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/grammars/src/json/config.toml

@@ -0,0 +1,18 @@
+name = "JSON"
+grammar = "json"
+path_suffixes = ["json", "flake.lock", "geojson", "topojson", "prettierrc", "json.dist"]
+line_comments = ["// "]
+autoclose_before = ",]}"
+brackets = [
+    { start = "{", end = "}", close = true, surround = true, newline = true },
+    { start = "[", end = "]", close = true, surround = true, newline = true },
+    { start = "(", end = ")", close = true, surround = true, newline = false },
+    { start = "\"", end = "\"", close = true, surround = true, newline = false, not_in = ["string"] },
+]
+tab_size = 2
+prettier_parser_name = "json"
+debuggers = ["JavaScript"]
+word_characters = ["#"]
+
+[overrides.string]
+completion_query_characters = [":", " ", "."]