[EPIC 9] Settings & Admin

[smartjef]

Overview

User profile/settings page, password change, and complete Django admin configuration for super_admin.

Milestone: M5 — Days 12–14

Sub-issues

• User profile and settings page #42 — User profile and settings page
• Django admin configuration for all models #43 — Django admin configuration for all models

Definition of Done

• Users can update their name, phone, and organisation in Settings
• Password change with wrong current password returns inline error
• Django admin shows all 7 models with correct fields and filters
• AuditLog in admin is read-only