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/collab/tests/integration/db_tests/migrations.rs

@@ -0,0 +1,47 @@
+use std::path::Path;
+use std::time::Duration;
+
+use anyhow::{Result, anyhow};
+use collections::HashMap;
+use sea_orm::ConnectOptions;
+use sqlx::Connection;
+use sqlx::migrate::{Migrate, Migration, MigrationSource};
+
+/// Runs the database migrations for the specified database.
+pub async fn run_database_migrations(
+    database_options: &ConnectOptions,
+    migrations_path: impl AsRef<Path>,
+) -> Result<Vec<(Migration, Duration)>> {
+    let migrations = MigrationSource::resolve(migrations_path.as_ref())
+        .await
+        .map_err(|err| anyhow!("failed to load migrations: {err:?}"))?;
+
+    let mut connection = sqlx::AnyConnection::connect(database_options.get_url()).await?;
+
+    connection.ensure_migrations_table().await?;
+    let applied_migrations: HashMap<_, _> = connection
+        .list_applied_migrations()
+        .await?
+        .into_iter()
+        .map(|migration| (migration.version, migration))
+        .collect();
+
+    let mut new_migrations = Vec::new();
+    for migration in migrations {
+        match applied_migrations.get(&migration.version) {
+            Some(applied_migration) => {
+                anyhow::ensure!(
+                    migration.checksum == applied_migration.checksum,
+                    "checksum mismatch for applied migration {}",
+                    migration.description
+                );
+            }
+            None => {
+                let elapsed = connection.apply(&migration).await?;
+                new_migrations.push((migration, elapsed));
+            }
+        }
+    }
+
+    Ok(new_migrations)
+}