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>

crates/language_onboarding/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "language_onboarding"
+version = "0.1.0"
+edition.workspace = true
+publish.workspace = true
+license = "GPL-3.0-or-later"
+
+[lints]
+workspace = true
+
+[lib]
+path = "src/python.rs"
+
+[features]
+default = []
+
+[dependencies]
+db.workspace = true
+editor.workspace = true
+gpui.workspace = true
+project.workspace = true
+ui.workspace = true
+workspace.workspace = true

crates/language_onboarding/LICENSE-GPL

@@ -0,0 +1 @@
+../../LICENSE-GPL

crates/language_onboarding/src/python.rs

@@ -0,0 +1,100 @@
+use db::kvp::Dismissable;
+use editor::Editor;
+use gpui::{Context, EventEmitter, Subscription};
+use ui::{Banner, FluentBuilder as _, prelude::*};
+use workspace::{ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView, Workspace};
+
+pub struct BasedPyrightBanner {
+    dismissed: bool,
+    have_basedpyright: bool,
+    _subscriptions: [Subscription; 1],
+}
+
+impl Dismissable for BasedPyrightBanner {
+    const KEY: &str = "basedpyright-banner";
+}
+
+impl BasedPyrightBanner {
+    pub fn new(workspace: &Workspace, cx: &mut Context<Self>) -> Self {
+        let subscription = cx.subscribe(workspace.project(), |this, _, event, _| {
+            if let project::Event::LanguageServerAdded(_, name, _) = event
+                && name == "basedpyright"
+            {
+                this.have_basedpyright = true;
+            }
+        });
+        let dismissed = Self::dismissed(cx);
+        Self {
+            dismissed,
+            have_basedpyright: false,
+            _subscriptions: [subscription],
+        }
+    }
+
+    fn onboarding_banner_enabled(&self) -> bool {
+        !self.dismissed && self.have_basedpyright
+    }
+}
+
+impl EventEmitter<ToolbarItemEvent> for BasedPyrightBanner {}
+
+impl Render for BasedPyrightBanner {
+    fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
+        div()
+            .id("basedpyright-banner")
+            .when(self.onboarding_banner_enabled(), |el| {
+                el.child(
+                    Banner::new()
+                        .child(
+                            v_flex()
+                                .gap_0p5()
+                                .child(Label::new("Basedpyright is now the only default language server for Python").mt_0p5())
+                                .child(Label::new("We have disabled PyRight and pylsp by default. They can be re-enabled in your settings.").size(LabelSize::Small).color(Color::Muted))
+                        )
+                        .action_slot(
+                            h_flex()
+                                .gap_0p5()
+                                .child(
+                                    Button::new("learn-more", "Learn More")
+                                        .label_size(LabelSize::Small)
+                                        .end_icon(Icon::new(IconName::ArrowUpRight).size(IconSize::XSmall).color(Color::Muted))
+                                        .on_click(|_, _, cx| {
+                                            cx.open_url("https://zed.dev/docs/languages/python")
+                                        }),
+                                )
+                                .child(IconButton::new("dismiss", IconName::Close).icon_size(IconSize::Small).on_click(
+                                    cx.listener(|this, _, _, cx| {
+                                        this.dismissed = true;
+                                        Self::set_dismissed(true, cx);
+                                        cx.notify();
+                                    }),
+                                ))
+                        )
+                        .into_any_element(),
+                )
+            })
+    }
+}
+
+impl ToolbarItemView for BasedPyrightBanner {
+    fn set_active_pane_item(
+        &mut self,
+        active_pane_item: Option<&dyn workspace::ItemHandle>,
+        _window: &mut ui::Window,
+        cx: &mut Context<Self>,
+    ) -> ToolbarItemLocation {
+        if !self.onboarding_banner_enabled() {
+            return ToolbarItemLocation::Hidden;
+        }
+        if let Some(item) = active_pane_item
+            && let Some(editor) = item.act_as::<Editor>(cx)
+            && let Some(path) = editor.update(cx, |editor, cx| editor.target_file_abs_path(cx))
+            && let Some(file_name) = path.file_name()
+            && file_name.as_encoded_bytes().ends_with(".py".as_bytes())
+        {
+            return ToolbarItemLocation::Secondary;
+        }
+
+        ToolbarItemLocation::Hidden
+    }
+}