fix(smolmachines): preflight print uses plan-level egress routes

`SmolmachinesBottlePlan.print` iterated over
`bottle.egress.routes` (the manifest's capitalized-attribute form
on `manifest.EgressRoute`) but accessed `r.host` (lowercase).
Worked when no egress routes were declared; AttributeError
("EgressRoute has no attribute 'host'") on the first bottle with
a route.

Switch to `self.egress_plan.routes` — the resolved plan-level
EgressRoute (lowercase `host`), same source the docker backend's
print uses.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

claude_bottle/backend/smolmachines/bottle_plan.py

@@ -89,7 +89,10 @@ class SmolmachinesBottlePlan(BottlePlan):
         upstreams = [
             f"{g.Name} → {g.Upstream}" for g in bottle.git
         ]
-        routes = [r.host for r in bottle.egress.routes]
+        # Use the resolved egress_plan (lowercase `host` on the
+        # plan-level EgressRoute) rather than `bottle.egress.routes`,
+        # which is the manifest's capitalized-attr form.
+        routes = [r.host for r in self.egress_plan.routes]
 
         print(file=sys.stderr)
         info(f"agent           : {spec.agent_name}")