Volunteer Application API

[vivjd]

Goal:
Allow volunteers to submit interest forms and admins to review, approve, or reject them.

Tasks:

• POST /api/volunteer-applications – submit new application (PENDING)
• GET /api/volunteer-applications – list all (admin only)
• PATCH /api/volunteer-applications/:id – approve or reject, set reviewed_by, reviewed_at
• On approval, auto-create User with role VOLUNTEER and temporary password or invite flow

Acceptance Criteria:

• Volunteers can submit forms without authentication
• Admins can view and update application status
• Approved applications create user accounts