feat: add composite index for deadline dashboard performance

[jackson-jpeg]

What

Created Supabase migration to add composite index on (case_id, deadline_date, status) for deadlines table to optimize dashboard queries.

Task

Create database index migration for deadline_service.py performance: composite index on (case_id, due_date, status) to speed up dashboard queries

Changes

• backend/supabase/migrations/007_add_deadlines_dashboard_index.sql

---

Automated by Eevee 🦊

[vercel]

Deployment failed with the following error:

Resource is limited - try again in 3 hours (more than 100, code: "api-deployments-free-per-day").

Learn More: https://vercel.com/jackson-sangers-projects?upgradeToPro=build-rate-limit