Adds the §7.1 tidal event hook: warnings on Days 4 and 5, peak event
on Day 6 with forced 2× supply burn (overrides tier-2 HarshMod 1.5×),
silenced if the boss has been defeated.
Wires zone-temporal events into deliverBriefing as two new hook points
— pre-burn (mutates burn multiplier) and post-rollover (appends
flavor-bearing log entries). Future E3b–E3f layer onto the same hooks.
Reuses the prewritten flavor.SunkenTempleTidalWarning / TidalEvent
pools per feedback_reuse_existing_flavor.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
