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>

crates/collab/seed.default.json

@@ -0,0 +1,33 @@
+{
+  "admins": [
+    "nathansobo",
+    "maxbrunsfeld",
+    "as-cii",
+    "JosephTLyons",
+    "maxdeviant",
+    "SomeoneToIgnore",
+    "mikayla-maki",
+    "agu-z",
+    "osiewicz",
+    "ConradIrwin",
+    "benbrandt",
+    "bennetbo",
+    "smitbarmase",
+    "notpeter",
+    "rgbkrk",
+    "JunkuiZhang",
+    "Anthony-Eid",
+    "rtfeldman",
+    "danilo-leal",
+    "MrSubidubi",
+    "cole-miller",
+    "osyvokon",
+    "probably-neb",
+    "mgsloan",
+    "P1n3appl3",
+    "mslzed",
+    "franciskafyi",
+    "katie-z-geer"
+  ],
+  "channels": ["zed"]
+}