TEMP: verify the engine and catalog tests on Windows and macOS (drop before merge)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.github/workflows/tmp-verify-fixci.yml

@@ -0,0 +1,23 @@
+# TEMPORARY (dropped before merge): run the engine and catalog tests on Windows and macOS.
+name: tmp verify fix-ci
+on:
+  pull_request:
+    branches: [main]
+permissions:
+  contents: read
+jobs:
+  test:
+    if: github.head_ref == 'claude/fix-main-ci-freebsd'
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 90
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: dtolnay/rust-toolchain@686976e191b89faba57d3206551f0f330d8cb249 # stable
+      - uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
+      - run: cargo test --locked -p lightcraft-engine -p lightcraft-catalog --lib --no-fail-fast
+        env:
+          CARGO_PROFILE_DEV_DEBUG: "0"

crates/ui-egui/src/headless.rs

@@ -3833,17 +3833,28 @@ mod tests {
         for _ in 0..4 {
             h.step();
         }
-        // Performance: the thumbnail cache size goes to the library preferences
+        // Performance: the thumbnail cache size goes to the library preferences. The GPU status
+        // line at the top of this tab reads process-wide GPU state that tests running alongside
+        // change (app.gpu off, a device failure); when its text rewraps between the frame that
+        // placed a button and the click, everything below shifts and the click misses. These
+        // choices are idempotent, so click again until the setting takes.
+        fn click_until(h: &mut Headless, id: &str, done: impl Fn(&Headless) -> bool) {
+            for _ in 0..5 {
+                let r = h.request("ui.clickWidget", json!({"id": id}), Duration::from_secs(10));
+                assert_eq!(r["ok"], true, "{id}: {r}");
+                if done(h) {
+                    return;
+                }
+            }
+            panic!("clicking {id} never took effect");
+        }
         h.request("ui.clickWidget", json!({"id": "button:settingsTab-performance"}), t);
-        h.request("ui.clickWidget", json!({"id": "button:settingsCache-0"}), t);
-        assert_eq!(h.app.session.cache_mb, 512);
-        h.request("ui.clickWidget", json!({"id": "button:settingsPreview-3"}), t);
-        assert_eq!(h.app.ui.settings.preview_limit, 3840);
-        h.request("ui.clickWidget", json!({"id": "button:settingsMemory-2"}), t);
-        assert_eq!(h.app.ui.settings.memory_mb, 1024);
+        click_until(&mut h, "button:settingsCache-0", |h| h.app.session.cache_mb == 512);
+        click_until(&mut h, "button:settingsPreview-3", |h| h.app.ui.settings.preview_limit == 3840);
+        click_until(&mut h, "button:settingsMemory-2", |h| h.app.ui.settings.memory_mb == 1024);
         h.step();
         assert_eq!(lightcraft_engine::memory::budget(), 1024 << 20, "applied through app.memoryBudget");
-        h.request("ui.clickWidget", json!({"id": "button:settingsMemory-0"}), t);
+        click_until(&mut h, "button:settingsMemory-0", |h| h.app.ui.settings.memory_mb == 0);
         h.step();
         assert_eq!(lightcraft_engine::memory::budget(), lightcraft_engine::memory::default_budget(), "back to automatic");
         // Import: per-camera defaults