14 moves the pipe handling out of container.rs (a pure move, replayed on its
own); 15 starts threads with Builder and bounds output collection with a 2 s
grace period; 16 escapes container errors in the log and fixes two texts; 17
fixes toolkit's thread start, casts and the egress-proxy form. Each checked
against a reference, which is not kept. Tips T24 to T26 from this run.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
