Add BS Pod NFL over-under tracking

[matsonj]

Summary

• add reviewed 2026 NFC Bill Simmons and Cousin Sal picks with live settlement logic
• add NFC summary page with projected wins, pick statuses, palette-aligned status formatting, and sidebar placement
• add dbt source/model/docs/tests and Evidence queries

Verification

• full pipeline passed
• Evidence production build passed
• browser-verified summary and team routes

[matsonj]

Code review: no actionable findings. Reviewed the full diff, changed-file boundaries, query/model behavior, validation tests, Evidence page, and sidebar metadata. Removed the obsolete team-page query and unused summary/model fields during review; the final projection query also preserves NULL when simulation data is unavailable. Local validation passes: targeted dbt build (25/25) and Evidence production build. GitHub CI is still pending.