v7.1.3 — Intern-only filter
Patch on v7.1.2.
- Intern-only mode (INTERN_ONLY=1, default): keeps ONLY internship / graduate-program / trainee roles; drops mid/senior roles (Product Manager, Senior PM, Analyst, Associate).
- Applied in the prefilter, job_ingestion, AND the Excel export (so legacy non-intern rows already scored in the DB no longer appear).
- Effect: jobs_master.xlsx went from 447 rows to 94, all internship/graduate.
- 1199 tests passing.