Async REPL Protocol When working with Agentica's async REPL harness for testing. Rules 1. Use for Future-returning tools 2. Single code block per response Compute AND return in ONE block. Multiple blocks means only first executes. `python GOOD: Single block content = await view file(path) return any(c.isdigit() for c in content) BAD: Split blocks (second block never runs) content = await view file(path) ---