fix(core): resolve scheduler async syntax error and robust coroutine handling

- Handle coroutine objects in addition to functions in dispatch_with_entropy
- Prevent RuntimeWarning for unawaited coroutines

src/core/scheduler.py

@@ -36,7 +36,10 @@ class EntropyScheduler:
         # Pre-execution jitter (simulate human hesitation)
         await asyncio.sleep(random.uniform(0.1, 0.8))
         
+        # Execute the task
         if asyncio.iscoroutinefunction(task):
             await task()
+        elif asyncio.iscoroutine(task):
+             await task
         else:
             task()