LightCraft — 第二視窗",
+  "Lights": "亮調",
+  "Limit file size (KB, 0 = off)": "檔案大小上限（KB，0 = 不限制）",
+  "Linear Gradient": "線性漸層",
+  "List Albums": "列出相簿",
+  "List Develop Controls": "列出顯像控制項",
+  "List History": "列出歷史紀錄",
+  "List Presets": "列出預設集",
+  "List Profiles": "列出描述檔",
+  "List this folder in Local from now on": "將此資料夾永久列在本機",
+  "Local": "本機",
+  "Local folders": "本機資料夾",
+  "Local library — no cloud account needed": "本機照片庫，無需雲端帳號",
+  "Locate Missing File…": "尋找遺失的檔案…",
+  "Locate Photo": "尋找照片",
+  "Location": "位置",
+  "Long Edge": "長邊",
+  "Looking for photos…": "正在尋找照片…",
+  "Lossless": "無損",
+  "Low": "低",
+  "Luminance": "明度",
+  "Luminance Range": "明度範圍",
+  "Lush Greens": "濃郁綠意",
+  "Magenta": "洋紅色",
+  "Magenta Hue": "洋紅色色相",
+  "Magenta Luminance": "洋紅色明度",
+  "Magenta Saturation": "洋紅色飽和度",
+  "Make Candidate the Select": "將候選照片設為選定照片",
+  "Manual": "手動",
+  "Marquee zoom": "選取範圍縮放",
+  "Masking": "遮色片",
+  "Masking (M)": "遮色片（M）",
+  "Masks": "遮色片",
+  "Match": "符合",
+  "Match Total Exposures": "符合總曝光量",
+  "Matte": "霧面",
+  "Matte Soft": "柔和霧面",
+  "Med": "中",
+  "Medium Contrast": "中等對比",
+  "Megapixels": "百萬像素",
+  "Memory Budget": "記憶體預算",
+  "Memory Usage": "記憶體使用量",
+  "Memory for caches": "快取記憶體",
+  "Menu": "選單",
+  "Merge": "合併",
+  "Merge Keywords": "合併關鍵字",
+  "Merge into…": "合併至…",
+  "Merging…": "正在合併…",
+  "Metadata": "中繼資料",
+  "Metadata Preset": "中繼資料預設集",
+  "Metadata Presets": "中繼資料預設集",
+  "Metadata preset": "中繼資料預設集",
+  "Midpoint": "中點",
+  "Midtones": "中間調",
+  "Midtones Hue": "中間調色相",
+  "Midtones Luminance": "中間調明度",
+  "Midtones Saturation": "中間調飽和度",
+  "Midtones split": "中間調分界",
+  "Minimize": "最小化",
+  "Missing Photos": "遺失的照片",
+  "Misty Morning": "薄霧清晨",
+  "Mode": "模式",
+  "Modified Date": "修改日期",
+  "Monday": "星期一",
+  "Mono Red Filter": "黑白紅色濾鏡",
+  "Mono Rich": "濃郁黑白",
+  "Mono Soft": "柔和黑白",
+  "Monochrome": "單色",
+  "Month": "月",
+  "Moody": "氛圍風格",
+  "Moody Portrait": "氛圍人像",
+  "More": "更多",
+  "More preset options": "更多預設集選項",
+  "Move": "移動",
+  "Move Album": "移動相簿",
+  "Move Down in Stack": "在堆疊中下移",
+  "Move Folder": "移動資料夾",
+  "Move Folder To…": "將資料夾移至…",
+  "Move Mask": "移動遮色片",
+  "Move Preset to Group": "將預設集移至群組",
+  "Move Up in Stack": "在堆疊中上移",
+  "Move the files (into the library's Originals/, or a folder you choose), removing them from the source": "移動檔案（至照片庫的 Originals/ 或指定資料夾），並從來源移除",
+  "Move them": "移動這些照片",
+  "Move to": "移至",
+  "Move to Group": "移至群組",
+  "Move: the files are moved to the folder below; each original (and its XMP sidecar) is removed from the source only after its copy is verified. Duplicates and files that fail stay where they are.": "移動：檔案會移至下方資料夾；每份原始檔案及 XMP 附屬檔案只會在複本通過驗證後才從來源移除。重複及失敗的檔案會留在原處。",
+  "Muted": "低彩度",
+  "Muted Film": "低彩度底片",
+  "My Photos": "我的照片",
+  "My Photos Panel": "我的照片面板",
+  "Name": "名稱",
+  "Named": "已命名",
+  "Names appear in the label menu, the filter bar and the Info panel, and are written to XMP. Empty = the colour's name.": "名稱會顯示於標籤選單、篩選列與資訊面板，並寫入 XMP。留空則使用色彩名稱。",
+  "Navigator": "導覽器",
+  "Needs Work": "需要調整",
+  "Neon Dusk": "霓虹暮色",
+  "Neon Night": "霓虹之夜",
+  "Neutral": "中性",
+  "Never": "永不",
+  "New": "新增",
+  "New Album": "新增相簿",
+  "New Album…": "新增相簿…",
+  "New Folder…": "新增資料夾…",
+  "New Group…": "新增群組…",
+  "New Smart Album": "新增智慧型相簿",
+  "New Smart Album from Filter…": "依篩選條件新增智慧型相簿…",
+  "New Smart Album…": "新增智慧型相簿…",
+  "New album": "新增相簿",
+  "New album…": "新增相簿…",
+  "New blank PDF": "新增空白 PDF",
+  "New name": "新名稱",
+  "New…": "新增…",
+  "Next Photo": "下一張照片",
+  "Night Blue": "夜色藍調",
+  "No": "否",
+  "No Camera or Card Found": "找不到相機或記憶卡",
+  "No Date Groups": "沒有日期群組",
+  "No Stars": "無星等",
+  "No Tool": "無工具",
+  "No automatic versions.": "沒有自動版本。",
+  "No camera": "無相機",
+  "No date": "無日期",
+  "No dust spots found": "找不到灰塵斑點",
+  "No edits yet.": "尚未編輯。",
+  "No exposure information": "沒有曝光資訊",
+  "No filter presets yet": "尚無篩選預設集",
+  "No lens data embedded in this file (DNG lens opcodes only).": "此檔案未內嵌鏡頭資料（僅支援 DNG 鏡頭操作碼）。",
+  "No masks yet. Choose a mask type above.": "尚無遮色片。請在上方選擇遮色片類型。",
+  "No matching photos": "沒有符合的照片",
+  "No metadata found": "找不到中繼資料",
+  "No new presets": "沒有新預設集",
+  "No photo selected": "尚未選取照片",
+  "No photos": "沒有照片",
+  "No photos found": "找不到照片",
+  "No photos in this folder": "此資料夾沒有照片",
+  "No photos match the active filters": "沒有照片符合目前的篩選條件",
+  "No photos match the filters (View → Clear Filters)": "沒有照片符合篩選條件（檢視 → 清除篩選條件）",
+  "No raw photos yet: cameras appear here once their photos are in the library.": "尚無 RAW 照片：將照片加入照片庫後，相機會顯示於此。",
+  "No reference photo": "沒有參考照片",
+  "No usable GPU found: rendering on the CPU": "找不到可用的 GPU：使用 CPU 算繪",
+  "No versions yet. Create one to keep this look.": "尚無版本。建立版本即可保留目前的效果。",
+  "Noise": "雜訊",
+  "Noise Reduction": "雜訊抑制",
+  "Non-raw photos": "非 RAW 照片",
+  "None": "無",
+  "Nothing to compare": "沒有可比較的照片",
+  "Nothing to survey": "沒有可總覽的照片",
+  "Nudge Develop Value": "微調顯像數值",
+  "OK": "確定",
+  "Object": "物件",
+  "Off": "關閉",
+  "Offset X": "X 位移",
+  "Offset Y": "Y 位移",
+  "Opacity": "不透明度",
+  "Opacity (%)": "不透明度（%）",
+  "Open Library": "開啟照片庫",
+  "Open Library…": "開啟照片庫…",
+  "Open in": "開啟於",
+  "Open in Detail": "在詳細檢視中開啟",
+  "Open the place in OpenStreetMap": "在 OpenStreetMap 中開啟此位置",
+  "Open…": "開啟…",
+  "Optics": "光學",
+  "Optimize Library": "最佳化照片庫",
+  "Optional name": "名稱（選填）",
+  "Options": "選項",
+  "Orange": "橙色",
+  "Orange Hue": "橙色色相",
+  "Orange Luminance": "橙色明度",
+  "Orange Saturation": "橙色飽和度",
+  "Orientation": "方向",
+  "Original": "原始",
+  "Original + Settings": "原始檔與設定",
+  "Original files": "原始檔案",
+  "Original offline · editing the smart preview": "原始檔案離線，正在編輯智慧型預覽",
+  "Original offline · no smart preview": "原始檔案離線，無智慧型預覽",
+  "Originals": "原始檔案",
+  "Other images (JPEG, PNG, TIFF, HEIC…)": "其他影像（JPEG、PNG、TIFF、HEIC…）",
+  "Overlay": "疊加",
+  "Overwrite": "覆寫",
+  "Pages": "頁面",
+  "Paint": "繪製",
+  "Paint only areas like the one under the brush": "只塗繪與筆刷下方相似的區域",
+  "Paint over a distraction on the photo to remove it.": "在照片中不需要的物件上塗繪以將其移除。",
+  "Paint overlay": "塗繪疊加",
+  "Panorama Merge": "全景合併",
+  "Panorama with Last Settings": "使用上次設定合併全景",
+  "Panorama…": "全景…",
+  "Parametric curve": "參數曲線",
+  "Paste": "貼上",
+  "Paste Edit Settings": "貼上編輯設定",
+  "Paste Metadata": "貼上中繼資料",
+  "Paste Selected Settings": "貼上選取的設定",
+  "Paste Selected Settings…": "貼上選取的設定…",
+  "Paste Settings from Previous": "貼上前一張照片的設定",
+  "Paste pages": "貼上頁面",
+  "Pastel Haze": "粉彩薄霧",
+  "Percent": "百分比",
+  "Percentage": "百分比",
+  "Performance": "效能",
+  "Perspective": "透視",
+  "Pet Eye": "寵物眼睛",
+  "Pet Eye Catchlight": "寵物眼神光",
+  "Photo": "照片",
+  "Photo Grid": "照片格狀檢視",
+  "Photo Grid (G)": "照片格狀檢視（G）",
+  "Photo Merge": "照片合併",
+  "Photo ▸ Edit in External Editor (⇧⌘E) renders a 16-bit TIFF copy, stacks it with the original and opens it here (an app name on macOS, a program path elsewhere).": "「照片 → 在外部編輯器中編輯」（⇧⌘E）會算繪 16 位元 TIFF 副本，與原始照片堆疊後在此開啟（macOS 填應用程式名稱，其他平台填程式路徑）。",
+  "Photos": "照片",
+  "Photos seen in Local but never added or changed leave the catalog when their folder hasn't been browsed for this long (checked when the library opens). Files stay on disk; browsing the folder shows them again.": "曾在本機瀏覽、但未加入或變更的照片，在其資料夾超過此期間未瀏覽時會移出目錄（開啟照片庫時檢驗）。檔案仍保留在磁碟上，再次瀏覽資料夾即可重新顯示。",
+  "Photos that arrive in this folder (tethering, a scanner, a sync app) are added as soon as they're complete.": "此資料夾中新出現的照片（連線拍攝、掃描器或同步程式）會在檔案完整後立即加入。",
+  "Pick": "精選",
+  "Pick a colour on the photo with the eyedropper.": "使用滴管在照片上選取色彩。",
+  "Pick the sharpest photo of each burst": "選取每組連拍中最清晰的照片",
+  "Picked": "已標記精選",
+  "Picks": "精選照片",
+  "Pixels": "像素",
+  "Point Color": "點色彩",
+  "Point Curve": "點曲線",
+  "Point Curve Presets": "點曲線預設集",
+  "Point curve": "點曲線",
+  "Portrait": "人像",
+  "Position": "位置",
+  "Preferences": "偏好設定",
+  "Preferences…": "偏好設定…",
+  "Preset": "預設集",
+  "Preset name": "預設集名稱",
+  "Presets": "預設集",
+  "Presets & Profiles": "預設集與描述檔",
+  "Presets (Shift+P)": "預設集（Shift+P）",
+  "Presets ▾": "預設集",
+  "Preview": "預覽",
+  "Preview Build Progress": "預覽建立進度",
+  "Preview only": "僅供預覽",
+  "Preview size": "預覽尺寸",
+  "Previews": "預覽",
+  "Previous Photo": "上一張照片",
+  "Print": "列印",
+  "Print…": "列印…",
+  "Profile": "描述檔",
+  "Profile Browser": "描述檔瀏覽器",
+  "Profile Distortion": "描述檔變形校正",
+  "Profile Menu": "描述檔選單",
+  "Profile Vignetting": "描述檔暗角校正",
+  "Profile:": "描述檔：",
+  "Profiles": "描述檔",
+  "Projection": "投影",
+  "Properties": "屬性",
+  "Public domain": "公眾領域",
+  "Pupil Size": "瞳孔尺寸",
+  "Purple": "紫色",
+  "Purple Amount": "紫色強度",
+  "Purple Hue": "紫色色相",
+  "Purple Hue High": "紫色色相上限",
+  "Purple Hue Low": "紫色色相下限",
+  "Purple Luminance": "紫色明度",
+  "Purple Saturation": "紫色飽和度",
+  "Put the locations you removed from Local back (no files change)": "恢復從本機移除的位置（不變更任何檔案）",
+  "Quality": "品質",
+  "Query Photos": "搜尋照片",
+  "Quick Collection": "快速集合",
+  "Quick Develop": "快速顯像",
+  "Quiet Green": "靜謐綠色",
+  "Quit": "結束",
+  "Quit LightCraft": "結束 LightCraft",
+  "Radial Gradient": "放射狀漸層",
+  "Radius": "半徑",
+  "Range": "範圍",
+  "Rating": "評分",
+  "Ratings & flags": "評分與旗標",
+  "Raw default": "RAW 預設值",
+  "Raw defaults": "RAW 預設值",
+  "Raw files": "RAW 檔案",
+  "Raw photos": "RAW 照片",
+  "Raw photos as DNG, with the edits embedded. Size, color and output options don't apply.": "將 RAW 照片轉為 DNG，並內嵌編輯設定。尺寸、色彩與輸出選項不適用。",
+  "Read Metadata from File": "從檔案讀取中繼資料",
+  "Read mode": "閱讀模式",
+  "Reading": "正在讀取",
+  "Reading folder…": "正在讀取資料夾…",
+  "Recently Added": "最近加入",
+  "Recently Deleted": "最近刪除",
+  "Red": "紅色",
+  "Red Eye": "紅眼",
+  "Red Hue": "紅色色相",
+  "Red Luminance": "紅色明度",
+  "Red Primary": "紅色原色",
+  "Red Saturation": "紅色飽和度",
+  "Red channel": "紅色通道",
+  "Red/Cyan Fringe": "紅／青色邊緣",
+  "Redo": "重做",
+  "Reference": "參考",
+  "Reference View": "參考檢視",
+  "Reference the files where they are": "參照檔案目前的位置",
+  "Refine Mask Edges": "調整遮色片邊緣",
+  "Refresh Source": "重新整理來源",
+  "Refresh Source (/)": "重新整理來源（/）",
+  "Reject": "排除",
+  "Reject below focus": "排除低於此焦點分數的照片",
+  "Rejected": "已排除",
+  "Rejects": "排除的照片",
+  "Reload from Disk": "從磁碟重新載入",
+  "Remove": "移除",
+  "Remove (H)": "移除（H）",
+  "Remove CA": "移除色差",
+  "Remove Chromatic Aberration": "移除色差",
+  "Remove from Album": "從相簿移除",
+  "Remove from Favorites": "從喜好項目移除",
+  "Remove from Local": "從本機移除",
+  "Remove from Photo": "從照片移除",
+  "Remove from Selected Photos": "從選取的照片移除",
+  "Remove from Stack": "從堆疊移除",
+  "Remove from survey": "從總覽移除",
+  "Remove location info": "移除位置資訊",
+  "Remove this filter": "移除此篩選條件",
+  "Remove this group": "移除此群組",
+  "Remove this rule": "移除此規則",
+  "Rename": "重新命名",
+  "Rename Album": "重新命名相簿",
+  "Rename Folder": "重新命名資料夾",
+  "Rename Folder…": "重新命名資料夾…",
+  "Rename Keyword": "重新命名關鍵字",
+  "Rename Keyword…": "重新命名關鍵字…",
+  "Rename Mask": "重新命名遮色片",
+  "Rename Photos": "重新命名照片",
+  "Rename Photos…": "重新命名照片…",
+  "Rename Preset": "重新命名預設集",
+  "Rename Preview": "重新命名預覽",
+  "Rename Template Tags": "重新命名範本標籤",
+  "Rename Version": "重新命名版本",
+  "Rename…": "重新命名…",
+  "Rendering": "算繪",
+  "Rendering…": "正在算繪…",
+  "Reset": "重設",
+  "Reset All Curves": "重設所有曲線",
+  "Reset Before to Import State": "將編輯前重設為匯入時狀態",
+  "Reset Control": "重設控制項",
+  "Reset Crop": "重設裁切",
+  "Reset Edits": "重設編輯",
+  "Reset Parametric Curve": "重設參數曲線",
+  "Reset Section": "重設區段",
+  "Reset Tone Curve": "重設色調曲線",
+  "Reset all curves: point curves (all channels) and parametric (double-click a channel to reset only that one)": "重設所有點曲線通道與參數曲線（按兩下通道可只重設該通道）",
+  "Reset all edits (Cmd+Shift+R)": "重設所有編輯（Cmd+Shift+R）",
+  "Resize to": "調整尺寸為",
+  "Resolution (ppi)": "解析度（ppi）",
+  "Restore": "還原",
+  "Restore Library from Backup…": "從備份還原照片庫…",
+  "Restore Version": "還原版本",
+  "Retouch": "修飾",
+  "Revert": "回復至上次儲存",
+  "Review Import": "檢視匯入",
+  "Right-click a photo ▸ Set as Reference Photo, then View → Reference View (Shift+R)": "在照片上按右鍵 → 設為參考照片，再選擇「檢視 → 參考檢視」（Shift+R）",
+  "Right-click a preset to delete it": "在預設集上按右鍵即可刪除",
+  "Rights Usage Terms": "使用權利條款",
+  "Rotate": "旋轉",
+  "Rotate Crop Aspect": "旋轉裁切長寬比",
+  "Rotate Left": "向左旋轉",
+  "Rotate Right": "向右旋轉",
+  "Roughness": "粗糙度",
+  "Roundness": "圓度",
+  "Same as raw default": "與 RAW 預設值相同",
+  "Sample Mask Color": "取樣遮色片色彩",
+  "Sample a colour on the photo": "在照片上取樣色彩",
+  "Saturation": "飽和度",
+  "Saturation Range": "飽和度範圍",
+  "Saturday": "星期六",
+  "Save": "儲存",
+  "Save As…": "另存新檔…",
+  "Save Color Label Set": "儲存色彩標籤集",
+  "Save Current Filter as Preset…": "將目前篩選條件儲存為預設集…",
+  "Save Current Keywords as Set…": "將目前關鍵字儲存為關鍵字集…",
+  "Save Export Preset": "儲存匯出預設集",
+  "Save Filter Preset": "儲存篩選預設集",
+  "Save Keyword Set": "儲存關鍵字集",
+  "Save Metadata Preset": "儲存中繼資料預設集",
+  "Save Metadata Preset…": "儲存中繼資料預設集…",
+  "Save Metadata to File": "將中繼資料儲存至檔案",
+  "Save Point Curve Preset": "儲存點曲線預設集",
+  "Save Point Curve…": "儲存點曲線…",
+  "Save as Preset": "儲存為預設集",
+  "Save as Smart Album…": "儲存為智慧型相簿…",
+  "Save as set": "儲存為關鍵字集",
+  "Save as…": "另存新檔…",
+  "Save preset": "儲存預設集",
+  "Scale": "縮放",
+  "Scanning": "正在掃描",
+  "Scores stay on the photos: filter or make smart albums with Focus and Best of Similar Shots.": "分數會保留在照片上：可依焦點與相似照片中的最佳照片篩選，或建立智慧型相簿。",
+  "Screen": "螢幕",
+  "Search Photos": "搜尋照片",
+  "Search…": "搜尋…",
+  "Seasons": "四季",
+  "Second Window": "第二視窗",
+  "Select": "選定照片",
+  "Select All": "全選",
+  "Select Luminance Range": "選取明度範圍",
+  "Select Mask": "選取遮色片",
+  "Select Photos": "選取照片",
+  "Select Spot": "選取斑點",
+  "Select a photo to edit": "選取要編輯的照片",
+  "Select by": "選取依據",
+  "Select by Flag, Rating or Label": "依旗標、評分或標籤選取",
+  "Select photos, then choose View → Survey (N)": "選取照片後，選擇「檢視 → 總覽」（N）",
+  "Select two photos, then choose View → Compare (Shift+C)": "選取兩張照片後，選擇「檢視 → 比較」（Shift+C）",
+  "Selected": "已選取",
+  "Selenium Tone": "硒調色",
+  "Send Feedback…": "傳送意見回饋…",
+  "Sepia Tone": "深褐色調",
+  "Services": "服務",
+  "Set Before": "設定編輯前",
+  "Set Color Label": "設定色彩標籤",
+  "Set Crop": "設定裁切",
+  "Set Develop Values": "設定顯像參數",
+  "Set Flag": "設定旗標",
+  "Set Mask Adjustments": "設定遮色片調整",
+  "Set Point Curve": "設定點曲線",
+  "Set Profile": "設定描述檔",
+  "Set Rating": "設定評分",
+  "Set as Album Cover": "設為相簿封面",
+  "Set as Before": "設為編輯前",
+  "Set as Reference Photo": "設為參考照片",
+  "Set as Target Album": "設為目標相簿",
+  "Set as Target Album (B adds to it)": "設為目標相簿（按 B 加入）",
+  "Set as Top of Stack": "設為堆疊頂端",
+  "Set the mix from the photo's colours": "依照片色彩設定混色",
+  "Settings": "設定",
+  "Settings new raw photos start from. Changing them doesn't touch photos already in the library.": "新 RAW 照片使用的初始設定。變更不會影響照片庫中已有的照片。",
+  "Settings to include": "要包含的設定",
+  "Settings…": "設定…",
+  "Shade": "陰影處",
+  "Shadow": "陰影",
+  "Shadows": "陰影",
+  "Shadows Hue": "陰影色相",
+  "Shadows Luminance": "陰影明度",
+  "Shadows Saturation": "陰影飽和度",
+  "Shadows Tint": "陰影色調",
+  "Shadows split": "陰影分界",
+  "Sharpen": "銳利化",
+  "Sharpening": "銳利化",
+  "Sharpness": "銳利度",
+  "Short Edge": "短邊",
+  "Show All": "全部顯示",
+  "Show Clipping": "顯示溢色",
+  "Show Deghost Overlay": "顯示去除鬼影疊加",
+  "Show Hidden Local Locations": "顯示隱藏的本機位置",
+  "Show Luminance Map": "顯示明度圖",
+  "Show Mask": "顯示遮色片",
+  "Show Mask Overlay": "顯示遮色片疊加",
+  "Show Mask Pins": "顯示遮色片控制點",
+  "Show Original": "顯示原始照片",
+  "Show Photo Counts": "顯示照片數量",
+  "Show Photos with Keyword": "顯示含此關鍵字的照片",
+  "Show Pins": "顯示控制點",
+  "Show Source": "顯示來源",
+  "Show Thumbnails": "顯示縮圖",
+  "Show destination gamut warning": "顯示目標色域警告",
+  "Show display gamut warning": "顯示螢幕色域警告",
+  "Show file names": "顯示檔案名稱",
+  "Show in Finder": "在 Finder 中顯示",
+  "Show on Map": "在地圖上顯示",
+  "Show overlay (O)": "顯示疊加（O）",
+  "Show ratings, flags and edit badges": "顯示評分、旗標與編輯標記",
+  "Show the Navigator while zoomed in": "放大時顯示導覽器",
+  "Show the template tags; click one to insert it": "顯示範本標籤；點擊即可插入",
+  "Show/Hide Mask": "顯示／隱藏遮色片",
+  "Show/hide My Photos panel": "顯示／隱藏我的照片面板",
+  "Shutter speed": "快門速度",
+  "Side panels": "側邊面板",
+  "Sidecar names": "附屬檔案名稱",
+  "Size": "尺寸",
+  "Size (% of short edge)": "尺寸（短邊百分比）",
+  "Size limit": "大小上限",
+  "Skip": "略過",
+  "Sky": "天空",
+  "Slideshow": "幻燈片播放",
+  "Smart Album": "智慧型相簿",
+  "Smart Album Rule Fields": "智慧型相簿規則欄位",
+  "Smart Preview Status": "智慧型預覽狀態",
+  "Smart Previews Location": "智慧型預覽位置",
+  "Smart previews": "智慧型預覽",
+  "Smoothness": "平滑度",
+  "Soft B&W": "柔和黑白",
+  "Soft Pastel": "柔和粉彩",
+  "Soft Proofing": "軟式校樣",
+  "Soft Skin": "柔和膚質",
+  "Sort": "排序",
+  "Sort by": "排序依據",
+  "Source": "來源",
+  "Source code on GitHub": "GitHub 上的原始碼",
+  "Spherical": "球面",
+  "Spiral": "螺旋",
+  "Split Stack": "分割堆疊",
+  "Spring Fresh": "清新春日",
+  "Square Grid": "方格檢視",
+  "Square Grid (G toggles)": "方格檢視（按 G 切換）",
+  "Square Grid: show file names and formats": "方格檢視：顯示檔案名稱與格式",
+  "Stack": "堆疊",
+  "Stack photos taken within this time of each other:": "將拍攝時間間隔在此範圍內的照片堆疊：",
+  "Stacks": "堆疊",
+  "Standard": "標準",
+  "Start at": "起始值",
+  "Start number": "起始編號",
+  "Startup": "啟動",
+  "State / Province": "州／省",
+  "Stop": "停止",
+  "Stop Building Previews": "停止建立預覽",
+  "Stop Using as Target Album": "停止用作目標相簿",
+  "Stopping…": "正在停止…",
+  "Straighten": "拉直",
+  "Straighten Tool": "拉直工具",
+  "Strong Contrast": "強烈對比",
+  "Style": "樣式",
+  "Subfolder": "子資料夾",
+  "Subfolder name": "子資料夾名稱",
+  "Subject": "主體",
+  "Subtract": "減去",
+  "Suggestions": "建議",
+  "Summer Haze": "夏日薄霧",
+  "Sunday": "星期日",
+  "Survey": "總覽",
+  "Survey (N)": "總覽（N）",
+  "Swap": "交換",
+  "Swap Aspect (X)": "交換長寬比（X）",
+  "Swap Before and After Settings": "交換編輯前與編輯後設定",
+  "Swap Compare Photos": "交換比較照片",
+  "Switch light / dark theme": "切換淺色／深色主題",
+  "Sync Settings": "同步設定",
+  "System Info": "系統資訊",
+  "System Info…": "系統資訊…",
+  "System default": "系統預設值",
+  "Tags": "標籤",
+  "Tags: see Tags beside the template. Files are renamed on disk (with their XMP sidecars); existing names get -1, -2…": "標籤：請參閱範本旁的「標籤」。檔案及其 XMP 附屬檔案會在磁碟上重新命名；遇到同名檔案會加上 -1、-2…",
+  "Take a snapshot": "擷取快照",
+  "Targeted Adjustment": "目標調整",
+  "Targeted adjustment: drag up/down on the photo to adjust the colours there": "目標調整：在照片上向上／下拖曳，調整該位置的色彩",
+  "Targeted adjustment: drag up/down on the photo to adjust the curve there": "目標調整：在照片上向上／下拖曳，調整該位置的曲線",
+  "Teal & Amber": "青綠與琥珀",
+  "Teal & Orange": "青綠與橙色",
+  "Temp": "色溫",
+  "Temperature": "色溫",
+  "Template": "範本",
+  "Temporary session — your library isn't open, and nothing you do here is saved.": "暫存工作階段：照片庫未開啟，此處的操作不會儲存。",
+  "Text": "文字",
+  "Text direction": "文字方向",
+  "Texture": "紋理",
+  "The original files, unchanged, each with an XMP sidecar holding its edits.": "保留未變更的原始檔案，每個檔案附有記錄編輯設定的 XMP 附屬檔案。",
+  "The photo has these settings": "此照片具有這些設定",
+  "Theme": "主題",
+  "They can be restored from Recently Deleted until it is emptied.": "清空「最近刪除」之前，可以從中還原照片。",
+  "Thirds": "三分法",
+  "This folder is not available (drive disconnected?). Smart previews are not built or used until it is back or you choose another folder.": "此資料夾無法使用（磁碟可能已中斷連線）。恢復連線或選擇其他資料夾之前，不會建立或使用智慧型預覽。",
+  "This photo can't be opened": "無法開啟此照片",
+  "Threshold": "臨界值",
+  "Thumbnail cache": "縮圖快取",
+  "Thursday": "星期四",
+  "Tint": "色調",
+  "Title": "標題",
+  "Toggle Keyword from Set": "切換關鍵字集中的關鍵字",
+  "Toggle Section": "切換區段",
+  "Toggle Zoom": "切換縮放",
+  "Tone Curve": "色調曲線",
+  "Tools": "工具",
+  "Top Level": "最上層",
+  "Transfer": "傳輸",
+  "Treatment": "處理方式",
+  "Triangle": "三角形",
+  "Try Again": "再試一次",
+  "Tuesday": "星期二",
+  "Tungsten": "鎢絲燈",
+  "Turn Off": "關閉",
+  "Turn on Include subfolders, or pick another folder under Local": "啟用「包含子資料夾」，或在本機中選擇其他資料夾",
+  "Type": "類型",
+  "Uncheck All": "全部取消勾選",
+  "Undo": "復原",
+  "Unedited": "未編輯",
+  "Unflag": "移除旗標",
+  "Unflagged": "無旗標",
+  "Ungroup Stack": "取消堆疊",
+  "Unknown Date": "未知日期",
+  "Unrated": "未評分",
+  "Unreadable": "無法讀取",
+  "Update": "更新",
+  "Update Mask Shape": "更新遮色片形狀",
+  "Update Preset with Current Settings": "以目前設定更新預設集",
+  "Update Rules from Current Filter": "依目前篩選條件更新規則",
+  "Update Version": "更新版本",
+  "Update Version with Current Settings": "以目前設定更新版本",
+  "Update with Current Settings": "以目前設定更新",
+  "Upright": "透視校正",
+  "Urban": "城市",
+  "Use Keyword Set": "使用關鍵字集",
+  "Use Library Folder": "使用照片庫資料夾",
+  "Use camera-specific defaults": "使用個別相機的預設值",
+  "Use the GPU for rendering": "使用 GPU 算繪",
+  "User Presets": "使用者預設集",
+  "Value": "數值",
+  "Variance": "變異數",
+  "Version": "版本",
+  "Version name": "版本名稱",
+  "Versions": "版本",
+  "Versions (Shift+V)": "版本（Shift+V）",
+  "Vertical": "垂直",
+  "Vertical text": "垂直文字",
+  "Vibrance": "自然飽和度",
+  "Videos": "影片",
+  "View": "檢視",
+  "Vignette": "暗角",
+  "Vignetting": "暗角",
+  "Vintage": "復古",
+  "Virtual Copy": "虛擬副本",
+  "Visible": "可見照片",
+  "Visualize Spots": "顯示斑點",
+  "Visualize Spots (A)": "顯示斑點（A）",
+  "Visualize range": "顯示範圍",
+  "Vivid": "鮮豔",
+  "Vivid Pop": "鮮明色彩",
+  "Warm Film": "暖調底片",
+  "Warm Glow": "暖光",
+  "Warm Print": "暖調沖印",
+  "Warm Table": "溫暖餐桌",
+  "Watched folder": "監看的資料夾",
+  "Watermark": "浮水印",
+  "Wednesday": "星期三",
+  "What's New": "新增功能",
+  "When rated or hovered": "評分或游標停留時",
+  "White Balance": "白平衡",
+  "White Balance Selector": "白平衡選取器",
+  "White Balance Selector (W)": "白平衡選取器（W）",
+  "Whites": "白色色階",
+  "Width": "寬度",
+  "Width (% of photo)": "寬度（照片百分比）",
+  "Width (px)": "寬度（像素）",
+  "Width × Height": "寬度 × 高度",
+  "Window": "視窗",
+  "Winter Blue": "冬日藍調",
+  "XMP Sidecar Preferences": "XMP 附屬檔案偏好設定",
+  "XMP sidecars": "XMP 附屬檔案",
+  "Year": "年",
+  "Yellow": "黃色",
+  "Yellow Hue": "黃色色相",
+  "Yellow Luminance": "黃色明度",
+  "Yellow Saturation": "黃色飽和度",
+  "Yes": "是",
+  "Your library couldn't be opened": "無法開啟你的照片庫",
+  "Zoom": "縮放",
+  "Zoom 100%": "縮放至 100%",
+  "Zoom In": "放大",
+  "Zoom Out": "縮小",
+  "Zoom to Fit": "縮放至符合視窗",
+  "Zoom to page level": "符合頁面大小",
+  "and": "且",
+  "comma, separated": "以逗號分隔",
+  "memory only": "僅記憶體",
+  "none": "無",
+  "not available here": "此處無法使用",
+  "of the following rules:": "下列規則：",
+  "this photo": "這張照片",
+  "日本語": "日本語",
+  "繁體中文（台灣）": "繁體中文（台灣）",
+  "In Recently Deleted": "在「最近刪除」中"
+}
diff --git a/crates/ui-egui/src/control.rs b/crates/ui-egui/src/control.rs
index d38980654..b592557a7 100644
--- a/crates/ui-egui/src/control.rs
+++ b/crates/ui-egui/src/control.rs
@@ -267,6 +267,7 @@ pub fn handle(app: &mut LightcraftApp, ctx: &egui::Context, req: &ControlRequest
                     u.dialog = app.ui.dialog.clone();
                     u.status = app.ui.status.clone();
                     app.ui = u;
+                    crate::i18n::set_language(app.ui.language);
                     ctx.request_repaint();
                     ok(serde_json::to_value(&app.ui).unwrap_or_default())
                 }
diff --git a/crates/ui-egui/src/i18n.rs b/crates/ui-egui/src/i18n.rs
index c208ecb6e..3fc906449 100644
--- a/crates/ui-egui/src/i18n.rs
+++ b/crates/ui-egui/src/i18n.rs
@@ -118,6 +118,7 @@ macro_rules! language_table {
 language_table! {
     En, "en";
     ZhHans, "zh-hans", "简体中文", "Hans", include_str!("../locales/zh-hans.json");
+    ZhHant, "zh-hant", "繁體中文（台灣）", "Hant", include_str!("../locales/zh-hant.json");
     Ja, "ja", "日本語", "Jpan", include_str!("../locales/ja.json");
 }
 
@@ -183,6 +184,93 @@ fn catalog_verbatim(language: Locale) -> BTreeMap<String, &'static str> {
 // `locales/*-formats.json`.
 include!(concat!(env!("OUT_DIR"), "/tr-formats.rs"));
 
+/// A stock preset's or profile's name in the UI language; an imported or user-edited name stays
+/// exactly as its owner wrote it.
+pub fn builtin_label(source: &str, builtin: bool) -> &str {
+    if builtin { tr(source) } else { source }
+}
+
+/// An Activity (history) step for display. The step's stored label stays English; generated steps
+/// are translated around the names they carry, and a user preset's name is kept verbatim.
+pub fn history_label(source: &str, presets: &[lightcraft_develop::Preset]) -> String {
+    if let Some(name) = source.strip_prefix("Preset: ") {
+        // A user preset may share a stock preset's name: then the step could be either, so it
+        // keeps the name as written.
+        let builtin = presets.iter().any(|p| p.builtin && p.name == name) && !presets.iter().any(|p| !p.builtin && p.name == name);
+        return tr_format!("Preset: {name}", name = builtin_label(name, builtin));
+    }
+    if let Some(name) = source.strip_prefix("Reset ") {
+        return tr_format!("Reset {name}", name = tr(name));
+    }
+    if let Some(name) = source.strip_prefix("Quick Develop: ") {
+        return tr_format!("Quick Develop: {name}", name = tr(name));
+    }
+    tr(source).to_string()
+}
+
+/// A library source's heading (All Photos, Recently Deleted…) in the UI language; an album's
+/// name is the user's and stays verbatim.
+pub fn source_label(source: lightcraft_engine::LibrarySource, catalog: &lightcraft_catalog::Catalog) -> String {
+    let label = source.label(catalog);
+    if matches!(source, lightcraft_engine::LibrarySource::Album(id) if catalog.album(id).is_some()) { label } else { tr(&label).to_string() }
+}
+
+/// A date group heading (`2026-09-20`, `2026-09`, `2026`) in the UI language: the grid's full
+/// form, or the date sidebar's `short` one ("Sunday, 20" / "September" / "2026"). English keeps the
+/// catalog's own wording; every other language formats it with its `*-formats.json` date
+/// patterns and weekday names. The grouping keys themselves never change.
+pub fn date_group_label(key: &str, short: bool) -> String {
+    let label = lightcraft_catalog::dates::group_label(key);
+    if language() == Locale::En {
+        return if short {
+            match key.len() {
+                // "September 2026" → "September"
+                7 => label.split(' ').next().unwrap_or(&label).to_string(),
+                // "Sunday, 20 September 2026" → "Sunday, 20"
+                10 => label.rsplitn(3, ' ').nth(2).unwrap_or(&label).to_string(),
+                _ => label,
+            }
+        } else {
+            label
+        };
+    }
+    let Some(year) = key.get(..4).and_then(|y| y.parse::<u32>().ok()) else { return tr(&label).to_string() };
+    if key.len() == 4 {
+        return tr_format!("{year}", year = year);
+    }
+    let Some(month) = key.get(5..7).and_then(|m| m.parse::<u32>().ok()).filter(|m| (1..=12).contains(m)) else {
+        return tr(&label).to_string();
+    };
+    if key.len() == 7 {
+        return if short { tr_format!("{month}", month = month) } else { tr_format!("{month} {year}", month = month, year = year) };
+    }
+    if key.len() == 10
+        && let Some(weekday) = lightcraft_catalog::dates::weekday(key)
+        && let Some(day) = key.get(8..10).and_then(|d| d.parse::<u32>().ok())
+    {
+        let weekday = tr(weekday);
+        return if short {
+            tr_format!("{weekday}, {day}", weekday = weekday, day = day)
+        } else {
+            tr_format!("{weekday}, {day} {month} {year}", weekday = weekday, day = day, month = month, year = year)
+        };
+    }
+    tr(&label).to_string()
+}
+
+/// A capture time for display in the UI language (English: "March 30, 2022 at 10:11:11 PM");
+/// the metadata itself is never rewritten, and a value that doesn't parse is shown as it is.
+pub fn display_time(iso: &str) -> String {
+    if language() == Locale::En || lightcraft_catalog::dates::normalize_iso(iso).is_none() {
+        return lightcraft_catalog::dates::display_time(iso);
+    }
+    let date = date_group_label(iso.get(..10).unwrap_or(iso), false);
+    match iso.get(11..).filter(|time| !time.is_empty()) {
+        Some(time) => format!("{date} {time}"),
+        None => date,
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -205,10 +293,11 @@ mod tests {
         }
     }
 
-    /// The catalogs of the translations agree: same keys, same format placeholders. A source string
-    /// added to one language but forgotten in another fails here.
+    /// Where two catalogs translate the same text they agree on its placeholders. Catalogs may cover
+    /// different sets of messages (a message a language lacks shows in English): the gaps are
+    /// reported, not failed, so a translation can grow at its own pace.
     #[test]
-    fn catalogs_agree_on_keys_and_placeholders() {
+    fn catalogs_agree_on_placeholders_and_report_gaps() {
         let fields = |text: &str| {
             let mut out: Vec<String> = Vec::new();
             let mut rest = text;
@@ -221,18 +310,15 @@ mod tests {
             out
         };
         let translated: Vec<Locale> = Locale::ALL.iter().copied().filter(|language| *language != Locale::En).collect();
-        let Some((first, rest)) = translated.split_first() else { return };
-        for language in rest {
-            let (a, b) = (first.catalog(), language.catalog());
-            for (key, value) in a {
-                let Some(other) = b.get(key) else {
-                    panic!("{language:?} is missing a translation for {key:?}");
-                };
-                assert_eq!(fields(key), fields(value), "{first:?}: {key:?} -> {value:?}");
-                assert_eq!(fields(key), fields(other), "{language:?}: {key:?} -> {other:?}");
+        let all: std::collections::BTreeSet<&String> = translated.iter().flat_map(|language| language.catalog().keys()).collect();
+        for language in &translated {
+            let catalog = language.catalog();
+            for (key, value) in catalog {
+                assert_eq!(fields(key), fields(value), "{language:?}: {key:?} -> {value:?}");
             }
-            for key in b.keys() {
-                assert!(a.contains_key(key), "{language:?} translates {key:?}, which {first:?} does not");
+            let missing: Vec<&&String> = all.iter().filter(|key| !catalog.contains_key(key.as_str())).collect();
+            if !missing.is_empty() {
+                eprintln!("{} lacks {} message(s) another language translates (shown in English): {missing:?}", language.code(), missing.len());
             }
         }
     }
@@ -245,6 +331,12 @@ mod tests {
         assert_eq!(Locale::parse_tag("zh-hans"), Some(Locale::ZhHans));
         assert_eq!(Locale::parse_tag("zh"), Some(Locale::ZhHans));
         assert_eq!(Locale::parse_tag("zh_CN"), Some(Locale::ZhHans));
+        assert_eq!(Locale::parse_tag("zh-hant"), Some(Locale::ZhHant));
+        assert_eq!(Locale::parse_tag("zh-Hant"), Some(Locale::ZhHant));
+        assert_eq!(Locale::parse_tag("zh-TW"), Some(Locale::ZhHant));
+        assert_eq!(Locale::parse_tag("zh_TW.UTF-8"), Some(Locale::ZhHant));
+        assert_eq!(Locale::parse_tag("zh-HK"), Some(Locale::ZhHant));
+        assert_eq!(Locale::parse_tag("zh-Hant-TW"), Some(Locale::ZhHant));
         assert_eq!(Locale::parse_tag("zh-CN"), Some(Locale::ZhHans));
         assert_eq!(Locale::parse_tag("ja_JP.UTF-8"), Some(Locale::Ja));
         assert_eq!(Locale::parse_tag("de"), None);
@@ -313,7 +405,7 @@ mod tests {
             // The faces this language's script needs; a language the craft-fonts input does not
             // cover (a translation added ahead of its font) is reported, not failed.
             let mut faces: Vec<&str> =
-                lightcraft_engine::CRAFT_FONTS.iter().filter(|font| font.covers(language.script())).map(|font| font.family).collect();
+                lightcraft_engine::CRAFT_FONTS.iter().filter(|font| font.serves(language.script())).map(|font| font.family).collect();
             faces.dedup();
             if faces.is_empty() {
                 eprintln!("skipped {}: built without a craft-fonts face for {}", language.code(), language.script());
@@ -360,8 +452,12 @@ mod tests {
     /// The language menu covers every language, and a language's own command selects it.
     #[test]
     fn language_commands_cover_every_language() {
-        let commands =
-            [("app.language.english", Locale::En), ("app.language.simplifiedChinese", Locale::ZhHans), ("app.language.japanese", Locale::Ja)];
+        let commands = [
+            ("app.language.traditionalChinese", Locale::ZhHant),
+            ("app.language.english", Locale::En),
+            ("app.language.simplifiedChinese", Locale::ZhHans),
+            ("app.language.japanese", Locale::Ja),
+        ];
         // One command per language, and every command reachable from the menu table.
         assert_eq!(commands.len(), Locale::ALL.len());
         for (id, language) in commands {
@@ -479,9 +575,9 @@ mod tests {
     /// family, Monospace included.
     #[test]
     fn craft_fonts_render_cjk_in_the_ui() {
-        let samples = [(Locale::Ja, "日本語の文字"), (Locale::ZhHans, "简体中文字")];
+        let samples = [(Locale::Ja, "日本語の文字"), (Locale::ZhHans, "简体中文字"), (Locale::ZhHant, "繁體中文字")];
         for (language, sample) in samples {
-            if !lightcraft_engine::CRAFT_FONTS.iter().any(|font| font.covers(language.script())) {
+            if !lightcraft_engine::CRAFT_FONTS.iter().any(|font| font.serves(language.script())) {
                 eprintln!("skipped {}: built without a craft-fonts face for {}", language.code(), language.script());
                 continue;
             }
@@ -531,4 +627,104 @@ mod tests {
         }
         set_language(Locale::En);
     }
+
+    /// Traditional Chinese through the menu command and the control channel, persisted, with
+    /// localised headings and dates; ids and user text are untouched.
+    #[test]
+    fn traditional_chinese_switches_through_menu_and_control_and_persists() {
+        use crate::control::{ControlRequest, Outcome};
+        let mut app = crate::LightcraftApp::new(lightcraft_engine::Session::with_demo(), Default::default());
+        app.run("app.language.traditionalChinese", serde_json::json!({})).unwrap();
+        assert_eq!(app.ui.language, Locale::ZhHant);
+        // Applied at once, not on the next frame.
+        assert_eq!(tr("File"), "檔案");
+        assert_eq!(source_label(lightcraft_engine::LibrarySource::All, &app.session.catalog), "所有照片");
+        assert_eq!(date_group_label("2026-09-20", false), "2026年9月20日 星期日");
+        assert_eq!(date_group_label("2026-09-20", true), "20日 星期日");
+        assert_eq!(date_group_label("2026-09", false), "2026年9月");
+        assert_eq!(date_group_label("2026-09", true), "9月");
+        assert_eq!(date_group_label("2026", false), "2026年");
+        assert_eq!(date_group_label("", false), "未知日期");
+        assert_eq!(display_time("2026-09-20T16:04:05"), "2026年9月20日 星期日 16:04:05");
+        assert_eq!(display_time("a-user-value"), "a-user-value");
+        assert_eq!(crate::menubar::checked(&app, "app.language.traditionalChinese"), Some(true));
+        assert_eq!(crate::menubar::checked(&app, "app.language.english"), Some(false));
+        assert_eq!(tr("my-photo.jpg"), "my-photo.jpg");
+        for id in ["album.addPhotos", "metadata.applyPreset", "label.applySet"] {
+            assert_eq!(crate::menubar::display_item_label(id, &serde_json::json!({"id": 1}), "Color"), "Color");
+        }
+        assert_eq!(crate::menubar::display_item_label("view.photoGrid", &serde_json::Value::Null, "Color"), "色彩");
+        assert_eq!(tr_format!("{n} photo{}", "s", n = 12), "12 張照片");
+        assert_eq!(tr_format!("Exported {ok} of {total} photo{}", "s", ok = 4, total = 12), "已匯出 4／12 張照片");
+        let saved = serde_json::to_string(&app.ui).unwrap();
+        assert!(saved.contains(r#""language":"zh-hant""#), "{saved}");
+        assert_eq!(serde_json::from_str::<crate::state::UiState>(&saved).unwrap().language, Locale::ZhHant);
+        let ctx = egui::Context::default();
+        app.ui.language = Locale::En;
+        for code in ["zh-hant", "zh-Hant", "zh-TW", "zh_TW", "zh-HK"] {
+            let (req, _) = ControlRequest::new("ui.set", serde_json::json!({"language": code}));
+            let Outcome::Done(reply) = crate::control::handle(&mut app, &ctx, &req) else { panic!("expected a reply") };
+            assert_eq!(reply["ok"], true, "{code}");
+            assert_eq!(app.ui.language, Locale::ZhHant, "{code}");
+            assert_eq!(language(), Locale::ZhHant, "{code} applies at once");
+        }
+        let (req, _) = ControlRequest::new("ui.set", serde_json::json!({"language": "xx"}));
+        let Outcome::Done(reply) = crate::control::handle(&mut app, &ctx, &req) else { panic!("expected a reply") };
+        assert_eq!(reply["ok"], false);
+        assert_eq!(app.ui.language, Locale::ZhHant);
+        let ids = |app: &crate::LightcraftApp| crate::menus::menu_entries(app).into_iter().map(|entry| entry.id).collect::<Vec<_>>();
+        let chinese_ids = ids(&app);
+        app.run("app.language.english", serde_json::json!({})).unwrap();
+        assert_eq!(tr("File"), "File");
+        assert_eq!(chinese_ids, ids(&app));
+    }
+
+    /// Dates follow every language's own patterns; English keeps the catalog's wording.
+    #[test]
+    fn date_headings_in_every_language() {
+        set_language(Locale::En);
+        assert_eq!(date_group_label("2026-09-20", false), "Sunday, 20 September 2026");
+        assert_eq!(date_group_label("2026-09-20", true), "Sunday, 20");
+        assert_eq!(date_group_label("2026-09", true), "September");
+        assert_eq!(display_time("2026-09-20T16:04:05"), lightcraft_catalog::dates::display_time("2026-09-20T16:04:05"));
+        set_language(Locale::Ja);
+        assert_eq!(date_group_label("2026-09-20", false), "2026年9月20日（日曜日）");
+        assert_eq!(date_group_label("2026-09", true), "9月");
+        set_language(Locale::ZhHans);
+        assert_eq!(date_group_label("2026-09-20", false), "2026年9月20日 星期日");
+        for language in Locale::ALL {
+            set_language(*language);
+            // A key that is not a date never panics and never shows a raw pattern.
+            for key in ["", "abcd", "2026-xx", "2026-13", "2026-09-xx", "２０２６-09"] {
+                assert!(!date_group_label(key, false).contains('{'), "{language:?}: {key:?}");
+                assert!(!date_group_label(key, true).contains('{'), "{language:?}: {key:?}");
+            }
+        }
+        set_language(Locale::En);
+    }
+
+    /// Stock presets and panel headers are translated; a user preset keeps its name, also when it
+    /// shares a stock preset's name.
+    #[test]
+    fn traditional_chinese_presets_and_panel_headers_are_painted() {
+        let ctx = egui::Context::default();
+        crate::theme::install_fonts(&ctx);
+        let mut app = crate::LightcraftApp::new(lightcraft_engine::Session::with_demo(), Default::default());
+        app.ui.presets = true;
+        let builtin = app.session.presets.iter().find(|p| p.name == "Warm Glow").unwrap().clone();
+        app.session.presets.push(lightcraft_develop::Preset { id: "user.test".into(), builtin: false, ..builtin });
+        for (panel, title) in [(crate::state::RightPanel::Activity, "歷史紀錄"), (crate::state::RightPanel::Versions, "版本")] {
+            app.ui.right = panel;
+            let text = painted_text(&ctx, &mut app, Locale::ZhHant);
+            assert!(text.contains(title), "{text}");
+            assert!(!text.contains("History") && !text.contains("Versions"), "{text}");
+            assert!(text.contains("暖光"), "stock preset: {text}");
+            assert!(text.contains("Warm Glow"), "user preset: {text}");
+            assert!(text.contains("色彩"), "stock group: {text}");
+        }
+        assert_eq!(history_label("Exposure", &app.session.presets), "曝光");
+        assert_eq!(history_label("Preset: Warm Film", &app.session.presets), "預設集：暖調底片");
+        assert_eq!(history_label("Preset: Warm Glow", &app.session.presets), "預設集：Warm Glow");
+        set_language(Locale::En);
+    }
 }
diff --git a/crates/ui-egui/src/menus.rs b/crates/ui-egui/src/menus.rs
index 9f63e1088..1c57d6c85 100644
--- a/crates/ui-egui/src/menus.rs
+++ b/crates/ui-egui/src/menus.rs
@@ -15,6 +15,7 @@ pub type UiCommand = (&'static str, &'static str, Option<&'static str>, &'static
 pub const LANGUAGE_COMMANDS: &[UiCommand] = &[
     ("app.language.english", crate::i18n::Locale::En.name(), None, "Edit>Language"),
     ("app.language.simplifiedChinese", crate::i18n::Locale::ZhHans.name(), None, "Edit>Language"),
+    ("app.language.traditionalChinese", crate::i18n::Locale::ZhHant.name(), None, "Edit>Language"),
     ("app.language.japanese", crate::i18n::Locale::Ja.name(), None, "Edit>Language"),
 ];
 
@@ -30,6 +31,7 @@ pub fn language_from_command(id: &str) -> Option<crate::i18n::Locale> {
     match id {
         "app.language.english" => Some(crate::i18n::Locale::En),
         "app.language.simplifiedChinese" => Some(crate::i18n::Locale::ZhHans),
+        "app.language.traditionalChinese" => Some(crate::i18n::Locale::ZhHant),
         "app.language.japanese" => Some(crate::i18n::Locale::Ja),
         _ => None,
     }
@@ -231,6 +233,9 @@ pub fn parse_rgb(v: &Value) -> Option<[u8; 3]> {
 pub fn run_ui_command(app: &mut LightcraftApp, id: &str, p: &Value) -> Option<Result<Value, String>> {
     if let Some(language) = language_from_command(id) {
         app.ui.language = language;
+        // Immediately, not on the next frame: the reply and anything else run this frame
+        // (menus rebuilt from it, toasts) are already in the new language.
+        crate::i18n::set_language(app.ui.language);
         return Some(Ok(json!(app.ui.language)));
     }
     let ctx = egui::Context::default();
diff --git a/crates/ui-egui/src/panels/dialogs.rs b/crates/ui-egui/src/panels/dialogs.rs
index 1ea18d0ed..a9ecdcfe4 100644
--- a/crates/ui-egui/src/panels/dialogs.rs
+++ b/crates/ui-egui/src/panels/dialogs.rs
@@ -466,7 +466,7 @@ pub fn show(app: &mut LightcraftApp, ctx: &egui::Context) {
                                     ui.separator();
                                 }
                                 builtin = b;
-                                if ui.selectable_label(false, &p.name).clicked() {
+                                if ui.selectable_label(false, crate::i18n::builtin_label(&p.name, b)).clicked() {
                                     chosen = Some(p.name);
                                 }
                             }
@@ -701,7 +701,7 @@ pub fn show(app: &mut LightcraftApp, ctx: &egui::Context) {
                 Dialog::Import { opts } => crate::import::body(app, ui, opts),
                 Dialog::Settings { tab } => crate::panels::settings::body(app, ui, tab),
                 Dialog::ConfirmDelete { count } => {
-                    let what = if *count == 1 { "this photo".to_string() } else { crate::i18n::tr_format!("these {count} photos", count = count) };
+                    let what = if *count == 1 { crate::i18n::tr("this photo").to_string() } else { crate::i18n::tr_format!("these {count} photos", count = count) };
                     ui.label(crate::i18n::tr_format!("Move {what} to Recently Deleted?", what = what));
                     ui.label(egui::RichText::new(crate::i18n::tr("They can be restored from Recently Deleted until it is emptied.")).color(t.text_dim));
                 }
@@ -710,7 +710,7 @@ pub fn show(app: &mut LightcraftApp, ctx: &egui::Context) {
                     ui.label(crate::i18n::tr_format!("Version {} — a clean-room, pure-Rust photo library and raw developer.", env!("CARGO_PKG_VERSION")));
                     ui.label(format!("MIT OR Apache-2.0. Fonts: {} (OFL). Icons: original.", crate::theme::font_credits()));
                     ui.add_space(10.0);
-                    let discord = egui::Button::new(egui::RichText::new("Join the ArtCraft Discord").font(t.semibold(15.0)).color(egui::Color32::WHITE))
+                    let discord = egui::Button::new(egui::RichText::new(crate::i18n::tr("Join the ArtCraft Discord")).font(t.semibold(15.0)).color(egui::Color32::WHITE))
                         .fill(t.accent)
                         .min_size(egui::vec2(260.0, 34.0));
                     let r = ui.add(discord).on_hover_text(crate::links::DISCORD);
@@ -724,7 +724,7 @@ pub fn show(app: &mut LightcraftApp, ctx: &egui::Context) {
                         ("Source code on GitHub", crate::links::GITHUB),
                         ("ArtCraft — more creative apps", crate::links::WEBSITE),
                     ] {
-                        let r = ui.link(label).on_hover_text(url);
+                        let r = ui.link(crate::i18n::tr(label)).on_hover_text(url);
                         if r.clicked() {
                             let _ = crate::links::open(app, url);
                         }
@@ -775,7 +775,7 @@ pub fn show(app: &mut LightcraftApp, ctx: &egui::Context) {
                     Dialog::Import { opts } => {
                         let n = opts.selected_paths().len();
                         let verb = if opts.copy && opts.move_files { "Move" } else { "Import" };
-                        add_label = format!("{verb} {n} Photo{}", if n == 1 { "" } else { "s" });
+                        add_label = crate::i18n::tr_format!("{verb} {n} Photo{}", if n == 1 { "" } else { "s" }, verb = crate::i18n::tr(verb), n = n);
                         add_label.as_str()
                     }
                     Dialog::Merge { .. } => "Merge",
diff --git a/crates/ui-egui/src/panels/edit.rs b/crates/ui-egui/src/panels/edit.rs
index ff9d9a261..cddb984e1 100644
--- a/crates/ui-egui/src/panels/edit.rs
+++ b/crates/ui-egui/src/panels/edit.rs
@@ -140,8 +140,7 @@ pub fn show(app: &mut LightcraftApp, ui: &mut egui::Ui, id: PhotoId) {
         ui.horizontal(|ui| {
             ui.label(egui::RichText::new(crate::i18n::tr("Profile")).font(t.font(13.0)).color(t.text_dim));
             let name = lightcraft_engine::presets::profile(&d.profile.id).map(|p| p.name).unwrap_or("Color");
-            let r =
-                crate::widgets::dropdown(ui, "profile", if name == "Color" { crate::i18n::tr("Color") } else { name }, t.font(15.0), t.text_label);
+            let r = crate::widgets::dropdown(ui, "profile", crate::i18n::tr(name), t.font(15.0), t.text_label);
             egui::Popup::menu(&r).show(|ui| profile_menu(app, ui, &d));
             ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
                 if crate::widgets::icon_button(ui, "profileBrowser", Icon::ProfileGrid, vec2(28.0, 28.0), false, true, "Browse Profiles").clicked() {
@@ -356,7 +355,7 @@ fn profile_menu(app: &mut LightcraftApp, ui: &mut egui::Ui, d: &DevelopSettings)
                 key: &str,
                 p: &'static lightcraft_engine::presets::ProfileInfo,
                 pick: &mut (Option<&'static str>, Option<&'static str>)| {
-        let r = ui.selectable_label(p.id == cur, p.name);
+        let r = ui.selectable_label(p.id == cur, crate::i18n::tr(p.name));
         register(ui.ctx(), format!("profileMenu:{key}:{}", p.id), r.rect);
         if r.clicked() {
             pick.0 = Some(p.id);
@@ -366,7 +365,7 @@ fn profile_menu(app: &mut LightcraftApp, ui: &mut egui::Ui, d: &DevelopSettings)
         }
     };
     let heading = |ui: &mut egui::Ui, s: &str| {
-        ui.label(egui::RichText::new(s).font(t.semibold(11.5)).color(t.text_dim));
+        ui.label(egui::RichText::new(crate::i18n::tr(s)).font(t.semibold(11.5)).color(t.text_dim));
     };
     for (title, key, ids) in [("Favorites", "fav", app.session.profile_favorites.clone()), ("Recent", "recent", app.session.profile_recent.clone())] {
         let list: Vec<_> = ids.iter().filter_map(|id| profile(id)).collect();
@@ -380,7 +379,7 @@ fn profile_menu(app: &mut LightcraftApp, ui: &mut egui::Ui, d: &DevelopSettings)
         ui.separator();
     }
     for g in profile_groups() {
-        let r = ui.menu_button(g, |ui| {
+        let r = ui.menu_button(crate::i18n::tr(g), |ui| {
             ui.set_min_width(170.0);
             for p in PROFILES.iter().filter(|p| p.group == g) {
                 item(ui, "group", p, &mut pick);
@@ -392,9 +391,9 @@ fn profile_menu(app: &mut LightcraftApp, ui: &mut egui::Ui, d: &DevelopSettings)
     if let Some(p) = profile(cur) {
         let fav = app.session.profile_favorites.iter().any(|f| f == p.id);
         let label = if fav {
-            crate::i18n::tr_format!("Remove “{}” from Favorites", p.name)
+            crate::i18n::tr_format!("Remove “{}” from Favorites", crate::i18n::tr(p.name))
         } else {
-            crate::i18n::tr_format!("Add “{}” to Favorites", p.name)
+            crate::i18n::tr_format!("Add “{}” to Favorites", crate::i18n::tr(p.name))
         };
         let r = ui.button(label);
         register(ui.ctx(), "profileMenu:toggleFavorite", r.rect);
@@ -414,7 +413,7 @@ fn profile_menu(app: &mut LightcraftApp, ui: &mut egui::Ui, d: &DevelopSettings)
         let mut s = d.clone();
         s.profile.id = p.id.to_string();
         s.profile.amount = 100.0;
-        app.hover_preview = Some(crate::HoverPreview { label: crate::i18n::tr_format!("Profile: {}", p.name), settings: s });
+        app.hover_preview = Some(crate::HoverPreview { label: crate::i18n::tr_format!("Profile: {}", crate::i18n::tr(p.name)), settings: s });
     }
     if let Some(id) = pick.0 {
         let _ = app.run("develop.profile", json!({"id": id}));
@@ -811,7 +810,9 @@ fn curve_footer(app: &mut LightcraftApp, ui: &mut egui::Ui, d: &DevelopSettings)
         ui.horizontal(|ui| {
             ui.label(RichText::new(crate::i18n::tr("Point Curve")).font(t.font(12.0)).color(t.text_label));
             let current = matching_preset(&app.session, &d.curve);
-            let r = crate::widgets::dropdown(ui, "curvePreset", current.as_deref().unwrap_or("Custom"), t.font(12.0), t.text);
+            let builtin = current.as_ref().is_none_or(|name| all_presets(&app.session).iter().any(|p| p.builtin && &p.name == name));
+            let label = crate::i18n::builtin_label(current.as_deref().unwrap_or("Custom"), builtin);
+            let r = crate::widgets::dropdown(ui, "curvePreset", label, t.font(12.0), t.text);
             egui::Popup::menu(&r).show(|ui| {
                 ui.set_min_width(180.0);
                 let presets = all_presets(&app.session);
@@ -821,7 +822,7 @@ fn curve_footer(app: &mut LightcraftApp, ui: &mut egui::Ui, d: &DevelopSettings)
                         user_seen = true;
                         ui.separator();
                     }
-                    let r = ui.selectable_label(current.as_deref() == Some(p.name.as_str()), &p.name);
+                    let r = ui.selectable_label(current.as_deref() == Some(p.name.as_str()), crate::i18n::builtin_label(&p.name, p.builtin));
                     register(ui.ctx(), format!("curvePreset:{}", p.name), r.rect);
                     if r.clicked() {
                         let _ = app.run("curve.applyPreset", json!({"name": p.name}));
diff --git a/crates/ui-egui/src/panels/grid.rs b/crates/ui-egui/src/panels/grid.rs
index 1c5a9a352..e83fec8b4 100644
--- a/crates/ui-egui/src/panels/grid.rs
+++ b/crates/ui-egui/src/panels/grid.rs
@@ -150,7 +150,7 @@ fn show_inner(app: &mut LightcraftApp, ui: &mut egui::Ui) {
             folder_header(app, ui, hr, &b, &ids, local, &cnt)
         }
         None => {
-            let title = app.session.source.label(&app.session.catalog);
+            let title = crate::i18n::source_label(app.session.source, &app.session.catalog);
             ui.painter().text(pos2(hr.left() + 20.0, hr.center().y), Align2::LEFT_CENTER, &title, t.semibold(17.0), t.text);
             ui.painter().text(pos2(hr.right() - 20.0, hr.center().y), Align2::RIGHT_CENTER, cnt, t.font(12.5), t.text_dim);
         }
@@ -164,7 +164,11 @@ fn show_inner(app: &mut LightcraftApp, ui: &mut egui::Ui) {
         if !chips.is_empty() {
             let body = match total {
                 Some(n) if n > 0 => {
-                    crate::i18n::tr_format!("{n} photos in {} are hidden by the filters above", app.session.source.label(&app.session.catalog), n = n)
+                    crate::i18n::tr_format!(
+                        "{n} photos in {} are hidden by the filters above",
+                        crate::i18n::source_label(app.session.source, &app.session.catalog),
+                        n = n
+                    )
                 }
                 _ => "Remove a filter above, or choose Clear all".to_string(),
             };
@@ -409,7 +413,7 @@ fn group_header(app: &mut LightcraftApp, ui: &mut egui::Ui, run: &DateRun, ids:
         p.rect_filled(r, 0.0, t.canvas);
         p.hline(r.x_range(), r.bottom(), Stroke::new(1.0, t.divider));
     }
-    let g = p.layout_no_wrap(run.label.clone(), t.semibold(15.0), if resp.hovered() { t.text } else { t.text_label });
+    let g = p.layout_no_wrap(crate::i18n::date_group_label(&run.key, false), t.semibold(15.0), if resp.hovered() { t.text } else { t.text_label });
     let x = r.left() + 8.0;
     let gw = g.size().x;
     p.galley(pos2(x, r.center().y - g.size().y / 2.0), g, t.text);
@@ -520,7 +524,7 @@ fn cell(app: &mut LightcraftApp, ui: &mut egui::Ui, id: PhotoId, r: Rect, square
                 .collect();
                 if parts.is_empty() { "—".to_string() } else { parts.join(" · ") }
             }
-            "date" => photo.captured.as_deref().map(lightcraft_catalog::dates::display_time).unwrap_or_else(|| "No date".into()),
+            "date" => photo.captured.as_deref().map(crate::i18n::display_time).unwrap_or_else(|| crate::i18n::tr("No date").into()),
             _ => photo.file_name.rsplit_once('.').map(|(n, _)| n.to_string()).unwrap_or(photo.file_name.clone()),
         };
         p.text(pos2(r.left() + 8.0, r.top() + 12.0), Align2::LEFT_CENTER, name, t.font(10.5), t.text_dim);
@@ -786,7 +790,7 @@ pub fn context_menu(app: &mut LightcraftApp, ui: &mut egui::Ui, id: PhotoId) {
     ui.separator();
     ui.menu_button(crate::i18n::tr("Set Rating"), |ui| {
         for r in 0..=5 {
-            if ui.button(if r == 0 { "No Stars".to_string() } else { "★".repeat(r) }).clicked() {
+            if ui.button(if r == 0 { crate::i18n::tr("No Stars").to_string() } else { "★".repeat(r) }).clicked() {
                 let _ = app.run("photo.rate", json!({"rating": r}));
             }
         }
diff --git a/crates/ui-egui/src/panels/left.rs b/crates/ui-egui/src/panels/left.rs
index 7d7037435..760eefde8 100644
--- a/crates/ui-egui/src/panels/left.rs
+++ b/crates/ui-egui/src/panels/left.rs
@@ -120,14 +120,12 @@ pub fn show(app: &mut LightcraftApp, ui: &mut egui::Ui) {
             ui.painter().text(pos2(dr.left() + 18.0, dr.center().y), Align2::LEFT_CENTER, crate::i18n::tr("By Date"), t.semibold(13.5), t.text_label);
             for g in app.caches.date_groups(&app.session.catalog).iter() {
                 // year → month → day; a click filters by that prefix, the triangle opens a level
-                if date_row(app, ui, &g.year, &g.year, g.count, 0.0) {
+                if date_row(app, ui, &g.year, &crate::i18n::date_group_label(&g.year, true), g.count, 0.0) {
                     for (m, n) in &g.months {
-                        let label = lightcraft_catalog::dates::group_label(m).split(' ').next().unwrap_or(m).to_string();
+                        let label = crate::i18n::date_group_label(m, true);
                         if date_row(app, ui, m, &label, *n, 16.0) {
                             for (d, n) in g.days.iter().filter(|(d, _)| d.starts_with(m.as_str())) {
-                                let label = lightcraft_catalog::dates::group_label(d);
-                                // "Sunday, 20 September 2026" → "Sunday, 20"
-                                let label = label.rsplitn(3, ' ').nth(2).unwrap_or(&label).to_string();
+                                let label = crate::i18n::date_group_label(d, true);
                                 date_row(app, ui, d, &label, *n, 32.0);
                             }
                         }
diff --git a/crates/ui-egui/src/panels/presets.rs b/crates/ui-egui/src/panels/presets.rs
index 20a095e03..f60ddc5d6 100644
--- a/crates/ui-egui/src/panels/presets.rs
+++ b/crates/ui-egui/src/panels/presets.rs
@@ -85,6 +85,9 @@ pub fn show(app: &mut LightcraftApp, ui: &mut egui::Ui) {
                     groups.entry(p.group.clone()).or_default().push(p.clone());
                 }
                 for (g, items) in groups {
+                    // A group holding stock presets is a stock group (shown in the UI language), even
+                    // when user presets share its name; a group of user presets keeps its name.
+                    let builtin = items.iter().any(|p| p.builtin);
                     let open_id = egui::Id::new(("preset-group", &g));
                     let open: bool = ui.data(|d| d.get_temp(open_id)).unwrap_or(true);
                     let (r, resp) = ui.allocate_exact_size(vec2(ui.available_width(), 32.0), Sense::click());
@@ -95,7 +98,13 @@ pub fn show(app: &mut LightcraftApp, ui: &mut egui::Ui) {
                         if open { Icon::ChevronDown } else { Icon::ChevronRight },
                         t.text_label,
                     );
-                    ui.painter().text(pos2(r.left() + 36.0, r.center().y), Align2::LEFT_CENTER, &g, t.semibold(13.0), t.text_label);
+                    ui.painter().text(
+                        pos2(r.left() + 36.0, r.center().y),
+                        Align2::LEFT_CENTER,
+                        crate::i18n::builtin_label(&g, builtin),
+                        t.semibold(13.0),
+                        t.text_label,
+                    );
                     if resp.clicked() {
                         ui.data_mut(|d| d.insert_temp(open_id, !open));
                     }
@@ -108,7 +117,7 @@ pub fn show(app: &mut LightcraftApp, ui: &mut egui::Ui) {
                         continue;
                     }
                     for pr in items {
-                        let (pid, name, fav) = (pr.id.clone(), pr.name.clone(), pr.favorite);
+                        let (pid, name, fav) = (pr.id.clone(), crate::i18n::builtin_label(&pr.name, pr.builtin).to_string(), pr.favorite);
                         let (r, resp) = ui.allocate_exact_size(vec2(ui.available_width(), row_h), Sense::click());
                         register(ui.ctx(), format!("preset:{pid}"), r);
                         let is_last = last.as_ref().is_some_and(|(l, _)| *l == pid);
@@ -156,7 +165,7 @@ pub fn show(app: &mut LightcraftApp, ui: &mut egui::Ui) {
                         }
                         let (builtin, group) = (pr.builtin, pr.group.clone());
                         resp.context_menu(|ui| {
-                            if ui.button(if fav { "Remove from Favorites" } else { "Add to Favorites" }).clicked() {
+                            if ui.button(crate::i18n::tr(if fav { "Remove from Favorites" } else { "Add to Favorites" })).clicked() {
                                 let _ = app.run("preset.favorite", json!({"id": pid}));
                             }
                             if builtin {
@@ -168,7 +177,7 @@ pub fn show(app: &mut LightcraftApp, ui: &mut egui::Ui) {
                                 .clicked()
                             {
                                 match app.run("preset.update", json!({"id": pid})) {
-                                    Ok(_) => app.toast(ui.ctx(), format!("Updated “{name}”")),
+                                    Ok(_) => app.toast(ui.ctx(), crate::i18n::tr_format!("Updated “{name}”", name = name)),
                                     Err(e) => app.toast(ui.ctx(), e),
                                 }
                             }
diff --git a/crates/ui-egui/src/panels/profiles.rs b/crates/ui-egui/src/panels/profiles.rs
index 7633cdef6..ec4ddc57b 100644
--- a/crates/ui-egui/src/panels/profiles.rs
+++ b/crates/ui-egui/src/panels/profiles.rs
@@ -35,7 +35,7 @@ pub fn show(app: &mut LightcraftApp, ui: &mut egui::Ui, id: PhotoId) {
     let (cr, _) = ui.allocate_exact_size(vec2(ui.available_width(), 34.0), Sense::hover());
     let name = profile(&d.profile.id).map(|p| p.name).unwrap_or("Color");
     ui.painter().text(pos2(cr.left() + 24.0, cr.center().y), Align2::LEFT_CENTER, crate::i18n::tr("Profile"), t.font(13.0), t.text_dim);
-    ui.painter().text(pos2(cr.left() + 84.0, cr.center().y), Align2::LEFT_CENTER, name, t.font(14.0), t.text_label);
+    ui.painter().text(pos2(cr.left() + 84.0, cr.center().y), Align2::LEFT_CENTER, crate::i18n::tr(name), t.font(14.0), t.text_label);
     if d.profile.id != "lc.color" {
         super::edit::control(app, ui, &d, "profile.amount", true);
         ui.add_space(6.0);
@@ -60,7 +60,7 @@ pub fn show(app: &mut LightcraftApp, ui: &mut egui::Ui, id: PhotoId) {
             if open { Icon::ChevronDown } else { Icon::ChevronRight },
             t.text_label,
         );
-        ui.painter().text(pos2(r.left() + 36.0, r.center().y), Align2::LEFT_CENTER, title, t.semibold(13.0), t.text_label);
+        ui.painter().text(pos2(r.left() + 36.0, r.center().y), Align2::LEFT_CENTER, crate::i18n::tr(title), t.semibold(13.0), t.text_label);
         ui.painter().text(pos2(r.right() - 22.0, r.center().y), Align2::RIGHT_CENTER, list.len().to_string(), t.font(12.0), t.text_dim);
         if resp.clicked() {
             ui.data_mut(|m| m.insert_temp(open_id, !open));
@@ -90,7 +90,7 @@ pub fn show(app: &mut LightcraftApp, ui: &mut egui::Ui, id: PhotoId) {
             && let Some(p) = profile(&saved_profile_id)
         {
             let s = with_profile(&d, p);
-            app.hover_preview = Some(HoverPreview { label: crate::i18n::tr_format!("Profile: {}", p.name), settings: s });
+            app.hover_preview = Some(HoverPreview { label: crate::i18n::tr_format!("Profile: {}", crate::i18n::tr(p.name)), settings: s });
         }
     } else {
         ui.data_mut(|m| m.remove::<(PhotoId, String)>(last_hover_id));
@@ -129,7 +129,7 @@ fn cell_ui(app: &mut LightcraftApp, ui: &mut egui::Ui, d: &DevelopSettings, id:
         painter.rect_stroke(thumb, 3.0, Stroke::new(1.0, t.text_dim), egui::StrokeKind::Outside);
     }
     let name_color = if applied { t.text } else { t.text_label };
-    painter.text(pos2(cell.left() + 2.0, thumb.bottom() + 12.0), Align2::LEFT_CENTER, p.name, t.font(12.0), name_color);
+    painter.text(pos2(cell.left() + 2.0, thumb.bottom() + 12.0), Align2::LEFT_CENTER, crate::i18n::tr(p.name), t.font(12.0), name_color);
     // favourite star (always shown when set, on hover otherwise)
     let fav = app.session.profile_favorites.iter().any(|f| f == p.id);
     let star = Rect::from_center_size(pos2(thumb.right() - 13.0, thumb.top() + 13.0), vec2(20.0, 20.0));
@@ -140,10 +140,10 @@ fn cell_ui(app: &mut LightcraftApp, ui: &mut egui::Ui, d: &DevelopSettings, id:
         paint(painter, star.shrink(4.0), if fav { Icon::StarFilled } else { Icon::Star }, if fav || over_star { t.star } else { Color32::WHITE });
     }
     if resp.hovered() && !applied && !over_star {
-        app.hover_preview = Some(HoverPreview { label: crate::i18n::tr_format!("Profile: {}", p.name), settings: s.clone() });
+        app.hover_preview = Some(HoverPreview { label: crate::i18n::tr_format!("Profile: {}", crate::i18n::tr(p.name)), settings: s.clone() });
         ui.data_mut(|m| m.insert_temp(egui::Id::new("last-profile-hover"), (id, p.id.to_string())));
     }
-    let resp = resp.on_hover_text(format!("{} ({})", p.name, p.group));
+    let resp = resp.on_hover_text(format!("{} ({})", crate::i18n::tr(p.name), crate::i18n::tr(p.group)));
     if resp.clicked() {
         if resp.interact_pointer_pos().is_some_and(|q| star.contains(q)) {
             let _ = app.run("profile.favorite", json!({"id": p.id}));
diff --git a/crates/ui-egui/src/panels/right.rs b/crates/ui-egui/src/panels/right.rs
index 1a07b5c6b..6985e1c99 100644
--- a/crates/ui-egui/src/panels/right.rs
+++ b/crates/ui-egui/src/panels/right.rs
@@ -48,7 +48,7 @@ pub fn show(app: &mut LightcraftApp, ui: &mut egui::Ui) {
 pub fn header(ui: &mut egui::Ui, title: &str) {
     let t = Tokens::get(ui.ctx());
     let (r, _) = ui.allocate_exact_size(vec2(ui.available_width(), 46.0), Sense::hover());
-    ui.painter().text(pos2(r.left() + 24.0, r.center().y + 2.0), Align2::LEFT_CENTER, title, t.semibold(15.0), t.text);
+    ui.painter().text(pos2(r.left() + 24.0, r.center().y + 2.0), Align2::LEFT_CENTER, crate::i18n::tr(title), t.semibold(15.0), t.text);
 }
 
 pub fn label_row(ui: &mut egui::Ui, label: &str, value: &str) {
@@ -69,7 +69,7 @@ fn crop(app: &mut LightcraftApp, ui: &mut egui::Ui, id: PhotoId) {
         ui.horizontal(|ui| {
             ui.label(crate::i18n::tr("Aspect Ratio"));
             let cur = d.crop.aspect.map(|(w, h)| format!("{} × {}", w as f64 / 100.0, h as f64 / 100.0)).unwrap_or_else(|| "Free".into());
-            let r = ui.add(egui::Button::new(cur).frame(false));
+            let r = ui.add(egui::Button::new(crate::i18n::tr(&cur)).frame(false));
             register(ui.ctx(), "button:cropAspect", r.rect);
             egui::Popup::menu(&r).show(|ui| {
                 for (label, a) in [
@@ -84,7 +84,7 @@ fn crop(app: &mut LightcraftApp, ui: &mut egui::Ui, id: PhotoId) {
                     ("16 × 9", "16x9"),
                     ("16 × 10", "16x10"),
                 ] {
-                    if ui.button(label).clicked() {
+                    if ui.button(crate::i18n::tr(label)).clicked() {
                         let _ = app.run("crop.aspect", json!({"aspect": a}));
                     }
                 }
@@ -494,7 +494,7 @@ fn info(app: &mut LightcraftApp, ui: &mut egui::Ui, id: PhotoId) {
             if crate::widgets::icon_button(ui, "editCaptureTime", Icon::Pencil, vec2(20.0, 20.0), false, true, "Edit Capture Time…").clicked() {
                 let _ = app.run("dialog.captureTime", json!({}));
             }
-            let cap = p.captured.as_deref().map(lightcraft_catalog::dates::display_time).unwrap_or_else(|| "—".into());
+            let cap = p.captured.as_deref().map(crate::i18n::display_time).unwrap_or_else(|| "—".into());
             ui.with_layout(egui::Layout::left_to_right(egui::Align::Center), |ui| {
                 ui.add(egui::Label::new(egui::RichText::new(cap).size(12.5).color(t.text)).truncate());
             });
@@ -651,7 +651,7 @@ fn copyright_status(app: &mut LightcraftApp, ui: &mut egui::Ui, current: lightcr
 
 fn meta_field(app: &mut LightcraftApp, ui: &mut egui::Ui, label: &str, key: &str, value: &str, lines: usize) {
     let t = Tokens::get(ui.ctx());
-    ui.label(egui::RichText::new(label).size(11.5).color(t.text_dim));
+    ui.label(egui::RichText::new(crate::i18n::tr(label)).size(11.5).color(t.text_dim));
     let id = egui::Id::new(("info-field", key));
     let mut text: String = ui.data(|d| d.get_temp(id)).unwrap_or_else(|| value.to_string());
     let edit = if lines > 1 { egui::TextEdit::multiline(&mut text).desired_rows(lines) } else { egui::TextEdit::singleline(&mut text) };
@@ -830,7 +830,8 @@ fn versions(app: &mut LightcraftApp, ui: &mut egui::Ui, id: PhotoId) {
         let mut auto: bool = ui.data(|d| d.get_temp(tab_id)).unwrap_or(false);
         let named_n = p.versions.iter().filter(|v| !v.auto).count();
         let items = [("Named", "named"), ("Auto", "auto")];
-        let labels = [crate::i18n::tr_format!("Named ({named_n})", named_n = named_n), format!("Auto ({})", p.versions.len() - named_n)];
+        let labels =
+            [crate::i18n::tr_format!("Named ({named_n})", named_n = named_n), crate::i18n::tr_format!("Auto ({})", p.versions.len() - named_n)];
         let items: Vec<(&str, &str)> = items.iter().zip(&labels).map(|((_, k), l)| (l.as_str(), *k)).collect();
         if let Some(i) = crate::widgets::segmented(ui, "versionsTab", &items, Some(auto as usize), 2) {
             auto = i == 1;
@@ -840,7 +841,7 @@ fn versions(app: &mut LightcraftApp, ui: &mut egui::Ui, id: PhotoId) {
         let shown: Vec<(usize, &lightcraft_catalog::Version)> = p.versions.iter().enumerate().filter(|(_, v)| v.auto == auto).collect();
         if shown.is_empty() {
             let msg = if auto { "No automatic versions." } else { "No versions yet. Create one to keep this look." };
-            ui.label(egui::RichText::new(msg).color(t.text_dim));
+            ui.label(egui::RichText::new(crate::i18n::tr(msg)).color(t.text_dim));
         }
         // newest first
         for (i, v) in shown.into_iter().rev() {
@@ -907,6 +908,10 @@ fn versions(app: &mut LightcraftApp, ui: &mut egui::Ui, id: PhotoId) {
 
 /// "Sep 30, 2026, 12:00 PM" from an ISO time.
 fn short_time(iso: &str) -> String {
+    // Other languages use their own date patterns (`i18n::display_time`).
+    if crate::i18n::language() != crate::i18n::Locale::En {
+        return crate::i18n::display_time(iso);
+    }
     let long = lightcraft_catalog::dates::display_time(iso);
     // "September 30, 2026 at 12:00:00 PM" → month abbreviated, seconds dropped
     let (date, time) = long.split_once(" at ").map_or((long.as_str(), None), |(d, t)| (d, Some(t)));
@@ -935,7 +940,13 @@ fn activity(app: &mut LightcraftApp, ui: &mut egui::Ui, id: PhotoId) {
                 ui.painter().rect_filled(r, 3.0, t.hover);
             }
             paint(ui.painter(), Rect::from_min_size(r.min + vec2(0.0, 4.0), vec2(16.0, 16.0)), Icon::Clock, t.icon);
-            ui.painter().text(pos2(r.left() + 24.0, r.center().y), Align2::LEFT_CENTER, &h.label, t.font(12.5), t.text_label);
+            ui.painter().text(
+                pos2(r.left() + 24.0, r.center().y),
+                Align2::LEFT_CENTER,
+                crate::i18n::history_label(&h.label, &app.session.presets),
+                t.font(12.5),
+                t.text_label,
+            );
             if resp.clicked() {
                 let _ = app.run("history.restore", json!({"index": i}));
             }
diff --git a/docs/localization-zh-hans.md b/docs/localization-zh-hans.md
index 2da811bb4..002232b11 100644
--- a/docs/localization-zh-hans.md
+++ b/docs/localization-zh-hans.md
@@ -13,7 +13,7 @@ LightCraft 的界面支持简体中文、日语和英语。语言设置保存在
 - 已知限制：**网页版（wasm32）目前只内嵌日文字体**，因此浏览器里的中文仍显示为方框
   （单个字体文件 16 MB，加上 wasm 会超过托管方 Cloudflare 的 25 MiB 单文件上限）。
   原生桌面版不受影响。
-- 日期分组标题（如 `Sunday, 20 September 2026`）沿用英文格式，尚未本地化。
+- 日期分组标题与拍摄时间按中文格式显示（如 `2026年9月20日 星期日`）。
 
 ## 翻译的维护
 
diff --git a/docs/localization-zh-hant.md b/docs/localization-zh-hant.md
new file mode 100644
index 000000000..349cb20e0
--- /dev/null
+++ b/docs/localization-zh-hant.md
@@ -0,0 +1,46 @@
+# LightCraft 繁體中文（台灣）介面
+
+從「編輯 → 語言 → 繁體中文（台灣）」切換，或開啟「設定 → 一般 → 語言」選擇。
+macOS 的設定也可由「LightCraft → 設定…」或 `⌘,` 開啟。
+語言立即生效，並儲存在應用程式設定的 `ui.json`，下次啟動會沿用。
+英文、簡體中文、繁體中文與日文可隨時互相切換。
+
+繁中翻譯涵蓋 macOS 原生選單、程式內選單與子選單、鍵盤快速鍵說明、照片編輯、
+裁切、遮色片、匯入／匯出、設定、41 個內建編輯預設集與分類、內建描述檔、
+曲線與匯出預設集、歷史紀錄／版本面板、內建照片來源標題、日期群組與拍攝時間、
+照片庫開啟失敗提示及主要處理進度。
+切換介面不會變更操作指令 ID、照片檔名、使用者命名的相簿、預設集或中繼資料。
+未翻譯的技術錯誤、發行說明及部分新增文案仍使用英文。
+
+## 建置與字型
+
+使用既有 [craft-fonts](https://github.com/storytold/craft-fonts) 字型作為建置輸入：
+
+```sh
+CRAFT_FONTS_DIR=../craft-fonts cargo run --release -p lightcraft
+```
+
+craft-fonts 目前沒有繁體中文專用字型：桌面版先以 Noto Sans CJK SC 顯示繁中文字（字形為大陸規範寫法），其次才是日文字型；不在此儲存庫新增字型檔。
+未指定 `CRAFT_FONTS_DIR` 的建置缺少 CJK 字形。
+Web 建置僅嵌入 BIZ UDPGothic Regular，尚未驗證完整繁中文字形覆蓋。
+
+## 自動化與維護
+
+`LIGHTCRAFT_LANGUAGE=zh-hant lightcraft-cli snapshot --demo -o zh-hant.png` 可繪製繁中畫面。
+接受 `zh-hant`、`zh-Hant`、`zh-TW`、`zh_TW.UTF-8` 與 `zh-HK`；儲存時統一使用 `zh-hant`。
+控制通道可切換語言：
+
+```json
+{"method":"ui.set","params":{"language":"zh-hant"}}
+{"method":"ui.menu.invoke","params":{"command":"app.language.traditionalChinese"}}
+```
+
+靜態文案位於 `crates/ui-egui/locales/zh-hant.json`，含變數的訊息位於
+`crates/ui-egui/locales/zh-hant-formats.json`。動態訊息由 Rust 在建置時檢查格式參數，
+所有 `*-formats.json` 須保持相同英文鍵。新增語言的方法見 [`localization.md`](localization.md)。`{:.0}` 消耗英文複數字尾引數，繁中不顯示該字尾。
+
+```sh
+CRAFT_FONTS_DIR=../craft-fonts cargo test -p lightcraft-ui-egui i18n::tests
+```
+
+測試涵蓋翻譯目錄、指令／選單文字、語言切換、設定保存、資料名稱保持原樣及桌面字形。
diff --git a/docs/localization.md b/docs/localization.md
index 3eb5efcaa..f6db12ffe 100644
--- a/docs/localization.md
+++ b/docs/localization.md
@@ -1,22 +1,28 @@
 # Localization
 
 The interface ships in the language it is written in (English) plus every language in the table in
-`crates/ui-egui/src/i18n.rs`. Today that is English, Simplified Chinese (`zh-hans`) and Japanese
-(`ja`). This file is the reference for **adding or maintaining a language**; the per-language notes
-are in [`localization-zh-hans.md`](localization-zh-hans.md) and [`localization-ja.md`](localization-ja.md).
+`crates/ui-egui/src/i18n.rs`. Today that is English, Simplified Chinese (`zh-hans`), Traditional
+Chinese (`zh-hant`, Taiwan) and Japanese (`ja`). This file is the reference for **adding or maintaining a language**; the per-language notes
+are in [`localization-zh-hans.md`](localization-zh-hans.md), [`localization-zh-hant.md`](localization-zh-hant.md) and
+[`localization-ja.md`](localization-ja.md).
 
 ## Adding a language
 
 1. **Translate the two catalogs.** Copy `locales/ja.json` and `locales/ja-formats.json` to
    `locales/<code>.json` and `locales/<code>-formats.json`, then translate the values. Keys are the
-   English source strings and must stay byte-for-byte identical — `cargo test -p lightcraft-ui-egui
-   i18n::tests` fails on a missing, extra or empty entry.
+   English source strings and must stay byte-for-byte identical. The plain catalog may grow at its
+   own pace: a message it lacks shows in English, and `cargo test -p lightcraft-ui-egui i18n::tests
+   -- --nocapture` lists the gaps (it fails on an empty entry or mismatched placeholders). The
+   formats catalog must carry every message (the build fails otherwise), including the date
+   patterns (`{year}`, `{month} {year}`, `{weekday}, {day} {month} {year}`…) that date headings and
+   capture times use in every language but English; weekday names go in the plain catalog.
 2. **Add the table entry** in `crates/ui-egui/src/i18n.rs`:
 
    ```rust
    language_table! {
        En, "en";
        ZhHans, "zh-hans", "简体中文", "Hans", include_str!("../locales/zh-hans.json");
+       ZhHant, "zh-hant", "繁體中文（台灣）", "Hant", include_str!("../locales/zh-hant.json");
        Ja, "ja", "日本語", "Jpan", include_str!("../locales/ja.json");
    }
    ```
diff --git a/docs/parity.md b/docs/parity.md
index fc9226782..63f0cb512 100644
--- a/docs/parity.md
+++ b/docs/parity.md
@@ -503,8 +503,8 @@ under the UI command that wraps it (a no-op error); the UI command now wins.
 | LR-BEHAV-EMPTY-STATES | Empty states | P1 | ✅ | `crates/ui-egui/src/panels/mod.rs` (`empty_message`) | |
 | LR-BEHAV-TOOLTIPS | Tooltips with shortcuts | P0 | ✅ | `crates/ui-egui/src/panels/bottombar.rs` | |
 | LR-BEHAV-ACCESS | Accessibility | P2 | 🟡 | `crates/ui-egui/src/widgets.rs`, `crates/ui-egui/src/panels/grid.rs` | AccessKit (VoiceOver / Narrator / AT-SPI): sliders announce control and value, buttons / icon buttons / dropdowns / section headers / sources their labels and state, grid thumbnails file name, rating, flag and label; the canvas tools (crop, masks) are pointer-only; not audited with a screen reader |
-| LR-BEHAV-LOCALE | Language options | P2 | ✅ | `cmd:app.language.english`, `cmd:app.language.simplifiedChinese`, `cmd:app.language.japanese` | Edit > Language lists every language in the table and the active one is checked; shared with Settings > General (docs/localization.md) |
-| LR-BEHAV-LOCALIZE | Localisation | P2 | 🟡 | `crates/ui-egui/src/i18n.rs`, `crates/ui-egui/locales/`, `docs/localization.md`, `docs/localization-zh-hans.md`, `docs/localization-ja.md` | One table entry per language (code, endonym, ISO 15924 script, catalog): English, Simplified Chinese and Japanese UI with a persisted language preference and craft-fonts regular/bold faces per script; menus, edit, crop/masks, settings, import/export and primary progress messages. Adding a language is a table entry plus two catalogs. Technical errors/release notes and date grouping headers remain English, and the web build embeds only the Japanese face. |
+| LR-BEHAV-LOCALE | Language options | P2 | ✅ | `cmd:app.language.english`, `cmd:app.language.simplifiedChinese`, `cmd:app.language.traditionalChinese`, `cmd:app.language.japanese` | Edit > Language lists every language in the table and the active one is checked; shared with Settings > General (docs/localization.md) |
+| LR-BEHAV-LOCALIZE | Localisation | P2 | 🟡 | `crates/ui-egui/src/i18n.rs`, `crates/ui-egui/locales/`, `docs/localization.md`, `docs/localization-zh-hans.md`, `docs/localization-zh-hant.md`, `docs/localization-ja.md` | One table entry per language (code, endonym, ISO 15924 script, catalog): English, Simplified Chinese, Traditional Chinese (Taiwan) and Japanese UI with a persisted language preference and craft-fonts regular/bold faces per script; menus, edit, crop/masks, settings, import/export and primary progress messages. Adding a language is a table entry plus two catalogs. Stock presets/profiles, history steps, library headings, date headings and capture times are localised (user-named items stay verbatim); the Traditional Chinese catalog is the most complete, the others fall back to English for messages they lack. Technical errors/release notes remain English; Traditional Chinese borrows the Simplified Chinese face (no TC face in craft-fonts yet), and the web build embeds only the Japanese face. |
 | LR-BEHAV-LEARN | Tutorials | OOS | 🚫 | | |
 | LR-BEHAV-WHATSNEW | What's new | P2 | ✅ | `cmd:app.whatsNew`, `docs/whats-new.md` | Help ▸ What's New: release highlights |
 | LR-BEHAV-AI-EA | Early-access badges | P2 | ⬜ | | |