refactor: retire external vector deployment

scripts/compose-with-preflight.sh

@@ -114,6 +114,10 @@ if ((ssh_override && https_override)); then
 fi
 
 while IFS= read -r name; do
+  if [[ "$name" == *"_VECTOR_"* || "$name" == *"_EMBEDDING_"* || "$name" == THT_VECTOR_* ]]; then
+    echo "retired semantic source path is not supported: $name" >&2
+    exit 2
+  fi
   value="$(read_env_value "$env_file" "$name")"
   if [[ -v "$name" ]]; then
     value="${!name}"