fix(P2): add metrics domain to sync_to_nova.sh — consumer export views (REQ-229)

The metrics/ export views (README.md, TRUST_SNAPSHOT.md, powerbi/) are
consumer-facing but fell outside the original 13 domains, so the first nova
release left them untracked. Adds a 14th domain 'metrics' between docs and
workflows. Updates TestSyncToNovaScript domain-order assertion to 14.

---ci---
project: acdl
phase: 2
milestone: v1.19
status: complete
phase_role: final
---/ci---

scripts/sync_to_nova.sh

@@ -41,7 +41,8 @@
 #   10 scripts     scripts/**   (consumer runbooks only; internal scripts excluded)
 #   11 tests       tests/**
 #   12 docs        docs/**
-#   13 workflows   .github/**, workflows-src/**
+#   13 metrics    metrics/README.md, metrics/TRUST_SNAPSHOT.md, metrics/powerbi/**
+#   14 workflows   .github/**, workflows-src/**
 set -euo pipefail
 
 SRC="${SRC:-$HOME/acdl}"
@@ -91,6 +92,7 @@ DOMAINS=(
   "scripts|scripts"
   "tests|tests"
   "docs|docs"
+  "metrics|metrics/README.md metrics/TRUST_SNAPSHOT.md metrics/powerbi"
   "workflows|.github workflows-src"
 )