Multi-day event support with per-day activation times

Summary Users need the ability to book a single multi-day event under one contract while assigning distinct start/end activation times to each individual date — without manually editing contracts or creating duplicate events. Problem Multi-day events (e.g. June 1–3) currently display as a single all-day block with no way to set different activation windows per day. Workaround requires creating one separate event per date, which breaks contract continuity and forces manual contract edits. At scale (e.g. 14-date sports team contract), this becomes a major operational burden. Desired outcome A single event/contract can span multiple dates, each with its own configurable activation time window (up to ~7 individual dates; 5 or fewer is most common). Calendar view reflects per-day activation hours rather than a generic all-day block. Contract auto-populates the per-day schedule without manual editing. Additional context Most activations are 5 days or fewer. Beyond that, times tend to be consistent across days. A lightweight "activation date" sub-form (up to 7 slots) on the event record would likely cover the majority of use cases.