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_panel/benches/sorting.rs

@@ -0,0 +1,77 @@
+use criterion::{Criterion, criterion_group, criterion_main};
+use project::{Entry, EntryKind, GitEntry, ProjectEntryId};
+use project_panel::par_sort_worktree_entries;
+use settings::{ProjectPanelSortMode, ProjectPanelSortOrder};
+use std::sync::Arc;
+use util::rel_path::RelPath;
+
+fn load_linux_repo_snapshot() -> Vec<GitEntry> {
+    let file = std::fs::read_to_string(concat!(
+        env!("CARGO_MANIFEST_DIR"),
+        "/benches/linux_repo_snapshot.txt"
+    ))
+    .expect("Failed to read file");
+    file.lines()
+        .filter_map(|line| {
+            let kind = match line.chars().next() {
+                Some('f') => EntryKind::File,
+                Some('d') => EntryKind::Dir,
+                _ => return None,
+            };
+
+            let entry = Entry {
+                kind,
+                path: Arc::from(RelPath::unix(&(line.trim_end()[2..])).unwrap()),
+                id: ProjectEntryId::default(),
+                size: 0,
+                inode: 0,
+                mtime: None,
+                canonical_path: None,
+                is_ignored: false,
+                is_always_included: false,
+                is_external: false,
+                is_private: false,
+                is_hidden: false,
+                char_bag: Default::default(),
+                is_fifo: false,
+            };
+            Some(GitEntry {
+                entry,
+                git_summary: Default::default(),
+            })
+        })
+        .collect()
+}
+fn criterion_benchmark(c: &mut Criterion) {
+    let snapshot = load_linux_repo_snapshot();
+
+    let modes = [
+        ("DirectoriesFirst", ProjectPanelSortMode::DirectoriesFirst),
+        ("Mixed", ProjectPanelSortMode::Mixed),
+        ("FilesFirst", ProjectPanelSortMode::FilesFirst),
+    ];
+    let orders = [
+        ("Default", ProjectPanelSortOrder::Default),
+        ("Upper", ProjectPanelSortOrder::Upper),
+        ("Lower", ProjectPanelSortOrder::Lower),
+        ("Unicode", ProjectPanelSortOrder::Unicode),
+    ];
+
+    for (mode_name, mode) in &modes {
+        for (order_name, order) in &orders {
+            c.bench_function(
+                &format!("Sort linux worktree snapshot ({mode_name}, {order_name})"),
+                |b| {
+                    b.iter_batched(
+                        || snapshot.clone(),
+                        |mut snapshot| par_sort_worktree_entries(&mut snapshot, *mode, *order),
+                        criterion::BatchSize::LargeInput,
+                    );
+                },
+            );
+        }
+    }
+}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);