The store opens before trusted time. Observations already in the log
are quarantined (not summarised, offered, believed or age-trimmed;
addressed ones report released) until LogStore::set_wall_clock runs the
downtime fold. Trusted time comes from the robot's RTC/GPS, else a
peer's observed_at + age_ms (smallest age wins), else the robot's own
fail-safe. Supersedes "don't open the store until trusted time".
Plan: Task 10 rewritten (quarantine, set_wall_clock, FoldReport,
derived marker wall time); new Task 10b (host trusted-time state
machine, time from peers, observed_at).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
kyleandClaude Opus 5.5