- Auto-created transports carry auto_ref {from,to} stay ids; new
POST /api/trips/:id/transports/regenerate reconciles them against the
current stay order (re-date/re-title kept bridges preserving mode and
price, delete orphans, create missing) without touching manual
transports or flight-covered gaps
- Sync transports button in the calendar header with result toast
- The week band strip is now a drop target resolving the day from the
pointer position, so stays can be dropped onto spots covered by other
stays; overlapping stays stack in band lanes
grabowski
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