fix: improve multi-link identity handling to prevent incorrect room state emissions

CHANGELOG.md

@@ -7,6 +7,8 @@ This project follows the versioning policy in VERSIONING.md.
 - Added core message type `ACTION` (`T_ACTION = 22`) routing with room-content semantics
 - Added advisory capability flag `CAP_ACTION` and now include `B_WELCOME_CAPS` in WELCOME payloads
 - ACTION bodies are forwarded as-is and are not interpreted as slash commands by the hub
+- Fixed multi-link identity handling: do not emit room `PARTED` or clear
+    hash-link index state when a peer still remains in the room via another active link (thanks, neutral for the patch!)
 
 ## 0.2.2 - 2026-01-09
 

rrcd/router.py

@@ -602,7 +602,15 @@ class MessageRouter:
                 if st is not None and not st.get("registered"):
                     self.hub.room_manager._room_state.pop(r, None)
 
-        if remaining_members and self.hub.identity is not None:
+        peer_still_in_room = False
+        if peer_hash:
+            for member_link in remaining_members:
+                other = self.hub.session_manager.sessions.get(member_link)
+                if other and other.get("peer") == peer_hash:
+                    peer_still_in_room = True
+                    break
+
+        if remaining_members and self.hub.identity is not None and not peer_still_in_room:
             notification_body = (
                 [peer_hash] if self.hub.config.include_joined_member_list else None
             )

rrcd/session.py

@@ -119,7 +119,8 @@ class SessionManager:
         rooms_count = len(sess.get("rooms") or ())
 
         if isinstance(peer, (bytes, bytearray)):
-            self._index_by_hash.pop(bytes(peer), None)
+            if self._index_by_hash.get(bytes(peer)) is link:
+                self._index_by_hash.pop(bytes(peer), None)
 
         if nick:
             self.update_nick_index(link, nick, None)
@@ -134,7 +135,15 @@ class SessionManager:
 
             self.hub.room_manager.remove_member(room, link)
 
-            if remaining_members and peer_hash and self.hub.identity:
+            peer_still_in_room = False
+            if peer_hash:
+                for member_link in remaining_members:
+                    other = self.sessions.get(member_link)
+                    if other and other.get("peer") == peer_hash:
+                        peer_still_in_room = True
+                        break
+
+            if remaining_members and peer_hash and self.hub.identity and not peer_still_in_room:
                 notification_body = (
                     [peer_hash] if self.hub.config.include_joined_member_list else None
                 )