Patch release that changes the default RUST_LOG setting for headless (-p) runs so that only the final answer is emitted unless logging is explicitly enabled.
Changelog
[changed] In headless mode (-p), RUST_LOG now defaults to off. Logs no longer appear on stderr by default; set RUST_LOG=error (or a broader level) to restore previous behavior.
Under the hood
Internal telemetry payload for session signals now includes a toolsUsed field.
