feat(models): add screening run and scoring tables

feat(api): expose the rubric template catalogue over HTTP

test(infra): cover the rubric tables in the live drift guard

test(security): add failing prompt-injection sanitization suite

test(db): add failing migration suite

feat: scaffold CV screener serving layer with ingestion pipeline, REST API routers, repositories, storage, parsing, security, and integration/unit test foundations

test(api): add Phase 0-1 suite with 59 tests at 93 percent coverage