i18n: add Brazilian Portuguese interface (stacked on #34)

ATTRIBUTION.md

@@ -27,6 +27,8 @@ deck and UI icons are original work of the DeckCraft contributors (drawn or gene
 | `crates/media/tests/fixtures/tone*` (`tone.mp3`, `.m4a`, `.aac`, `.ogg`, `.opus`, `.flac`, `.wma`, `tone-alac.m4a`) | DeckCraft contributors | synthesised 0.5 s 440 Hz sine, encoded by `crates/media/tests/fixtures/make.sh` (ffmpeg as the encoder only) | CC0-1.0 | Audio decoding tests |
 | `crates/media/tests/fixtures/clip-*` (`clip-h264.mp4`, `clip-h264.mov`, `clip-hevc.mp4`, `clip-vp9.webm`, `clip-av1.mkv`) | DeckCraft contributors | 6 frames of a colour gradient generated by `make.sh` (python3), encoded by ffmpeg (x264 / x265 / libvpx / SVT-AV1 as encoders only) | CC0-1.0 | Video decoding tests |
 | `crates/media/tests/fixtures/make.sh` | DeckCraft contributors | this repository | MIT OR Apache-2.0 | Regenerates the media fixtures |
+| `crates/ui-egui/src/i18n/uk.tsv` | @dmatviichuk, assisted by Codex | Contributor-original Ukrainian translation in this repository; terminology checked against VESUM 6.8.6 and ULIF (validation tools/data are not bundled) | MIT OR Apache-2.0 (`LICENSE-MIT`, `LICENSE-APACHE`) | Ukrainian interface text |
+| `crates/ui-egui/src/i18n/pt-br.tsv` | @RicSchonfelder, AI-assisted | Contributor-original Brazilian Portuguese translation in this repository | MIT OR Apache-2.0 (`LICENSE-MIT`, `LICENSE-APACHE`) | Brazilian Portuguese interface text |
 
 ## Bundled through dependencies
 

ROADMAP.md

@@ -2,7 +2,7 @@
 
 **Stage: alpha** · next: beta, ~20 points and ~120–210 h away
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-10 · **Change:** minor (hours to ~95% per audience added; ready 56% → 55%; stage stays alpha; previous: major, full re-measure against PowerPoint for Mac 16.113.4; restructured to the craftrules progress-docs standard) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-12 · **Change:** minor (Brazilian Portuguese UI catalog added alongside Ukrainian) · **Target:** Microsoft PowerPoint for Mac 16.113 (Microsoft 365)
 
 DeckCraft aims at full PowerPoint parity, and to be better: faster, open (a documented zip+JSON
 format plus PPTX), scriptable by agents (CLI, JSON control channel, MCP), and available everywhere
@@ -84,7 +84,11 @@ EMF/SVG pictures, the data-loss and startup-crash bugs (#60, #40, #59) and the b
 
 ## Languages
 
-English only today; no string catalog yet (Ukrainian is in review as PR #34). Detail:
+English, Ukrainian and Brazilian Portuguese: Preferences offers System language, English,
+Українська and Português (Brasil). Matching OS/browser locales select a catalog automatically;
+explicit desktop choices persist in `ui.json`. Menus, ribbon, command palette, panels, dialogs and
+presenter controls use the interface catalog. Presentation content and command IDs retain their
+original values. Detail:
 [docs/localization-parity.md](docs/localization-parity.md).
 
 | Language | Code | UI strings | Status | Hours to full |
@@ -102,8 +106,9 @@ English only today; no string catalog yet (Ukrainian is in review as PR #34). De
 | Korean | ko | 0% | none | 4–7 |
 | Vietnamese | vi | 0% | none | 3–5 |
 
-Plus 8–14 h once for the catalog infrastructure. Other languages shipped: none. PowerPoint for Mac
-ships 26.
+Other languages shipped: **Ukrainian (uk) and Brazilian Portuguese (pt-BR)**, with English fallback
+and bundled glyph coverage. PowerPoint for Mac ships 26 languages; additional catalogs and native
+review remain.
 
 ## Upcoming
 
@@ -113,7 +118,7 @@ Ranked; detail and the full beta plan in [docs/roadmap.md](docs/roadmap.md).
    image paste (#53), editor soak tests. 10–20 h.
 2. **PPTX on real decks:** owned corpus, round-trip checks, fixes; #70, #74, #77; EMF/WMF and SVG.
    36–64 h.
-3. **Localization:** catalog, system language (#15), zh-Hans, es, fr, de, ja with IME. 27–46 h.
+3. **Localization:** additional catalogs for zh-Hans, es, fr, de, ja, native review and IME. 27–46 h.
 4. **Output:** vector PDF, printing. 10–16 h.
 5. **Depth that users hit:** font weights (#69), chart data and elements, Animation Pane timeline,
    presenter view on the right display, native macOS menu bar, Format Shape pane. 33–56 h.
@@ -128,6 +133,8 @@ app's JSON control channel (`deckcraft --control PORT`).
 
 | Date | What landed |
 |---|---|
+| 2026-10-12 | Brazilian Portuguese UI catalog (`pt-br.tsv`) added on the Ukrainian infrastructure |
+| 2026-10-10 | Ukrainian UI catalog, system-language detection and persisted language choice (#15, #30); translated placeholder prompts preserve presentation content |
 | 2026-10-10 | Progress docs restructured to the craftrules standard; full re-measure (breadth 79%, ready ~55%, mainstream ~53%, essentials ~62%, alpha). Landed: Animation Painter (#54), Morph geometry outlines (#27), animated GIF playback (#39), hyperlink colour and following links in the show (#37, #45), date fields in their own format (#36), flipped shapes keep readable text (#35), show transition fix (#46), start screen from the Home button (#49), MCP export lists PDF (#65), OmaStore manifest (#57) |
 | 2026-10-09 | v0.4.0 released. UAX #9 bidi and Arabic shaping (#4), Morph with Words and Characters (#5), tables grow to fit and PDF cell text (#14), rotating log file (#7), DX12 default on Windows (#16), H.264/HEVC overflow hardening (#2), PPTX sniffing anywhere in the zip (#19) |
 | 2026-10-08 | v0.2.0 and v0.3.0 released: Windows arm64, Flatpak aarch64, AppImage zsync updates, branded DMG |
@@ -139,6 +146,8 @@ app's JSON control channel (`deckcraft --control PORT`).
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-12 | minor | Recorded the Brazilian Portuguese catalog in the language summary |
+| 2026-10-10 | minor | Added Ukrainian UI and language selection to the reorganized language summary |
 | 2026-10-10 | minor | Readiness-by-audience table with hours to ~95% for full, mainstream and essentials |
 | 2026-10-10 | minor | Added mainstream practitioner (~53%) and essentials user (~62%); features recomputed from written area weights, ready ~56% → ~55% |
 | 2026-10-10 | minor | Stage checked against the new core-workflow gate: passes, stays alpha |

apps/deckcraft-web/Cargo.toml

@@ -27,4 +27,4 @@ rfd = { workspace = true }
 wasm-bindgen = "0.2"
 wasm-bindgen-futures = "0.4"
 js-sys = "0.3"
-web-sys = { version = "0.3", features = ["Window", "Document", "Element", "HtmlElement", "HtmlCanvasElement", "HtmlAnchorElement", "Blob", "BlobPropertyBag", "Url", "Location", "CssStyleDeclaration"] }
+web-sys = { version = "0.3", features = ["Window", "Navigator", "Document", "Element", "HtmlElement", "HtmlCanvasElement", "HtmlAnchorElement", "Blob", "BlobPropertyBag", "Url", "Location", "CssStyleDeclaration"] }

apps/deckcraft-web/src/web.rs

@@ -38,6 +38,7 @@ pub fn start() {
                     }
                     let inbox: Inbox = Inbox::default();
                     let mut app = SlideApp::new(Session::new(), services(inbox.clone(), cc.egui_ctx.clone()));
+                    app.services.system_locale = web_sys::window().and_then(|w| w.navigator().language());
                     let q = query();
                     if !q.contains("blank") {
                         if let Err(e) = deckcraft_engine::sample::open_sample(&mut app.session) {
@@ -111,10 +112,10 @@ fn services(inbox: Inbox, ctx: egui::Context) -> Services {
             let inbox = open_inbox.clone();
             let ctx = ctx.clone();
             let dialog = match purpose {
-                "picture" => rfd::AsyncFileDialog::new().add_filter("Pictures", PICTURE_EXTS),
-                "audio" => rfd::AsyncFileDialog::new().add_filter("Audio", AUDIO_EXTS),
-                "video" => rfd::AsyncFileDialog::new().add_filter("Video", VIDEO_EXTS),
-                _ => rfd::AsyncFileDialog::new().add_filter("Presentations", PRESENTATION_EXTS),
+                "picture" => rfd::AsyncFileDialog::new().add_filter(deckcraft_ui_egui::i18n::tr("Pictures"), PICTURE_EXTS),
+                "audio" => rfd::AsyncFileDialog::new().add_filter(deckcraft_ui_egui::i18n::tr("Audio"), AUDIO_EXTS),
+                "video" => rfd::AsyncFileDialog::new().add_filter(deckcraft_ui_egui::i18n::tr("Video"), VIDEO_EXTS),
+                _ => rfd::AsyncFileDialog::new().add_filter(deckcraft_ui_egui::i18n::tr("Presentations"), PRESENTATION_EXTS),
             };
             wasm_bindgen_futures::spawn_local(async move {
                 let Some(file) = dialog.pick_file().await else {

apps/deckcraft/Cargo.toml

@@ -11,6 +11,7 @@ default-run = "deckcraft"
 workspace = true
 
 [dependencies]
+sys-locale = "0.3.2"
 deckcraft-engine = { workspace = true }
 deckcraft-ui-egui = { workspace = true }
 deckcraft-media = { workspace = true }

apps/deckcraft/src/main.rs

@@ -91,20 +91,21 @@ fn save_prefs(app: &SlideApp) {
 
 fn services() -> Services {
     Services {
+        system_locale: sys_locale::get_locale(),
         pick_open: Some(Box::new(|purpose: &str| {
             let d = rfd::FileDialog::new();
             let d = match purpose {
-                "picture" => d.add_filter("Pictures", &["png", "jpg", "jpeg", "gif", "webp", "bmp", "tif", "tiff"]),
+                "picture" => d.add_filter(deckcraft_ui_egui::i18n::tr("Pictures"), &["png", "jpg", "jpeg", "gif", "webp", "bmp", "tif", "tiff"]),
                 "audio" => d.add_filter(
-                    "Audio",
+                    deckcraft_ui_egui::i18n::tr("Audio"),
                     &["wav", "mp3", "m4a", "m4b", "aac", "flac", "ogg", "oga", "opus", "aif", "aiff", "aifc", "caf", "wma", "weba", "mka"],
                 ),
-                "video" => d.add_filter("Video", &["mp4", "m4v", "mov", "webm", "mkv", "wmv"]),
+                "video" => d.add_filter(deckcraft_ui_egui::i18n::tr("Video"), &["mp4", "m4v", "mov", "webm", "mkv", "wmv"]),
                 _ => d
-                    .add_filter("Presentations", &["deckcraft", "pptx", "potx", "ppsx"])
+                    .add_filter(deckcraft_ui_egui::i18n::tr("Presentations"), &["deckcraft", "pptx", "potx", "ppsx"])
                     .add_filter("DeckCraft", &["deckcraft"])
                     .add_filter("PowerPoint", &["pptx", "potx", "ppsx"])
-                    .add_filter("Outline", &["txt", "md"]),
+                    .add_filter(deckcraft_ui_egui::i18n::tr("Outline"), &["txt", "md"]),
             };
             d.pick_file().map(|p| p.to_string_lossy().to_string())
         })),
@@ -205,7 +206,8 @@ fn main() -> eframe::Result {
                 if let Ok(v) = app.session.execute("file.recovery.open", &serde_json::json!({}))
                     && let Some(n) = v.get("opened").and_then(|o| o.as_array()).map(Vec::len).filter(|n| *n > 0)
                 {
-                    app.set_status(format!("Recovered {n} unsaved presentation{} from the last session", if n == 1 { "" } else { "s" }));
+                    deckcraft_ui_egui::i18n::set_current(app.ui.interface_language.resolve(app.services.system_locale.as_deref()));
+                    app.set_status(deckcraft_ui_egui::i18n::recovered(n));
                 }
             }
             app.integrated_titlebar = cfg!(target_os = "macos");

crates/render/src/lib.rs

@@ -138,6 +138,8 @@ pub struct RenderOpts<'a> {
     pub scale: f64,
     /// Editor view: placeholder prompts and dashed placeholder outlines.
     pub edit: bool,
+    /// Optional interface prompt provider; custom layout prompts and document text stay intact.
+    pub placeholder_prompt: Option<fn(PhType) -> &'static str>,
     /// Draw shapes marked hidden (Selection pane) — the editor hides them like the show does.
     pub show_hidden: bool,
     /// Per-shape animation state.
@@ -166,6 +168,7 @@ impl Default for RenderOpts<'_> {
         RenderOpts {
             scale: 1.0,
             edit: false,
+            placeholder_prompt: None,
             show_hidden: false,
             state: None,
             skip: &[],
@@ -773,7 +776,7 @@ impl Renderer {
                 draw_layout_with(ctx, &l, tr, m, &st.paras);
             } else if f.opts.edit && s.ph.is_some() {
                 let kind = s.ph_type().unwrap_or(PhType::Body);
-                let prompt_body = prompt_body(rctx, s, kind);
+                let prompt_body = prompt_body(rctx, s, kind, f.opts.placeholder_prompt.map(|prompt| prompt(kind)));
                 if !prompt_body.is_empty() {
                     let grey = Rgba::rgb(0x59, 0x59, 0x59);
                     draw_text(ctx, rctx, s, &prompt_body, tr, m, &f.fields, Some(grey));
@@ -1009,7 +1012,7 @@ fn arrowheads(ctx: &mut RenderContext, rctx: &Ctx, line: &Line, ph: Option<Rgba>
 }
 
 /// The prompt shown in an empty placeholder, formatted like its content would be.
-fn prompt_body(rctx: &Ctx, s: &Shape, kind: PhType) -> TextBody {
+fn prompt_body(rctx: &Ctx, s: &Shape, kind: PhType, interface_prompt: Option<&str>) -> TextBody {
     // Layout/master prompt text when the layout supplies a custom one.
     let (lp, _) = resolve::parents(rctx, s);
     let custom = lp.and_then(|l| l.ph.as_ref().filter(|p| p.has_custom_prompt).and(l.text.as_ref())).filter(|t| !t.is_empty());
@@ -1019,7 +1022,7 @@ fn prompt_body(rctx: &Ctx, s: &Shape, kind: PhType) -> TextBody {
     if matches!(rctx.owner, resolve::Owner::Layout | resolve::Owner::Master) {
         return TextBody::default();
     }
-    let txt = kind.prompt();
+    let txt = interface_prompt.unwrap_or_else(|| kind.prompt());
     if txt.is_empty() || kind.is_footer_kind() {
         return TextBody::default();
     }

crates/render/src/tests.rs

@@ -523,3 +523,25 @@ fn hyperlinks_draw_in_the_hyperlink_colour_underlined() {
     let own = px(&run_deck(RunProps { link, fill: red.clone(), ..Default::default() }));
     assert_eq!(diff(&own, &px(&run_deck(RunProps { fill: red, underline: Some("sng".into()), ..Default::default() }))), 0);
 }
+
+#[test]
+fn interface_placeholder_prompts_preserve_custom_prompts_and_document_data() {
+    let mut p = Presentation::default();
+    let slide = p.slides.first().unwrap();
+    let shape = slide.shapes.iter().find(|shape| shape.ph_type() == Some(PhType::Title) || shape.ph_type() == Some(PhType::CtrTitle)).unwrap();
+    let c = Ctx::for_slide(&p, slide).unwrap();
+    let before = p.clone();
+    assert_eq!(prompt_body(&c, shape, PhType::Title, Some("Натисніть, щоб додати заголовок")).text(), "Натисніть, щоб додати заголовок");
+    assert_eq!(p, before);
+
+    let layout_id = slide.layout;
+    let master = Arc::make_mut(p.masters.first_mut().unwrap());
+    let layout = master.layouts.iter_mut().find(|layout| layout.id == layout_id).unwrap();
+    let shape = layout.shapes.iter_mut().find(|shape| shape.ph_type() == Some(PhType::Title) || shape.ph_type() == Some(PhType::CtrTitle)).unwrap();
+    shape.ph.as_mut().unwrap().has_custom_prompt = true;
+    shape.text = Some(TextBody::from_text("Click to add title"));
+    let slide = p.slides.first().unwrap();
+    let shape = slide.shapes.iter().find(|shape| shape.ph_type() == Some(PhType::Title) || shape.ph_type() == Some(PhType::CtrTitle)).unwrap();
+    let c = Ctx::for_slide(&p, slide).unwrap();
+    assert_eq!(prompt_body(&c, shape, PhType::Title, Some("Натисніть, щоб додати заголовок")).text(), "Click to add title");
+}