Use this when the user has several interests, projects or hobbies and asks for a plan for the next days or week, for example "I have 10 hours a week for an app, a book, guitar and Japanese: plan my week". Pass every interest as name plus a few words of note, hours_per_week, and start_date as the user's local YYYY-MM-DD. Optional: days (3 to 7, default 7), days_off, next_steps for an interest, lane when the user picked one, and spine in the user's words. When the user already had a lane plan and says in words what got done, also send done and not_done with lane set on each interest as last plan had it: the answer then reviews that plan, carries the missed build steps and keeps the parking lot. When they paste the plan text, use review_week. Returns the four lanes (build gets most minutes, reading is one chapter or paper, open is one side quest, the rest is parked with a bookmark), one spine sentence, the minute budget, the day-by-day plan with task ids, and todo_text: plain checkbox lines to paste into any todo app. Nothing is stored. Do not use it for one single task, a calendar booking, or a diagnosis.