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>

nix/modules/partitions.nix

@@ -0,0 +1,25 @@
+{ inputs, ... }:
+{
+  imports = [
+    inputs.flake-parts.flakeModules.partitions
+  ];
+
+  partitionedAttrs = {
+    devShells = "dev";
+    formatter = "dev";
+    checks = "dev";
+  };
+
+  partitions.dev = {
+    extraInputsFlake = ../dev;
+    module =
+      { inputs, ... }:
+      {
+        imports = [
+          inputs.treefmt-nix.flakeModule
+          ./devshells.nix
+          ./treefmt.nix
+        ];
+      };
+  };
+}