diff --git a/tests/fixtures/incidents/bad/no-workstream-seq-names-in-config.toml b/tests/fixtures/incidents/bad/no-workstream-seq-names-in-config.toml
new file mode 100644
index 00000000..2de79fb0
--- /dev/null
+++ b/tests/fixtures/incidents/bad/no-workstream-seq-names-in-config.toml
@@ -0,0 +1,3 @@
+# WP-08 incident-eval fixture (synthetic test data). Reproduces PR #216 (no-workstream-seq-names-in-config).
+# 次 PR (PR-3) で `[features].enabled` allow-list 方式に移行予定
+enabled = true
diff --git a/tests/fixtures/incidents/good/no-workstream-seq-names-in-config.toml b/tests/fixtures/incidents/good/no-workstream-seq-names-in-config.toml
new file mode 100644
index 00000000..f01f797a
--- /dev/null
+++ b/tests/fixtures/incidents/good/no-workstream-seq-names-in-config.toml
@@ -0,0 +1,3 @@
+# WP-08 incident-eval fixture (synthetic test data). Clean counterpart for no-workstream-seq-names-in-config (must NOT fire).
+# 由来: PR #216、将来的に `[features].enabled` allow-list 方式への移行を検討中
+enabled = true