New game

1. Run python3 rules/rpg.py newgame $ARGUMENTS. The player 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 one built from its world file. The same seed always rolls the same stats, variants, clock and dice.
2. Read the world file with python3 rules/rpg.py show world. The start room's text is the ROOM TEXT: at the end of what newgame printed.
3. Narrate the opening from the world file's Opening section, then describe the start room as the gm-turn skill directs. Follow the room file's ## If sections and the exits that look reported. FROM EARLIER RUNS lists places the player built and people they befriended in earlier games: they're simply part of this world now. Read them with rpg.py show when they come up, and let a returning friend's one remembered line colour how they greet the player.
4. End by inviting the player to act. From here on, every player message goes through gm-turn.