fix: prevent unnecessary retries on last attempt in ID generation

Co-authored-by: aider (openrouter/openai/o3-mini-high) <aider@aider.chat>

amqp/adapter/consul_global_id_generator.py

@@ -83,13 +83,14 @@ def get_unique_instance_id(config: AMQAdapter) -> int:
                 logger.debug(f"Successfully obtained unique ID: {new_value}")
                 return new_value
             logger.debug(f"CAS update failed on attempt {attempt + 1}, retrying...")
-            time.sleep(retry_delay_seconds * (1 << attempt))  # Exponential backoff
-            index, data = c.get(consul_counter_key)
-            if data is None:
-                logger.error("Counter disappeared during update")
-                return generate_fallback_id()
-            current_value = int(data["Value"].decode("utf-8"))
-            new_value = current_value + 1
+            if attempt < max_retries - 1:
+                time.sleep(retry_delay_seconds * (1 << attempt))  # Exponential backoff
+                index, data = c.get(consul_counter_key)
+                if data is None:
+                    logger.error("Counter disappeared during update")
+                    return generate_fallback_id()
+                current_value = int(data["Value"].decode("utf-8"))
+                new_value = current_value + 1
         logger.error(f"Failed to update counter after {max_retries} attempts")
         return generate_fallback_id()
     except Exception as e: