i18n: add Polish (pl) interface

ROADMAP.md

@@ -111,7 +111,7 @@ Localized German formulas and numbers are in PR #163. Detail: [localization-pari
 | Korean | ko | menus only | ~12% |
 | Vietnamese | vi | none | 0% |
 
-Other shipped languages: 2 (Russian and German, menus only, ~12%).
+Other shipped languages: 3 (Russian, German and Polish, menus only, ~12%).
 
 ## Upcoming
 

crates/ui-egui/examples/snapshot.rs

@@ -1,7 +1,7 @@
 //! Renders the whole GridCraft window offscreen (wgpu, no window) to a PNG.
 //!
 //! `cargo run --release -p gridcraft-ui-egui --example snapshot -- [--sample sales] [--in file.xlsx]
-//!  [--size 1440x900] [--scale 2] [--cmd 'id={json}']... [--tab Insert] [--dark] [--language en|zh|ja|ko|ru|pt|cs]
+//!  [--size 1440x900] [--scale 2] [--cmd 'id={json}']... [--tab Insert] [--dark] [--language en|zh|ja|ko|ru|pt|cs|pl]
 //!  [--dialog 'name={json}'] [--hf-edit header|footer] out.png`
 
 use gridcraft_engine::Session;

crates/ui-egui/src/control.rs

@@ -195,7 +195,11 @@ pub fn handle(app: &mut SheetApp, ctx: &egui::Context, method: &str, p: &Json) -
                     "Submit Print Job",
                     "existing file.print sheet/pagination params → {printing,bytes,pending}; submits without opening a dialog",
                 ),
-                ("app.language.set", "Interface Language", "{language: \"en\"|\"zh\"|\"ja\"|\"ko\"|\"ru\"|\"pt\"|\"de\"|\"cs\"} (alias: code)"),
+                (
+                    "app.language.set",
+                    "Interface Language",
+                    "{language: \"en\"|\"zh\"|\"ja\"|\"ko\"|\"ru\"|\"pt\"|\"de\"|\"cs\"|\"pl\"} (alias: code)",
+                ),
                 ("app.language.english", "Interface Language: English", ""),
                 ("app.language.japanese", "Interface Language: Japanese", ""),
             ] {

crates/ui-egui/src/i18n.rs

@@ -14,6 +14,7 @@ mod de;
 mod es;
 mod fr;
 mod ko;
+mod pl;
 mod pt;
 mod ru;
 mod sr;
@@ -35,10 +36,12 @@ pub enum Language {
     Cs,
     Fr,
     Sr,
+    Pl,
 }
 
 impl Language {
-    pub const ALL: [Self; 11] = [Self::En, Self::Es, Self::Zh, Self::Ja, Self::Ko, Self::Ru, Self::PtBr, Self::De, Self::Cs, Self::Fr, Self::Sr];
+    pub const ALL: [Self; 12] =
+        [Self::En, Self::Es, Self::Zh, Self::Ja, Self::Ko, Self::Ru, Self::PtBr, Self::De, Self::Cs, Self::Fr, Self::Sr, Self::Pl];
 
     /// The language's own name, shown in the switcher.
     pub fn name(self) -> &'static str {
@@ -54,6 +57,7 @@ impl Language {
             Self::Cs => "Čeština",
             Self::Fr => "Français",
             Self::Sr => "Srpski",
+            Self::Pl => "Polski",
         }
     }
 
@@ -71,6 +75,7 @@ impl Language {
             Self::Cs => "cs",
             Self::Fr => "fr",
             Self::Sr => "sr",
+            Self::Pl => "pl",
         }
     }
 
@@ -91,6 +96,7 @@ impl Language {
             "cs" => Some(Self::Cs),
             "fr" => Some(Self::Fr),
             "sr" => Some(Self::Sr),
+            "pl" => Some(Self::Pl),
             _ => None,
         }
     }
@@ -129,6 +135,7 @@ impl Language {
             Self::Cs => cs::translate(text),
             Self::Fr => fr::translate(text),
             Self::Sr => sr::translate(text),
+            Self::Pl => pl::translate(text),
         };
         translated.unwrap_or_else(|| text.rsplit_once('|').map_or(text, |(_, label)| label))
     }
@@ -611,6 +618,7 @@ mod tests {
             assert!(cs::translate(english).is_some_and(|text| !text.is_empty()), "missing Czech: {english}");
             assert!(fr::translate(english).is_some_and(|text| !text.is_empty()), "missing French: {english}");
             assert!(sr::translate(english).is_some_and(|text| !text.is_empty()), "missing Serbian: {english}");
+            assert!(pl::translate(english).is_some_and(|text| !text.is_empty()), "missing Polish: {english}");
         }
         assert_eq!(Language::Ja.tr("Data"), "データ");
         assert_eq!(Language::Zh.tr("Data"), "数据");
@@ -624,6 +632,8 @@ mod tests {
         assert_eq!(Language::De.tr("Sheet1!A1"), "Sheet1!A1");
         assert_eq!(Language::Fr.tr("Data"), "Données");
         assert_eq!(Language::Fr.tr("Sheet1!A1"), "Sheet1!A1");
+        assert_eq!(Language::Pl.tr("Data"), "Dane");
+        assert_eq!(Language::Pl.tr("Sheet1!A1"), "Sheet1!A1");
         assert_eq!(Language::PtBr.tr("Date"), "Data");
         assert_eq!(Language::PtBr.tr("Sheet1!A1"), "Sheet1!A1");
         assert_eq!(Language::Ja.tr("Sheet1!A1"), "Sheet1!A1");
@@ -644,6 +654,8 @@ mod tests {
         assert_eq!(Language::Sr.tr("Sheet1!A1"), "Sheet1!A1");
         assert_eq!(Language::Sr.tr("Page Layout|Orientation"), "Orijentacija");
         assert_eq!(Language::Sr.tr("Orientation"), "Orijentacija");
+        assert_eq!(Language::Pl.tr("Page Layout|Orientation"), "Orientacja");
+        assert_eq!(Language::Pl.tr("Orientation"), "Kierunek tekstu");
         assert_eq!(Language::parse("xx"), None);
     }
 
@@ -738,6 +750,9 @@ mod tests {
         assert_eq!(Language::from_tag("sr-Latn-RS"), Some(Language::Sr));
         assert_eq!(Language::from_tag("sr-RS"), Some(Language::Sr));
         assert_eq!(Language::parse("sr"), Some(Language::Sr));
+        assert_eq!(Language::from_tag("pl-PL"), Some(Language::Pl));
+        assert_eq!(Language::from_tag("pl_PL.UTF-8"), Some(Language::Pl));
+        assert_eq!(Language::parse("pl"), Some(Language::Pl));
     }
 
     #[test]