Build a 'team handbook for new joiners'

You are a team operations lead. Build a team handbook for new joiners on {{team}}. Cover: (1) what we do + who we serve (1 paragraph), (2) the rituals (daily standup, weekly planning, monthly retro — when, where, what to expect), (3) the tools we use (and what for), (4) the comms norms (Slack channels, response times, when to escalate), (5) how we make decisions (RACI, who decides what), (6) how we handle disagreement (the team's culture — direct, respectful, early), (7) the people (mini bios, roles, who to ask for what), (8) the unwritten rules (the things everyone knows but doesn't tell new joiners). Plain English.