Add detailed Copilot instructions and enhance child API logging

- Introduced a comprehensive instructions document for the Reward project, outlining architecture, data flow, key patterns, and developer workflows.
- Enhanced logging in the child API to track points and reward costs, improving error handling for insufficient points.
- Updated Vue components to reflect changes in reward handling and improve user experience with pending rewards.

events/sse.py

@@ -29,6 +29,7 @@ def get_queue(user_id: str, connection_id: str) -> queue.Queue:
 def send_to_user(user_id: str, data: Dict[str, Any]):
     """Send data to all connections for a specific user."""
     logger.info(f"Sending data to {user_id} user quesues are {user_queues.keys()}")
+    logger.info(f"Data: {data}")
     if user_id in user_queues:
         logger.info(f"Queued {user_id}")
         # Format as SSE message once
@@ -37,8 +38,6 @@ def send_to_user(user_id: str, data: Dict[str, Any]):
         # Send to all connections for this user
         for connection_id, q in user_queues[user_id].items():
             try:
-                logger.info(f"Sending message to {connection_id}")
-                q.put(message)
                 q.put(message, block=False)
             except queue.Full:
                 # Skip if queue is full (connection might be dead)
@@ -61,7 +60,6 @@ def sse_response_for_user(user_id: str):
         try:
             while True:
                 # Get message from queue (blocks until available)
-                logger.info(f"blocking on get for {user_id} user")
                 message = user_queue.get()
                 yield message
         except GeneratorExit: