feat: sound notifications for agent state changes

play a chime when an agent finishes work and an alert when one needs
input. only triggers for background workspaces. configurable via
sound = true/false under [ui] in config.

3 files changed, 21 insertions, 1 deletions

diff --git a/src/app/actions.rs b/src/app/actions.rs
index 8e2e9297..c73ba646 100644
--- a/src/app/actions.rs
+++ b/src/app/actions.rs
@@ -157,12 +157,29 @@ impl AppState {
                 for (ws_idx, ws) in self.workspaces.iter_mut().enumerate() {
                     if let Some(pane) = ws.panes.get_mut(&pane_id) {
                         let is_active_ws = self.active == Some(ws_idx);
+                        let prev_state = pane.state;
+
+                        // Mark unseen when transitioning to Idle in background
                         if state == AgentState::Idle
-                            && pane.state != AgentState::Idle
+                            && prev_state != AgentState::Idle
                             && !is_active_ws
                         {
                             pane.seen = false;
                         }
+
+                        // Sound notifications for background state changes
+                        if self.sound && !is_active_ws && state != prev_state {
+                            match state {
+                                AgentState::Idle if prev_state != AgentState::Idle => {
+                                    crate::sound::play(crate::sound::Sound::Done);
+                                }
+                                AgentState::Waiting => {
+                                    crate::sound::play(crate::sound::Sound::Request);
+                                }
+                                _ => {}
+                            }
+                        }
+
                         pane.detected_agent = agent;
                         pane.state = state;
                         break;
diff --git a/src/app/mod.rs b/src/app/mod.rs
index 62250fb8..47aaa3da 100644
--- a/src/app/mod.rs
+++ b/src/app/mod.rs
@@ -85,6 +85,7 @@ impl App {
             sidebar_collapsed: false,
             confirm_close: config.ui.confirm_close,
             accent: crate::config::parse_color(&config.ui.accent),
+            sound: config.ui.sound,
             keybinds: config.keybinds(),
         };
 
diff --git a/src/app/state.rs b/src/app/state.rs
index b0a81165..440bfc17 100644
--- a/src/app/state.rs
+++ b/src/app/state.rs
@@ -69,6 +69,7 @@ pub struct AppState {
     pub sidebar_collapsed: bool,
     pub confirm_close: bool,
     pub accent: Color,
+    pub sound: bool,
     pub keybinds: Keybinds,
 }
 
@@ -119,6 +120,7 @@ impl AppState {
             sidebar_collapsed: false,
             confirm_close: true,
             accent: Color::Cyan,
+            sound: true,
             keybinds: Keybinds {
                 split_vertical: (KeyCode::Char('v'), KeyModifiers::empty()),
                 split_horizontal: (KeyCode::Char('-'), KeyModifiers::empty()),