Generalizes the RR-specific RR Loc-RIB Diff into a comparison of up
to four selectable routers. router1/router2 are required; router3/
router4 default to a '-- none --' sentinel and drop cleanly out of
every query (no empty-IN, no dangling predicates).
Panels: per-router prefix counts, divergent-prefix count, a presence
matrix (row per prefix, column per router, cell = best-path next-hop),
a divergence detail table classifying missing / next-hop / AS-path
disagreement, and a per-prefix all-paths drill-down. Once the GoBGP
global feed (E1) is up, GLOBAL-FEED is selectable as any of the four
for lab-vs-Internet diffing.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
