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>

script/clear-target-dir-if-larger-than.ps1

@@ -0,0 +1,32 @@
+param (
+    [Parameter(Mandatory = $true)]
+    [int]$MAX_SIZE_IN_GB,
+    [Parameter(Mandatory = $false)]
+    [int]$SMALL_CLEAN_SIZE_IN_GB = -1
+)
+
+$ErrorActionPreference = "Stop"
+$PSNativeCommandUseErrorActionPreference = $true
+$ProgressPreference = "SilentlyContinue"
+
+if (-Not (Test-Path -Path "target")) {
+    Write-Host "target directory does not exist yet"
+    exit 0
+}
+
+if ($SMALL_CLEAN_SIZE_IN_GB -ge 0 -and $SMALL_CLEAN_SIZE_IN_GB -ge $MAX_SIZE_IN_GB) {
+    Write-Host "error: small clean threshold (${SMALL_CLEAN_SIZE_IN_GB}GB) must be smaller than max size (${MAX_SIZE_IN_GB}GB)"
+    exit 1
+}
+
+$current_size_gb = (Get-ChildItem -Recurse -Force -File -Path "target" | Measure-Object -Property Length -Sum).Sum / 1GB
+
+Write-Host "target directory size: ${current_size_gb}GB. max size: ${MAX_SIZE_IN_GB}GB"
+
+if ($current_size_gb -gt $MAX_SIZE_IN_GB) {
+    Write-Host "clearing target directory"
+    Remove-Item -Recurse -Force -Path "target\*" -ErrorAction SilentlyContinue
+} elseif ($SMALL_CLEAN_SIZE_IN_GB -ge 0 -and $current_size_gb -gt $SMALL_CLEAN_SIZE_IN_GB) {
+    Write-Host "running cargo clean --workspace (size above small clean threshold of ${SMALL_CLEAN_SIZE_IN_GB}GB)"
+    cargo clean --workspace
+}