Clean up pipeline composition review findings

README.md

@@ -4,6 +4,7 @@ Installs the D&D transcript-processing application suite by composing the
 standalone Seriatim, Audita, Notarius, Scriptorium, and Narratio roles. It
 supports Ubuntu 26.04 and Ansible Core 2.18 or newer. Downstream roles perform
 their own task-level privilege escalation, so a play does not need `become`.
+Supported host architectures are `amd64` and `arm64`.
 
 ## Installation
 
@@ -69,5 +70,3 @@ clean repeat. It also selects Seriatim `v1.4.0` through the suite interface,
 checks its native version output, and requires a clean repeat of that
 selection. Cleanup reapplies the baseline suite and removes only the driver's
 private temporary directory.
-
-An Ansible role to install the full D&D production pipeline (Narratio, Seriatim, Audita, Notarius, and Scriptorium, plus supporting assets).

tests/integration

@@ -7,7 +7,7 @@ test_tmp=$(mktemp -d)
 chmod 0700 "$test_tmp"
 
 export ANSIBLE_COLLECTIONS_PATH="$test_tmp/collections"
-export ANSIBLE_ROLES_PATH="$(dirname "$repository_root"):$test_tmp/roles"
+export ANSIBLE_ROLES_PATH="$test_tmp/roles:$(dirname "$repository_root")"
 
 inventory="$repository_root/tests/inventory"
 converge="$repository_root/tests/converge.yml"