test(net): measure a paths-alone route prototype against Babel's distance

quest/m2/cache-routing-proof.md

@@ -29,13 +29,18 @@ second trip to the maintainer for choosing lite-07.
 
 Reopened 2026-11-11 (maintainer, /quest-plan on the route redesign, epic
 Plan item 8): a warm route propagates, and the rule that keeps it free of
-loops and stale copies is
-[the prototype](/quest/m1/route-stale-copies.md)'s to pick.
-The eligibility rule and the fixtures below are for the one-hop warm route
-first decided, which [moq-dev/moq#8457](https://github.com/moq-dev/moq/pull/8457)
-proves. Once the prototype's pick is recorded, rewrite both for it: the
-fixtures keep their meshes, and gain a relay that joins a copy at a neighbour
-farther from the publisher than itself.
+loops and stale copies is the route's path
+([routes epic](/quest/m2/cluster-routing/routes/README.md) Plan item 27,
+picked 2026-11-11 on
+[moq-dev/moq#8533](https://github.com/moq-dev/moq/pull/8533)). The eligibility rule
+and the fixtures below are for the one-hop warm route first decided, which
+[moq-dev/moq#8457](https://github.com/moq-dev/moq/pull/8457) proves. Rewrite
+both for the pick: the fixtures keep their meshes, and gain a relay that
+joins a copy at a neighbour farther from the publisher than itself. Start
+from `rs/moq-net/src/route/tests/copies.rs`, which runs that join, two
+relays that start carrying together, and a copy that goes, on the prototype
+router. It ranks carriers by a hash of the broadcast and the carrier; the
+proof settles whether that rank is the rule.
 
 Build on the sans-IO `Router` in `rs/moq-net/src/route/`, which each
 origin's `route::Node` drives, and the harness behind its handoff sweeps,
@@ -80,10 +85,6 @@ Route ID, and the instance, and say which stream carries it and how a peer
 that never sends one behaves. Size it against lite-07 and an additive SETUP
 extension and record the choice and its reason in the epic's Plan.
 
-## Required
-
-- [A prototype settles what keeps a route free of stale copies](/quest/m1/route-stale-copies.md) - the rule a propagating warm route rests on, which replaces the one this proved
-
 ## Related
 
 - [Routes and announces](/quest/m2/cluster-routing/routes/README.md) - the feasibility rules and handoff sweeps this extends

quest/m2/cluster-routing/README.md

@@ -39,16 +39,19 @@ Decided with the maintainer, 2026-10-13:
   detection, additional routing recovery, and total interruption separately.
   Reopened 2026-11-11 (maintainer, /quest-plan after
   [moq-dev/moq#8487](https://github.com/moq-dev/moq/pull/8487)'s reviews):
-  whether Babel's distance stays is
-  [the prototype](/quest/m1/route-stale-copies.md)'s to
-  measure, against paths alone with a withdrawal that names the hop that
-  died. The distance refuses a longer way round until the publisher advances
-  its seqno, and refuses a cached copy at a neighbour no closer to the
+  the distance refuses a longer way round until the publisher advances its
+  seqno, and refuses a cached copy at a neighbour no closer to the
   publisher, which [cache-aware routing](/quest/m3/cache-routing/README.md)
   wants to join. Decided the same day: a route is shared per publisher and
-  per scope, and a relay believes a route by that route's own path, whichever
-  rule wins. Rejected: link-state among relays, and routes to relays in
-  place of publishers.
+  per scope, and a relay believes a route by that route's own path. Rejected:
+  link-state among relays, and routes to relays in place of publishers.
+  Decided 2026-11-11 (maintainer, on the measurements of
+  [moq-dev/moq#8533](https://github.com/moq-dev/moq/pull/8533)): Babel goes. A route is
+  kept free of loops by its path, a withdrawal that names the hop that died,
+  holds, and a timed doubt
+  ([routes epic](/quest/m2/cluster-routing/routes/README.md) Plan item 27). A
+  detour no longer waits on the publisher, and today's router keeps Babel
+  until [the router quest](/quest/m2/cluster-routing/routes/scope.md) lands.
 - An origin declares its own routing identity, fresh per process or tab
   restart and shared across its live sessions. It is unverified. Decided 2026-11-02 (maintainer, /quest-unblock): no
   key proof is planned; if a use case needs a provable identity, moq-lite-07's