Add rival duels, babysitting service, multilingual !define, economy tuning

Rival System:
- RPS-based duels between combat level 5+ players (best of 3, ties re-prompt)
- Stakes scale with level, split 50/50 between winner and community pot
- 3-4 day randomized challenge interval, 7-day same-pair cooldown
- 24h response window with auto-forfeit
- Full flavor text pools, character sheet integration, !adventure rivals

Babysitting Service:
- Weekly/monthly auto-play service targeting weakest skill
- Babysitter rerolls death, claims items, credits gold and XP
- Rivals automatically declined during service
- End-of-service summary with diaper report

Revive fixes:
- On-demand revive in handleMenu, parseAndResolveChoice, handleStatus
- Morning DM respawn check now runs before babysit interception
- Players no longer stuck dead after DeadUntil expires mid-day

Other changes:
- Multilingual !define searches all DreamDict languages by default
- TwinBee empty haul now shows "jackshit" instead of blank
- Wordle solve payouts increased (e.g. 1-guess: €100 -> €500)
- Per-message euro payouts doubled across all tiers
- Audit fixes: user locks on RPS/babysit handlers, TOCTOU on gold
  transfers, dead code removal, deprecated strings.Title replaced,
  error logging on silent failures

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

internal/plugin/adventure_scheduler.go

@@ -60,9 +60,9 @@ func (p *AdventurePlugin) sendMorningDMs() {
 			time.Sleep(time.Duration(1000+rand.IntN(2000)) * time.Millisecond)
 		}
 
-		// Check if dead and ready to respawn
+		// Check if dead and ready to respawn (before babysit check so
+		// dead+babysitting characters don't stay stuck dead forever).
 		if !char.Alive && char.DeadUntil != nil && now.After(*char.DeadUntil) {
-			// Revive
 			char.Alive = true
 			char.DeadUntil = nil
 			if err := saveAdvCharacter(&char); err != nil {
@@ -77,6 +77,16 @@ func (p *AdventurePlugin) sendMorningDMs() {
 			}
 		}
 
+		// Babysitting: auto-resolve daily action, skip DM
+		if char.BabysitActive {
+			if !char.Alive {
+				// Dead and not yet ready to respawn — skip babysit action
+				continue
+			}
+			p.runBabysitDaily(&char)
+			continue
+		}
+
 		// If still dead, send death status
 		if !char.Alive {
 			text := renderAdvDeathStatusDM(&char)
@@ -365,6 +375,12 @@ func (p *AdventurePlugin) midnightReset() error {
 		return true
 	})
 
+	// Expire any rival challenges that went unanswered
+	p.expireRivalChallenges()
+
+	// Check babysitting service expirations
+	p.checkBabysitExpiry(chars)
+
 	return nil
 }