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>

.config/nextest.toml

@@ -0,0 +1,48 @@
+[profile.default]
+slow-timeout = { period = "60s", terminate-after = 1 }
+
+[test-groups]
+sequential-db-tests = { max-threads = 1 }
+
+[[profile.default.overrides]]
+filter = 'package(db)'
+test-group = 'sequential-db-tests'
+
+# Run slowest tests first.
+#
+[[profile.default.overrides]]
+filter = 'package(worktree) and test(test_random_worktree_changes)'
+priority = 100
+
+[[profile.default.overrides]]
+filter = 'package(collab) and (test(random_project_collaboration_tests) or test(random_channel_buffer_tests) or test(test_contact_requests) or test(test_basic_following))'
+priority = 99
+
+[[profile.default.overrides]]
+filter = 'package(extension_host) and test(test_extension_store_with_test_extension)'
+priority = 99
+
+# Extended timeouts for tests that were timing out at 60s
+[[profile.default.overrides]]
+filter = 'test(test_rainbow_bracket_highlights) or test(test_wrapped_invisibles_drawing) or test(test_basic_following) or test(test_random_diagnostics_blocks)'
+slow-timeout = { period = "300s", terminate-after = 1 }
+
+[[profile.default.overrides]]
+filter = 'package(extension_host) and test(test_extension_store_with_test_extension)'
+slow-timeout = { period = "300s", terminate-after = 1 }
+
+[[profile.default.overrides]]
+filter = 'package(language_model) and test(test_from_image_downscales_to_default_5mb_limit)'
+slow-timeout = { period = "300s", terminate-after = 1 }
+
+[[profile.default.overrides]]
+filter = 'package(vim) and (test(test_command_read) or test(test_capital_f_and_capital_t) or test(test_f_and_t) or test(test_change_paragraph_object) or test(test_change_surrounding_character_objects) or test(test_change_word_object) or test(test_delete_paragraph_object) or test(test_delete_surrounding_character_objects) or test(test_delete_word_object))'
+slow-timeout = { period = "300s", terminate-after = 1 }
+
+[[profile.default.overrides]]
+filter =  'package(editor) and test(test_random_split_editor)'
+slow-timeout = { period = "300s", terminate-after = 1 }
+
+[[profile.default.overrides]]
+filter =  'package(editor) and test(test_random_blocks)'
+slow-timeout = { period = "300s", terminate-after = 1 }