[FEAT] Add all frontend pages - complete UI for NIS2 platform
- risks.html: Risk register with 5x5 matrix heatmap, treatments, AI suggest
- incidents.html: Incident management with NIS2 Art.23 timeline (24h/72h/30d)
- policies.html: Policy management with templates, approval workflow, AI generate
- supply-chain.html: Supplier registry with 10-question security assessment
- training.html: Courses, assignments, compliance status tracking
- assets.html: Asset inventory with dependency mapping
- reports.html: Compliance report, controls, audit log, ISO 27001 mapping
- settings.html: Organization, profile, members, security settings
- admin/index.html: Platform admin dashboard with stats
- admin/organizations.html: Organization management for super_admin
- admin/users.html: User management for super_admin
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>