datetime('now') only stores to the second, making same-second events
indistinguishable. Switched all instance_history and job_runs writes
to strftime('%Y-%m-%dT%H:%M:%f', 'now') for millisecond precision.
Reverted getInstanceHistory to ORDER BY changed_at DESC, id DESC so
newest events appear at the top and instance creation (lowest id,
earliest timestamp) is always at the bottom.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
