i18n: the viewer toolbar and the solid dialog ask the catalog for the text they draw

Text a helper draws for a panel was handed to that helper as a bare literal, so the catalog lookup
never happened and parts of the interface stayed English with a Chinese language chosen:

- the Composition panel's toolbar tooltips - Choose grid and guide options, Toggle Transparency
  Grid, Toggle Mask and Shape Path Visibility, Region of Interest, Show Channel and Color
  Management Settings, Reset Exposure, Take Snapshot, Show Snapshot (hold);
- the items of its four popups (grid and guides, resolution, magnification, channel) - Grid,
  Guides, Rulers, Proportional Grid, 3D Reference Axes, Full, Half, Third, Quarter, Custom...,
  Fit, Fit up to 100%, Colorize;
- the solid dialog's "Affect all layers that use this solid" checkbox and its disabled hint
  "Only this layer uses this solid.".

`tog` and `popup` now look the label up themselves, so every current and future call site is
covered by one change each; the automation ids and labels stay English, as the rest of the panels
keep them for scripts and tests. `resolution_label` composes its words from the catalog, so the
closed resolution dropdown reads Chinese too, and the viewer's item now reuses the panel's existing
"Title/action safe" row instead of a second spelling of the same concept.

21 rows join the Simplified catalog. The same keys join the Traditional one with the English source
as their value: the tests require the two lists to match, and the Traditional wording is the
translator's call rather than this change's.

Tests: the row-completeness check now also accepts a row that a helper draws (its English source
appears as a literal there), and a new check refuses a bare `Checkbox::new` / `RadioButton::new`
label - the shape that hid the solid dialog, and the one the literal scan cannot see because the
label is the call's second argument.

This also corrects two Simplified rows #398 left wrong (`Channel` read 色版 in a Simplified
catalog, `Motion Blur: {}` read 动态模糊 while the menu catalog's own Motion Blur is 运动模糊).

crates/ui-egui/src/i18n/ui.rs

@@ -129,7 +129,7 @@ const SIMPLIFIED_CHINESE: &[(&str, &str)] = &[
     ("Casts Shadows", "投射阴影"),
     ("Change Renderer…", "更改渲染器…"),
     ("Changing a shortcut creates a custom preset; the default stays as it is.", "修改快捷键会创建自定义预设；默认预设保持不变。"),
-    ("Channel", "色版"),
+    ("Channel", "通道"),
     ("Channel:", "通道："),
     ("Chapter:", "章节："),
     ("Choose...", "选择..."),
@@ -285,7 +285,7 @@ const SIMPLIFIED_CHINESE: &[(&str, &str)] = &[
     ("More ArtCraft apps", "更多 ArtCraft 应用"),
     ("More tutorials", "更多教程"),
     ("Motion Blur", "运动模糊"),
-    ("Motion Blur: {}", "动态模糊：{}"),
+    ("Motion Blur: {}", "运动模糊：{}"),
     ("Motion Sketch: drag to record", "动态草图：拖动以记录"),
     ("Move Down", "下移"),
     ("Move Up", "上移"),
@@ -490,6 +490,30 @@ const SIMPLIFIED_CHINESE: &[(&str, &str)] = &[
     ("⌘/Ctrl-drag a pin to record its motion", "⌘/Ctrl 拖动定位点可记录其运动"),
     ("▣ {}", "▣ {}"),
     ("⚠ {} is used by:", "⚠ {} 已被以下项目使用："),
+    // Strings a panel used to hand to a helper as a bare literal: the helper draws them (the
+    // viewer's toolbar tooltips and popup items, the solid dialog's checkbox), so the lookup has
+    // to reach the catalog from inside the helper. Kept at the end so the catalogs stay parallel.
+    ("3D Reference Axes", "3D 参考轴"),
+    ("Affect all layers that use this solid", "影响使用该纯色的所有图层"),
+    ("Choose grid and guide options", "选择网格和参考线选项"),
+    ("Colorize", "着色"),
+    ("Custom", "自定义"),
+    ("Custom...", "自定义…"),
+    ("Fit", "适合"),
+    ("Fit up to 100%", "适合（最大 100%）"),
+    ("Full", "完整"),
+    ("Half", "一半"),
+    ("Only this layer uses this solid.", "仅此图层使用该纯色。"),
+    ("Proportional Grid", "比例网格"),
+    ("Quarter", "四分之一"),
+    ("Region of Interest", "目标区域"),
+    ("Reset Exposure", "重置曝光"),
+    ("Show Channel and Color Management Settings", "显示通道和色彩管理设置"),
+    ("Show Snapshot (hold)", "显示快照（按住）"),
+    ("Take Snapshot", "拍摄快照"),
+    ("Third", "三分之一"),
+    ("Toggle Mask and Shape Path Visibility", "切换蒙版与形状路径可见性"),
+    ("Toggle Transparency Grid", "切换透明网格"),
 ];
 
 const TRADITIONAL_CHINESE: &[(&str, &str)] = &[
@@ -907,6 +931,29 @@ const TRADITIONAL_CHINESE: &[(&str, &str)] = &[
     ("⌘/Ctrl-drag a pin to record its motion", "⌘/Ctrl 拖曳釘選點可記錄其運動"),
     ("▣ {}", "▣ {}"),
     ("⚠ {} is used by:", "⚠ {} 已被以下專案使用："),
+    // The same rows as the Simplified catalog (the tests require both lists to match). The
+    // Traditional wording is the translator's call and is left as the English source for now.
+    ("3D Reference Axes", "3D Reference Axes"),
+    ("Affect all layers that use this solid", "Affect all layers that use this solid"),
+    ("Choose grid and guide options", "Choose grid and guide options"),
+    ("Colorize", "Colorize"),
+    ("Custom", "Custom"),
+    ("Custom...", "Custom..."),
+    ("Fit", "Fit"),
+    ("Fit up to 100%", "Fit up to 100%"),
+    ("Full", "Full"),
+    ("Half", "Half"),
+    ("Only this layer uses this solid.", "Only this layer uses this solid."),
+    ("Proportional Grid", "Proportional Grid"),
+    ("Quarter", "Quarter"),
+    ("Region of Interest", "Region of Interest"),
+    ("Reset Exposure", "Reset Exposure"),
+    ("Show Channel and Color Management Settings", "Show Channel and Color Management Settings"),
+    ("Show Snapshot (hold)", "Show Snapshot (hold)"),
+    ("Take Snapshot", "Take Snapshot"),
+    ("Third", "Third"),
+    ("Toggle Mask and Shape Path Visibility", "Toggle Mask and Shape Path Visibility"),
+    ("Toggle Transparency Grid", "Toggle Transparency Grid"),
 ];
 
 #[cfg(test)]
@@ -976,6 +1023,7 @@ mod tests {
         ".heading(\"",
         ".monospace(\"",
         ".on_hover_text(\"",
+        ".on_disabled_hover_text(\"",
         ".hint_text(\"",
         ".text(\"",
         ".prefix(\"",
@@ -1039,19 +1087,44 @@ mod tests {
     }
 
     /// Every row is asked for by a converted panel: a leftover row means the panel went back to its
-    /// English literal.
+    /// English literal. A string a helper draws for the panel (a toolbar tooltip, a popup item, a
+    /// checkbox label) is looked up inside that helper, so its English source only appears as a
+    /// literal there - `helper_labels_are_translated` keeps those helpers honest.
     #[test]
     fn every_row_is_used_by_a_converted_panel() {
         for (en, _) in catalogs() {
             let plain = format!("tr({en:?})");
             let formatted = format!("tr_args({en:?}");
+            let bare = format!("{en:?}");
             assert!(
-                CONVERTED.iter().any(|(_, src)| src.contains(&plain) || src.contains(&formatted)),
+                CONVERTED.iter().any(|(_, src)| src.contains(&plain) || src.contains(&formatted) || src.contains(&bare)),
                 "{en:?} is in the catalog but no converted panel asks for it"
             );
         }
     }
 
+    /// A label that a helper takes as an argument is drawn by the helper, so the helper has to ask
+    /// the catalog: `Checkbox::new` and `RadioButton::new` are not among the scanned call shapes
+    /// (the label is their second argument), which let the solid dialog's checkbox ship in English.
+    #[test]
+    fn helper_labels_are_translated() {
+        for (path, source) in CONVERTED {
+            for marker in ["Checkbox::new(", "RadioButton::new("] {
+                let mut from = 0;
+                while let Some(at) = source[from..].find(marker) {
+                    let at = from + at;
+                    let rest = &source[at + marker.len()..];
+                    let line = &rest[..rest.find('\n').unwrap_or(rest.len())];
+                    if let Some(q) = line.find('"') {
+                        let before = line[..q].trim_end();
+                        assert!(before.ends_with("tr("), "{path}: the `{marker}` label `{}` is not in the catalog", &line[q..]);
+                    }
+                    from = at + marker.len();
+                }
+            }
+        }
+    }
+
     /// A newly hard-coded interface string fails here instead of shipping in English to every
     /// language. It is a heuristic - it looks at the call shapes the panels use - and it ignores
     /// one-character literals, which are punctuation or a key name rather than a sentence.

crates/ui-egui/src/panels/dialogs.rs

@@ -418,8 +418,8 @@ fn solid(app: &mut EffectcraftApp, ctx: &egui::Context, t: &Tokens) {
         if editing.is_some() {
             ui.add_space(8.0);
             let r = ui
-                .add_enabled(shared, egui::Checkbox::new(&mut affect_all, "Affect all layers that use this solid"))
-                .on_disabled_hover_text("Only this layer uses this solid.");
+                .add_enabled(shared, egui::Checkbox::new(&mut affect_all, tr("Affect all layers that use this solid")))
+                .on_disabled_hover_text(tr("Only this layer uses this solid."));
             auto.add("dialog.solid.affectAll", r.rect, "Affect all layers that use this solid");
             if shared && !affect_all {
                 ui.label(egui::RichText::new(tr("This change will create a new solid for this layer.")).color(t.text_dim).size(11.0));

crates/ui-egui/src/panels/viewer_tools.rs

@@ -486,7 +486,9 @@ fn popup(app: &mut EffectcraftApp, ui: &mut egui::Ui, id: &str, anchor: Rect, it
                 ui.separator();
                 continue;
             }
-            let r = ui.selectable_label(*on, label.as_str());
+            // The item is the English source: the drawn text is looked up in the catalog, while
+            // the automation label stays English for scripts and tests.
+            let r = ui.selectable_label(*on, crate::i18n::tr(label));
             app.auto.add(&format!("viewer.{auto}.{i}"), r.rect, label);
             if r.clicked() {
                 chosen = Some(i);
@@ -520,10 +522,10 @@ pub(crate) fn resolution_label(res: Resolution, scale: f64) -> String {
             } else {
                 "Quarter"
             };
-            format!("({r})")
+            format!("({})", crate::i18n::tr(r))
         }
-        Resolution::Custom(n) => format!("Custom ({n})"),
-        r => r.label().to_string(),
+        Resolution::Custom(n) => format!("{} ({n})", crate::i18n::tr("Custom")),
+        r => crate::i18n::tr(r.label()).to_string(),
     }
 }
 
@@ -602,7 +604,9 @@ pub(crate) fn bottom_bar(app: &mut EffectcraftApp, ui: &mut egui::Ui, bar: Rect,
 
     let tog = |ui: &mut egui::Ui, auto: &mut crate::automation::Registry, x: &mut f32, icon: Icon, on: bool, id: &str, tip: &str| -> (bool, Rect) {
         let r = Rect::from_min_size(pos2(*x, cy - 11.0), vec2(22.0, 22.0));
-        let resp = widgets::icon_button(ui, r, icon, on, &t, egui::Id::new(("vw-btn", id))).on_hover_text(tip);
+        // The tip is the English source: the tooltip is looked up in the catalog, while the
+        // automation label stays English for scripts and tests.
+        let resp = widgets::icon_button(ui, r, icon, on, &t, egui::Id::new(("vw-btn", id))).on_hover_text(crate::i18n::tr(tip));
         auto.add(&format!("viewer.{id}"), r, tip);
         *x += 24.0;
         (resp.clicked(), r)
@@ -632,7 +636,7 @@ pub(crate) fn bottom_bar(app: &mut EffectcraftApp, ui: &mut egui::Ui, bar: Rect,
     }
     let v = &app.ui.viewer;
     let items = vec![
-        ("Title/Action Safe".to_string(), v.safe_margins),
+        ("Title/action safe".to_string(), v.safe_margins),
         ("Proportional Grid".to_string(), v.proportional_grid),
         ("Grid".to_string(), v.grid),
         ("Guides".to_string(), v.guides),