The Playbook is where guidance lives: wishes, instructions, and the story you want survivors to understand. Regrets and truths may deserve their own space — not because shame belongs in software, but because access rules should match sensitivity.
The Vault is the high-trust layer for material that should not leak through casual browsing. Different surfaces exist so you are not one mis-click away from the wrong audience.
Write for stress, not for polish
Future readers may be tired or grieving. Short sections and clear headings beat elegant prose nobody can find.