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/audio/src/audio_settings.rs

@@ -0,0 +1,72 @@
+use std::{
+    str::FromStr,
+    sync::atomic::{AtomicBool, Ordering},
+};
+
+use cpal::DeviceId;
+use gpui::App;
+use settings::{RegisterSetting, Settings, SettingsStore};
+
+#[derive(Clone, Debug, RegisterSetting)]
+pub struct AudioSettings {
+    /// Automatically increase or decrease you microphone's volume. This affects how
+    /// loud you sound to others.
+    ///
+    /// Recommended: off (default)
+    /// Microphones are too quite in zed, until everyone is on experimental
+    /// audio and has auto speaker volume on this will make you very loud
+    /// compared to other speakers.
+    pub auto_microphone_volume: bool,
+    /// Select specific output audio device.
+    pub output_audio_device: Option<DeviceId>,
+    /// Select specific input audio device.
+    pub input_audio_device: Option<DeviceId>,
+}
+
+/// Configuration of audio in Zed
+impl Settings for AudioSettings {
+    fn from_settings(content: &settings::SettingsContent) -> Self {
+        let audio = &content.audio.as_ref().unwrap();
+        AudioSettings {
+            auto_microphone_volume: audio.auto_microphone_volume.unwrap(),
+            output_audio_device: audio
+                .output_audio_device
+                .as_ref()
+                .and_then(|x| x.0.as_ref().and_then(|id| DeviceId::from_str(&id).ok())),
+            input_audio_device: audio
+                .input_audio_device
+                .as_ref()
+                .and_then(|x| x.0.as_ref().and_then(|id| DeviceId::from_str(&id).ok())),
+        }
+    }
+}
+
+/// See docs on [LIVE_SETTINGS]
+pub struct LiveSettings {
+    pub auto_microphone_volume: AtomicBool,
+}
+
+impl LiveSettings {
+    pub(crate) fn initialize(&self, cx: &mut App) {
+        cx.observe_global::<SettingsStore>(move |cx| {
+            LIVE_SETTINGS.auto_microphone_volume.store(
+                AudioSettings::get_global(cx).auto_microphone_volume,
+                Ordering::Relaxed,
+            );
+        })
+        .detach();
+
+        let init_settings = AudioSettings::get_global(cx);
+        LIVE_SETTINGS
+            .auto_microphone_volume
+            .store(init_settings.auto_microphone_volume, Ordering::Relaxed);
+    }
+}
+
+/// Allows access to settings from the audio thread. Updated by
+/// observer of SettingsStore. Needed because audio playback and recording are
+/// real time and must each run in a dedicated OS thread, therefore we can not
+/// use the background executor.
+pub static LIVE_SETTINGS: LiveSettings = LiveSettings {
+    auto_microphone_volume: AtomicBool::new(true),
+};