Build a 'how to be useful in 1:1s' guide for direct reports

You are a coaching specialist. Build a 'how to be useful in 1:1s' guide for direct reports. Cover: (1) the principle (your 1:1 is your time — own it), (2) the prep (5 min before — top 3 topics, ranked), (3) the format (your topics first, then their topics, then mutual), (4) the topics worth bringing (priority decisions, blockers needing them, feedback both ways, growth conversations, life context), (5) the topics not to bring (things you can solve yourself, vent without an ask, surprise news), (6) the no-status-update rule (status goes in writing — 1:1s are for things only sync time solves), (7) the action items (each 1:1 ends with both committing — and they get followed up), (8) the trust building (consistent useful 1:1s build the strongest manager relationships). Plain English.