Fix streaming selection, runway expansion, and macOS redraw recovery

.github/workflows/ui-tests.yml

@@ -44,3 +44,29 @@ jobs:
       - uses: Swatinem/rust-cache@v2
       - name: UI and headless layout regressions
         run: cargo test --release --locked -p zeron-ui --lib -- --test-threads=1
+
+  macos-frame-recovery:
+    runs-on: macos-latest
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v4
+      - name: Rust toolchain
+        run: rustup show active-toolchain || rustup toolchain install
+      - name: Check out pinned GPUI for native frame-source tests
+        shell: bash
+        run: |
+          rev=$(python3 -c 'import tomllib; print(tomllib.load(open("Cargo.toml", "rb"))["workspace"]["dependencies"]["gpui"]["rev"])')
+          git init frame-source-tests
+          git -C frame-source-tests remote add origin https://github.com/zeronsh/zui
+          git -C frame-source-tests fetch --depth=1 origin "$rev"
+          git -C frame-source-tests checkout --detach FETCH_HEAD
+      - uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: |
+            .
+            frame-source-tests
+      - name: Check macOS application
+        run: cargo check --release --locked -p zeron
+      - name: Native frame-source recovery regression
+        working-directory: frame-source-tests
+        run: cargo test --release --locked -p gpui_macos --test frame_source_recovery

Cargo.toml

@@ -61,14 +61,14 @@ loro-protocol = "0.3"
 # stopped vending CABackdropLayer for Selection — window blur went dead);
 # b68970e rasterizes BackdropBlur in the wgpu renderer (frosted floats on
 # Linux — the Metal path's snapshot/blur/composite, ported).
-gpui = { git = "https://github.com/zeronsh/zui", rev = "8a32c0e26a17b9fab3aa9c2dbb79ed2d28ab2dfe" }
-gpui_platform = { git = "https://github.com/zeronsh/zui", rev = "8a32c0e26a17b9fab3aa9c2dbb79ed2d28ab2dfe", features = [
+gpui = { git = "https://github.com/zeronsh/zui", rev = "a1efdb9b7a4fb97824330af4bf49170a3deef986" }
+gpui_platform = { git = "https://github.com/zeronsh/zui", rev = "a1efdb9b7a4fb97824330af4bf49170a3deef986", features = [
     "wayland",
     "x11",
     "font-kit",
     "runtime_shaders",
 ] }
-gpui_tokio = { git = "https://github.com/zeronsh/zui", rev = "8a32c0e26a17b9fab3aa9c2dbb79ed2d28ab2dfe" }
+gpui_tokio = { git = "https://github.com/zeronsh/zui", rev = "a1efdb9b7a4fb97824330af4bf49170a3deef986" }
 
 # diffs
 similar = "2"

crates/ui/src/markdown/render.rs

@@ -903,6 +903,18 @@ thread_local! {
     static REGISTRY: RefCell<Vec<RegEntry>> = const { RefCell::new(Vec::new()) };
 }
 
+#[cfg(test)]
+pub(crate) fn selection_test_bounds(key: &str) -> gpui::Bounds<gpui::Pixels> {
+    REGISTRY.with(|r| {
+        r.borrow()
+            .iter()
+            .find(|entry| entry.key.as_ref() == key)
+            .expect("text must be registered")
+            .layout
+            .bounds()
+    })
+}
+
 /// A zero-size canvas that clears the selection registry — paint it FIRST in
 /// the transcript root (before any markdown), so each frame's registry holds
 /// exactly that frame's visible text elements in paint order.