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Maintenance contracts - New fusion.repair.maintenance.contract model: one per partner + product + lot. Fields: interval_months, last_service_date, next_due_date, state, booking_token (secrets.token_urlsafe), last_reminder_band (30 / 7 / 1), booking_repair_id - roll_next_due_date() advances the cycle by interval_months and resets the band / booked-repair so the next cycle starts fresh - sale.order._spawn_maintenance_contracts() creates contracts for delivered SOs whose product has x_fc_maintenance_interval_months > 0 (called from Phase 3 hooks; ready for cron / on-state change wiring) Reminder cron - Daily ir.cron at 07:00 -> cron_send_due_reminders() - Sends email at 30 / 7 / 1 day bands before next_due_date; tracks last_reminder_band so we never re-send the same band in one cycle - Master toggle via ir.config_parameter fusion_repairs.enable_email_notifications Public client booking portal - /repairs/maintenance/book/<token> GET landing page with a date input - /repairs/maintenance/book/<token>/confirm POST creates a repair.order via contract.create_repair_from_booking() (source='client_portal') - Idempotent: existing booking shows "already booked" instead of spawning a duplicate - Invalid / expired tokens render a friendly "link not valid" page Mail template - email_template_maintenance_due_reminder with 4px green accent bar, 600px max-width, dark/light safe; renders the tokenized booking CTA button directly to /repairs/maintenance/book/<token> Backend - Maintenance Contracts list / form with statusbar + chatter - Menu under Operations -> Maintenance Contracts - Sequence MC/##### for contract reference - Access rules: User read, Dispatcher write, Manager full Verified end-to-end on local westin-v19: - Contract MC/00003 created due in 7 days - cron_send_due_reminders() fires the 7-day band; second invocation skips (idempotent) - create_repair_from_booking() spawns BR-WA/RO/00014 with x_fc_intake_source='client_portal' and links it back to the contract - HTTP GET /repairs/maintenance/book/<token> -> 200 with the date input and contract reference visible in the page Co-authored-by: Cursor <cursoragent@cursor.com>