Add security threat model (THREAT_MODEL.md + SECURITY.md + AGENTS.md)#127

mboapache merged 2 commits into

apache:mainapache/db-jdo:mainfrom

potiuk:asf-security/threat-model-2026-06-09potiuk/db-jdo:asf-security/threat-model-2026-06-09Copy head branch name to clipboard