Plan the knowledge transfer before my engagement ends

Help me plan the knowledge transfer to a client's team before my engagement ends. What I built or ran for them: [systems, processes, campaigns, models, reports] Who takes it over: [ROLES and their current skill level] Engagement end date: [DATE] What only I know right now: [undocumented steps, logins, vendor contacts, workarounds] Post-engagement support agreed: [e.g. "2 weeks of email support", or "none"] Create: 1. An inventory of everything to hand over: assets, documents, access, recurring tasks, relationships, and open issues. 2. A transfer schedule working back from the end date: shadowing (they watch me), reverse shadowing (I watch them), then independent operation, with checkpoints. 3. A documentation plan: which runbooks, how-to guides, or decision logs to write, in what format, and the most important ones to write first. 4. A readiness checklist for each person taking over, with specific tasks they must perform successfully before I step away. 5. An access handover plan: transfer ownership of accounts to the client and remove my own access, with credentials handled through their password manager, never by email. 6. A closing message to the client sponsor summarizing what's been handed over, what remains open, and how post-engagement support works. Flag single points of failure where only one client person would know how to do something.