New game

This is for the owner, who watches; nobody plays by typing. Narrate nothing.

1. Run python3 rules/rpg.py newgame $ARGUMENTS. The owner may have given a seed (/newgame ember-4821) or daily for today's world; with nothing, a new seed is chosen. This overwrites the active game's save with a fresh run built from its world file and its cast, so a run in progress ends there (its log stays in state/log/). The same seed always rolls the same run.
2. Tell the owner, in a few plain lines: the world (NEW GAME:), the seed, and who is in the cast, with their models and where each starts (CAST:). If FROM EARLIER RUNS lists places built or people befriended in earlier runs, say they're part of this world now. Don't repeat THIS RUN (the run's secrets) unless the owner asks.
3. The look that newgame prints at the end is the first person's view, for no one to read now: leave it. Nobody is told the opening here: each person's own opening reaches them in their first brief.
4. End by saying the run is ready, and that /rounds plays it.