feat: enhance room data retrieval with server domain extraction

src/app/paarrot-api.ts

@@ -305,12 +305,19 @@ async function getChannels(matrixClient: any) {
 
   return rooms
     .filter((room: any) => !room.isSpaceRoom())
-    .map((room: any) => ({
-      roomId: room.roomId,
-      name: room.name || 'Unnamed Room',
-      isDirect: room.getMyMembership() === 'invite' ? false : room.guessDMUserId() !== null,
-      avatar: room.getMxcAvatarUrl() || null,
-    }))
+    .map((room: any) => {
+      // Extract server domain from roomId (!localpart:domain.tld)
+      const serverMatch = room.roomId.match(/:(.+)$/);
+      const server = serverMatch ? serverMatch[1] : null;
+      
+      return {
+        roomId: room.roomId,
+        name: room.name || 'Unnamed Room',
+        server: server,
+        isDirect: room.getMyMembership() === 'invite' ? false : room.guessDMUserId() !== null,
+        avatar: room.getMxcAvatarUrl() || null,
+      };
+    })
     .sort((a: any, b: any) => a.name.localeCompare(b.name));
 }
 
@@ -362,9 +369,14 @@ async function getCurrentRoom(matrixClient: any) {
     throw new Error(`Current room not found: ${currentRoomId}`);
   }
 
+  // Extract server domain from roomId (!localpart:domain.tld)
+  const serverMatch = room.roomId.match(/:(.+)$/);
+  const server = serverMatch ? serverMatch[1] : null;
+
   return {
     roomId: room.roomId,
     name: room.name || 'Unnamed Room',
+    server: server,
     avatar: room.getMxcAvatarUrl() || null,
     isDirect: room.guessDMUserId() !== null,
   };