CI / Build & Test (push) Successful in 3m46s
- SECURITY.md: Note that we install to system store and run update-ca-certificates; add that Chrome/Firefox may not use it. - Add step-by-step instructions to manually import the CA into Chrome/Chromium and Firefox on Linux (path to ca.cert.pem). - INSTALLATION.md: In first-time setup, add Linux note and link to SECURITY.md for manual import.