Add a second detection path alongside ASN lookup: a self-maintained
list of university domains (uni_domains.txt) loaded at startup.
- New /lookup params: email= (extracts domain from address), domain= unchanged
- Suffix matching: insti.uni-stuttgart.de matches list entry uni-stuttgart.de
without false-positives (evil-uni-stuttgart.de does not match)
- New response fields: asn_match, domain_match, matched_domain (omitempty)
- nren remains true if either asn_match OR domain_match is true (backwards compat)
- /healthz now returns JSON body: {"asn_count":N,"domain_count":N}
- asn-updater: new update_uni_domains() merges hs-kompass.de TSV + Hipo JSON
(configurable via UNI_DOMAIN_COUNTRIES / HS_KOMPASS_URL env vars)
- 7 new tests; all existing tests pass unchanged
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
