Admin Dashboard

Build an internal admin dashboard with the following features:

**Access Control:**
- Only users with role = 'admin' in Supabase can access the dashboard
- Non-admins are redirected to a "Not Authorised" page
- Sign-in via Supabase Auth with email + password

**Navigation:**
- Sidebar: Users, Content, Orders, Settings, Audit Log
- Top bar: search (searches across users by email), current admin name + sign-out

**Users Page:**
- Searchable, paginated table with columns: Avatar, Name, Email, Plan, Status (Active/Suspended), Created At, Last Active
- Row actions: View Profile, Impersonate (generate a magic link), Suspend, Delete
- "Add User" button opens a modal to invite a new user by email
- Bulk actions: suspend/delete selected rows

**Content Page (CRUD):**
- Table of records (e.g., blog posts, products, jobs)
- Create/Edit modal with all fields, image upload to Supabase Storage
- Delete with confirmation dialog
- Filter by status: Draft, Published, Archived

**Audit Log:**
- Append-only table showing every admin action: admin name, action (e.g., "suspended user X"), resource, timestamp, IP address
- Exportable to CSV
- Filter by admin, action type, date range

**Design:**
- Compact tables with sortable columns
- Dense layout — admins want information density, not whitespace
- Neutral palette with a single accent colour for destructive actions (red)
- Keyboard shortcuts: / to focus search, Esc to close modals

Store everything in Supabase. Every mutation writes to the audit_log table. Use Row Level Security so non-admins can't even SELECT admin tables.