- Migration: add project_id FK to settings_locations - Models: ProjectSetting hasMany Location, Location belongsTo ProjectSetting - Settings: /settings/projects page — manage projects and their sub-locations (two-panel UI) - Sidebar: Projects nav item under Settings group - Routes: 7 new settings/projects routes (Admin only) - Modal: project_name and location fields now cascading dropdowns populated from settings_projects/settings_locations Co-Authored-By: Claude Sonnet 4.6 <[email protected]>