feat(chat): support chat resources, implement chat-based remote discovery via resource messages

backend/src/chat.py

@@ -53,7 +53,7 @@ class Thread:
 
         self.messages = []
         self.notes = []
-        self.memories = []
+        self.resources = []
 
 class ChatView:
     def __init__(self, app, chat_id, participant_type=None, participant_id=None):
@@ -157,8 +157,8 @@ class ChatView:
 
             if message.kind == 'note':
                 thread.notes.insert(0, message)
-            elif message.kind == 'memory':
-                thread.memories.insert(0, message)
+            elif message.kind == 'resource':
+                thread.resources.insert(0, message)
             else:
                 thread.messages.insert(0, message)