logiguard fork: GPUI xdg-activation keyboard-focus serial fix

Single-commit orphan branch: full zed-industries/zed @ 8c74db0 source tree
with a 3-file patch applied (no upstream history).

Patch (crates/gpui_linux/src/linux/wayland/):
  - serial.rs: add SerialKind::KeyboardEnter
  - client.rs: store wl_keyboard.enter serial; add latest_serial_of()
  - window.rs: activate() uses keyboard-enter serial (Mutter focus gate)

Mutter honors window activation only when the token carries the keyboard-
focus serial from wl_keyboard.enter; GPUI used a stale mouse-press serial.
See docs/tray-window-focus-wayland.md in logiguard.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

crates/project/tests/integration/agent_registry_store.rs

@@ -0,0 +1,115 @@
+use std::{future, sync::Arc, time::Duration};
+
+use fs::FakeFs;
+use gpui::TestAppContext;
+use http_client::{AsyncBody, FakeHttpClient, HttpClient, Response};
+use project::AgentRegistryStore;
+use serde_json::json;
+
+use crate::init_test;
+
+#[gpui::test]
+async fn registry_refresh_times_out_when_fetch_never_completes(cx: &mut TestAppContext) {
+    init_test(cx);
+
+    let fs = FakeFs::new(cx.executor());
+    let http_client =
+        FakeHttpClient::create(|_| future::pending::<anyhow::Result<Response<AsyncBody>>>())
+            as Arc<dyn HttpClient>;
+
+    let registry_store =
+        cx.update(|cx| AgentRegistryStore::init_global(cx, fs.clone(), http_client));
+    cx.run_until_parked();
+
+    cx.executor().advance_clock(Duration::from_secs(31));
+    cx.run_until_parked();
+
+    registry_store.update(cx, |store, _| {
+        assert!(!store.is_fetching());
+        assert!(
+            store
+                .fetch_error()
+                .is_some_and(|error| error.contains("timed out after 30s")),
+            "expected registry fetch timeout error, got {:?}",
+            store.fetch_error()
+        );
+    });
+}
+
+#[gpui::test]
+async fn registry_refresh_does_not_block_sequentially_on_hung_icon_downloads(
+    cx: &mut TestAppContext,
+) {
+    init_test(cx);
+
+    let fs = FakeFs::new(cx.executor());
+    let http_client = FakeHttpClient::create(|request| async move {
+        if request.uri().to_string().contains("registry.json") {
+            Ok(Response::builder()
+                .status(200)
+                .body(AsyncBody::from(
+                    serde_json::to_string(&json!({
+                        "version": "1",
+                        "agents": [
+                            {
+                                "id": "slow-icon-a",
+                                "name": "Slow Icon A",
+                                "version": "1.0.0",
+                                "description": "An agent with a slow icon.",
+                                "icon": "https://example.test/slow-icon-a.svg",
+                                "distribution": {
+                                    "npx": {
+                                        "package": "slow-icon-a"
+                                    }
+                                }
+                            },
+                            {
+                                "id": "slow-icon-b",
+                                "name": "Slow Icon B",
+                                "version": "1.0.0",
+                                "description": "Another agent with a slow icon.",
+                                "icon": "https://example.test/slow-icon-b.svg",
+                                "distribution": {
+                                    "npx": {
+                                        "package": "slow-icon-b"
+                                    }
+                                }
+                            },
+                            {
+                                "id": "slow-icon-c",
+                                "name": "Slow Icon C",
+                                "version": "1.0.0",
+                                "description": "A third agent with a slow icon.",
+                                "icon": "https://example.test/slow-icon-c.svg",
+                                "distribution": {
+                                    "npx": {
+                                        "package": "slow-icon-c"
+                                    }
+                                }
+                            }
+                        ]
+                    }))
+                    .unwrap(),
+                ))
+                .unwrap())
+        } else {
+            future::pending::<anyhow::Result<Response<AsyncBody>>>().await
+        }
+    }) as Arc<dyn HttpClient>;
+
+    let registry_store =
+        cx.update(|cx| AgentRegistryStore::init_global(cx, fs.clone(), http_client));
+    cx.run_until_parked();
+
+    cx.executor().advance_clock(Duration::from_secs(11));
+    cx.run_until_parked();
+
+    registry_store.update(cx, |store, _| {
+        assert!(!store.is_fetching());
+        assert_eq!(store.agents().len(), 3);
+        assert_eq!(store.agents()[0].id().as_ref(), "slow-icon-a");
+        assert_eq!(store.agents()[1].id().as_ref(), "slow-icon-b");
+        assert_eq!(store.agents()[2].id().as_ref(), "slow-icon-c");
+        assert_eq!(store.fetch_error(), None);
+    });
+}