Fix: resolve StaffLinkRequest NameError on startup

Final production push with CORS, model, and video fixes

fix: auto-create shell organization for team users during player/staff linking to improve onboarding

fix: resolve dependency conflict and update organization_id fetch for coaches and players

fix: allow organization profile creation if missing (upsert)

fix: allow coaches to fetch linked organization profile and stats

fix: staff access to organization profile and stats aggregation

fix: allow coaches to fetch linked organization profile

fix: add trailing slash fallback for staff-link

fix: change staff link endpoint to avoid routing conflicts

feat: complete team manager features and storage fixes

Deployment fix: clean backend only