logiguard fork v3: full patch set on verified 8c74db0 tree

Includes prior-session patches (carry forward so the app compiles):
  - crates/gpui/build.rs: cross-compile manifest fix
  - crates/gpui/src/platform.rs: PlatformWindow::activate_with_token trait method
  - crates/gpui/src/window.rs: Window::activate_with_token public API
  - crates/gpui_linux/src/linux/wayland/window.rs: WaylandWindow::activate_with_token + activate() keyboard-serial fix

Plus the focus-serial fix:
  - serial.rs: SerialKind::KeyboardEnter
  - client.rs: store wl_keyboard.enter serial; latest_serial_of()

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

crates/diagnostics/Cargo.toml

@@ -0,0 +1,55 @@
+[package]
+name = "diagnostics"
+version = "0.1.0"
+edition.workspace = true
+publish.workspace = true
+license = "GPL-3.0-or-later"
+
+[lints]
+workspace = true
+
+[lib]
+path = "src/diagnostics.rs"
+doctest = false
+
+[dependencies]
+agent_settings.workspace = true
+anyhow.workspace = true
+collections.workspace = true
+component.workspace = true
+ctor.workspace = true
+editor.workspace = true
+futures-lite.workspace = true
+gpui.workspace = true
+indoc.workspace = true
+itertools.workspace = true
+language.workspace = true
+log.workspace = true
+lsp.workspace = true
+markdown.workspace = true
+project.workspace = true
+rand.workspace = true
+serde.workspace = true
+serde_json.workspace = true
+settings.workspace = true
+text.workspace = true
+theme.workspace = true
+theme_settings.workspace = true
+ui.workspace = true
+util.workspace = true
+workspace.workspace = true
+zed_actions.workspace = true
+
+[dev-dependencies]
+
+editor = { workspace = true, features = ["test-support"] }
+gpui = { workspace = true, features = ["test-support"] }
+language = { workspace = true, features = ["test-support"] }
+lsp = { workspace = true, features = ["test-support"] }
+markdown = { workspace = true, features = ["test-support"] }
+pretty_assertions.workspace = true
+serde_json.workspace = true
+theme = { workspace = true, features = ["test-support"] }
+unindent.workspace = true
+workspace = { workspace = true, features = ["test-support"] }
+zlog.workspace = true