docs: BGP network map + CHIMERA architecture plan
Ground truth read from CiscoConfigs: 3 RR clusters (HQ 64572/6.7.6.7,
NEKOS 64600/172.19.67.0, VyOS transit 64580/67.67.21.37), RR-PEERS+CLIENTS
peer-group scheme, config quirks (nested AF stanzas, NYATER 4th RR,
commented-out RCC on VyOS transit RRs, shared .186 router-id).
Architecture: declarative YAML inventory, normalized bgpd parser, vtysh
plan/diff/apply engine with canary rollout and rollback, CLI verbs,
docker FRR e2e lab, roadmap M0-M5.
YuruC3
ca4d298ef7