Adv 2.0 D&D Phase 12 E1d: real-time day cycle (06:00 briefing / 21:00 recap)

Two new tickers in adventure.go startup. Each minute, when UTC clock hits
the trigger hour, walks every active expedition whose last_briefing_at /
last_recap_at is stale relative to today's threshold and fires it. Per-
expedition gating (rather than global db.JobCompleted) means a player who
started mid-day still gets their first briefing the next morning.

Briefing: applies one day's supply burn (harsh mult kicks in when threat
> 60 / siege / temporal stack > 0), advances current_day by one, picks
flavor.MorningBriefing<DayBand> (Day1/Day3/Day7/Day14/Day21 → otherwise
Generic), DMs the §12.1 block, appends a 'briefing' log entry, stamps
last_briefing_at.

Recap: scans today's log entries — boss kill picks
flavor.EveningRecapBossKilled, no combat + no narrative entries picks
EveningRecapNothingHappened, otherwise EveningRecapGeneric. DMs the
§12.2 block (HP-aware close-call detection deferred to E2 since it
needs combat hooks). Stamps last_recap_at.

Tests cover day-band selection, day advance + supply burn (incl. harsh
mult), threshold filtering, recap log entry creation, and boss-kill
override.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

internal/plugin/adventure.go

@@ -173,6 +173,8 @@ func (p *AdventurePlugin) Init() error {
 	go p.hospitalNudgeTicker()
 	go p.mortgageTicker()
 	go p.coopTicker()
+	go p.expeditionBriefingTicker()
+	go p.expeditionRecapTicker()
 
 	// Auto-cashout any arena runs left in 'awaiting' from a prior restart
 	p.arenaCleanupStaleRuns()