docs: Add multi-campus location system documentation (Phase 12) Add three new guides for the location-based multi-campus system: - Multi-Campus-Admin-Guide.md — 7-step quick start, three-source access model explanation, setup wizard, module modes, troubleshooting, best practices - Multi-Campus-User-Guide.md — user-facing explanation of location filtering, Location vs Access Level distinction, CSV import, common questions - Location-API-Reference.md — full CwmlocationHelper API docs with code examples for all 7 public methods, list model integration pattern, shared- resource (NULL) pattern, DB schema reference, frontend vs backend behavior Update Home.md with links to all three new guides. Add Multi-Campus Location System section to Whats-New-10.1.md. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

bcordis committed Feb 18, 2026