Each logged action now stores a Firestore snapshot of the affected
encounter state. The /logs page shows an ↩ Undo button on any entry
with undo data; clicking it restores the encounter to its pre-action
state and marks the entry as rolled back (greyed out, strikethrough).
Covered actions: damage/heal, condition toggle, activate/deactivate,
add/remove participant, next turn, start/pause/resume/end combat.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Documents conditions list (now 22), combat log at /logs, hide player HP
toggle, inactive monster hiding, fullscreen button, and wake lock toggle.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
robert