huskies: merge 1163 story Replace perm_rx lock-as-presence-signal with a permission router

server/src/service/gateway/io.rs

@@ -507,11 +507,7 @@ pub fn spawn_gateway_bot(
     gateway_projects_store: std::sync::Arc<tokio::sync::RwLock<BTreeMap<String, ProjectEntry>>>,
     port: u16,
     gateway_event_tx: Option<tokio::sync::broadcast::Sender<super::GatewayStatusEvent>>,
-    perm_rx: std::sync::Arc<
-        tokio::sync::Mutex<
-            tokio::sync::mpsc::UnboundedReceiver<crate::http::context::PermissionForward>,
-        >,
-    >,
+    permission_registry: std::sync::Arc<crate::service::permission_router::ResponderRegistry>,
 ) -> (
     Option<tokio::task::AbortHandle>,
     tokio::sync::watch::Sender<Option<crate::rebuild::ShutdownReason>>,
@@ -550,10 +546,8 @@ pub fn spawn_gateway_bot(
                 .map(|c| c.ambient_rooms.iter().cloned().collect())
                 .unwrap_or_default(),
         )),
-        perm_rx,
-        pending_perm_replies: std::sync::Arc::new(tokio::sync::Mutex::new(
-            std::collections::HashMap::new(),
-        )),
+        permission_registry,
+        pending_perm_replies: crate::service::permission_router::PendingPermReplies::new(),
         permission_timeout_secs: bot_cfg
             .as_ref()
             .map(|c| c.permission_timeout_secs)
@@ -599,9 +593,7 @@ mod tests {
         let active = std::sync::Arc::new(tokio::sync::RwLock::new("proj".to_string()));
         let (event_tx, _) = tokio::sync::broadcast::channel(4);
 
-        let (_perm_tx, perm_rx) =
-            tokio::sync::mpsc::unbounded_channel::<crate::http::context::PermissionForward>();
-        let perm_rx = std::sync::Arc::new(tokio::sync::Mutex::new(perm_rx));
+        let permission_registry = crate::service::permission_router::ResponderRegistry::new();
         let projects_store =
             std::sync::Arc::new(tokio::sync::RwLock::new(std::collections::BTreeMap::new()));
         let (handle, shutdown_tx) = spawn_gateway_bot(
@@ -610,7 +602,7 @@ mod tests {
             projects_store,
             3001,
             Some(event_tx),
-            perm_rx,
+            permission_registry,
         );
 
         // No bot.toml in tmp → no abort handle spawned.