logiguard fork v2: patched GPUI on verified 8c74db0 tree

Rebuilt from the exact zed-industries/zed @ 8c74db00c4053d6c0a9037863d7bd048658da4ca
tree (previous orphan was based on a stale/wrong fetch). Same 3-file patch:
  - 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)

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

.github/actions/run_tests/action.yml

@@ -0,0 +1,21 @@
+name: "Run tests"
+description: "Runs the tests"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Install nextest
+      uses: taiki-e/install-action@921e2c9f7148d7ba14cd819f417db338f63e733c # nextest
+
+    - name: Install Node
+      uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
+      with:
+        node-version: "18"
+
+    - name: Limit target directory size
+      shell: bash -euxo pipefail {0}
+      run: script/clear-target-dir-if-larger-than 350 200
+
+    - name: Run tests
+      shell: bash -euxo pipefail {0}
+      run: cargo nextest run --workspace --no-fail-fast --failure-output immediate-final