Implements Task 7. Deliberate lockout-safe ordering (vlan-filtering LAST) with
:if [find] guards that adopt the existing defconf bridge/ports rather than
recreating them. Membership Jinja: trunk ports tagged per tagged_vlans, access
ports untagged per pvid, bridge/CPU tagged only on the mgmt VLAN; else={set} makes
membership declarative. Jinja render validated offline against the placeholder
topology. Device run DEFERRED to an on-site session with a recovery channel
(remote bench has no serial/WinBox-MAC fallback). Topology stays placeholder.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
