Merge remote-tracking branch 'origin/main' into docs/community-rows-478

# Conflicts:
#	ROADMAP.md

ROADMAP.md

@@ -2,7 +2,7 @@
 
 **Stage: alpha** · next: beta, ~26 points and ~162–292 h away (one Opus 5.5 agent; ~33–67 h wall-clock with 5 agents)
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-15 · **Change:** minor (Typography spacing icons support scrubbing (#373); system theme on first run; recent files as cards with thumbnails on the home screen; community fixes: lost images reported on loading (#207), SVG import budgets (#190), Leptos code (#223), full screen (#227), server snapshots readable again (#188), owner-only preferences (#200), ruzstd 0.9.1 (#182), layer cycle repair (#205), batch rollback, Direct3D 12 on Windows, plugin metering (#192); vector edit mode regions: hover hatch, selection and drag; SVG/PDF exports refuse over-depth documents (#208); bounded MCP/control framing, connections and queues (#201); plugin log limits (#191); live-session revert guard (#198); attached MCP no longer replays after a lost reply (#194); repeat command recursion fix; the Layout panel's constrain-proportions link scales the other side, #220; core editor leftovers: component playground, auto gap handles, variables inside styles, inner shadows and background blur on groups, command-made text readable on dark pages, a one-step frame/group convert, delays on mouse triggers and manual overlay offsets, wrapped-line alignment; `.fig` export: instance sizes, variables with modes, shared styles, variable-width strokes; starter templates, a Templates tab and Getting started tips on the home screen; your online files; everyday editing partials: number fields, outline options, Hide when publishing, cursors, panel widths, dark pages; sharing with a join code; text box sizes measured against documents re-saved by other software; live sessions per document; .fig export checked by opening written files in other software; a public figcraft-server: open hosting, owner tokens, per-address limits, idle expiry, moderation, install.sh; experimental .fig export; keyboard shortcut parity suite and bindings; Simplified Chinese draft catalog; Latin American Spanish overlay; prototyping tail: gamepad triggers, widgets in prototypes, mode lookups; plugin directory on figcraft-server; Japanese and Korean draft catalogs and CJK UI fonts; plugin widgets and the plugin panel tail; French, German and Brazilian Portuguese draft catalogs; cursor chat and spotlight in live sessions; layers and assets panels behaviour suite and fixes; vector multi-edit and edit tail; dev resources links; extended collections tail; branch version history and finer list merges; headline percentages recomputed from the area table: feature breadth ~84%, core ~94%, mainstream ~50%; text lists, hanging punctuation and decoration styles; comments and version history behaviour suite and fixes; canvas navigation, guides and grids behaviour suite and fixes; export and inspect behaviour suite and fixes; .fig import: editable vector networks and more layer kinds; shapes and vector behaviour suite and fixes; paint and effects behaviour suite and fixes; frames, groups, sections and masks behaviour suite and fixes; styles and variables behaviour suite and fixes; prototyping behaviour suite and fixes; components behaviour suite and fixes; embedded image colour profiles; layers panel keyboard: F2 rename, Shift+F10 context menu, keyboard box selection, 10k-layer QA; per-side stroke weight variables; text behaviour suite: CJK line breaking, metrics, vertical trim; selection and transform behaviour suite and fixes; `.fig` import, best effort; Windows QA pass with eight fixes; auto layout behaviour suite and fixes; Display P3: gamut warning and soft-proof (true P3 blocked upstream); several windows; localization layer with a draft Spanish catalog; hosting figcraft-server: wss in the desktop app, server releases, deployment guide; plugin panels and settings; canvas fixes: boolean hit testing on the result, group drags, frame outlines and slices; code connect; stretch and scatter brushes, pen pressure; text on a path and pattern fills; team libraries on the server and swap library; branches: create, update from main, review and merge; animated GIF fills and TIFF images; Open recent, outlines for the selection and mask outlines: menu breadth 100%; extended collections, variables import/export, gradient stop and variant bindings; feature breadth ~80%; ready ~49%) · **Target:** Figma Design (desktop app 126.10.7)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-16 · **Change:** minor (bounded canvas pan overscan; community fixes from #478 up and a control-channel fix (#589); bounded canvas pan overscan; Typography spacing icons support scrubbing (#373); font scans skip named pipes; system theme on first run; recent files as cards with thumbnails on the home screen; community fixes: lost images reported on loading (#207), SVG import budgets (#190), Leptos code (#223), full screen (#227), server snapshots readable again (#188), owner-only preferences (#200), ruzstd 0.9.1 (#182), layer cycle repair (#205), batch rollback, Direct3D 12 on Windows, plugin metering (#192); vector edit mode regions: hover hatch, selection and drag; SVG/PDF exports refuse over-depth documents (#208); bounded MCP/control framing, connections and queues (#201); plugin log limits (#191); live-session revert guard (#198); attached MCP no longer replays after a lost reply (#194); repeat command recursion fix; the Layout panel's constrain-proportions link scales the other side, #220; core editor leftovers: component playground, auto gap handles, variables inside styles, inner shadows and background blur on groups, command-made text readable on dark pages, a one-step frame/group convert, delays on mouse triggers and manual overlay offsets, wrapped-line alignment; `.fig` export: instance sizes, variables with modes, shared styles, variable-width strokes; starter templates, a Templates tab and Getting started tips on the home screen; your online files; everyday editing partials: number fields, outline options, Hide when publishing, cursors, panel widths, dark pages; sharing with a join code; text box sizes measured against documents re-saved by other software; live sessions per document; .fig export checked by opening written files in other software; a public figcraft-server: open hosting, owner tokens, per-address limits, idle expiry, moderation, install.sh; experimental .fig export; keyboard shortcut parity suite and bindings; Simplified Chinese draft catalog; Latin American Spanish overlay; prototyping tail: gamepad triggers, widgets in prototypes, mode lookups; plugin directory on figcraft-server; Japanese and Korean draft catalogs and CJK UI fonts; plugin widgets and the plugin panel tail; French, German and Brazilian Portuguese draft catalogs; cursor chat and spotlight in live sessions; layers and assets panels behaviour suite and fixes; vector multi-edit and edit tail; dev resources links; extended collections tail; branch version history and finer list merges; headline percentages recomputed from the area table: feature breadth ~84%, core ~94%, mainstream ~50%; text lists, hanging punctuation and decoration styles; comments and version history behaviour suite and fixes; canvas navigation, guides and grids behaviour suite and fixes; export and inspect behaviour suite and fixes; .fig import: editable vector networks and more layer kinds; shapes and vector behaviour suite and fixes; paint and effects behaviour suite and fixes; frames, groups, sections and masks behaviour suite and fixes; styles and variables behaviour suite and fixes; prototyping behaviour suite and fixes; components behaviour suite and fixes; embedded image colour profiles; layers panel keyboard: F2 rename, Shift+F10 context menu, keyboard box selection, 10k-layer QA; per-side stroke weight variables; text behaviour suite: CJK line breaking, metrics, vertical trim; selection and transform behaviour suite and fixes; `.fig` import, best effort; Windows QA pass with eight fixes; auto layout behaviour suite and fixes; Display P3: gamut warning and soft-proof (true P3 blocked upstream); several windows; localization layer with a draft Spanish catalog; hosting figcraft-server: wss in the desktop app, server releases, deployment guide; plugin panels and settings; canvas fixes: boolean hit testing on the result, group drags, frame outlines and slices; code connect; stretch and scatter brushes, pen pressure; text on a path and pattern fills; team libraries on the server and swap library; branches: create, update from main, review and merge; animated GIF fills and TIFF images; Open recent, outlines for the selection and mask outlines: menu breadth 100%; extended collections, variables import/export, gradient stop and variant bindings; feature breadth ~80%; ready ~49%) · **Target:** Figma Design (desktop app 126.10.7)
 
 FigCraft is a clean-room, open-source, pure-Rust reimplementation of the Figma design workflow,
 native on macOS, Windows, Linux and FreeBSD and in the browser, fully drivable by agents through
@@ -313,6 +313,10 @@ Ranked; detail and milestones in [`docs/roadmap.md`](docs/roadmap.md).
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-16 | minor | Community fixes from #478 up (batches #591, #598, #602; 69 PRs) and a control-channel fix: a line that isn't JSON now ends a `--control` connection, so a web page can't drive the app through a browser request (#589). Highlights: page copies keep navigation, flows, prototype settings and guides; Find and Replace keeps line endings and case-insensitive matches; text hyperlinks survive import and export; recent colours record only what was picked; MCP screenshots respect `maxSize`; Swedish catalog (UI strings), Czech plurals; bounded canvas overscan while panning; Korean fallback at the run's weight; many vector-edit, guide, page and .fig round-trip fixes. Numbers unchanged |
+| 2026-10-15 | minor | Drop files anywhere to open them (M7): dragging files over the window shows a "Drop to open" (home) or "Drop to import" (canvas) overlay. On the home screen each supported file opens as a document of its own and other files are turned away with a toast; on the canvas the files import at the drop point. Both wait behind a small card that is on screen before a large file blocks the window. A canvas import stays with the document and page that received the drop even if the tab or page changes meanwhile, and is cancelled with a message if that document or page is gone. Numbers unchanged. |
+| 2026-10-15 | minor | M7: system font discovery skips entries observed as non-regular files before opening them, avoiding the reproduced named-pipe stall. Regular-file symlinks remain supported; directory depth, font limits and priorities are unchanged. Numbers unchanged. |
+| 2026-10-15 | minor | Canvas retains a bounded margin while panning so newly exposed strips can reuse the previous render. Numbers unchanged. |
 | 2026-10-15 | minor | Typography spacing icons scrub with the shared number-field gesture, modifier rates and one Undo step per drag (#373). Units and selected-character targeting are preserved. Numbers unchanged. |
 | 2026-10-14 | minor | System theme on first run (M7): preferences without a theme default to System; the first frame reads the OS appearance directly, including when returning from a manual theme. Saved Light/Dark choices stay explicit; unavailable OS appearance falls back to Light. Numbers unchanged. |
 | 2026-10-14 | minor | Home screen recent files as cards (M7): each card shows the picture its file carries on its first page's colour, the file's icon, name and "Edited ... ago"; sort by name, creation or last change either way; a table view; a click selects, a double-click or Enter opens, arrow keys move; Open, Show in folder and Remove from recents on right-click. Numbers unchanged. |

apps/figcraft/src/control_server.rs

@@ -111,7 +111,13 @@ fn serve(mut out: TcpStream, queue: Queue, ctx: CtxSlot, timeout: Duration) -> s
                     }
                 }
             }
-            Err(e) => json!({"id": null, "ok": false, "error": format!("bad JSON: {e}")}),
+            Err(e) => {
+                // A line that isn't JSON ends the connection: a web page can make the browser send
+                // an HTTP request here, and its header lines must not let the JSON lines of its body
+                // through as commands.
+                writeln!(out, "{}", json!({"id": null, "ok": false, "error": format!("bad JSON: {e}")}))?;
+                break;
+            }
         };
         writeln!(out, "{reply}")?;
     }

apps/figcraft/src/control_server_tests.rs

@@ -53,9 +53,8 @@ fn valid_frames_keep_their_order_ids_and_parameters() {
     let pending = queue();
     let q = pending.clone();
     let worker = std::thread::spawn(move || serve(server, q, context(), Duration::from_secs(5)));
-    client.write_all(b"\r\n{bad JSON}\n{\"id\":\"test\",\"method\":\"engine.execute\",\"params\":{\"command\":\"shape.rectangle\"}}\r\n").unwrap();
+    client.write_all(b"\r\n{\"id\":\"test\",\"method\":\"engine.execute\",\"params\":{\"command\":\"shape.rectangle\"}}\r\n").unwrap();
     let mut reader = BufReader::new(client);
-    assert_eq!(reply(&mut reader)["ok"], false);
     let start = Instant::now();
     let r = loop {
         if let Some(r) = pending.lock().unwrap().pop() {
@@ -73,6 +72,23 @@ fn valid_frames_keep_their_order_ids_and_parameters() {
     worker.join().unwrap().unwrap();
 }
 
+#[test]
+fn a_line_that_is_not_json_ends_the_connection_before_anything_after_it_runs() {
+    // What a browser sends when a web page posts to the port: the JSON line in its body never runs.
+    let (mut client, server) = pair();
+    let pending = queue();
+    let q = pending.clone();
+    let worker = std::thread::spawn(move || serve(server, q, context(), Duration::from_secs(5)));
+    let body = "{\"id\":1,\"method\":\"engine.execute\",\"params\":{\"command\":\"file.save\"}}\n";
+    let http = format!("POST / HTTP/1.1\r\nHost: 127.0.0.1\r\nContent-Type: text/plain\r\nContent-Length: {}\r\n\r\n{body}", body.len());
+    client.write_all(http.as_bytes()).unwrap();
+    let mut reader = BufReader::new(client);
+    assert_eq!(reply(&mut reader)["ok"], false);
+    assert_eq!(reader.read(&mut [0]).unwrap(), 0, "the connection is closed");
+    worker.join().unwrap().unwrap();
+    assert!(pending.lock().unwrap().is_empty(), "nothing was dispatched");
+}
+
 #[test]
 fn full_queue_rejects_before_dispatch_and_ui_queue_stays_bounded() {
     let (mut client, server) = pair();

crates/doc/src/lib.rs

@@ -781,6 +781,23 @@ impl Document {
         self.paste_nodes(&src_nodes, &map, id, parent, index)
     }
 
+    /// Deep-copy each of `ids`' subtrees to the end of `parent`, in order, returning the new root
+    /// ids. One id map covers every copy, so references between the copied subtrees (a navigation
+    /// from one copied frame to another) point at the copies.
+    pub fn duplicate_all_into(&mut self, ids: &[NodeId], parent: NodeId) -> DocResult<Vec<NodeId>> {
+        let mut map = BTreeMap::new();
+        let mut trees = Vec::with_capacity(ids.len());
+        for &id in ids {
+            let src_nodes: Vec<Node> = self.subtree(id).into_iter().filter_map(|i| self.node(i).cloned()).collect();
+            for n in &src_nodes {
+                let nid = self.alloc_id();
+                map.insert(n.id, nid);
+            }
+            trees.push((id, src_nodes));
+        }
+        trees.into_iter().map(|(id, src_nodes)| self.paste_nodes(&src_nodes, &map, id, parent, None)).collect()
+    }
+
     /// Insert copies of `nodes` (a subtree rooted at `root`, from this or another document) with ids
     /// remapped by `map`. Interactions, instance references and pattern sources pointing inside the
     /// subtree are remapped too.

crates/doc/src/tests.rs

@@ -168,6 +168,27 @@ fn text_runs_restyle_and_replace() {
     assert_eq!(t.characters, "");
 }
 
+/// A run that reaches past the text (a file can carry one: nothing clamps `runs` on load)
+/// must not overflow the arithmetic that shifts the runs along, and must not leave the
+/// text unwritable.
+#[test]
+fn text_runs_past_the_text_never_overflow() {
+    let style = || TextStyle { font_style: "Bold".into(), ..Default::default() };
+    for end in [usize::MAX, usize::MAX - 1, 1_000_000] {
+        let mut t = TextData::new("hi");
+        t.runs = vec![StyleRun { start: 0, end, style: style() }];
+        // Typing at the caret, and replacing a selection: both shift `end`.
+        t.replace_range(0, 0, "x");
+        assert_eq!(t.characters, "xhi", "end {end}");
+        t.replace_range(0, 3, "yo");
+        assert_eq!(t.characters, "yo", "end {end}");
+        // The text is still writable and the runs are back inside it.
+        t.replace_range(0, 0, "!");
+        assert_eq!(t.characters, "!yo", "end {end}");
+        assert!(t.runs.iter().all(|r| r.start < r.end && r.end <= t.char_count()), "end {end}: {:?}", t.runs);
+    }
+}
+
 #[test]
 fn text_case() {
     assert_eq!(TextCase::Title.apply("hello big world"), "Hello Big World");
@@ -382,6 +403,46 @@ fn custom_easings() {
     assert_eq!(serde_json::from_value::<Easing>(serde_json::json!("easeInOut")).unwrap(), Easing::EaseInOut);
 }
 
+#[test]
+fn text_style_updates_merge_equal_runs() {
+    let def = TextStyle { font_size: 14.0, ..Default::default() };
+    let mut t = TextData::new("abcd");
+    t.link_text_style(0, 2, &def, "S");
+    t.link_text_style(2, 4, &def, "S");
+    t.restyle(2, 4, |s| s.font_size = 24.0);
+    assert_eq!(t.runs.len(), 2);
+    t.update_text_style("S", &TextStyle { font_size: 24.0, ..def.clone() });
+    let spans = t.spans();
+    assert_eq!(spans.len(), 1);
+    assert_eq!((spans[0].0, spans[0].1), (0, 4));
+    assert_eq!(spans[0].2.font_size, 24.0);
+    assert_eq!(spans[0].2.style_id.as_deref(), Some("S"));
+
+    // Remapping two links to one id merges the runs.
+    let mut t = TextData::new("ab");
+    t.link_text_style(0, 1, &def, "A");
+    t.link_text_style(1, 2, &def, "B");
+    t.map_text_styles(|_| Some("C".into()));
+    assert_eq!(t.spans().len(), 1);
+    assert_eq!(t.style_at(1).style_id.as_deref(), Some("C"));
+
+    // Different values stay separate.
+    let mut t = TextData::new("ab");
+    t.link_text_style(0, 1, &def, "A");
+    t.link_text_style(1, 2, &TextStyle { font_size: 30.0, ..Default::default() }, "B");
+    t.map_text_styles(|_| Some("C".into()));
+    let spans = t.spans();
+    assert_eq!(spans.len(), 2);
+    assert_eq!((spans[0].2.font_size, spans[1].2.font_size), (14.0, 30.0));
+
+    // Unlinking a run equal to the base drops it.
+    let mut t = TextData::new("ab");
+    let base = t.style.clone();
+    t.link_text_style(0, 1, &base, "S");
+    t.map_text_styles(|_| None);
+    assert!(t.runs.is_empty());
+}
+
 #[test]
 fn text_style_empty_range_links_and_unlinks_all() {
     let def = TextStyle { font_style: "Bold".into(), ..Default::default() };

crates/doc/src/text.rs

@@ -562,7 +562,7 @@ impl TextData {
         }
     }
 
-    /// Drop empty/out-of-range runs and runs equal to the base style.
+    /// Drop empty/out-of-range runs and runs equal to the base style, and merge touching equal runs.
     pub fn normalize(&mut self) {
         let n = self.char_count();
         let base = self.style.clone();
@@ -571,6 +571,14 @@ impl TextData {
             r.end = r.end.min(n);
         }
         self.runs.sort_by_key(|r| r.start);
+        let mut merged: Vec<StyleRun> = Vec::with_capacity(self.runs.len());
+        for r in std::mem::take(&mut self.runs) {
+            match merged.last_mut() {
+                Some(prev) if prev.end == r.start && prev.style == r.style => prev.end = r.end,
+                _ => merged.push(r),
+            }
+        }
+        self.runs = merged;
     }
 
     /// Replace chars `start..end` with `text`, shifting runs (inserted text takes the style at `start`).
@@ -602,7 +610,9 @@ impl TextData {
                 if p <= start {
                     p
                 } else if p >= end {
-                    p - removed + inserted
+                    // Runs of a file that reach past the text (nothing clamps them on load)
+                    // would otherwise overflow here; `normalize` below drops what is left.
+                    p.saturating_sub(removed).saturating_add(inserted)
                 } else {
                     start + inserted
                 }

crates/engine/src/cmd/create.rs

@@ -216,7 +216,7 @@ pub fn create(s: &mut Session, p: &Value) -> Result<Value> {
         }
     }
     if let NodeKind::Text(td) = &mut kind {
-        td.characters = string(p, "text").or_else(|| string(p, "characters")).unwrap_or_default();
+        td.characters = super::props::normalize_line_endings(&string(p, "text").or_else(|| string(p, "characters")).unwrap_or_default());
         if w > 0.0 {
             td.auto_resize = TextAutoResize::Height;
         }

crates/engine/src/cmd/edit.rs

@@ -1003,7 +1003,8 @@ fn find_replace(s: &mut Session, p: &Value) -> Result<Value> {
     if find.is_empty() {
         return Err(bad("edit.findReplace", "`find` is empty"));
     }
-    let replace = string(p, "replace");
+    // Line breaks stored as the editor stores them (CRLF, CR, U+2028 and U+2029 become LF).
+    let replace = string(p, "replace").map(|r| super::props::normalize_line_endings(&r));
     let names = boolean(p, "layerNames").unwrap_or(false);
     let page = s.page()?;
     let doc = s.doc_mut()?;

crates/engine/src/cmd/page.rs

@@ -97,11 +97,13 @@ pub fn specs() -> Vec<CommandSpec> {
             let doc = s.doc_mut()?;
             let name = format!("Copy of {}", doc.get(src)?.name);
             let np = doc.add_page(&name);
-            // Each layer and its copy (also those in sections), so flows can follow their start frames.
+            // One copy with one id map, so navigation between the copied frames points at the copies;
+            // then each layer and its copy (also those in sections), so flows can follow their start frames.
+            let children = doc.get(src)?.children.clone();
+            let copied = doc.duplicate_all_into(&children, np)?;
             let mut copies = Vec::new();
-            for c in doc.get(src)?.children.clone() {
-                let copy = doc.duplicate_into(c, np, None)?;
-                copies.extend(doc.subtree(c).into_iter().zip(doc.subtree(copy)));
+            for (c, copy) in children.iter().zip(&copied) {
+                copies.extend(doc.subtree(*c).into_iter().zip(doc.subtree(*copy)));
             }
             // The copy keeps the page's colour, flows (pointing at the copied frames), prototype settings and guides.
             if let NodeKind::Page { background, flows, prototype, guides } = doc.get(src)?.kind.clone()

crates/engine/src/cmd/props.rs

@@ -30,6 +30,11 @@ fontVariations / variationSettings ({axis: number}, e.g. {\"wght\": 550, \"wdth\
 arcInner, booleanOperation (a boolean group's operation, or an operand's own; null: the group's), operandOperation (a layer in a boolean \
 group: how it combines with the operands below it; null: the group's), constrainProportions, description, interactions, overflow, pluginData {k: v}";
 
+/// CRLF, bare CR, U+2028 and U+2029 become LF, the only line ending text layout understands (editor insertion does the same).
+pub(crate) fn normalize_line_endings(s: &str) -> String {
+    s.replace("\r\n", "\n").replace(['\r', '\u{2028}', '\u{2029}'], "\n")
+}
+
 /// camelCase object keys → snake_case (accept the inspect/camel forms for serde-backed values).
 pub fn snake(v: &Value) -> Value {
     match v {
@@ -599,7 +604,7 @@ pub fn apply(cmd: &str, doc: &mut Document, id: NodeId, props: &Map<String, Valu
                 let n = doc.get_mut(id)?;
                 let t = text_mut(cmd, n)?;
                 let len = t.char_count();
-                t.replace_range(0, len, &s);
+                t.replace_range(0, len, &normalize_line_endings(&s));
                 n.overrides.insert("characters".into());
             }
             "fontFamily"

crates/engine/src/components.rs

@@ -472,11 +472,11 @@ fn apply_prop(doc: &Document, n: &mut Node, field: &str, val: &Value) {
             }
         }
         "characters" => {
-            if let (NodeKind::Text(t), Some(sv)) = (&mut n.kind, val.as_str())
+            if let (NodeKind::Text(t), Some(sv)) = (&mut n.kind, val.as_str().map(crate::cmd::props::normalize_line_endings))
                 && t.characters != sv
             {
                 let len = t.char_count();
-                t.replace_range(0, len, sv);
+                t.replace_range(0, len, &sv);
             }
         }
         "mainComponent" => {

crates/engine/src/lib.rs

@@ -1562,6 +1562,8 @@ mod library_range_styles_tests;
 #[cfg(test)]
 mod library_variables_tests;
 #[cfg(test)]
+mod line_endings_tests;
+#[cfg(test)]
 mod live_access_tests;
 #[cfg(test)]
 mod live_docs_tests;
@@ -1588,6 +1590,8 @@ mod open_issues_tests;
 #[cfg(test)]
 mod outline_options_tests;
 #[cfg(test)]
+mod page_copy_navigation_tests;
+#[cfg(test)]
 mod page_target_tests;
 #[cfg(test)]
 mod paint_reorder_tests;

crates/engine/src/line_endings_tests.rs

@@ -0,0 +1,56 @@
+//! Text set by a command stores every line ending as LF, like editor insertion does, so layout
+//! sees two lines and no stray glyph for CRLF, bare CR, U+2028 or U+2029.
+
+use serde_json::json;
+
+use crate::Session;
+use crate::components::tests::{card, chars, copy_of, ex, idv};
+use crate::params::id_of;
+
+const INPUTS: [&str; 5] = ["a\nb", "a\r\nb", "a\rb", "a\u{2028}b", "a\u{2029}b"];
+
+#[test]
+fn text_set_normalizes_line_endings() {
+    let mut s = Session::new();
+    let created = s.execute("text.create", &json!({"text": "", "x": 0, "y": 0})).unwrap();
+    let id = id_of(&created["id"]).unwrap();
+    for input in INPUTS {
+        s.execute("text.set", &json!({"id": id, "characters": input})).unwrap();
+        let t = s.doc().unwrap().node(id).unwrap().kind.text().unwrap().clone();
+        assert_eq!(t.characters, "a\nb", "text.set {input:?}");
+    }
+}
+
+#[test]
+fn text_create_normalizes_line_endings() {
+    let mut s = Session::new();
+    for input in INPUTS {
+        let created = s.execute("text.create", &json!({"text": input, "x": 0, "y": 0})).unwrap();
+        let id = id_of(&created["id"]).unwrap();
+        let t = s.doc().unwrap().node(id).unwrap().kind.text().unwrap().clone();
+        assert_eq!(t.characters, "a\nb", "text.create {input:?}");
+    }
+}
+
+#[test]
+fn find_replace_normalizes_line_endings() {
+    for input in INPUTS {
+        let mut s = Session::new();
+        let id = idv(&ex(&mut s, "text.create", json!({"text": "x", "x": 0, "y": 0})));
+        ex(&mut s, "edit.findReplace", json!({"find": "x", "replace": input}));
+        assert_eq!(chars(&s, id), "a\nb", "edit.findReplace {input:?}");
+    }
+}
+
+#[test]
+fn text_property_values_normalize_line_endings() {
+    let mut s = Session::new();
+    let (c, _bg, title, _dot) = card(&mut s);
+    ex(&mut s, "component.addProperty", json!({"id": c, "name": "Title", "type": "text", "layer": title}));
+    let i = idv(&ex(&mut s, "instance.create", json!({"component": c, "x": 300, "y": 0})));
+    let copy = copy_of(&s, i, title);
+    for input in INPUTS {
+        ex(&mut s, "instance.setProperties", json!({"ids": [i], "properties": {"Title": input}}));
+        assert_eq!(chars(&s, copy), "a\nb", "instance.setProperties {input:?}");
+    }
+}

crates/engine/src/page_copy_navigation_tests.rs

@@ -0,0 +1,48 @@
+//! Duplicating a page copies its prototype connections: navigation between two frames that are both
+//! on the page leads between the copies, while a destination outside the copied contents is kept.
+
+use figcraft_doc::NodeId;
+use serde_json::{Value, json};
+
+use crate::Session;
+use crate::params::id_of;
+
+fn ex(s: &mut Session, cmd: &str, p: Value) -> Value {
+    s.execute(cmd, &p).unwrap_or_else(|e| panic!("{cmd}: {e}"))
+}
+
+fn frame(s: &mut Session, x: f64) -> NodeId {
+    id_of(&ex(s, "frame.create", json!({"x": x, "y": 0, "width": 100, "height": 100}))["id"]).unwrap()
+}
+
+fn dest(s: &Session, id: NodeId) -> NodeId {
+    s.doc().unwrap().node(id).unwrap().interactions[0].actions[0].dest().unwrap()
+}
+
+#[test]
+fn page_copy_navigation_uses_the_copied_destination() {
+    let mut s = Session::new();
+    let first = frame(&mut s, 0.0);
+    let second = frame(&mut s, 200.0);
+    ex(&mut s, "proto.interaction.add", json!({"id": first, "action": {"type": "navigate", "dest": second}}));
+    let copy = id_of(&ex(&mut s, "page.duplicate", json!({}))["id"]).unwrap();
+    let children = s.doc().unwrap().node(copy).unwrap().children.clone();
+    assert_eq!(children.len(), 2);
+    assert_eq!(dest(&s, children[0]), children[1]);
+    let visited = Default::default();
+    assert_eq!(crate::proto_run::navigate_target(s.doc().unwrap(), dest(&s, children[0]), &visited), Some(children[1]));
+    assert_eq!(dest(&s, first), second, "the original keeps its destination");
+}
+
+#[test]
+fn frame_copy_keeps_an_outside_destination() {
+    let mut s = Session::new();
+    let first = frame(&mut s, 0.0);
+    let second = frame(&mut s, 200.0);
+    ex(&mut s, "proto.interaction.add", json!({"id": first, "action": {"type": "navigate", "dest": second}}));
+    ex(&mut s, "select.set", json!({"ids": [first]}));
+    ex(&mut s, "edit.duplicate", json!({}));
+    let copy = s.selection()[0];
+    assert_ne!(copy, first);
+    assert_eq!(dest(&s, copy), second);
+}

crates/engine/src/textedit.rs

@@ -83,12 +83,7 @@ fn edit(s: &mut Session, f: impl FnOnce(&mut TextData, &mut TextEdit)) -> Result
 /// Type (or paste) `text` replacing the selection. Line endings are normalised and other control
 /// characters dropped, so pasted plain text from any platform lands cleanly.
 pub fn insert(s: &mut Session, text: &str) -> Result<()> {
-    let text: String = text
-        .replace("\r\n", "\n")
-        .replace(['\r', '\u{2028}', '\u{2029}'], "\n")
-        .chars()
-        .filter(|c| !c.is_control() || matches!(c, '\n' | '\t'))
-        .collect();
+    let text: String = crate::cmd::props::normalize_line_endings(text).chars().filter(|c| !c.is_control() || matches!(c, '\n' | '\t')).collect();
     if text.is_empty() {
         return Ok(());
     }

crates/format/src/fig/export.rs

@@ -1552,6 +1552,10 @@ impl<'d> Exporter<'d> {
                 .map(|(st, id)| {
                     let mut ef: Fields = vec![("styleID", u(id))];
                     style_fields(st, &mut ef);
+                    // An empty link clears the text's own (a missing one would inherit it).
+                    if st.link.is_none() && td.style.link.is_some() {
+                        ef.push(("hyperlink", o(vec![("url", s(""))])));
+                    }
                     if let Some(p) = st.fills.as_deref().or(td.style.fills.as_ref().map(|_| fills)) {
                         ef.push(("fillPaints", self.paints(p, true, &Bound::default())));
                     }

crates/format/src/fig/map.rs

@@ -1762,7 +1762,8 @@ fn text_style(v: &View, size: Option<f64>) -> Obj {
             }
         }
     }
-    if let Some(u) = v.get("hyperlink").and_then(|h| h.get("url")).and_then(Kv::str).filter(|u| !u.is_empty()) {
+    // An empty URL is kept: on an override entry it clears the text's own link.
+    if let Some(u) = v.get("hyperlink").and_then(|h| h.get("url")).and_then(Kv::str) {
         s.insert("hyperlink".into(), json!({"type": "URL", "url": u}));
     }
     s

crates/format/src/rest/text.rs

@@ -130,6 +130,8 @@ fn type_style(cx: &mut Ctx, s: &Value, base: &TextStyle) -> TextStyle {
             // and clipping a URL changed it into a different, working-looking one without a word
             // (#459). The FIG importer already keeps it whole.
             (Some("URL") | None, Some(url)) if !url.is_empty() => t.link = Some(url.to_string()),
+            // An empty URL clears the link the base style has.
+            (Some("URL") | None, Some(_)) => t.link = None,
             _ => {}
         }
     }

crates/format/tests/range_hyperlink_round_trip.rs

@@ -0,0 +1,38 @@
+//! A hyperlink cleared on part of a text layer stays cleared through FIG export and import.
+
+use figcraft_doc::{Document, NodeKind, TextData};
+use figcraft_format::fig;
+
+fn links(doc: &Document, name: &str) -> Vec<Option<String>> {
+    let Some(NodeKind::Text(text)) = doc.nodes().find(|n| n.name == name).map(|n| &n.kind) else { return Vec::new() };
+    text.spans().into_iter().flat_map(|(start, end, style)| std::iter::repeat_n(style.link.clone(), end - start)).collect()
+}
+
+#[test]
+fn cleared_range_hyperlink_round_trip() {
+    let mut document = Document::new("File");
+    let page = document.first_page().unwrap();
+    let url = "https://example.com/".to_string();
+
+    let mut text = TextData { characters: "AB".into(), ..Default::default() };
+    text.style.link = Some(url.clone());
+    text.restyle(1, 2, |style| style.link = None);
+    document.create(page, NodeKind::Text(text), "Cleared", 0.0, 0.0, 100.0, 30.0).unwrap();
+
+    let mut control = TextData { characters: "AB".into(), ..Default::default() };
+    control.restyle(1, 2, |style| style.link = Some(url.clone()));
+    document.create(page, NodeKind::Text(control), "Explicit", 0.0, 40.0, 100.0, 30.0).unwrap();
+
+    let expected = vec![Some(url.clone()), None];
+    assert_eq!(links(&document, "Cleared"), expected);
+    let native_bytes = figcraft_format::save_bytes(&document, None).unwrap();
+    let native = figcraft_format::load_bytes(&native_bytes).unwrap().0;
+    assert_eq!(links(&native, "Cleared"), expected);
+
+    let (bytes, export_warnings) = fig::export(&document, None).unwrap();
+    let (loaded, import_warnings) = fig::import(&bytes, "File").unwrap();
+    assert!(export_warnings.is_empty(), "{export_warnings:?}");
+    assert!(import_warnings.is_empty(), "{import_warnings:?}");
+    assert_eq!(links(&loaded, "Explicit"), vec![None, Some(url)]);
+    assert_eq!(links(&loaded, "Cleared"), expected);
+}

crates/text/src/behaviour_tests.rs

@@ -237,6 +237,34 @@ fn fallback_fonts_dont_move_the_baseline() {
     }
 }
 
+#[test]
+fn hangul_comes_from_a_korean_font_when_one_is_installed() {
+    // The default (Latin) face has no Hangul. With a Korean system font (Apple SD Gothic Neo on
+    // macOS, Malgun Gothic on Windows, Noto Sans CJK KR on Linux) the fallback draws it instead
+    // of the missing-glyph box, at the run's weight. Skips on a machine without one.
+    let Some(f) = face() else { return };
+    if f.has_char('\u{D55C}') {
+        return;
+    }
+    let korean = ["Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans CJK KR", "Noto Sans KR"];
+    if !korean.iter().any(|k| find_face(k, "Regular").is_some_and(|k| k.has_char('\u{D55C}'))) {
+        return;
+    }
+    for style in ["Regular", "Bold"] {
+        let mut t = text("Ab \u{D55C}\u{AD6D}\u{C5B4}", TextAutoResize::WidthAndHeight);
+        t.style.font_style = style.into();
+        let l = layout(&t, None, None);
+        let hangul: Vec<_> = l.glyphs.iter().filter(|g| g.char_start >= 3).collect();
+        assert!(!hangul.is_empty());
+        for g in &hangul {
+            assert!(g.face.has_char('\u{D55C}'), "{style}: drawn by {} {}, which has no Hangul", g.face.family, g.face.style);
+        }
+        let used = &hangul[0].face;
+        let nearest = find_face(&used.family, style).map_or(used.weight, |n| n.weight);
+        assert_eq!(used.weight, nearest, "{style}: the fallback face is the one nearest the run's style");
+    }
+}
+
 #[test]
 fn break_opportunities() {
     // (before, after, may break between, derivation)

crates/text/src/fontdb.rs

@@ -405,6 +405,28 @@ fn names(f: &skrifa::FontRef) -> (Option<String>, Option<String>) {
     (family, style)
 }
 
+/// Families tried, in order, for characters a text's own font lacks.
+const FALLBACK_FAMILIES: [&str; 18] = [
+    "Inter",
+    "Helvetica Neue",
+    "Arial",
+    "Segoe UI",
+    "DejaVu Sans",
+    "Noto Sans",
+    "BIZ UDPGothic",
+    "Hiragino Sans",
+    "PingFang SC",
+    "Noto Sans CJK SC",
+    "Microsoft YaHei",
+    "Apple SD Gothic Neo",
+    "Malgun Gothic",
+    "Noto Sans CJK KR",
+    "Noto Sans KR",
+    "Noto Sans Arabic",
+    "Apple Symbols",
+    "Segoe UI Symbol",
+];
+
 /// A system font file entry not yet loaded.
 #[derive(Clone, Debug)]
 struct Pending {
@@ -614,24 +636,15 @@ impl FontDb {
 
     /// Faces to try for characters the primary face lacks.
     pub fn fallbacks(&mut self) -> Vec<Arc<Face>> {
+        self.fallbacks_for("Regular")
+    }
+
+    /// [`fallbacks`](Self::fallbacks), each family's face nearest `style`, so the characters a
+    /// bold run takes from a fallback font (Hangul in Inter Bold) come out bold too.
+    pub fn fallbacks_for(&mut self, style: &str) -> Vec<Arc<Face>> {
         let mut out = Vec::new();
-        for fam in [
-            "Inter",
-            "Helvetica Neue",
-            "Arial",
-            "Segoe UI",
-            "DejaVu Sans",
-            "Noto Sans",
-            "BIZ UDPGothic",
-            "Hiragino Sans",
-            "PingFang SC",
-            "Noto Sans CJK SC",
-            "Microsoft YaHei",
-            "Noto Sans Arabic",
-            "Apple Symbols",
-            "Segoe UI Symbol",
-        ] {
-            if let Some(f) = self.find(fam, "Regular") {
+        for fam in FALLBACK_FAMILIES {
+            if let Some(f) = self.find(fam, style) {
                 out.push(f);
             }
         }
@@ -734,6 +747,11 @@ fn scan_dir(dir: &std::path::Path, depth: usize, out: &mut BTreeMap<String, (Str
             scan_dir(&path, depth + 1, out);
             continue;
         }
+        // Font-like names can also belong to pipes or devices; opening a pipe can block.
+        // `meta` follows symlinks, so links to regular font files remain supported.
+        if !meta.is_file() {
+            continue;
+        }
         let ext = path.extension().and_then(|e| e.to_str()).map(str::to_ascii_lowercase).unwrap_or_default();
         if !matches!(ext.as_str(), "ttf" | "otf" | "ttc" | "otc") {
             continue;

crates/text/src/fontdb_tests.rs

@@ -56,7 +56,9 @@ fn the_scan_reads_names_like_a_whole_file_read() {
                 let p = e.path();
                 if p.is_dir() {
                     stack.push(p);
-                } else if p.extension().is_some_and(|x| ["ttf", "otf", "ttc", "otc"].contains(&x.to_ascii_lowercase().to_str().unwrap_or(""))) {
+                } else if p.is_file()
+                    && p.extension().is_some_and(|x| ["ttf", "otf", "ttc", "otc"].contains(&x.to_ascii_lowercase().to_str().unwrap_or("")))
+                {
                     files.push(p);
                 }
             }
@@ -68,6 +70,90 @@ fn the_scan_reads_names_like_a_whole_file_read() {
     }
 }
 
+#[cfg(unix)]
+#[test]
+fn the_scan_skips_named_pipes() {
+    use std::process::{Command, Stdio};
+    use std::time::{Duration, Instant};
+
+    const INPUT: &str = "FIGCRAFT_TEST_PIPE_FONT_DIR";
+    if let Some(dir) = std::env::var_os(INPUT) {
+        let mut pending = BTreeMap::new();
+        scan_dir(std::path::Path::new(&dir), 0, &mut pending);
+        assert!(pending.is_empty());
+        std::fs::write(std::path::Path::new(&dir).join("complete"), b"scanned").unwrap();
+        return;
+    }
+
+    struct TempDir(std::path::PathBuf);
+    impl Drop for TempDir {
+        fn drop(&mut self) {
+            let _ = std::fs::remove_dir_all(&self.0);
+        }
+    }
+    let path = std::env::temp_dir().join(format!("figcraft-font-pipe-{}", std::process::id()));
+    std::fs::create_dir(&path).unwrap();
+    let dir = TempDir(path);
+    // POSIX mkfifo is only a test fixture helper, never a runtime font dependency.
+    let status = match Command::new("mkfifo").arg(dir.0.join("pipe.ttf")).status() {
+        Ok(status) => status,
+        Err(error) if error.kind() == std::io::ErrorKind::NotFound => {
+            eprintln!("skipping named-pipe fixture: POSIX mkfifo is unavailable");
+            return;
+        }
+        Err(error) => panic!("cannot create named-pipe fixture: {error}"),
+    };
+    assert!(status.success(), "mkfifo failed");
+    std::os::unix::fs::symlink("pipe.ttf", dir.0.join("linked.otf")).unwrap();
+    std::os::unix::fs::symlink("missing.ttf", dir.0.join("broken.ttf")).unwrap();
+
+    // A regression must fail without leaving a blocked test thread behind. Run only this
+    // test in a child, then kill and reap it if opening the pipe blocks the scanner.
+    struct Child(std::process::Child);
+    impl Drop for Child {
+        fn drop(&mut self) {
+            let _ = self.0.kill();
+            let _ = self.0.wait();
+        }
+    }
+    let module = module_path!().split_once("::").unwrap().1;
+    let mut child = Child(
+        Command::new(std::env::current_exe().unwrap())
+            .args(["--exact", &format!("{module}::the_scan_skips_named_pipes"), "--nocapture"])
+            .env(INPUT, &dir.0)
+            .stdout(Stdio::null())
+            .spawn()
+            .unwrap(),
+    );
+    let deadline = Instant::now() + Duration::from_secs(10);
+    loop {
+        if let Some(status) = child.0.try_wait().unwrap() {
+            assert!(status.success(), "font-scan child failed: {status}");
+            break;
+        }
+        assert!(Instant::now() < deadline, "font scan blocked on a named pipe");
+        // std::process has no portable timed wait; a bounded poll keeps the regression finite.
+        std::thread::sleep(Duration::from_millis(10));
+    }
+    // An exact-filter typo otherwise makes libtest report success after running zero tests.
+    assert_eq!(std::fs::read(dir.0.join("complete")).unwrap(), b"scanned");
+}
+
+#[test]
+fn fallback_faces_follow_the_runs_style() {
+    // A bold run's missing characters come from each fallback family's face nearest Bold, not its
+    // Regular, so Hangul or kana in a bold Latin run come out bold too. Same families, same order.
+    scan_system_fonts();
+    let mut w = db().write().unwrap();
+    let regular = w.fallbacks();
+    let bold = w.fallbacks_for("Bold");
+    let families = |v: &[Arc<Face>]| v.iter().map(|f| f.family.clone()).collect::<Vec<_>>();
+    assert_eq!(families(&regular), families(&bold));
+    for (r, b) in regular.iter().zip(&bold) {
+        assert!(b.weight >= r.weight, "{}: {} is lighter than {}", b.family, b.style, r.style);
+    }
+}
+
 #[cfg(all(unix, not(target_os = "macos")))]
 #[test]
 fn user_font_dirs_follow_xdg_data_home() {

crates/text/src/layout.rs

@@ -325,8 +325,10 @@ pub fn layout(text: &TextData, box_width: Option<f64>, box_height: Option<f64>)
     let mut dbw = db().write().unwrap_or_else(std::sync::PoisonError::into_inner);
     let mut fallbacks = dbw.fallbacks();
     let mut faces: Vec<Option<Arc<Face>>> = Vec::with_capacity(styles.len());
+    let mut style_fallbacks: Vec<Vec<Arc<Face>>> = Vec::with_capacity(styles.len());
     for s in &styles {
         faces.push(dbw.find(&s.font_family, &s.font_style).or_else(|| dbw.default_face()));
+        style_fallbacks.push(dbw.fallbacks_for(&s.font_style));
     }
     // Colour emoji are their own, large faces (Apple Color Emoji is ~180 MB): they are read only
     // for a text with emoji, or with characters nothing above covers.
@@ -371,6 +373,7 @@ pub fn layout(text: &TextData, box_width: Option<f64>, box_height: Option<f64>)
                 if c == '\n' || primary.has_char(c) {
                     return primary.clone();
                 }
+                let fallbacks = style_fallbacks.get(st_idx).unwrap_or(&fallbacks);
                 fallbacks.iter().find(|f| f.has_char(c)).cloned().unwrap_or_else(|| primary.clone())
             };
             let first = chars.get(seg_start).copied().unwrap_or(' ');

crates/ui-egui/locales/cs.toml

@@ -7,7 +7,7 @@ status = "draft — needs native review"
 [ui]
 "% of all commits" = "% všech commitů"
 "(no longer published)" = "(již nepublikováno)"
-"({n} warnings: some entries were skipped)" = { one = "({n} varování: některé položky byly přeskočeny)", other = "(Varování: {n}; některé položky byly přeskočeny)" }
+"({n} warnings: some entries were skipped)" = { one = "({n} varování: některé položky byly přeskočeny)", few = "({n} varování: některé položky byly přeskočeny)", other = "({n} varování: některé položky byly přeskočeny)" }
 "+ Create variable" = "+ Vytvořit proměnnou"
 ".fig (experimental)" = ".fig (experimentální)"
 "1…9, 0" = "1…9, 0"
@@ -455,11 +455,11 @@ status = "draft — needs native review"
 "Export settings" = "Nastavení exportu"
 "Export variables" = "Exportovat proměnné"
 "Export {name}" = "Exportovat {name}"
-"Export {n} layers" = { one = "Exportovat {n} vrstvu", other = "Exportovat vrstvy: {n}" }
+"Export {n} layers" = { one = "Exportovat {n} vrstvu", few = "Exportovat {n} vrstvy", other = "Exportovat {n} vrstev" }
 "Exported {file}" = "Exportován soubor {file}"
 "Exported {name}" = "Exportováno: {name}"
-"Exported {name}; {n} kinds of content were left out" = { one = "Exportováno: {name}; vynechán {n} druh obsahu", other = "Exportováno: {name}; vynechané druhy obsahu: {n}" }
-"Exported {n} files" = { one = "Exportován {n} soubor", other = "Exportované soubory: {n}" }
+"Exported {name}; {n} kinds of content were left out" = { one = "Exportováno: {name}; vynechán {n} druh obsahu", few = "Exportováno: {name}; vynechány {n} druhy obsahu", other = "Exportováno: {name}; vynecháno {n} druhů obsahu" }
+"Exported {n} files" = { one = "Exportován {n} soubor", few = "Exportovány {n} soubory", other = "Exportováno {n} souborů" }
 "Export…" = "Exportovat…"
 "Expose properties to instances" = "Zpřístupnit vlastnosti instancím"
 "Exposure" = "Expozice"
@@ -477,7 +477,7 @@ status = "draft — needs native review"
 "File not found" = "Soubor nenalezen"
 "File published" = "Soubor publikován"
 "Files aren't end-to-end encrypted: the server's operator can read them." = "Soubory nemají koncové šifrování: provozovatel serveru je může číst."
-"Files nobody opens for {n} days are deleted." = { one = "Soubory, které nikdo neotevře déle než {n} den, se smažou.", other = "Soubory, které nikdo neotevře déle než {n} d, se smažou." }
+"Files nobody opens for {n} days are deleted." = { one = "Soubory, které nikdo neotevře déle než {n} den, se smažou.", few = "Soubory, které nikdo neotevře déle než {n} dny, se smažou.", other = "Soubory, které nikdo neotevře déle než {n} dní, se smažou." }
 "Fill" = "Výplň"
 "Fill (fr)" = "Vyplnit (fr)"
 "Fill container" = "Vyplnit kontejner"
@@ -601,7 +601,7 @@ status = "draft — needs native review"
 "Import plugin from manifest…" = "Importovat plugin z manifestu…"
 "Import variables" = "Importovat proměnné"
 "Imported {name}" = "Importováno: {name}"
-"Imported {n} new variables, updated {updated}" = { one = "Importována {n} nová proměnná, aktualizováno: {updated}", other = "Nově importované proměnné: {n}, aktualizované: {updated}" }
+"Imported {n} new variables, updated {updated}" = { one = "Importována {n} nová proměnná, aktualizováno: {updated}", few = "Importovány {n} nové proměnné, aktualizováno: {updated}", other = "Importováno {n} nových proměnných, aktualizováno: {updated}" }
 "Import…" = "Importovat…"
 "In an instance, this comes from the main component" = "V instanci se toto přebírá z hlavní komponenty"
 "In the browser you can join sessions the desktop app hosts and files on a FigCraft server. A page opened over https reaches other computers only through wss:// links (a server behind TLS)." = "V prohlížeči se můžete připojit k relacím hostovaným desktopovou aplikací a k souborům na serveru FigCraft. Stránka otevřená přes https může přistupovat k jiným počítačům pouze přes odkazy wss:// (server za TLS)."
@@ -1013,7 +1013,7 @@ status = "draft — needs native review"
 "Recent" = "Nedávné"
 "Recent files" = "Nedávné soubory"
 "Recents" = "Nedávné"
-"Recovered {n} unsaved files after the app quit unexpectedly: save them to keep them" = { one = "Po neočekávaném ukončení aplikace obnoven {n} neuložený soubor: uložte ho pro zachování", other = "Po neočekávaném ukončení aplikace obnoveny neuložené soubory (počet: {n}): uložte je pro zachování" }
+"Recovered {n} unsaved files after the app quit unexpectedly: save them to keep them" = { one = "Po neočekávaném ukončení aplikace obnoven {n} neuložený soubor: uložte ho pro zachování", few = "Po neočekávaném ukončení aplikace obnoveny {n} neuložené soubory: uložte je pro zachování", other = "Po neočekávaném ukončení aplikace obnoveno {n} neuložených souborů: uložte je pro zachování" }
 "Rectangle" = "Obdélník"
 "Rectangles" = "Obdélníky"
 "Red" = "Červená"
@@ -1287,8 +1287,8 @@ status = "draft — needs native review"
 "Swap to {name}" = "Vyměnit za {name}"
 "Swap width and height" = "Prohodit šířku a výšku"
 "Swapped instance" = "Instance vyměněna"
-"Swapped {n} assets" = { one = "Vyměněn {n} zdroj", other = "Vyměněné zdroje: {n}" }
-"Swapped {n} assets; {missed} had no match and still use the old library" = { one = "Vyměněn {n} zdroj; bez shody: {missed}, nadále používají původní knihovnu", other = "Vyměněné zdroje: {n}; bez shody: {missed}, nadále používají původní knihovnu" }
+"Swapped {n} assets" = { one = "Vyměněn {n} zdroj", few = "Vyměněny {n} zdroje", other = "Vyměněno {n} zdrojů" }
+"Swapped {n} assets; {missed} had no match and still use the old library" = { one = "Vyměněn {n} zdroj; bez shody: {missed}, nadále používají původní knihovnu", few = "Vyměněny {n} zdroje; bez shody: {missed}, nadále používají původní knihovnu", other = "Vyměněno {n} zdrojů; bez shody: {missed}, nadále používají původní knihovnu" }
 "Sweep" = "Rozsah"
 "System" = "Systém"
 "Tab / Shift+Tab" = "Tab / Shift+Tab"
@@ -1479,7 +1479,7 @@ status = "draft — needs native review"
 "Zoom to selection" = "Přiblížit na výběr"
 "Zoom tool: click to zoom in, drag an area" = "Nástroj přiblížení: kliknutím přiblížíte, tažením vyberete oblast"
 "Zoom tool: zoom out" = "Nástroj přiblížení: oddálit"
-"and {n} more" = { one = "a {n} další", other = "a další (počet: {n})" }
+"and {n} more" = { one = "a {n} další", few = "a {n} další", other = "a {n} dalších" }
 "bleed marks" = "značky spadávky"
 "by {author}" = "autor: {author}"
 "call any command its access allows" = "volat libovolný příkaz povolený jeho oprávněními"
@@ -1531,35 +1531,35 @@ status = "draft — needs native review"
 "{name}, in a live session" = "{name}, v živé relaci"
 "{name}, online, open only to you" = "{name}, online, přístupný pouze vám"
 "{name}, {kind}, {w} by {h}, selected" = "{name}, {kind}, {w} × {h}, vybráno"
-"{n} added" = { one = "Přidáno: {n}", other = "Přidáno: {n}" }
-"{n} autosave versions" = { one = "{n} automaticky uložená verze", other = "Automaticky uložené verze: {n}" }
-"{n} changed" = { one = "Změněno: {n}", other = "Změněno: {n}" }
-"{n} columns" = { one = "{n} sloupec", other = "Sloupce: {n}" }
-"{n} components" = { one = "{n} komponenta", other = "Komponenty: {n}" }
-"{n} components and styles have newer versions" = { one = "{n} komponenta nebo styl má novější verzi", other = "Komponenty a styly s novější verzí: {n}" }
-"{n} conflicts to resolve" = { one = "{n} konflikt k vyřešení", other = "Konflikty k vyřešení: {n}" }
-"{n} days ago" = { one = "Před {n} dnem", other = "Před {n} dny" }
-"{n} files" = { one = "{n} soubor", other = "Soubory: {n}" }
-"{n} hours ago" = { one = "Před {n} hodinou", other = "Před {n} hodinami" }
-"{n} instances" = { one = "{n} instance", other = "Instance: {n}" }
-"{n} layers" = { one = "{n} vrstva", other = "Vrstvy: {n}" }
-"{n} layers as one file" = { one = "{n} vrstva jako jeden soubor", other = "Vrstvy jako jeden soubor: {n}" }
-"{n} layers selected" = { one = "Vybrána {n} vrstva", other = "Vybrané vrstvy: {n}" }
-"{n} layers · {parts}" = { one = "{n} vrstva · {parts}", other = "Vrstvy: {n} · {parts}" }
-"{n} matches" = { one = "{n} shoda", other = "Shody: {n}" }
-"{n} minutes ago" = { one = "Před {n} minutou", other = "Před {n} minutami" }
-"{n} months ago" = { one = "Před {n} měsícem", other = "Před {n} měsíci" }
+"{n} added" = { one = "Přidáno: {n}", few = "Přidáno: {n}", other = "Přidáno: {n}" }
+"{n} autosave versions" = { one = "{n} automaticky uložená verze", few = "{n} automaticky uložené verze", other = "{n} automaticky uložených verzí" }
+"{n} changed" = { one = "Změněno: {n}", few = "Změněno: {n}", other = "Změněno: {n}" }
+"{n} columns" = { one = "{n} sloupec", few = "{n} sloupce", other = "{n} sloupců" }
+"{n} components" = { one = "{n} komponenta", few = "{n} komponenty", other = "{n} komponent" }
+"{n} components and styles have newer versions" = { one = "{n} komponenta nebo styl má novější verzi", few = "{n} komponenty nebo styly mají novější verzi", other = "{n} komponent nebo stylů má novější verzi" }
+"{n} conflicts to resolve" = { one = "{n} konflikt k vyřešení", few = "{n} konflikty k vyřešení", other = "{n} konfliktů k vyřešení" }
+"{n} days ago" = { one = "Před {n} dnem", few = "Před {n} dny", other = "Před {n} dny" }
+"{n} files" = { one = "{n} soubor", few = "{n} soubory", other = "{n} souborů" }
+"{n} hours ago" = { one = "Před {n} hodinou", few = "Před {n} hodinami", other = "Před {n} hodinami" }
+"{n} instances" = { one = "{n} instance", few = "{n} instance", other = "{n} instancí" }
+"{n} layers" = { one = "{n} vrstva", few = "{n} vrstvy", other = "{n} vrstev" }
+"{n} layers as one file" = { one = "{n} vrstva jako jeden soubor", few = "{n} vrstvy jako jeden soubor", other = "{n} vrstev jako jeden soubor" }
+"{n} layers selected" = { one = "Vybrána {n} vrstva", few = "Vybrány {n} vrstvy", other = "Vybráno {n} vrstev" }
+"{n} layers · {parts}" = { one = "{n} vrstva · {parts}", few = "{n} vrstvy · {parts}", other = "{n} vrstev · {parts}" }
+"{n} matches" = { one = "{n} shoda", few = "{n} shody", other = "{n} shod" }
+"{n} minutes ago" = { one = "Před {n} minutou", few = "Před {n} minutami", other = "Před {n} minutami" }
+"{n} months ago" = { one = "Před {n} měsícem", few = "Před {n} měsíci", other = "Před {n} měsíci" }
 "{n} of {total}" = "{n} z {total}"
-"{n} people joined" = { one = "Připojena {n} osoba", other = "Připojené osoby: {n}" }
-"{n} preferred components" = { one = "{n} preferovaná komponenta", other = "Preferované komponenty: {n}" }
-"{n} ready" = { one = "Připraveno: {n}", other = "Připraveno: {n}" }
-"{n} removed" = { one = "Odebráno: {n}", other = "Odebráno: {n}" }
-"{n} replies" = { one = "{n} odpověď", other = "Odpovědi: {n}" }
-"{n} rows" = { one = "{n} řádek", other = "Řádky: {n}" }
-"{n} styles" = { one = "{n} styl", other = "Styly: {n}" }
-"{n} variables" = { one = "{n} proměnná", other = "Proměnné: {n}" }
-"{n} weeks ago" = { one = "Před {n} týdnem", other = "Před {n} týdny" }
-"{n} years ago" = { one = "Před {n} rokem", other = "Před {n} lety" }
+"{n} people joined" = { one = "Připojila se {n} osoba", few = "Připojily se {n} osoby", other = "Připojilo se {n} osob" }
+"{n} preferred components" = { one = "{n} preferovaná komponenta", few = "{n} preferované komponenty", other = "{n} preferovaných komponent" }
+"{n} ready" = { one = "Připraveno: {n}", few = "Připraveno: {n}", other = "Připraveno: {n}" }
+"{n} removed" = { one = "Odebráno: {n}", few = "Odebráno: {n}", other = "Odebráno: {n}" }
+"{n} replies" = { one = "{n} odpověď", few = "{n} odpovědi", other = "{n} odpovědí" }
+"{n} rows" = { one = "{n} řádek", few = "{n} řádky", other = "{n} řádků" }
+"{n} styles" = { one = "{n} styl", few = "{n} styly", other = "{n} stylů" }
+"{n} variables" = { one = "{n} proměnná", few = "{n} proměnné", other = "{n} proměnných" }
+"{n} weeks ago" = { one = "Před {n} týdnem", few = "Před {n} týdny", other = "Před {n} týdny" }
+"{n} years ago" = { one = "Před {n} rokem", few = "Před {n} lety", other = "Před {n} lety" }
 "{n}d" = "{n} d"
 "{n}h" = "{n} h"
 "{n}m" = "{n} min"

crates/ui-egui/locales/de.toml

@@ -64,6 +64,7 @@ status = "draft — needs native review"
 "Add variant with a new value" = "Variante mit neuem Wert hinzufügen"
 "Added" = "Hinzugefügt"
 "Added the library \"{name}\"" = "Bibliothek „{name}“ hinzugefügt"
+"Adding to {name}" = "Hinzufügen zu {name}"
 "Adjust" = "Anpassen"
 "Adjustment presets" = "Vorgaben"
 "Advanced" = "Erweitert"
@@ -392,6 +393,9 @@ status = "draft — needs native review"
 "Drag the stroke to add a width point" = "Ziehen Sie an der Kontur, um einen Breitenpunkt hinzuzufügen"
 "Draw" = "Zeichnen"
 "Drawing tools" = "Zeichenwerkzeuge"
+"Drop a .figcraft, .fig, .json, .svg or image file." = "Legen Sie eine .figcraft-, .fig-, .json-, .svg- oder Bilddatei ab."
+"Drop to import" = "Zum Importieren ablegen"
+"Drop to open" = "Zum Öffnen ablegen"
 "Drop shadow" = "Schlagschatten"
 "Dual-licensed MIT OR Apache-2.0. Made by the ArtCraft team and community." = "Doppelt lizenziert unter MIT OR Apache-2.0. Entwickelt vom ArtCraft-Team und der Community."
 "Duo" = "Duo"
@@ -857,6 +861,8 @@ status = "draft — needs native review"
 "Open prototype preview" = "Prototyp-Vorschau öffnen"
 "Open variables ({count})" = "Variablen öffnen ({count})"
 "Opened “{name}” in a new tab" = "„{name}“ in neuem Tab geöffnet"
+"Opening the file…" = "Datei wird geöffnet…"
+"Opening {n} files as new files" = { one = "Wird als neue Datei geöffnet", other = "{n} Dateien werden als neue Dateien geöffnet" }
 "Open|comments" = "Offen"
 "Options" = "Optionen"
 "Orange" = "Orange"
@@ -1256,6 +1262,9 @@ status = "draft — needs native review"
 "Texts" = "Texte"
 "Texture" = "Textur"
 "The canvas previews colors in sRGB; exported PNG, JPG and WebP files are tagged Display P3." = "Die Arbeitsfläche zeigt Farben in sRGB an; exportierte PNG-, JPG- und WebP-Dateien werden als Display P3 gekennzeichnet."
+"The destination document is unavailable. Nothing was imported." = "Das Zieldokument ist nicht verfügbar. Es wurde nichts importiert."
+"The destination document was closed. Nothing was imported." = "Das Zieldokument wurde geschlossen. Es wurde nichts importiert."
+"The destination page was removed. Nothing was imported." = "Die Zielseite wurde entfernt. Es wurde nichts importiert."
 "The file is deleted from the server: nobody can open or join it from there again, and this can't be undone. Copies that are open stay with whoever has them." = "Die Datei wird vom Server gelöscht: Niemand kann sie von dort wieder öffnen oder ihr beitreten, und das lässt sich nicht rückgängig machen. Geöffnete Kopien bleiben bei denen, die sie haben."
 "The file now holds another library" = "Die Datei enthält jetzt eine andere Bibliothek"
 "The file now holds another library (\"{name}\")" = "Die Datei enthält jetzt eine andere Bibliothek („{name}“)"

crates/ui-egui/locales/en.toml

@@ -66,6 +66,7 @@ name = "English"
 "Add variant with a new value" = "Add variant with a new value"
 "Added" = "Added"
 "Added the library \"{name}\"" = "Added the library \"{name}\""
+"Adding to {name}" = "Adding to {name}"
 "Adjust" = "Adjust"
 "Adjustment presets" = "Adjustment presets"
 "Advanced" = "Advanced"
@@ -407,6 +408,9 @@ name = "English"
 "Draw" = "Draw"
 "Draw a frame" = "Draw a frame"
 "Drawing tools" = "Drawing tools"
+"Drop a .figcraft, .fig, .json, .svg or image file." = "Drop a .figcraft, .fig, .json, .svg or image file."
+"Drop to import" = "Drop to import"
+"Drop to open" = "Drop to open"
 "Drop shadow" = "Drop shadow"
 "Dual-licensed MIT OR Apache-2.0. Made by the ArtCraft team and community." = "Dual-licensed MIT OR Apache-2.0. Made by the ArtCraft team and community."
 "Duo" = "Duo"
@@ -900,6 +904,8 @@ name = "English"
 "Open prototype preview" = "Open prototype preview"
 "Open variables ({count})" = "Open variables ({count})"
 "Opened “{name}” in a new tab" = "Opened “{name}” in a new tab"
+"Opening the file…" = "Opening the file…"
+"Opening {n} files as new files" = { one = "Opening as a new file", other = "Opening {n} files as new files" }
 "Open|comments" = "Open"
 "Options" = "Options"
 "Orange" = "Orange"
@@ -1320,6 +1326,9 @@ name = "English"
 "Texts" = "Texts"
 "Texture" = "Texture"
 "The canvas previews colors in sRGB; exported PNG, JPG and WebP files are tagged Display P3." = "The canvas previews colors in sRGB; exported PNG, JPG and WebP files are tagged Display P3."
+"The destination document is unavailable. Nothing was imported." = "The destination document is unavailable. Nothing was imported."
+"The destination document was closed. Nothing was imported." = "The destination document was closed. Nothing was imported."
+"The destination page was removed. Nothing was imported." = "The destination page was removed. Nothing was imported."
 "The file is deleted from the server: nobody can open or join it from there again, and this can't be undone. Copies that are open stay with whoever has them." = "The file is deleted from the server: nobody can open or join it from there again, and this can't be undone. Copies that are open stay with whoever has them."
 "The file now holds another library" = "The file now holds another library"
 "The file now holds another library (\"{name}\")" = "The file now holds another library (\"{name}\")"

crates/ui-egui/locales/es.toml

@@ -68,6 +68,7 @@ status = "draft — needs native review"
 "Add variant with a new value" = "Añadir variante con un valor nuevo"
 "Added" = "Añadido"
 "Added the library \"{name}\"" = "Biblioteca \"{name}\" añadida"
+"Adding to {name}" = "Añadiendo a {name}"
 "Adjust" = "Ajustar"
 "Adjustment presets" = "Preajustes"
 "Advanced" = "Avanzado"
@@ -408,6 +409,9 @@ status = "draft — needs native review"
 "Draw" = "Dibujar"
 "Draw a frame" = "Dibuja un marco"
 "Drawing tools" = "Herramientas de dibujo"
+"Drop a .figcraft, .fig, .json, .svg or image file." = "Suelta un archivo .figcraft, .fig, .json, .svg o de imagen."
+"Drop to import" = "Suelta para importar"
+"Drop to open" = "Suelta para abrir"
 "Drop shadow" = "Sombra paralela"
 "Dual-licensed MIT OR Apache-2.0. Made by the ArtCraft team and community." = "Con doble licencia MIT OR Apache-2.0. Hecho por el equipo y la comunidad de ArtCraft."
 "Duo" = "Duo"
@@ -901,6 +905,8 @@ status = "draft — needs native review"
 "Open prototype preview" = "Abrir vista previa del prototipo"
 "Open variables ({count})" = "Abrir variables ({count})"
 "Opened “{name}” in a new tab" = "“{name}” abierta en una pestaña nueva"
+"Opening the file…" = "Abriendo el archivo…"
+"Opening {n} files as new files" = { one = "Abriendo como archivo nuevo", other = "Abriendo {n} archivos como archivos nuevos" }
 "Open|comments" = "Abiertos"
 "Options" = "Opciones"
 "Orange" = "Naranja"
@@ -1321,6 +1327,9 @@ status = "draft — needs native review"
 "Texts" = "Textos"
 "Texture" = "Textura"
 "The canvas previews colors in sRGB; exported PNG, JPG and WebP files are tagged Display P3." = "El lienzo muestra los colores en sRGB; los archivos PNG, JPG y WebP exportados se etiquetan como Display P3."
+"The destination document is unavailable. Nothing was imported." = "El documento de destino no está disponible. No se importó nada."
+"The destination document was closed. Nothing was imported." = "Se cerró el documento de destino. No se importó nada."
+"The destination page was removed. Nothing was imported." = "Se eliminó la página de destino. No se importó nada."
 "The file is deleted from the server: nobody can open or join it from there again, and this can't be undone. Copies that are open stay with whoever has them." = "El archivo se elimina del servidor: nadie podrá volver a abrirlo ni unirse a él desde allí, y no se puede deshacer. Las copias abiertas se quedan con quien las tenga."
 "The file now holds another library" = "El archivo ahora contiene otra biblioteca"
 "The file now holds another library (\"{name}\")" = "El archivo ahora contiene otra biblioteca (\"{name}\")"

crates/ui-egui/src/canvas.rs

@@ -183,10 +183,13 @@ pub fn show(app: &mut FigApp, ui: &mut Ui, worker: &mut Worker) {
         }
     }
     let own_cursor = input(app, ui, &resp);
+    crate::drop_overlay(&ctx, ctx.content_rect(), tr("Drop to import"));
     crate::guides::end_released(&ctx);
     crate::live::track_pointer(app, &ctx);
     app.sync_preedit();
-    request_render(app, worker, ppp);
+    // Retained rendering snaps the view outward and adds one pixel on each axis.
+    let max_texture_side = (ctx.input(|i| i.max_texture_side).min(16_384) as u32).saturating_sub(1).max(1);
+    request_render(app, worker, ppp, max_texture_side);
     // Every finished render is shown, even when a newer one is already on its way: renders finish
     // in order, and an edit every frame (a drag) would otherwise never show until it stopped.
     let shown = app.session.ds().map(|ds| (ds.uid, ds.page)).ok();
@@ -322,11 +325,11 @@ fn covers(outer: &figcraft_render::View, inner: &figcraft_render::View) -> bool
     o.x0 <= i.x0 + eps && o.y0 <= i.y0 + eps && o.x1 >= i.x1 - eps && o.y1 >= i.y1 - eps
 }
 
-fn request_render(app: &mut FigApp, worker: &mut Worker, ppp: f32) {
+fn request_render(app: &mut FigApp, worker: &mut Worker, ppp: f32, max_texture_side: u32) {
     let Ok(ds) = app.session.ds() else { return };
     let rect = app.canvas.rect;
     let (mut ox, mut oy) = ds.view.origin();
-    let (scale, w, h) = if let Some(k) = ds.view.pixel_preview_scale() {
+    let (scale, visible_w, visible_h) = if let Some(k) = ds.view.pixel_preview_scale() {
         // Pixel preview: render `k` pixels per page unit from a whole-pixel origin, shown magnified
         // without smoothing.
         (ox, oy) = ((ox * k).floor() / k, (oy * k).floor() / k);
@@ -340,12 +343,20 @@ fn request_render(app: &mut FigApp, worker: &mut Worker, ppp: f32) {
     let outlined = if ds.view.outlines_selection { ds.selection.clone() } else { vec![] };
     let proof = ds.view.proof_srgb && !doc.color_profile.is_srgb();
     let outline_extras = figcraft_render::Outline { hidden: ds.view.outline_hidden, bounds: ds.view.outline_bounds, light: false };
+    // Render beyond the visible viewport. During a pan the previous texture then still covers
+    // the screen while the worker renders newly exposed content. Request a new buffer before the
+    // visible area reaches its edge, rather than exposing an empty strip each pointer move.
+    let margin = overscan_margin(visible_w, visible_h, max_texture_side);
+    let origin = (ox, oy);
+    let visible = (visible_w, visible_h);
+    let requested = (ox - f64::from(margin) / scale, oy - f64::from(margin) / scale);
+    let size = (visible_w.saturating_add(margin * 2).min(max_texture_side), visible_h.saturating_add(margin * 2).min(max_texture_side));
     let key = JobKey {
         doc: Arc::as_ptr(&doc) as usize,
         page: ds.page,
-        origin: ((ox * 1000.0) as i64, (oy * 1000.0) as i64),
+        origin: ((requested.0 * 1000.0) as i64, (requested.1 * 1000.0) as i64),
         scale: (scale * 10000.0) as i64,
-        size: (w, h),
+        size,
         outline: ds.view.outlines,
         outline_extras,
         outlined: outlined.clone(),
@@ -354,13 +365,21 @@ fn request_render(app: &mut FigApp, worker: &mut Worker, ppp: f32) {
         fonts: figcraft_text::layout_generation(),
         proof,
     };
+    if let Some(previous) = &app.canvas.submitted {
+        let previous_origin = (previous.origin.0 as f64 / 1000.0, previous.origin.1 as f64 / 1000.0);
+        let same_content = JobKey { origin: previous.origin, size: previous.size, ..key.clone() } == *previous;
+        let covers = cached_render_covers(previous_origin, previous.size, origin, visible, scale);
+        if same_content && covers {
+            return;
+        }
+    }
     if app.canvas.submitted.as_ref() == Some(&key) {
         return;
     }
     let job = Job {
         doc,
         page: ds.page,
-        view: figcraft_render::View { origin: (ox, oy), scale, width: w.min(16384), height: h.min(16384) },
+        view: figcraft_render::View { origin: requested, scale, width: size.0, height: size.1 },
         outline: ds.view.outlines,
         outline_extras,
         outlined,
@@ -376,6 +395,53 @@ fn request_render(app: &mut FigApp, worker: &mut Worker, ppp: f32) {
     app.canvas.submitted = Some(key);
 }
 
+/// Leave a 96-pixel reserve so the next render starts before a pan reaches a cached edge.
+fn cached_render_covers(buffer_origin: (f64, f64), buffer_size: (u32, u32), view_origin: (f64, f64), view_size: (u32, u32), scale: f64) -> bool {
+    if !scale.is_finite() || scale <= 0.0 {
+        return false;
+    }
+    let guard_x = 96.0_f64.min(f64::from(buffer_size.0.saturating_sub(view_size.0)) / 4.0) / scale;
+    let guard_y = 96.0_f64.min(f64::from(buffer_size.1.saturating_sub(view_size.1)) / 4.0) / scale;
+    view_origin.0 >= buffer_origin.0 + guard_x
+        && view_origin.1 >= buffer_origin.1 + guard_y
+        && view_origin.0 + f64::from(view_size.0) / scale <= buffer_origin.0 + f64::from(buffer_size.0) / scale - guard_x
+        && view_origin.1 + f64::from(view_size.1) / scale <= buffer_origin.1 + f64::from(buffer_size.1) / scale - guard_y
+}
+
+/// Bound the extra rendered area to about 1.6 times the visible area. A fixed large margin can
+/// multiply the pixel count several-fold on a narrow or small viewport.
+fn overscan_margin(width: u32, height: u32, max_texture_side: u32) -> u32 {
+    width.min(height).saturating_div(8).min(128).min(max_texture_side.saturating_sub(width.max(height)) / 2)
+}
+
+#[cfg(test)]
+#[test]
+fn pan_uses_cached_pixels_until_the_refill_boundary() {
+    let margin = overscan_margin(1000, 800, 16_383);
+    assert_eq!(margin, 100);
+    let buffer = (-f64::from(margin), -f64::from(margin));
+    let size = (1000 + 2 * margin, 800 + 2 * margin);
+    assert!(cached_render_covers(buffer, size, (0.0, 0.0), (1000, 800), 1.0));
+    assert!(cached_render_covers(buffer, size, (50.0, 0.0), (1000, 800), 1.0));
+    assert!(!cached_render_covers(buffer, size, (80.0, 0.0), (1000, 800), 1.0));
+    assert!(!cached_render_covers(buffer, size, (-80.0, 0.0), (1000, 800), 1.0));
+    assert!(cached_render_covers((-24.0, -24.0), (1048, 848), (10.0, 0.0), (1000, 800), 1.0));
+    assert!(!cached_render_covers((-24.0, -24.0), (1048, 848), (19.0, 0.0), (1000, 800), 1.0));
+}
+
+#[cfg(test)]
+#[test]
+fn overscan_stays_within_texture_and_pixel_budget() {
+    for (width, height, limit) in [(1000, 800, 16_383), (390, 844, 16_383), (2560, 1440, 16_383), (1000, 800, 1060)] {
+        let margin = overscan_margin(width, height, limit);
+        assert!(width + 2 * margin <= limit || width > limit);
+        assert!(height + 2 * margin <= limit || height > limit);
+        let rendered = u64::from(width + 2 * margin) * u64::from(height + 2 * margin);
+        let visible = u64::from(width) * u64::from(height);
+        assert!(rendered * 5 <= visible * 8); // At most 1.6× the visible pixels.
+    }
+}
+
 /// The zoom tool while Z is held (Alt: zoom out): a click zooms a step about the pointer, a drag
 /// zooms to the dragged area. Takes the pointer from the other tools while it's active.
 fn zoom_tool(app: &mut FigApp, ui: &Ui, resp: &egui::Response, pos: Pos2, mods: egui::Modifiers, typing: bool) -> bool {
@@ -414,19 +480,27 @@ fn input(app: &mut FigApp, ui: &mut Ui, resp: &egui::Response) -> bool {
     let editing_text = app.session.ds().map(|d| d.text_edit.is_some()).unwrap_or(false);
     let typing_elsewhere = crate::a11y::field_focused(&ctx);
     app.canvas.space_pan = space && !editing_text && !typing_elsewhere;
-    // Dropped files import onto the canvas.
+    // Dropped files import onto the canvas, behind a card while they do ([`crate::pending_open`]).
     let dropped = ctx.input(|i| i.raw.dropped_files.clone());
     for f in dropped {
         let path = f.path().to_path_buf();
         let pt = hover_pos.map(|h| app.to_page(h)).unwrap_or_default();
-        if path.exists() {
-            app.run("file.import", json!({"path": path.to_string_lossy(), "x": pt.x, "y": pt.y}));
-        } else if let Some(bytes) = dropped_bytes(&f) {
+        let name = path.file_name().map(|n| n.to_string_lossy().to_string()).unwrap_or_else(|| "dropped.png".into());
+        let params = if path.exists() {
+            json!({"path": path.to_string_lossy(), "x": pt.x, "y": pt.y})
+        } else if let Some(bytes) = crate::dropped_bytes(&f) {
             use base64::Engine as _;
             let b64 = base64::engine::general_purpose::STANDARD.encode(&bytes);
-            let name = path.file_name().map(|n| n.to_string_lossy().to_string()).unwrap_or_else(|| "dropped.png".into());
-            app.run("file.import", json!({"data": b64, "name": name, "x": pt.x, "y": pt.y}));
-        }
+            json!({"data": b64, "name": name, "x": pt.x, "y": pt.y})
+        } else {
+            continue;
+        };
+        let Some(target) =
+            app.session.ds().ok().map(|doc| crate::pending_open::ImportTarget { uid: doc.uid, page: doc.page, name: doc.doc.name.clone() })
+        else {
+            continue;
+        };
+        app.ui.pending_opens.push(crate::pending_open::PendingOpen { label: name, params, command: "file.import", target: Some(target) });
     }
     let Some(pos) = hover_pos.filter(|p| app.canvas.rect.contains(*p)) else {
         // A drag released off the canvas, or off the window, ends where the pointer was last seen.
@@ -585,17 +659,6 @@ pub fn open_context_menu(app: &mut FigApp, pos: Pos2, deep: bool) {
     app.ui.context_menu = Some((pos, app.session.selection()));
 }
 
-#[cfg(not(target_arch = "wasm32"))]
-fn dropped_bytes(f: &std::sync::Arc<dyn egui::DroppedFile + Send + Sync>) -> Option<Vec<u8>> {
-    f.bytes().ok()
-}
-
-#[cfg(target_arch = "wasm32")]
-fn dropped_bytes(_f: &std::sync::Arc<dyn egui::DroppedFile + Send + Sync>) -> Option<Vec<u8>> {
-    // Browser drops arrive asynchronously; not supported yet.
-    None
-}
-
 fn stroke(c: Color32, w: f32) -> Stroke {
     Stroke::new(w, c)
 }

crates/ui-egui/src/dialogs.rs

@@ -158,6 +158,8 @@ pub fn keys(app: &mut FigApp, ctx: &Context) {
 }
 
 pub fn show(app: &mut FigApp, ctx: &Context) {
+    // Dropped files waiting to open: their card, then (once it has shown) the files.
+    crate::pending_open::pending_opens(app, ctx);
     let t = Tokens::get(ctx);
     if app.ui.about {
         let mut open = true;

crates/ui-egui/src/duplicate_paint_tests.rs

@@ -0,0 +1,71 @@
+//! A duplicate's fill is its own: recolouring it, with the picker that was open on the original,
+//! leaves the original as it was (#586).
+
+use figcraft_doc::NodeId;
+use figcraft_engine::Session;
+use serde_json::json;
+
+use crate::colorpicker::PickerTarget;
+use crate::layers_drag_tests::Ui;
+
+fn id(v: &serde_json::Value) -> NodeId {
+    NodeId(v["id"].as_u64().or_else(|| v["ids"][0].as_u64()).unwrap())
+}
+
+fn fill(u: &Ui, id: NodeId) -> String {
+    u.app.session.doc().unwrap().node(id).unwrap().fills[0].solid_color().unwrap().to_css_hex()
+}
+
+/// A red rectangle or pen path, selected, with the colour picker of its fill open.
+fn red(vector: bool) -> (Ui, NodeId) {
+    let mut s = Session::new();
+    let a = if vector {
+        id(&s.execute("vector.create", &json!({"points": [[0, 0], [60, 0], [30, 50]], "closed": true})).unwrap())
+    } else {
+        id(&s.execute("shape.rectangle", &json!({"x": 0, "y": 0, "width": 40, "height": 40})).unwrap())
+    };
+    s.execute("fill.set", &json!({"ids": [a], "color": "#FF0000"})).unwrap();
+    s.execute("select.set", &json!({"ids": [a]})).unwrap();
+    let mut u = Ui::new(s);
+    u.app.ui.picker = Some(PickerTarget::Paint { fills: true, index: 0, ids: vec![a] });
+    u.frame(vec![]);
+    (u, a)
+}
+
+/// Duplicate the selection the way `how` names, moved clear of the original; the copy's id.
+fn duplicate(u: &mut Ui, how: &str) -> NodeId {
+    let copy = match how {
+        "duplicate" => id(&u.app.session.execute("edit.duplicate", &json!({"dx": 100})).unwrap()),
+        _ => {
+            u.app.session.execute("edit.copy", &json!({})).unwrap();
+            id(&u.app.session.execute("edit.paste", &json!({"x": 100, "y": 0})).unwrap())
+        }
+    };
+    u.frame(vec![]);
+    u.frame(vec![]);
+    copy
+}
+
+#[test]
+fn recolouring_a_duplicate_leaves_the_original() {
+    for vector in [false, true] {
+        for how in ["duplicate", "paste"] {
+            let (mut u, a) = red(vector);
+            let b = duplicate(&mut u, how);
+            assert_ne!(a, b);
+            assert_eq!(u.app.session.selection(), vec![b], "{how} selects the copy");
+            // The picker opened for the original doesn't follow it onto the copy's edits.
+            let picker = u.app.ui.picker.clone();
+            assert!(
+                !matches!(&picker, Some(PickerTarget::Paint { ids, .. }) if ids.contains(&a)),
+                "vector {vector}, {how}: the picker still edits the original: {picker:?}"
+            );
+            // Recolour the selection as the fill row does.
+            u.app.ui.picker = Some(PickerTarget::Paint { fills: true, index: 0, ids: u.app.session.selection() });
+            u.app.session.execute("fill.set", &json!({"ids": u.app.session.selection(), "color": "#0000FF"})).unwrap();
+            u.frame(vec![]);
+            assert_eq!(fill(&u, b), "#0000FF", "vector {vector}, {how}");
+            assert_eq!(fill(&u, a), "#FF0000", "vector {vector}, {how}: the original keeps its fill");
+        }
+    }
+}

crates/ui-egui/src/home.rs

@@ -137,6 +137,7 @@ fn listed(ui: &mut Ui, t: &Tokens, id: Id, height: f32, row: &FileRow) -> bool {
 
 pub fn show(app: &mut FigApp, ui: &mut Ui) {
     let t = Tokens::get(ui.ctx());
+    dropped(app, ui.ctx());
     egui::CentralPanel::default().frame(egui::Frame::NONE.fill(t.panel)).show(ui, |ui| {
         let rect = ui.max_rect();
         let left = Rect::from_min_size(rect.min, vec2(SIDEBAR, rect.height()));
@@ -162,6 +163,34 @@ pub fn show(app: &mut FigApp, ui: &mut Ui) {
             });
         });
     });
+    // The whole window is the drop target, not only the canvas.
+    crate::drop_overlay(ui.ctx(), ui.ctx().content_rect(), tr("Drop to open"));
+}
+
+/// Files dropped on the home screen: each one the app opens becomes a document of its own (the
+/// editor then shows it), behind an "Opening as a new file" card ([`crate::pending_open`]); anything
+/// else is turned away with a toast. A file that fails to open keeps the engine's own error.
+fn dropped(app: &mut FigApp, ctx: &egui::Context) {
+    let files = ctx.input(|i| i.raw.dropped_files.clone());
+    for f in files {
+        let path = f.path().to_path_buf();
+        if !crate::opens(&path) {
+            app.toast(tr("Drop a .figcraft, .fig, .json, .svg or image file."));
+            continue;
+        }
+        // `opens` saw an extension, so there is a file name to tell the format by.
+        let name = path.file_name().map(|n| n.to_string_lossy().to_string()).unwrap_or_default();
+        let params = if path.exists() {
+            json!({"path": path.to_string_lossy()})
+        } else if let Some(bytes) = crate::dropped_bytes(&f) {
+            use base64::Engine as _;
+            let data = base64::engine::general_purpose::STANDARD.encode(&bytes);
+            json!({"data": data, "name": name})
+        } else {
+            continue;
+        };
+        app.ui.pending_opens.push(crate::pending_open::PendingOpen { label: name, params, command: "file.open", target: None });
+    }
 }
 
 fn sidebar(app: &mut FigApp, ui: &mut Ui, t: &Tokens, left: Rect) {

crates/ui-egui/src/home_tests.rs

@@ -327,3 +327,244 @@ fn tab_walks_the_sidebar_in_order_before_a_sections_controls() {
     let at = |name: &str| names.iter().position(|n| n == name).unwrap_or_else(|| panic!("Tab never reached {name:?}: {names:?}"));
     assert!(at("Recents") < at("Online") && at("Online") < at("Templates") && at("Templates") < at("Open file"), "{names:?}");
 }
+
+/// A temporary directory of its own for a test's files, removed with them when dropped.
+struct Temp(std::path::PathBuf);
+
+impl Temp {
+    fn new() -> Self {
+        static NEXT: std::sync::atomic::AtomicU64 = std::sync::atomic::AtomicU64::new(0);
+        let stamp = std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH).unwrap().as_nanos();
+        let n = NEXT.fetch_add(1, std::sync::atomic::Ordering::Relaxed);
+        let path = std::env::temp_dir().join(format!("figcraft-home-drop-{}-{stamp}-{n}", std::process::id()));
+        std::fs::create_dir(&path).unwrap();
+        Self(path)
+    }
+
+    fn path(&self, name: &str) -> std::path::PathBuf {
+        self.0.join(name)
+    }
+}
+
+impl Drop for Temp {
+    fn drop(&mut self) {
+        if let Ok(files) = std::fs::read_dir(&self.0) {
+            for file in files.flatten() {
+                let _ = std::fs::remove_file(file.path());
+            }
+        }
+        let _ = std::fs::remove_dir(&self.0);
+    }
+}
+
+/// A file dropped on the window, as the windowing backend hands it over (read from its path).
+#[derive(Debug)]
+struct Dropped(std::path::PathBuf);
+
+impl egui::DroppedFile for Dropped {
+    fn path(&self) -> &std::path::Path {
+        &self.0
+    }
+
+    fn bytes(&self) -> Result<Vec<u8>, String> {
+        std::fs::read(&self.0).map_err(|e| e.to_string())
+    }
+}
+
+/// Drag `path` over the window (one frame: what it shows), then drop it (one frame).
+fn drop_file(u: &mut Ui, path: &std::path::Path) -> Vec<Shape> {
+    let hovered = egui::HoveredFile { path: Some(path.to_path_buf()), mime: String::new() };
+    let hovering = flat(&u.frame_raw(egui::RawInput { hovered_files: vec![hovered], ..Default::default() }).shapes);
+    let file: egui::DroppedFileHandle = std::sync::Arc::new(Dropped(path.to_path_buf()));
+    u.frame_raw(egui::RawInput { dropped_files: vec![file], ..Default::default() });
+    hovering
+}
+
+#[test]
+fn dropping_a_native_file_on_the_home_screen_opens_it() {
+    let dir = Temp::new();
+    let path = dir.path("Dropped.figcraft");
+    let mut saved = Session::new();
+    saved.execute("file.saveAs", &json!({"path": path.to_string_lossy()})).unwrap();
+    assert!(path.exists());
+    let mut u = first_run();
+    u.app.ui.home = true;
+    let s = drop_file(&mut u, &path);
+    assert!(has_text(&s, "Drop to open"), "dragging over the home screen says what a drop does");
+    // The file waits behind its card, which is on screen before it opens.
+    assert_eq!(u.app.ui.pending_opens.len(), 1);
+    assert!(u.app.session.docs.is_empty(), "nothing opens in the frame of the drop");
+    let s = flat(&u.frame_output(vec![]).shapes);
+    assert!(has_text(&s, "Opening as a new file") && has_text(&s, "Opening the file…") && has_text(&s, "Dropped.figcraft"), "the card shows");
+    assert_eq!(u.app.ui.pending_opens.len(), 1);
+    assert!(u.app.session.docs.is_empty(), "the card is drawn first");
+    assert_eq!(u.app.inspect()["pendingOpens"], 1);
+    u.frame(vec![]);
+    assert!(u.app.ui.pending_opens.is_empty());
+    assert_eq!(u.app.session.docs.len(), 1);
+    assert_eq!(u.app.session.docs[0].path.as_deref(), Some(path.to_string_lossy().as_ref()));
+    assert!(!u.app.ui.home, "and the editor shows it");
+    assert!(u.app.ui.toast.as_ref().is_none_or(|t| !t.0.starts_with("Drop a")), "no turning away");
+}
+
+#[test]
+fn dropping_a_native_file_on_canvas_keeps_its_receiving_document_after_tab_switch() {
+    let dir = Temp::new();
+    let path = dir.path("Canvas import.figcraft");
+    let mut source = Session::new();
+    source.execute("file.saveAs", &json!({"path": path.to_string_lossy()})).unwrap();
+
+    let mut session = Session::new();
+    let target_uid = session.ds().unwrap().uid;
+    let target_page = session.page().unwrap();
+    let target_name = session.doc().unwrap().name.clone();
+    session.execute("file.new", &json!({"name": "Other tab"})).unwrap();
+    let other_uid = session.ds().unwrap().uid;
+    session.active = 0;
+    let mut u = Ui::new(session);
+    u.app.ui.home = false;
+    u.frame(vec![]);
+    let pos = u.app.canvas.rect.center();
+    let file: egui::DroppedFileHandle = std::sync::Arc::new(Dropped(path.clone()));
+    u.frame_raw(egui::RawInput { events: vec![Event::PointerMoved(pos)], dropped_files: vec![file], ..Default::default() });
+    let pending = u.app.ui.pending_opens.first().unwrap();
+    assert_eq!(pending.target.as_ref().map(|target| (target.uid, target.page)), Some((target_uid, target_page)));
+    assert_eq!(pending.target.as_ref().map(|target| target.name.as_str()), Some(target_name.as_str()));
+
+    u.frame(vec![]);
+    u.app.session.active = 1;
+    assert_eq!(u.app.session.ds().unwrap().uid, other_uid, "the UI switched tabs while the card was displayed");
+    assert_eq!(u.app.ui.pending_opens.len(), 1, "the switch happens before dispatch");
+    u.frame(vec![]);
+
+    assert_eq!(u.app.session.ds().unwrap().uid, other_uid, "the user's active tab stays in front");
+    assert_eq!(u.app.session.docs.iter().map(|doc| doc.doc.pages.len()).collect::<Vec<_>>(), [2, 1]);
+}
+
+#[test]
+fn canvas_import_uses_queued_page_and_restores_the_page_selected_while_waiting() {
+    let dir = Temp::new();
+    let path = dir.path("Queued.svg");
+    std::fs::write(&path, r##"<svg xmlns="http://www.w3.org/2000/svg" width="20" height="10"><rect width="20" height="10" fill="#f00"/></svg>"##)
+        .unwrap();
+
+    let mut session = Session::new();
+    let target_uid = session.ds().unwrap().uid;
+    let first_page = session.page().unwrap();
+    session.execute("page.add", &json!({"name": "Second page"})).unwrap();
+    let second_page = session.page().unwrap();
+    let second_page_shape = session.execute("node.create", &json!({"type": "rectangle", "x": 30, "y": 40, "width": 12, "height": 14})).unwrap()["id"]
+        .as_u64()
+        .map(figcraft_doc::NodeId)
+        .unwrap();
+    session.execute("page.select", &json!({"id": first_page})).unwrap();
+    session.execute("file.new", &json!({"name": "Other tab"})).unwrap();
+    let other_uid = session.ds().unwrap().uid;
+    session.active = 0;
+    let mut u = Ui::new(session);
+    u.app.ui.home = false;
+    u.frame(vec![]);
+    let pos = u.app.canvas.rect.center();
+    let file: egui::DroppedFileHandle = std::sync::Arc::new(Dropped(path));
+    u.frame_raw(egui::RawInput { events: vec![Event::PointerMoved(pos)], dropped_files: vec![file], ..Default::default() });
+    let queued_params = u.app.ui.pending_opens[0].params.clone();
+    assert_eq!(u.app.ui.pending_opens[0].target.as_ref().map(|target| (target.uid, target.page)), Some((target_uid, first_page)));
+
+    u.frame(vec![]);
+    u.app.session.execute("page.select", &json!({"id": second_page})).unwrap();
+    u.app.session.execute("select.set", &json!({"ids": [second_page_shape]})).unwrap();
+    u.app.session.active = 1;
+    u.frame(vec![]);
+    let target_index = u.app.session.docs.iter().position(|doc| doc.uid == target_uid).unwrap();
+    let imported = u.app.session.docs[target_index].doc.node(first_page).unwrap().children[0];
+    let doc = &u.app.session.docs[target_index].doc;
+    assert_eq!(doc.page_of(imported), Some(first_page));
+    let bounds = doc.world_bounds(imported).unwrap();
+    assert!((bounds.x0 - queued_params["x"].as_f64().unwrap()).abs() < 1.0);
+    assert!((bounds.y0 - queued_params["y"].as_f64().unwrap()).abs() < 1.0);
+    assert_eq!(doc.node(second_page).unwrap().children, [second_page_shape]);
+    assert_eq!(u.app.session.ds().unwrap().uid, other_uid);
+    assert_eq!(u.app.session.docs[target_index].page, second_page, "the page selected during the wait is restored");
+    assert_eq!(u.app.session.docs[target_index].selection, [second_page_shape], "the restored page keeps its selection");
+
+    u.app.session.active = target_index;
+    u.app.session.execute("edit.delete", &json!({})).unwrap();
+    let doc = &u.app.session.docs[target_index].doc;
+    assert!(doc.node(second_page).unwrap().children.is_empty(), "the next edit acts on the restored page selection");
+    assert_eq!(doc.node(first_page).unwrap().children.len(), 1, "the imported object on the queued page remains");
+}
+
+#[test]
+fn queued_canvas_import_is_cancelled_if_its_page_is_deleted() {
+    let dir = Temp::new();
+    let path = dir.path("Removed target.svg");
+    std::fs::write(&path, r#"<svg xmlns="http://www.w3.org/2000/svg" width="20" height="10"><rect width="20" height="10"/></svg>"#).unwrap();
+
+    let mut session = Session::new();
+    let target_uid = session.ds().unwrap().uid;
+    session.execute("page.add", &json!({"name": "Keep this page"})).unwrap();
+    let target_page = session.page().unwrap();
+    session.execute("file.new", &json!({"name": "Other tab"})).unwrap();
+    let other_uid = session.ds().unwrap().uid;
+    session.active = 0;
+    let mut u = Ui::new(session);
+    u.app.ui.home = false;
+    u.frame(vec![]);
+    let pos = u.app.canvas.rect.center();
+    let file: egui::DroppedFileHandle = std::sync::Arc::new(Dropped(path));
+    u.frame_raw(egui::RawInput { events: vec![Event::PointerMoved(pos)], dropped_files: vec![file], ..Default::default() });
+    u.app.session.execute("page.delete", &json!({"id": target_page})).unwrap();
+    let other_before = u.app.session.docs.iter().find(|doc| doc.uid == other_uid).unwrap().doc.clone();
+    u.app.ui.pending_open_frames = 2;
+    crate::pending_open::pending_opens(&mut u.app, &u.ctx);
+    assert_eq!(u.app.session.docs.iter().find(|doc| doc.uid == other_uid).unwrap().doc, other_before);
+    let target = u.app.session.docs.iter().find(|doc| doc.uid == target_uid).unwrap();
+    assert_eq!(target.doc.pages.len(), 1);
+    assert!(!target.doc.nodes().any(|node| node.name == "Removed target"));
+    assert!(u.app.ui.last_error.as_deref().is_some_and(|error| error.contains("destination page was removed")));
+}
+
+#[test]
+fn queued_canvas_import_is_cancelled_if_its_document_is_closed() {
+    let dir = Temp::new();
+    let path = dir.path("Closed target.svg");
+    std::fs::write(&path, r#"<svg xmlns="http://www.w3.org/2000/svg" width="20" height="10"><rect width="20" height="10"/></svg>"#).unwrap();
+
+    let mut session = Session::new();
+    let target_uid = session.ds().unwrap().uid;
+    session.execute("file.new", &json!({"name": "Other tab"})).unwrap();
+    let other_uid = session.ds().unwrap().uid;
+    session.active = 0;
+    let mut u = Ui::new(session);
+    u.app.ui.home = false;
+    u.frame(vec![]);
+    let pos = u.app.canvas.rect.center();
+    let file: egui::DroppedFileHandle = std::sync::Arc::new(Dropped(path));
+    u.frame_raw(egui::RawInput { events: vec![Event::PointerMoved(pos)], dropped_files: vec![file], ..Default::default() });
+    u.frame(vec![]);
+    let other_before = u.app.session.docs.iter().find(|doc| doc.uid == other_uid).unwrap().doc.clone();
+    let target_index = u.app.session.docs.iter().position(|doc| doc.uid == target_uid).unwrap();
+    u.app.session.docs.remove(target_index);
+    u.app.session.active = 0;
+
+    while !u.app.ui.pending_opens.is_empty() {
+        u.frame(vec![]);
+    }
+    assert_eq!(u.app.session.docs.len(), 1);
+    assert_eq!(u.app.session.ds().unwrap().uid, other_uid);
+    assert_eq!(u.app.session.doc().unwrap(), other_before.as_ref());
+    assert!(u.app.ui.last_error.as_deref().is_some_and(|error| error.contains("destination document was closed")));
+}
+
+#[test]
+fn dropping_an_unsupported_file_on_the_home_screen_opens_nothing() {
+    let dir = Temp::new();
+    let path = dir.path("unsupported.txt");
+    std::fs::write(&path, "not a design").unwrap();
+    let mut u = first_run();
+    u.app.ui.home = true;
+    drop_file(&mut u, &path);
+    assert!(u.app.session.docs.is_empty());
+    assert!(u.app.ui.home);
+    assert_eq!(u.app.ui.toast.as_ref().map(|t| t.0.as_str()), Some("Drop a .figcraft, .fig, .json, .svg or image file."));
+}

crates/ui-egui/src/i18n.rs

@@ -163,6 +163,9 @@ enum Plural {
 /// CLDR integer rules. Existing one/other catalogs may omit the extra forms.
 fn plural(code: &str, n: usize) -> Plural {
     match code {
+        "cs" if n == 1 => Plural::One,
+        "cs" if (2..=4).contains(&n) => Plural::Few,
+        "cs" => Plural::Other,
         "ru" if n % 10 == 1 && n % 100 != 11 => Plural::One,
         "ru" if (2..=4).contains(&(n % 10)) && !(12..=14).contains(&(n % 100)) => Plural::Few,
         "ru" => Plural::Many,
@@ -174,7 +177,7 @@ fn plural(code: &str, n: usize) -> Plural {
 }
 
 // CLDR's million-count "many" in French, Spanish and Portuguese still reads their existing
-// "other" wording. Only Russian currently supplies separate few/many forms.
+// "other" wording. Czech supplies separate few forms; Russian supplies few/many forms.
 
 /// Whether count `n` takes the "one" form: 0 and 1 in French and Brazilian Portuguese, never in
 /// Japanese, Korean and Chinese (no plural forms: always "other"), 1 elsewhere (CLDR's integer rules).

crates/ui-egui/src/i18n_tests.rs

@@ -419,6 +419,26 @@ fn the_key_scanner_reads_rust_literals() {
     assert_eq!(literals(src), vec!["A \"b\"", "C {n}", "DE"]);
 }
 
+#[test]
+fn czech_integer_plurals() {
+    let cs = LANGS.iter().position(|l| l.code == "cs").unwrap();
+    assert_eq!(plural("cs", 1), Plural::One);
+    assert_eq!(fill(counted(cs, "{n} layers", 1), &[("n", &1)]), "1 vrstva");
+    for n in [2, 3, 4] {
+        assert_eq!(plural("cs", n), Plural::Few, "{n}");
+        assert_eq!(fill(counted(cs, "{n} layers", n), &[("n", &n)]), format!("{n} vrstvy"));
+    }
+    for n in [0, 5, 11, 12, 21, 22, 100, 1_000_000] {
+        assert_eq!(plural("cs", n), Plural::Other, "{n}");
+        assert_eq!(fill(counted(cs, "{n} layers", n), &[("n", &n)]), format!("{n} vrstev"));
+    }
+    for (key, text) in LANGS[cs].ui {
+        if let Text::Plural { one, few, .. } = text {
+            assert!(one.is_some() && few.is_some(), "{key}: missing Czech plural forms");
+        }
+    }
+}
+
 #[test]
 fn russian_language_tags_and_integer_plurals() {
     let ru = LANGS.iter().position(|l| l.code == "ru").unwrap();

crates/ui-egui/src/idle_tests.rs

@@ -311,6 +311,26 @@ fn an_animated_gif_wakes_only_the_presenter_and_only_at_its_frames() {
     h.assert_idle("the presenter closed");
 }
 
+#[test]
+fn cjk_names_are_looked_for_in_edits_not_on_every_pan() {
+    let mut s = Session::new();
+    let a = s.execute("shape.rectangle", &json!({"x": 0, "y": 0, "width": 10, "height": 10})).unwrap()["id"].clone();
+    let b = s.execute("shape.rectangle", &json!({"x": 20, "y": 0, "width": 10, "height": 10})).unwrap()["id"].clone();
+    s.execute("node.set", &json!({"id": a, "name": "中文"})).unwrap();
+    let mut h = Harness::new(s);
+    let ctx = h.ctx.clone();
+    assert_eq!(h.app.cjk_needed(&ctx, 0), crate::cjk::HAN, "the first look reads every name");
+    // A pan or zoom changes the revision but not the document: its hundreds of thousands of
+    // names aren't read again (that took 70 ms a frame in a 900 000-layer file).
+    let revision = h.app.session.ds().unwrap().revision;
+    h.run("view.set", json!({"zoom": 2, "cx": 300, "cy": 200}));
+    assert_ne!(h.app.session.ds().unwrap().revision, revision);
+    assert_eq!(h.app.cjk_needed(&ctx, 0), 0);
+    // An edit is read: the layers it changed.
+    h.run("node.set", json!({"id": b, "name": "한국어"}));
+    assert_eq!(h.app.cjk_needed(&ctx, 0), crate::cjk::HANGUL);
+}
+
 #[test]
 fn a_hidden_window_answers_requests_that_need_no_frame() {
     // #269: minimised or covered, the window draws no frames, but the app's logic still runs: it

crates/ui-egui/src/layers_drag_tests.rs

@@ -35,10 +35,15 @@ impl Ui {
 
     /// [`Self::frame_output`] with `modifiers` held.
     pub(crate) fn frame_with(&mut self, mut events: Vec<Event>, modifiers: egui::Modifiers) -> egui::FullOutput {
-        self.time += 1.0 / 60.0;
         events.insert(0, Event::ModifiersChanged(modifiers));
-        let input =
-            RawInput { screen_rect: Some(Rect::from_min_size(Pos2::ZERO, vec2(1440.0, 900.0))), time: Some(self.time), events, ..Default::default() };
+        self.frame_raw(RawInput { events, ..Default::default() })
+    }
+
+    /// One frame of `raw` input (files dropped on or hovered over the window, say), on the test
+    /// screen and clock.
+    pub(crate) fn frame_raw(&mut self, raw: RawInput) -> egui::FullOutput {
+        self.time += 1.0 / 60.0;
+        let input = RawInput { screen_rect: Some(Rect::from_min_size(Pos2::ZERO, vec2(1440.0, 900.0))), time: Some(self.time), ..raw };
         let app = &mut self.app;
         let mut out = self.ctx.run_ui(input, |ui| app.ui(ui));
         out.textures_delta.clear();

crates/ui-egui/src/lib.rs

@@ -40,6 +40,7 @@ pub mod live_text;
 pub mod measure_overlay;
 pub mod menus;
 pub mod online;
+pub mod pending_open;
 pub mod plugins_ui;
 pub mod present;
 pub mod proto_canvas;
@@ -87,6 +88,8 @@ mod cursors_tests;
 #[cfg(test)]
 mod dev_mode_tests;
 #[cfg(test)]
+mod duplicate_paint_tests;
+#[cfg(test)]
 mod export_preview_tests;
 #[cfg(test)]
 mod field_tests;
@@ -187,7 +190,7 @@ mod windows_tests;
 
 use std::collections::BTreeSet;
 use std::future::Future;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 use std::pin::Pin;
 use std::sync::Arc;
 use std::task::{Context as TaskContext, Poll, Wake, Waker};
@@ -330,6 +333,9 @@ pub enum TitleBar {
 /// How often open documents get an autosave checkpoint (seconds).
 pub const AUTOSAVE_SECS: f64 = 30.0 * 60.0;
 
+/// Most changed layers whose names are checked for CJK scripts one by one (beyond: all of them).
+const CJK_CHANGES: usize = 10_000;
+
 /// With auto-save on: how long after a file last changed it is saved, and how long a failed save
 /// waits before trying again (seconds).
 pub const AUTO_SAVE_SECS: f64 = 3.0;
@@ -446,6 +452,10 @@ pub struct UiState {
     pub follow_system: bool,
     pub tool_flyout: Option<&'static str>,
     pub last_error: Option<String>,
+    /// Files dropped on the home screen or the canvas, opened once their card has been on screen
+    /// ([`pending_open::pending_opens`]), and the frames it has been drawn.
+    pub pending_opens: Vec<pending_open::PendingOpen>,
+    pub pending_open_frames: u8,
     pub screenshot_requests: Vec<(u64, String)>,
     pub frame_ms: f64,
     pub render_ms: f64,
@@ -552,6 +562,8 @@ impl Default for UiState {
             follow_system: false,
             tool_flyout: None,
             last_error: None,
+            pending_opens: Vec::new(),
+            pending_open_frames: 0,
             screenshot_requests: Vec::new(),
             frame_ms: 0.0,
             render_ms: 0.0,
@@ -601,8 +613,8 @@ pub struct FigApp {
     /// System faces for scripts the built-in fonts lack were added (after the font scan), with
     /// faces for these CJK scripts ([`cjk`]) in this UI language's order.
     script_fonts: Option<(u8, &'static str)>,
-    /// The tab (uid) and revision whose names were last checked for CJK scripts.
-    cjk_checked: Option<(u64, u64)>,
+    /// The tab (uid) and document version whose names were last checked for CJK scripts.
+    cjk_checked: Option<(u64, Arc<figcraft_doc::Document>)>,
     /// The language preference the UI strings follow (applied when it changes).
     language: Option<String>,
     /// A field had the keyboard when the last frame ended.
@@ -948,10 +960,9 @@ impl FigApp {
     }
 
     pub fn open_dialog(&mut self) {
-        let exts = ["figcraft", "fig", "json", "svg", "png", "jpg", "jpeg", "webp", "gif", "tif", "tiff"];
         // Opening needs no file in front: it goes ahead even if that file closed meanwhile.
         self.start_dialog(
-            |services| services.pick_open(i18n::tr("Open"), &exts),
+            |services| services.pick_open(i18n::tr("Open"), OPEN_EXTENSIONS),
             false,
             |app, p| {
                 let ps = p.to_string_lossy().to_string();
@@ -1066,11 +1077,24 @@ impl FigApp {
             })
         });
         let dragging = ctx.input(|i| i.pointer.any_down());
-        if let Some(d) = self.session.docs.get(self.session.active).filter(|d| !dragging && self.cjk_checked != Some((d.uid, d.revision))) {
-            self.cjk_checked = Some((d.uid, d.revision));
-            let doc = &d.doc;
-            let comments = doc.comments.iter().flat_map(|c| std::iter::once(&c.first).chain(&c.replies)).flat_map(|m| [&m.author, &m.text]);
-            need |= std::iter::once(&doc.name).chain(doc.nodes().map(|n| &n.name)).chain(comments).fold(0, |m, s| m | cjk::scripts(s));
+        // Pans and zooms change the revision too: only a new version of the document is looked
+        // at, and only the layers it changed (a large file has hundreds of thousands of names).
+        let current = self.session.docs.get(self.session.active).filter(|_| !dragging).map(|d| (d.uid, d.doc.clone()));
+        if let Some((uid, doc)) = current {
+            let before = self.cjk_checked.take().filter(|(u, _)| *u == uid).map(|(_, b)| b);
+            if !before.as_ref().is_some_and(|b| Arc::ptr_eq(b, &doc)) {
+                let mut scan = |s: &str| need |= cjk::scripts(s);
+                scan(&doc.name);
+                match before.as_ref().and_then(|b| doc.changed_ids(b, CJK_CHANGES)) {
+                    Some(ids) => ids.into_iter().filter_map(|id| doc.node(id)).for_each(|n| scan(&n.name)),
+                    None => doc.nodes().for_each(|n| scan(&n.name)),
+                }
+                doc.comments.iter().flat_map(|c| std::iter::once(&c.first).chain(&c.replies)).for_each(|m| {
+                    scan(&m.author);
+                    scan(&m.text);
+                });
+            }
+            self.cjk_checked = Some((uid, doc));
         }
         need
     }
@@ -1444,7 +1468,7 @@ impl FigApp {
 
     /// UI state as JSON (control channel `ui.inspect`).
     pub fn inspect(&self) -> Value {
-        json!({
+        let mut state = json!({
             "rightTab": self.ui.right_tab,
             "leftTab": self.ui.left_tab,
             "home": self.ui.home,
@@ -1503,9 +1527,52 @@ impl FigApp {
             "panels": {"left": self.ui.left_width, "right": self.ui.right_width, "leftCollapsed": self.ui.left_collapsed},
             "status": self.session.status(),
             "lastError": self.ui.last_error,
-        })
+        });
+        state["pendingOpens"] = json!(self.ui.pending_opens.len());
+        state
     }
 }
 
+/// The file types File ▸ Open and a drop on the home screen open.
+pub(crate) const OPEN_EXTENSIONS: &[&str] = &["figcraft", "fig", "json", "svg", "png", "jpg", "jpeg", "webp", "gif", "tif", "tiff"];
+
+/// Whether `path` names a file type that opens as a document (the extension, in any case).
+pub(crate) fn opens(path: &Path) -> bool {
+    path.extension().and_then(|e| e.to_str()).is_some_and(|e| OPEN_EXTENSIONS.iter().any(|x| x.eq_ignore_ascii_case(e)))
+}
+
+/// The contents of a dropped file that has no file on disk to read by path.
+#[cfg(not(target_arch = "wasm32"))]
+pub(crate) fn dropped_bytes(f: &egui::DroppedFileHandle) -> Option<Vec<u8>> {
+    f.bytes().ok()
+}
+
+/// The contents of a dropped file that has no file on disk to read by path.
+#[cfg(target_arch = "wasm32")]
+pub(crate) fn dropped_bytes(_f: &egui::DroppedFileHandle) -> Option<Vec<u8>> {
+    // Browser drops arrive asynchronously; not supported yet.
+    None
+}
+
+/// While files are dragged over the window: a tinted, outlined `rect` with `label` in its middle,
+/// over everything else, saying what a drop does there.
+pub(crate) fn drop_overlay(ctx: &egui::Context, rect: egui::Rect, label: &str) {
+    if ctx.input(|i| i.raw.hovered_files.is_empty()) {
+        return;
+    }
+    let t = theme::Tokens::get(ctx);
+    let painter = ctx.layer_painter(egui::LayerId::new(egui::Order::Foreground, egui::Id::new("drop_overlay")));
+    let area = rect.shrink(4.0);
+    painter.rect_filled(area, egui::CornerRadius::same(8), t.accent.gamma_multiply(0.12));
+    painter.rect_stroke(area, egui::CornerRadius::same(8), egui::Stroke::new(2.0, t.accent), egui::StrokeKind::Inside);
+    let galley = painter.layout_no_wrap(label.to_owned(), theme::semibold(14.0), t.text);
+    let pill = egui::Rect::from_center_size(area.center(), galley.size() + egui::vec2(32.0, 16.0));
+    painter.rect_filled(pill, egui::CornerRadius::same(8), t.panel);
+    painter.rect_stroke(pill, egui::CornerRadius::same(8), egui::Stroke::new(1.0, t.accent), egui::StrokeKind::Inside);
+    painter.galley(pill.center() - galley.size() / 2.0, galley, t.text);
+    // Hovering sends no pointer events on every platform: keep the overlay current.
+    ctx.request_repaint();
+}
+
 #[cfg(test)]
 mod typography_scrub_tests;

crates/ui-egui/src/pending_open.rs

@@ -0,0 +1,131 @@
+//! Files dropped on the home screen or the canvas open a frame later, behind a card that says what
+//! is happening: opening a large `.fig` blocks the UI thread for a while, and the card is on screen
+//! before it does (rather than a window that freezes without a word).
+
+use figcraft_doc::NodeId;
+use serde_json::Value;
+
+use crate::FigApp;
+use crate::i18n::{tr, trf, trn};
+use crate::theme::{Tokens, semibold};
+
+/// A dropped file waiting to be opened (`file.open`, a document of its own) or imported
+/// (`file.import`, into the current document).
+pub struct PendingOpen {
+    /// What the card shows for it (the file name).
+    pub label: String,
+    pub params: Value,
+    pub command: &'static str,
+    /// Canvas imports stay with the document and page that received the drop.
+    pub target: Option<ImportTarget>,
+}
+
+pub struct ImportTarget {
+    pub uid: u64,
+    pub page: NodeId,
+    pub name: String,
+}
+
+fn run_pending(app: &mut FigApp, pending: PendingOpen) -> Option<Value> {
+    let target = match pending.target {
+        Some(target) => target,
+        None if pending.command != "file.import" => return app.run(pending.command, pending.params),
+        None => {
+            cancel(app, tr("The destination document is unavailable. Nothing was imported.").to_string());
+            return None;
+        }
+    };
+    let Some(index) = app.session.docs.iter().position(|doc| doc.uid == target.uid) else {
+        cancel(app, tr("The destination document was closed. Nothing was imported.").to_string());
+        return None;
+    };
+    if !app.session.docs[index].doc.pages.contains(&target.page) {
+        cancel(app, tr("The destination page was removed. Nothing was imported.").to_string());
+        return None;
+    }
+
+    let previous = app.session.ds().ok().map(|doc| doc.uid);
+    let previous_page = app.session.docs[index].page;
+    let previous_selection = app.session.docs[index].selection.clone();
+    app.session.active = index;
+    app.session.docs[index].page = target.page;
+    let result = app.run(pending.command, pending.params);
+    if previous_page != target.page
+        && let Some(doc) = app.session.docs.iter_mut().find(|doc| doc.uid == target.uid)
+        && doc.doc.pages.contains(&previous_page)
+    {
+        doc.page = previous_page;
+        doc.selection = previous_selection;
+        doc.clean_selection();
+    }
+    if let Some(index) = previous.and_then(|uid| app.session.docs.iter().position(|doc| doc.uid == uid)) {
+        app.session.active = index;
+    }
+    result
+}
+
+/// An import that has no destination left: nothing is imported, and the user is told why.
+fn cancel(app: &mut FigApp, message: String) {
+    app.ui.last_error = Some(message.clone());
+    app.toast(message);
+}
+
+/// Frames the card is drawn before the files open: egui lays a new card out invisibly on its first
+/// frame, so the second one is the first the window shows.
+const FRAMES_BEFORE_OPENING: u8 = 2;
+
+/// The card while files wait, then (once it has been on screen) open them. Called before the import
+/// report, so a report for these files shows after them.
+pub fn pending_opens(app: &mut FigApp, ctx: &egui::Context) {
+    if app.ui.pending_opens.is_empty() {
+        app.ui.pending_open_frames = 0;
+        return;
+    }
+    ctx.request_repaint();
+    if app.ui.pending_open_frames >= FRAMES_BEFORE_OPENING {
+        app.ui.pending_open_frames = 0;
+        for pending in std::mem::take(&mut app.ui.pending_opens) {
+            let command = pending.command;
+            if run_pending(app, pending).is_some() && command == "file.open" {
+                app.ui.home = false;
+            }
+        }
+        return;
+    }
+    app.ui.pending_open_frames += 1;
+    let title = match app.ui.pending_opens.first().map(|p| p.command) {
+        Some("file.import") => {
+            let name = app
+                .ui
+                .pending_opens
+                .first()
+                .and_then(|pending| pending.target.as_ref().map(|target| target.name.clone()))
+                .or_else(|| app.session.doc().ok().map(|d| d.name.clone()))
+                .unwrap_or_default();
+            trf("Adding to {name}", &[("name", &name)])
+        }
+        _ => trn("Opening {n} files as new files", app.ui.pending_opens.len(), &[]),
+    };
+    let t = Tokens::get(ctx);
+    let pending = &app.ui.pending_opens;
+    // Shown at once: the frame after this one may block the window while the file opens.
+    crate::dialogs::window("", ctx).id(egui::Id::new("pending_open")).title_bar(false).movable(false).interactable(false).fade_in(false).show(
+        ctx,
+        |ui| {
+            ui.set_width(480.0);
+            ui.label(egui::RichText::new(title).font(semibold(13.0)));
+            ui.add_space(12.0);
+            for p in pending {
+                ui.horizontal(|ui| {
+                    ui.add(egui::Spinner::new().size(16.0));
+                    ui.label(p.label.as_str());
+                });
+            }
+            ui.add_space(16.0);
+            ui.horizontal(|ui| {
+                ui.add(egui::Spinner::new().size(12.0));
+                ui.label(egui::RichText::new(tr("Opening the file…")).color(t.text_secondary));
+            });
+        },
+    );
+}

crates/ui-egui/src/render_worker.rs

@@ -20,7 +20,7 @@ use web_time::Instant;
 /// A preview has this many times fewer pixels each way than the view it stands in for.
 pub const PREVIEW_FACTOR: f64 = 4.0;
 /// Full renders quicker than this (about a frame) show without a preview first.
-const PREVIEW_AFTER_MS: f64 = 12.0;
+pub const PREVIEW_AFTER_MS: f64 = 12.0;
 
 #[derive(Clone)]
 pub struct Job {

crates/ui-egui/src/zoom_preview_tests.rs

@@ -13,7 +13,7 @@ use figcraft_render::{View, Work};
 use serde_json::json;
 
 use super::{CanvasState, shows};
-use crate::render_worker::{Done, Inline, Job, PREVIEW_FACTOR, Renders, coarse_view, render_now};
+use crate::render_worker::{Done, Inline, Job, PREVIEW_AFTER_MS, PREVIEW_FACTOR, Renders, coarse_view, render_now};
 
 /// A page of ellipses with a rectangle on top; the session and the rectangle.
 fn document() -> (Session, NodeId) {
@@ -27,6 +27,35 @@ fn document() -> (Session, NodeId) {
     (s, rect)
 }
 
+/// A page whose renders from scratch of each of `views` take at least `ms`: the rectangle with glass
+/// and a background blur, and more and more blurred rectangles over the views until they do (a
+/// fixed scene would turn quick on a faster machine or renderer).
+fn slow_scene(views: &[View], ms: f64) -> Session {
+    let (mut s, rect) = document();
+    s.execute("effect.add", &json!({"ids": [rect], "type": "GLASS"})).unwrap();
+    s.execute("effect.add", &json!({"ids": [rect], "type": "BACKGROUND_BLUR"})).unwrap();
+    let area = views.iter().map(View::page_rect).reduce(|a, b| a.union(b)).unwrap();
+    let mut more = 8;
+    for _ in 0..12 {
+        let ds = s.ds().unwrap();
+        let quickest = views.iter().map(|v| render_now(&job(&ds.doc, ds.page, ds.uid, v.clone())).unwrap().ms).fold(f64::INFINITY, f64::min);
+        if quickest >= ms {
+            return s;
+        }
+        let (w, h) = (area.width() / 4.0, area.height() / 4.0);
+        let ids: Vec<NodeId> = (0..more)
+            .map(|k| {
+                let (fx, fy) = (f64::from(k * 37 % 101) / 101.0, f64::from(k * 59 % 103) / 103.0);
+                let p = json!({"x": area.x0 + fx * (area.width() - w), "y": area.y0 + fy * (area.height() - h), "width": w, "height": h});
+                id_of(&s.execute("shape.rectangle", &p).unwrap()["id"]).unwrap()
+            })
+            .collect();
+        s.execute("effect.add", &json!({"ids": ids, "type": "BACKGROUND_BLUR"})).unwrap();
+        more *= 2;
+    }
+    panic!("no scene renders slower than {ms} ms");
+}
+
 /// A `w` × `h` device-pixel view at `scale` centred on page point `c`.
 fn view_at(c: (f64, f64), scale: f64, w: u32, h: u32) -> View {
     View { origin: (c.0 - f64::from(w) / scale / 2.0, c.1 - f64::from(h) / scale / 2.0), scale, width: w, height: h }
@@ -254,18 +283,18 @@ fn a_preview_replaces_a_refined_image_of_the_same_zoom_elsewhere_on_the_page() {
 
 #[test]
 fn the_browser_worker_previews_by_measured_render_time_then_refines_the_next_frame() {
-    // Big enough that a render from scratch takes well over a frame: blurs and glass on 2400².
-    let (mut s, rect) = document();
-    s.execute("effect.add", &json!({"ids": [rect], "type": "GLASS"})).unwrap();
-    s.execute("effect.add", &json!({"ids": [rect], "type": "BACKGROUND_BLUR"})).unwrap();
+    // Renders from scratch at 200% and 100% (whose times decide the previews below) well over the
+    // threshold, wherever this runs.
+    let view = |scale| view_at((300.0, 200.0), scale, 1200, 1200);
+    let s = slow_scene(&[view(2.0), view(1.0)], 3.0 * PREVIEW_AFTER_MS);
     let ds = s.ds().unwrap();
-    let at = |scale| job(&ds.doc, ds.page, ds.uid, view_at((300.0, 200.0), scale, 2400, 2400));
+    let at = |scale| job(&ds.doc, ds.page, ds.uid, view(scale));
     // The production threshold, as the browser has it.
     let mut w = Inline::new(egui::Context::default());
     w.submit(at(2.0));
     let first = w.poll().expect("the first image");
     assert!(!first.coarse && !w.in_flight(), "the first render has no measure to preview by");
-    assert!(first.ms >= 12.0, "renders are timed in the browser worker too (and this one is slow): {} ms", first.ms);
+    assert!(first.ms >= PREVIEW_AFTER_MS, "renders are timed in the browser worker too (and this one is slow): {} ms", first.ms);
     // A new zoom: the preview this frame, the refined image the next.
     w.submit(at(1.0));
     let p = w.poll().expect("a preview");

docs/control-protocol.md

@@ -18,7 +18,8 @@ reply:    {"id": 1, "ok": true, "result": ...}
 
 Requests are queued and run on the UI thread at the start of the next frame, so replies reflect the
 real UI state. A request that the UI doesn't answer within 60 s gets a timeout error. A line that is
-not JSON gets `{"id": null, "ok": false, "error": "bad JSON: …"}`. The implementation is in
+not JSON gets `{"id": null, "ok": false, "error": "bad JSON: …"}` and ends the connection (so an
+HTTP request a web page makes the browser send here never runs). The implementation is in
 `crates/ui-egui/src/control.rs` (methods) and `apps/figcraft/src/control_server.rs` (socket).
 
 A request line is limited to **32 MiB before the newline**, including whitespace. The reader stops

docs/gaps.md

@@ -1,6 +1,6 @@
 # Where FigCraft falls short of Figma
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-14 · **Change:** minor (reviewed Russian catalog and integer plurals; `.fig` export: instance sizes, variables with modes, shared styles, variable-width strokes; sharing with a join code; text box sizes measured against documents re-saved by other software; live sessions per document; .fig export checked by opening written files in other software; experimental .fig export; keyboard shortcut parity suite and bindings; Simplified Chinese draft catalog; Latin American Spanish overlay; prototyping tail: gamepad triggers, widgets in prototypes, mode lookups; plugin directory on figcraft-server; Japanese and Korean draft catalogs and CJK UI fonts; plugin widgets and the plugin panel tail; French, German and Brazilian Portuguese draft catalogs; cursor chat and spotlight in live sessions; layers and assets panels behaviour suite and fixes; vector multi-edit and edit tail; dev resources links; extended collections tail; branch version history and finer list merges; comments and version history behaviour suite and fixes; canvas navigation, guides and grids behaviour suite and fixes; `.fig` import: editable vector networks, more layer kinds, variable prototype actions; `.fig` import, best effort: gap 1 down to its tail; Windows QA pass: everyday workflows on Windows 11, eight fixes incl. unsaved work kept after a crash or a forced quit; Display P3: gamut warning and soft-proof (true P3 blocked upstream); several windows; localization layer with a draft Spanish catalog; hosting figcraft-server: wss in the desktop app, server releases, deployment guide; plugin panels and settings; canvas fixes: boolean hit testing on the result, group drags, frame outlines and slices; code connect; stretch and scatter brushes, pen pressure; text on a path and pattern fills; team libraries on the server and swap library; branches: create, update from main, review and merge; animated GIF fills and TIFF images; Open recent, outlines for the selection and mask outlines: menu breadth 100%; extended collections, variables import/export, gradient stop and variant bindings: gap 14 down to its tail) · **Target:** Figma Design (desktop app 126.10.7)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-15 · **Change:** minor (bounded canvas pan overscan; reviewed Russian catalog and integer plurals; `.fig` export: instance sizes, variables with modes, shared styles, variable-width strokes; sharing with a join code; text box sizes measured against documents re-saved by other software; live sessions per document; .fig export checked by opening written files in other software; experimental .fig export; keyboard shortcut parity suite and bindings; Simplified Chinese draft catalog; Latin American Spanish overlay; prototyping tail: gamepad triggers, widgets in prototypes, mode lookups; plugin directory on figcraft-server; Japanese and Korean draft catalogs and CJK UI fonts; plugin widgets and the plugin panel tail; French, German and Brazilian Portuguese draft catalogs; cursor chat and spotlight in live sessions; layers and assets panels behaviour suite and fixes; vector multi-edit and edit tail; dev resources links; extended collections tail; branch version history and finer list merges; comments and version history behaviour suite and fixes; canvas navigation, guides and grids behaviour suite and fixes; `.fig` import: editable vector networks, more layer kinds, variable prototype actions; `.fig` import, best effort: gap 1 down to its tail; Windows QA pass: everyday workflows on Windows 11, eight fixes incl. unsaved work kept after a crash or a forced quit; Display P3: gamut warning and soft-proof (true P3 blocked upstream); several windows; localization layer with a draft Spanish catalog; hosting figcraft-server: wss in the desktop app, server releases, deployment guide; plugin panels and settings; canvas fixes: boolean hit testing on the result, group drags, frame outlines and slices; code connect; stretch and scatter brushes, pen pressure; text on a path and pattern fills; team libraries on the server and swap library; branches: create, update from main, review and merge; animated GIF fills and TIFF images; Open recent, outlines for the selection and mask outlines: menu breadth 100%; extended collections, variables import/export, gradient stop and variant bindings: gap 14 down to its tail) · **Target:** Figma Design (desktop app 126.10.7)
 
 Every known shortfall against Figma, one entry each, ranked by how much it stops a Figma user from
 doing real work in FigCraft. Agents: pick work from the top unless the owner says otherwise. The
@@ -197,6 +197,9 @@ No alpha blockers: the alpha gate in [`roadmap.md`](roadmap.md#alpha-gate) passe
   parallel, retained) and shows the image through wgpu. A new zoom can't reuse the retained
   image; when renders from scratch take a frame or more, the whole view is previewed with a
   sixteenth of the pixels first, then refined.
+- **Landed (2026-10-15):** a bounded render margin is reused during panning and refilled before
+  the visible view reaches its edge. The extra rendered area is capped at 1.6× visible pixels;
+  this reduces blank strips without changing the CPU renderer.
 - **Evidence (measured, `cargo xtask bench`):** a 50k-layer page ~8 ms zoomed out with levels of
   detail, single-layer edits at 10k layers ~0.2 ms; full 1440×900 renders 7–15 ms at 10k layers.
   Heavy effects (glass, background blur, noise) and 4K/5K canvases at 2x are where CPU time grows.
@@ -397,6 +400,7 @@ No alpha blockers: the alpha gate in [`roadmap.md`](roadmap.md#alpha-gate) passe
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-15 | minor | Gap 7: bounded canvas overscan for smoother panning. Estimates and ranking unchanged. |
 | 2026-10-14 | minor | Russian catalog (M9), reviewed and approved by VanTan: all 2,165 current entries, Русский in Preferences and regional ru tags. Russian integer plurals use one/few/many; contributor display name VanTan added. Existing estimates unchanged. |
 | 2026-10-13 | minor | Gap 1: the experimental `.fig` export writes instance sizes (resized, filling an auto layout, scaled), variables with modes and bindings, shared styles and variable-width strokes, and the import reads them back. Checked by opening written files in other software: resized and scaled instances keep their size and lay their layers out for it, variables with their modes and colour bindings resolve there (a frame set to another mode shows that mode's colours, also inside instances), colour, text, effect and grid styles are listed, and variable-width strokes that are the same on both sides of the path draw with their width; number, string and boolean bindings and bindings on effects, layout guides and gradient stops come across as the values they give but did not show as bound there (their entries now also name the layer field they set, not yet checked there), and strokes wider on one side of the path are written as filled outlines, no longer editable strokes there (the stroke itself is kept as plugin data and our own import puts it back; not yet checked there). Hours and the ranking unchanged |
 | 2026-10-12 | minor | Gap 2: your online files landed (the app records the files it put on a server with their owner tokens, Home ▸ Online lists them and opens them again as their owner, with sharing, rename, removal and forget from the list; one request per server tells which are still there; tabs mark files in a live session). What is left is unchanged: accounts, teams and per-person permissions, shared comments and versions. Hours unchanged |

docs/localization-parity.md

@@ -21,7 +21,7 @@ supported by both apps (CJK, Arabic and Devanagari shaping, IME); Figma has no v
 
 - **Layer:** one TOML catalog per language in `crates/ui-egui/locales/`, baked into the binary by
   the UI crate's build script (desktop and web; nothing read at run time). Keys are the English text
-  (`tr("Fill")`, `trf` for `{named}` placeholders, `trn` for counts with one/other plural forms), so
+  (`tr("Fill")`, `trf` for `{named}` placeholders, `trn` for counts with one/few/many/other plural forms), so
   a missing translation shows English, never a raw key. One English text that needs two
   translations takes a context (`"Fill|sizing"`).
 - **Strings:** 1,417 UI keys in `en.toml` (36 with plural forms; ~110 are labels from engine and
@@ -55,9 +55,10 @@ supported by both apps (CJK, Arabic and Devanagari shaping, IME); Figma has no v
   until someone translates it. Every draft translates every string as of 2026-10-12 (checked by
   adding each to `COMPLETE` locally and running the check).
 - **Not yet localized:** messages the engine writes (errors, a few toasts, Dev Mode property values
-  such as "inside"), number formatting (decimal points stay `.`), and plural forms beyond one/other
-  (French and Brazilian Portuguese take the singular for 0 as well; Japanese, Korean and Chinese
-  have one form; CLDR's "many" for millions reads as the plural).
+  such as "inside"), number formatting (decimal points stay `.`), and decimal plural rules
+  (`trn` takes integers: Czech uses one/few/other and Russian one/few/many; French and Brazilian
+  Portuguese take the singular for 0 as well; Japanese, Korean and Chinese have one form;
+  CLDR's "many" for millions in French, Spanish and Portuguese reads as the plural).
 - **Script support in documents:** Unicode bidi with Arabic shaping and mirrored brackets in text
   layers; right-to-left list markers and indents; right-to-left names in the layers panel, tabs
   and canvas labels (visual order, joined Arabic); inline IME composition with the candidate window

docs/roadmap.md

@@ -1,6 +1,6 @@
 # FigCraft roadmap: milestones and what's next
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-14 · **Change:** minor (recent files as cards with thumbnails on the home screen; community fixes: lost images reported on loading, SVG import budgets, Leptos code, full screen, server snapshots, owner-only preferences, ruzstd 0.9.1, layer cycle repair, batch rollback, Direct3D 12 on Windows, plugin metering; vector edit mode regions: hover hatch, selection and drag; repeat command recursion fix; the Layout panel's constrain-proportions link scales the other side, #220; Simplified Chinese draft catalog; Latin American Spanish overlay; prototyping tail: gamepad triggers, widgets in prototypes, mode lookups; plugin directory on figcraft-server; Japanese and Korean draft catalogs and CJK UI fonts; plugin widgets and the plugin panel tail; French, German and Brazilian Portuguese draft catalogs; `.fig` import, best effort; Display P3: gamut warning and soft-proof (true P3 blocked upstream); several windows; localization layer with a draft Spanish catalog; hosting figcraft-server: wss in the desktop app, server releases, deployment guide; plugin panels and settings; canvas fixes: boolean hit testing on the result, group drags, frame outlines and slices; code connect; stretch and scatter brushes, pen pressure; text on a path and pattern fills; team libraries on the server and swap library; branches: create, update from main, review and merge; animated GIF fills and TIFF images; Open recent, outlines for the selection and mask outlines: menu breadth 100%; extended collections, variables import/export, gradient stop and variant bindings; feature breadth ~79%) · **Target:** Figma Design (desktop app 126.10.7)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-16 · **Change:** minor (community fixes from #478 up and a control-channel fix (#589); recent files as cards with thumbnails on the home screen; community fixes: lost images reported on loading, SVG import budgets, Leptos code, full screen, server snapshots, owner-only preferences, ruzstd 0.9.1, layer cycle repair, batch rollback, Direct3D 12 on Windows, plugin metering; vector edit mode regions: hover hatch, selection and drag; repeat command recursion fix; the Layout panel's constrain-proportions link scales the other side, #220; Simplified Chinese draft catalog; Latin American Spanish overlay; prototyping tail: gamepad triggers, widgets in prototypes, mode lookups; plugin directory on figcraft-server; Japanese and Korean draft catalogs and CJK UI fonts; plugin widgets and the plugin panel tail; French, German and Brazilian Portuguese draft catalogs; `.fig` import, best effort; Display P3: gamut warning and soft-proof (true P3 blocked upstream); several windows; localization layer with a draft Spanish catalog; hosting figcraft-server: wss in the desktop app, server releases, deployment guide; plugin panels and settings; canvas fixes: boolean hit testing on the result, group drags, frame outlines and slices; code connect; stretch and scatter brushes, pen pressure; text on a path and pattern fills; team libraries on the server and swap library; branches: create, update from main, review and merge; animated GIF fills and TIFF images; Open recent, outlines for the selection and mask outlines: menu breadth 100%; extended collections, variables import/export, gradient stop and variant bindings; feature breadth ~79%) · **Target:** Figma Design (desktop app 126.10.7)
 
 Forward-looking plan. Where FigCraft stands today: [`ROADMAP.md`](../ROADMAP.md) and
 [`target-app-parity.md`](target-app-parity.md); the full ranked list: [`gaps.md`](gaps.md). Hours
@@ -73,6 +73,7 @@ blockers.
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-16 | minor | Community fixes from #478 up (batches #591, #598, #602; 69 PRs) and a control-channel fix: a line that isn't JSON now ends a `--control` connection, so a web page can't drive the app through a browser request (#589). Highlights: page copies keep navigation, flows, prototype settings and guides; Find and Replace keeps line endings and case-insensitive matches; text hyperlinks survive import and export; recent colours record only what was picked; MCP screenshots respect `maxSize`; Swedish catalog (UI strings), Czech plurals; bounded canvas overscan while panning; Korean fallback at the run's weight; many vector-edit, guide, page and .fig round-trip fixes. Numbers unchanged |
 | 2026-10-14 | minor | M7: the Small caps button in Type settings showed a box where the UI font has no small-capital `ɢ` (builds without Inter use egui's fonts); its sample is now a capital and a smaller capital, drawn from ordinary letters every UI font has. Numbers unchanged |
 | 2026-10-14 | minor | M7: Home screen recent files as cards: each card shows the picture its file carries on its first page's colour, the file's icon, name and "Edited ... ago"; sort by name, creation or last change either way; a table view; a click selects, a double-click or Enter opens, arrow keys move; Open, Show in folder and Remove from recents on right-click. Numbers unchanged. |
 | 2026-10-14 | minor | Lost images reported on loading (#207): a `.figcraft` file whose image member is damaged, too large or missing no longer loads in silence; each lost image (up to 20, then a count) is listed in `repairs` on `file.open` with its hash and the reason, and the app shows it as a toast. Saving still writes the file without the lost images. Numbers unchanged |

docs/translating.md

@@ -80,9 +80,9 @@ language also needs its script in `cjk::language`.
    `few` for 2–4, 22–24… except 12–14; and `many` for the other integers, including 0. Keep `{n}`
    in all Russian forms. Add new rules to `plural` in
    [`crates/ui-egui/src/i18n.rs`](../crates/ui-egui/src/i18n.rs). A missing form reads `other`;
-   a missing key uses the fallback catalog's own plural rule. Czech has no rule of its own yet, so it
-   picks `one` for 1 and `other` for everything else: its `other` forms are count-neutral for 0,
-   2–4 and 5+ (e.g. `Vrstvy: {n}`).
+   a missing key uses the fallback catalog's own plural rule. Czech uses `one` for 1, `few` for
+   2–4 and `other` for 0 and 5+ (e.g. `{n} vrstva`, `{n} vrstvy`, `{n} vrstev`). Keep `{n}` in all
+   three forms. Czech's CLDR `many` applies only to decimals; `trn` takes integer counts.
 4. To require full coverage, add the code to `COMPLETE` in
    [`crates/ui-egui/src/i18n_tests.rs`](../crates/ui-egui/src/i18n_tests.rs). Every later PR that
    adds a string then has to translate it into each complete language, so only Spanish is there: