Capture the non-obvious implementation gotchas from PR #7
(terminal-layout-statusbar) in TECHNICAL.md: wrapper-vs-host xterm
padding, global StatusBar controls, recordingSessionIdRef transcript
pinning, active-only Jump-to-Current state, and the Zustand
object-merge rule for publishing action callbacks.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>