feat(M3): Shared-source generator for agent variants

skills/reviewer-runtime/tests/smoke-test.sh

@@ -328,7 +328,9 @@ main() {
 
   local tmp_dir
   tmp_dir=$(mktemp -d)
-  trap "rm -rf '$tmp_dir'" EXIT
+  # Use SMOKE_TMP as a module-level var so the single-quoted trap expands lazily
+  SMOKE_TMP="$tmp_dir"
+  trap 'rm -rf "$SMOKE_TMP"' EXIT
 
   test_delayed_success "$tmp_dir"
   test_soft_timeout_continues "$tmp_dir"