Remote directory sync now snapshots after every 5 writing tool calls

What

When Claude works in a remote container, the working folder is synced back to your side using snapshots, which are copies of the folder at one moment. The rule for when a snapshot is taken has changed:

• A snapshot is due once 5 writing tool calls of unknown kind have built up. A tool call is one action Claude takes, such as running a command.
• Snapshots stop after 3 consecutive failures.
• The count resets after each snapshot finishes.
• Snapshots that were cancelled are ignored, and snapshots that found nothing changed no longer count as failures.
• The old timing is gone: idleStrikes, lastAttemptAt, dirtySince, lastHintKind, the minimum gap between attempts and the quietMs/maxWaitMs timers.

The gates named tengu_dir_sync_stream_ship and tengu_dir_sync_snapshot_read_abandoned are involved. Nothing has been read about either.

Why

This changes how often, and when, file changes made in a remote session appear on your side. Updates now follow how much Claude has written rather than how long things have been quiet.