Merge pull request 'Take the backend intent slow lane and the I2 port pins (I2 WP3)' (#242) from feature/agent-stack-i2 into main

Take the backend intent slow lane and the I2 port pins (I2 WP3)

policy/architecture-baseline.json

@@ -6,6 +6,7 @@
   "backend/app backend/hostapi",
   "backend/app backend/ingest",
   "backend/app backend/intentgate",
+  "backend/app backend/intentsem",
   "backend/app backend/pgbus",
   "backend/app backend/plugins",
   "backend/app backend/profiles",

scripts/lint-boundaries.sh

@@ -84,7 +84,7 @@ done
 while IFS= read -r f; do
   grep -q '"agent-intent/' "$f" || continue
   case "$f" in
-    */deps/agent-squad/adapters/intent/*|*/modules/backend/internal/intentgate/*) ;;
+    */deps/agent-squad/adapters/intent/*|*/modules/backend/internal/intentgate/*|*/modules/backend/internal/intentsem/*) ;;
     *)
       echo "boundary: $f imports agent-intent" >&2
       fail=1