Bounded settle/cancel reloads return the latest 30 messages, not a
prefix of the visible window. The shorter-terminal preserve path only
compared prefixes, so a long session dropped the Connection-interrupted
marker. Anchor persist also ran before _oldestIdx was refreshed from
the bounded response, writing the scene against the wrong transcript
row.
- Treat a suffix match like a prefix match when preserving the terminal
recovery marker
- Refresh _messagesTruncated / _oldestIdx before attaching/persisting
the projected scene on settle, cancel, and apperror
- Document the msg_limit=30 / msg_limit=all contract
- Add runtime + source-order regression tests
happy5318
f4b28346e5
