Pete news code-review fixes: realm-first ordering, parked-row reap, death-emit gate

- emitZoneClearNews: claim realm-first before the name guard so an unnamed
  straggler's first clear seeds news_realm_firsts (else the next named
  clearer is mis-announced as first-ever). Mirrors backfillZoneFirsts.
- RunMaintenance: reap permanently-parked pete_emit_queue rows (unsent,
  >30d) so a durable Pete outage can't accrete rows forever.
- emitDeathNews: gate on Enabled()/newsEmissionOn() before the char DB
  reads; markAdventureDead fires per-member on party wipes + in the sim.

internal/db/db.go

@@ -619,6 +619,11 @@ func RunMaintenance() {
 		// Pete adventure-news queue — reap delivered rows (kept only for
 		// idempotency); undelivered rows stay so the sender can retry/park them.
 		{"pete_emit_queue", `DELETE FROM pete_emit_queue WHERE sent_at IS NOT NULL AND sent_at < ?`, []interface{}{cutoff7d}},
+		// ...and reap permanently-parked rows: the sender exhausts its retries
+		// within a few hours, so anything still unsent after 30 days is dead
+		// weight the drain query already skips — drop it so a durable outage
+		// can't accrete rows forever.
+		{"pete_emit_queue_parked", `DELETE FROM pete_emit_queue WHERE sent_at IS NULL AND created_at < ?`, []interface{}{cutoff30d}},
 
 		// Rate limits — purge entries older than today
 		{"rate_limits", `DELETE FROM rate_limits WHERE date < ?`, []interface{}{today}},