i18n: Vietnamese translates 115 status and error messages it lacked

vi.tsv gets an @msg row for each of the 115 status and error messages
that the untranslated report listed as missing from every
complete-message catalog and that no open pull request adds to
Vietnamese. Among them are the image export, color profile, color
book, swatch exchange file, swatch library, DXF and DWG import, 3D and
Revolve errors, the zip, regular expression and script file errors,
and the `index` whole-number error. Placeholders, backticked names,
parameter values and limits stay as the English writes them.

Docs: the Vietnamese row of docs/localization-parity.md and a line in
docs/target-app-parity.md give the new counts.

docs/localization-parity.md

@@ -40,7 +40,7 @@ Chinese by `imachus`). Georgian and the original Gujarati catalog are recorded a
 | Japanese | `ja` | 4,004 / 4,020 (99.6%) | all | CJK UI font as above; Japanese IME; vertical type partial; Japanese crop marks and composition settings | no | full | — (review) |
 | German | `de` | 3,952 / 4,020 (98%; menus, literals and messages complete when counted) | all (3,433 `@msg` and 48 `@msgplural` rows, counted 2026-11-13: the untranslated report lists 48 missing messages for it) | Latin | contributor-written, not reviewed | full | — (review) |
 | Korean | `ko` | 4,870 rows (counted 2026-10-21): menus, `tl!` literals and messages complete when counted; one plural form | all (3,438 `@msg` and 48 `@msgplural` rows, counted 2026-11-13: the untranslated report lists 39 missing messages for it) | Hangul from an installed system font on the desktop (Apple SD Gothic Neo, Malgun Gothic, Noto Sans CJK KR…); the web build has no Korean UI font yet (craft-fonts); IME path exists | no (AI-drafted) | full | — (review; web font) |
-| Vietnamese | `vi` | 4,886 rows (counted 2026-10-21): menus, `tl!` literals and messages complete when counted; one plural form; 4,046 plain + 18 `@plural` + 28 contextual + 794 `@msg` | all | Latin with Vietnamese diacritics (stacked marks attach in precomposed, decomposed and keyboard forms, #4491; glyph tests pass) | contributor is a Vietnamese speaker; AI-assisted draft, further native review welcome | full | — (review) |
+| Vietnamese | `vi` | 4,886 rows (counted 2026-10-21): menus, `tl!` literals and messages complete when counted; one plural form; 4,046 plain + 18 `@plural` + 28 contextual + 794 `@msg` | all (1,746 `@msg` and 48 `@msgplural` rows, counted 2026-11-14: the untranslated report lists 1,868 messages without a Vietnamese row, 53 of which open #7211, #7378, #7405 and #7434 translate) | Latin with Vietnamese diacritics (stacked marks attach in precomposed, decomposed and keyboard forms, #4491; glyph tests pass) | contributor is a Vietnamese speaker; AI-assisted draft, further native review welcome | full | — (review) |
 
 **Historical 12-language score: ~82%** (equal weights: 100 + 85 + 100 + 0 + 0 + 100 + 100 + 100 + 100 + 98 + 100 + 100, over 12).
 **To `full` for all twelve: ~50–85 h** (historical estimate, not re-scored here). Hindi now has

docs/target-app-parity.md

@@ -915,6 +915,7 @@ Moved from the ROADMAP's "Shipped so far" on 2026-10-10. Update it when a featur
   - The History panel translates the undo step names the engine, the tools and the shell write as literals: the untranslated report (`untranslated_report`) lists any a complete catalog lacks, and a step whose catalog row exists only with an ellipsis (such as an effect's menu name) shows that row without the ellipsis.
   - The German catalog (`crates/ui-egui/src/i18n/de.tsv`) has an `@msg` row for the status and error messages the untranslated report (`untranslated_report`) finds in the sources, 3,433 `@msg` rows in all: the errors of commands, scripts, file import and export and plug-ins. The report lists 48 German messages; 38 of them are the composite font, select-a-path and justification order errors that open #7211, #7214 and #7116 translate. A message with two placeholders in a row (`Template::parse` in `crates/ui-egui/src/i18n/catalog.rs`) is still shown in English.
   - The Korean catalog (`crates/ui-egui/src/i18n/ko.tsv`) has an `@msg` row for the status and error messages the untranslated report (`untranslated_report`) finds in the sources, 3,438 `@msg` rows in all: the errors of commands, scripts, file import and export and plug-ins. The report lists 39 Korean messages; they are the composite font, select-a-path, justification order and `path.freehand` connect errors that open #7211, #7214, #7116 and #7330 translate. A message with two placeholders in a row (`Template::parse` in `crates/ui-egui/src/i18n/catalog.rs`) is still shown in English.
+  - The Vietnamese catalog (`crates/ui-egui/src/i18n/vi.tsv`) has an `@msg` row for 115 of the status and error messages that the untranslated report listed for every complete-message catalog, among them the image export, color profile, color book, swatch exchange file, swatch library, DXF and DWG import, 3D and Revolve errors and the `index` whole-number error, 1,746 `@msg` rows in all. The untranslated report (`untranslated_report`) lists 1,868 Vietnamese messages without a row; open #7211, #7378, #7405 and #7434 translate 53 of them.
   - The History panel menu has Step Backward and Step Forward, which run Edit › Undo and Edit › Redo and are disabled when there is no step to undo or redo, and Set History Limit…, which opens Preferences at Performance, where History States is set.
   - The History panel menu's Clear History (`edit.clearHistory`) removes every step to undo and to redo and leaves the document as it is; it is not an undo step itself, and it is disabled when there is no step to clear.
   - The New Document from State button at the bottom of the History panel (`edit.newDocumentFromState`) makes a new document, which becomes active, from the state the panel has selected ([public source](https://helpx.adobe.com/illustrator/desktop/get-started/learn-the-basics/undo-edits-and-manage-design-history.html)). VectorCraft's own rules: the new document takes the next Untitled-N name, is marked unsaved, has nothing selected and has no steps to undo or redo, and the source document and its steps stay as they are.