- PeerSyncWorker reads DADNS_PEER_SYNC_PEER_URL / _USERNAME / _PASSWORD env
vars to populate a single peer without a config file; deduped against any
config-file peers so the URL never appears twice
- 2 new tests (119 total, all passing)
- README: peer sync single-peer env var table; Topology C compose example
updated to use env vars only (no config file needed for two-node setup)
- README: document cybercinch/coredns_mysql_extend built-in file caching —
serves from cache during MySQL outages, eliminates per-query round-trips
Migrate remaining session.query() calls in coredns_mysql.py to
select()/session.execute() style; update bulk delete to delete()
construct and count to func.count(); drop sessionmaker(bind=).
Update test fixtures and assertions to match.
Zero session.query() calls remaining across the entire codebase.
