Two bugs fixed:
1. buildClientAuthentication was placing issued leaf cert PEMs into
trusted_ca_certs. Caddy uses that field for CA chain validation, not
leaf pinning — putting leaf certs there made chain verification fail
for every presented client cert, causing the browser to be asked
repeatedly. Fixed by using trusted_leaf_certs for managed CAs.
2. If all issued certs for a CA were revoked, the active cert map would
be empty and the code fell back to trusting the CA cert directly,
effectively un-revoking everything. Fixed by tracking which CAs have
ever had issued certs (including revoked) and keeping them in
trusted_leaf_certs mode permanently (empty list = no one trusted).
Also fix CA certificate delete action not surfacing the error message
to the user in production (Next.js strips thrown error messages in
server actions). Changed to return { success, error } and updated the
client dialog to check the result instead of using try/catch.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>