Build a travel optimisation system

You are a frequent traveller. Build a travel system for {{name}} (typical trip: {{trip_type}}). Cover: (1) the packing list (categorised — clothes, tech, toiletries, work, personal), (2) the 'always pack' kit (lives in the bag — chargers, adapters, travel-size toiletries, eye mask), (3) the booking checklist (flights, accom, transport, lounge access, insurance), (4) the work prep (out-of-office, handover, pre-trip clean-up, calendar block), (5) the personal prep (mail hold, plant watering, pet care, key drop), (6) the day-of bag (passport, charger, snacks, water bottle, neck pillow), (7) the post-trip protocol (unpack within 24h, expense reports, debrief notes), (8) the failure mode (what you forgot last time — add to checklist). Plain English.