Bridge changes:
- Wait for at least one user to JOIN before starting monop
- Ensures observer is in channel to see all setup messages
Parser changes:
- Handle 'Player N, say me' even without prior 'How many players?'
- Infer num_players_expected from highest player number seen
- Emit state during setup phase
run_game.py changes:
- 3s stagger between bot joins so setup is visible in web UI
- Observer connects before bots to catch all registration messages
