style: cargo fmt on today's new code (883/884/886/opus-pin)

The mergemaster gates run rustfmt and rejected 864's merge because
several files I added/touched in master today had not been fmt'd.
Six files affected, mostly trivial line-wrapping nits. Fixes the
formatting gate for the next 864 merge attempt.

server/src/chat/transport/matrix/bot/permission_listener.rs

@@ -36,9 +36,7 @@ pub fn spawn_permission_listener(
     tokio::spawn(async move {
         let mut perm_rx = services.perm_rx.lock().await;
         let target_room_str = target_room.as_str().to_string();
-        slog!(
-            "[matrix-bot] permission listener started; forwarding requests to {target_room_str}"
-        );
+        slog!("[matrix-bot] permission listener started; forwarding requests to {target_room_str}");
 
         while let Some(perm_fwd) = perm_rx.recv().await {
             let prompt_msg = format!(
@@ -131,13 +129,7 @@ mod tests {
             Ok("$test_event_id:example.com".to_string())
         }
 
-        async fn edit_message(
-            &self,
-            _: &str,
-            _: &str,
-            _: &str,
-            _: &str,
-        ) -> Result<(), String> {
+        async fn edit_message(&self, _: &str, _: &str, _: &str, _: &str) -> Result<(), String> {
             Ok(())
         }
 
@@ -146,19 +138,14 @@ mod tests {
         }
     }
 
-    fn test_services_with_tx() -> (
-        Arc<Services>,
-        mpsc::UnboundedSender<PermissionForward>,
-    ) {
+    fn test_services_with_tx() -> (Arc<Services>, mpsc::UnboundedSender<PermissionForward>) {
         let (perm_tx, perm_rx) = mpsc::unbounded_channel();
         let services = Arc::new(Services {
             project_root: std::path::PathBuf::from("/tmp/test"),
             agents: Arc::new(crate::agents::AgentPool::new_test(3000)),
             bot_name: "Assistant".to_string(),
             bot_user_id: "@bot:example.com".to_string(),
-            ambient_rooms: Arc::new(std::sync::Mutex::new(
-                std::collections::HashSet::new(),
-            )),
+            ambient_rooms: Arc::new(std::sync::Mutex::new(std::collections::HashSet::new())),
             perm_rx: Arc::new(TokioMutex::new(perm_rx)),
             pending_perm_replies: Arc::new(TokioMutex::new(HashMap::new())),
             permission_timeout_secs: 120,