Swedish interface translation (sv)

Adds Swedish (Svenska) as an interface language: 4770 strings, written from the English source.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/development.md

@@ -202,7 +202,8 @@ complete; `it-IT`, `it-CH` and every other `it-*` locale resolve to it), Russian
 locale such as `ru-RU`, `ru-BY` or `ru-KZ` resolves to it), Ukrainian (`uk`, complete; `uk-UA`,
 `uk_UA.UTF-8` and every other `uk-*` locale resolve to it; integer plurals use one/few/many), Hungarian (`hu`, complete;
 `hu-HU` and every other `hu-*` locale resolve to it; a count takes the singular, so plurals have one form), Polish (`pl`, complete; `pl-PL` and every other `pl-*`
-locale resolve to it; plurals use one/few/many, with 21, 31 … taking many), Czech (`cs`, every menu label) and Brazilian Portuguese
+locale resolve to it; plurals use one/few/many, with 21, 31 … taking many), Swedish (`sv`, complete; `sv-SE`, `sv-FI` and every
+other `sv-*` locale resolve to it), Czech (`cs`, every menu label) and Brazilian Portuguese
 (`pt-br`, complete; `pt-BR`, `pt_BR.UTF-8` and other tags that resolve to `pt-br` through `candidates`). Untranslated text falls back to English until its rows are added.
 
 - `tl!("…")` translates a literal into the language the UI is drawn in; `i18n::t(s)` is the same for a
@@ -230,7 +231,7 @@ locale resolve to it; plurals use one/few/many, with 21, 31 … taking many), Cz
   control channel, MCP and tests read them) and are translated only where the status bar draws them
   (`i18n::msg`). `@msg` catalog rows hold a whole message or a template such as
   `Couldn't open {name}: {e}`; `{_1}`, `{_2}` … stand for the format string's `{}`, and the values in the
-  placeholders are translated in turn (the reason after `: {e}` is often a message too). Czech, German, Spanish, French, Hungarian, Italian, Japanese, Korean, Polish, Brazilian Portuguese, Russian, Ukrainian and Vietnamese cover every
+  placeholders are translated in turn (the reason after `: {e}` is often a message too). Czech, German, Spanish, French, Hungarian, Italian, Japanese, Korean, Polish, Brazilian Portuguese, Russian, Swedish, Ukrainian and Vietnamese cover every
   message literal the test scan finds (`complete_languages_translate_every_message`, languages listed in
   `COMPLETE_MESSAGES`): a new `Err("…")`, `Other(…)`, `#[error(…)]` or `status(…)` message needs a row in each of those catalogs (`VECTORCRAFT_I18N_DUMP_MESSAGES=messages.txt cargo test -p vectorcraft-ui-egui
   complete_languages_translate_every_message` lists them all). Other languages show messages in English

docs/localization-parity.md

@@ -1,6 +1,6 @@
 # Localization parity
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-14 · **Change:** minor (Brazilian Portuguese (`pt-br`) catalog completed under the tests: menus, `tl!` literals and messages; 12-language score 71% → 74%; #1914) · **Target:** Adobe Illustrator 2026 (30.x)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-15 · **Change:** minor (Swedish (`sv`) catalog added, complete under the tests; scores and estimates unchanged; Brazilian Portuguese (`pt-br`) catalog completed under the tests: menus, `tl!` literals and messages; 12-language score 71% → 74%; #1914) · **Target:** Adobe Illustrator 2026 (30.x)
 
 Per-language status of VectorCraft's interface. How the catalogs work and how to add a language:
 [`development.md` › Localisation](development.md#localisation). Part of
@@ -52,8 +52,9 @@ plus review. Native-speaker review is human work and isn't in the hours.
 | Hungarian | `hu` | 4,524 rows: menus, `tl!` literals and messages complete (tests); one plural form | full |
 | Polish | `pl` | 4,510 rows (counted 2026-10-13): menus, `tl!` literals and messages complete (tests); one/few/many plurals | full; native review pending |
 | Czech | `cs` | 4,411 catalog entries, including 636 `@msg` rows (measured locally 2026-10-11); menu, literal and message coverage enforced by tests | catalog complete; render-site gaps reduced; native review pending |
+| Swedish | `sv` | 4,770 rows, 668 of them `@msg` (counted 2026-10-15): menus, `tl!` literals and messages complete (tests); one/other plurals | full; native review welcome |
 
-Fifteen non-English catalogs in all. Illustrator, as its public documentation lists, ships around two dozen
+Sixteen non-English catalogs in all. Illustrator, as its public documentation lists, ships around two dozen
 interface languages (including Polish, Dutch, Turkish, the Nordic languages, Hungarian, and Middle East
 editions with Arabic and Hebrew); it doesn't ship Hindi, Indonesian or Vietnamese.
 
@@ -80,6 +81,7 @@ font for the web build.
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-15 | minor | Swedish (`sv`) catalog added, complete under the tests (menus, literals, messages; one/other plurals); every `sv-*` locale resolves to it; AI-drafted, native review welcome; scores and estimates unchanged |
 | 2026-10-14 | minor | Brazilian Portuguese (`pt-br`, #1914): catalog completed under the tests (menus, literals, messages); 12-language score 71% → 74%, hours 55–90 → 50–85 |
 | 2026-10-13 | minor | The Polish translator confirmed the Polish rows the maintainers had added after the catalog was written (#1614); Tool flyouts are as wide as their longest translated name and shortcut need, so names no longer run into shortcuts in Spanish and other languages (#1650, fixes #1616); scores and estimates unchanged |
 | 2026-10-13 | minor | Polish (`pl`, #1498): the row count is corrected to the 4,510 rows in `pl.tsv` (it said 4,492), 654 of them `@msg` rows; AI-drafted, native review pending; scores and estimates unchanged |