pkg/stereopair's sameRoles and pkg/service/datastore's
sameGroupGenerationTopology independently reimplemented the same
Role-keyed topology comparison, but normalized IP addresses
differently (net.ParseIP-only vs. plain string equality) -- exactly
the class of disagreement models.SameGroup was already created to fix
for order-sensitivity. Both now delegate their per-role comparison to
a new models.SameGroupRoles, which treats equal-but-differently-
formatted IPs as a match without regressing the common
both-addresses-unset case either implementation relied on.
models.SameGroup and datastore's sameStereoPair stay distinct
(commented why): both are intentionally ID/IP-agnostic for reasons
unrelated to this consolidation.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Tobias GesellchenandClaude Sonnet 5
b534bc5615