Fix 3 bugs in a Next.js + Supabase CRM (kanban persistence, search, dashboard totals)

I built a small sales CRM with Next.js 15 (App Router, TypeScript), Tailwind, and Supabase (Postgres with RLS). It runs and is seeded with data, but three bugs need fixing: 1. Kanban drag and drop does not persist. Cards move on screen, but the new stage and order are never saved to the deals table, so a refresh reverts the board. The drop handler needs to write stage_id and position while keeping the optimistic UI. 2. Contact search only matches the name column. It should also match company, email, and phone. Postgres ilike or full text, your call. 3. The dashboard pipeline value and the value-by-stage chart include won and lost deals. They should only count deals with status open. "Access to the GitHub repository and development environment will be provided after hiring." a seeded dev Supabase project, and a README that gets you running locally in about 10 minutes. Work on a branch and submit one PR with a short note on what changed. Done means all three verified against the steps above with no regressions. Fixed price, one milestone. Ideally delivered within 3 to 4 days. In your application, tell me which of the three you'd start with and roughly how