File formats: count JPEG XL beside Targa, and translate its messages in ka and zh-hant

docs/file-format-parity.md counts 26 formats opened or placed, Targa
and JPEG XL among them. clipboard.importImage's params text names
Targa, which main reads by its header, beside JPEG XL. The Georgian
and Traditional Chinese catalogs, which now translate every status
and error message, get the three JPEG XL messages.

crates/engine/src/cmd/clipboard/flavours.rs

@@ -166,7 +166,7 @@ pub fn specs() -> Vec<CommandSpec> {
             "Load Image into Clipboard",
             [],
             None,
-            "{dataBase64 (PNG, JPEG, GIF, WebP, TIFF, BMP, PSD, PSB or JPEG XL bytes), mime?: the type the system clipboard gave (an image/… type; the format is read from the bytes), center?: [x, y]} replace the clipboard with the image, embedded at 100% of its physical size (its resolution, else 72 ppi), centred on `center` (default: the first artboard) → {count, width, height (pt), pixelWidth, pixelHeight}; then run edit.paste",
+            "{dataBase64 (PNG, JPEG, GIF, WebP, TIFF, BMP, Targa, PSD, PSB or JPEG XL bytes), mime?: the type the system clipboard gave (an image/… type; the format is read from the bytes), center?: [x, y]} replace the clipboard with the image, embedded at 100% of its physical size (its resolution, else 72 ppi), centred on `center` (default: the first artboard) → {count, width, height (pt), pixelWidth, pixelHeight}; then run edit.paste",
             has_doc,
             import_image
         ),

crates/ui-egui/src/i18n/ka.tsv

@@ -4132,6 +4132,9 @@ effect	Regular	ჩვეულებრივი
 @msg	the PSD file is cut short	PSD ფაილი შეკვეცილია
 @msg	the PSD file's header is damaged	PSD ფაილის სათაური დაზიანებულია
 @msg	the PSD file's image data can't be read: {e}	PSD ფაილის გამოსახულების მონაცემების წაკითხვა ვერ ხერხდება: {e}
+@msg	the JPEG XL file is cut short	JPEG XL ფაილი შეკვეცილია
+@msg	CMYK JPEG XL images can't be read	CMYK JPEG XL გამოსახულებების წაკითხვა ვერ ხერხდება
+@msg	the JPEG XL file can't be read: {e}	JPEG XL ფაილის წაკითხვა ვერ ხერხდება: {e}
 @msg	Imported library {name}	შემოტანილია ბიბლიოთეკა {name}
 @msg	Invalid panel layout; restored the default dock	პანელების განლაგება არასწორია; აღდგენილია ნაგულისხმევი დოკი
 @msg	action is required	action აუცილებელია

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

@@ -2198,6 +2198,9 @@ file-filter	Templates	範本
 @msg	the PSD file is cut short	PSD 檔案不完整
 @msg	the PSD file's header is damaged	PSD 檔頭已損毀
 @msg	the PSD file's image data can't be read: {e}	無法讀取 PSD 檔案的影像資料：{e}
+@msg	the JPEG XL file is cut short	JPEG XL 檔案不完整
+@msg	CMYK JPEG XL images can't be read	無法讀取 CMYK 模式的 JPEG XL 影像
+@msg	the JPEG XL file can't be read: {e}	無法讀取 JPEG XL 檔案：{e}
 @msg	Imported library {name}	已匯入資料庫 {name}
 @msg	invalid restored panel group	還原的面板群組無效
 @msg	Invalid panel layout; restored the default dock	面板配置無效；已還原預設停駐區

docs/file-format-parity.md

@@ -17,7 +17,7 @@ from the public specifications, and users' own `.ai` files are used locally only
 
 | | Illustrator | VectorCraft | Notes |
 |---|---:|---:|---|
-| Formats opened or placed | ~30 | 25 | missing: FreeHand, CorelDRAW, DWG, HEIC/HEIF, JPEG 2000, PICT, PCX, Pixar, Word `.doc`, PS |
+| Formats opened or placed | ~30 | 26 | missing: FreeHand, CorelDRAW, DWG, HEIC/HEIF, JPEG 2000, PICT, PCX, Pixar, Word `.doc`, PS |
 | Formats saved (Save As) | 6 (AI, AIT, PDF, EPS, SVG, SVGZ) | 6 + native | `.ai` written PDF-compatible (no Illustrator editing data) or as legacy version 7 (layers and groups, one artboard per file) |
 | Formats exported | ~16 | 17 | missing: DWG, 3D (OBJ/USDA/glTF); extra: GIF/PNG-8 palette export, DXF up to 2018, layered PSD |
 | **Overall (weighted by use)** | | **~75%** | `.ai` and PDF dominate the weighting |