test: GST-986 classify .gstack/tmp/targeted.json as a /ship producer (gstack-clean, from the main merge)

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

test/gstack-clean-producers.test.ts

@@ -36,6 +36,7 @@ const KEPT: Record<string, string> = {
   'ship-gate.json': '/ship handoff gate record',
   'issues.json': '/ship issue links',
   'docs-audit.json': '/ship documentation audit record',
+  'targeted.json': '/ship Step 11 targeted reader record (gstack-review-dispatch verify --targeted-out)',
   'tree-receipt.json': 'gstack-tree-receipt output',
   'base-red.json': '/ship base-red record',
   'review-*': '/ship review loop records',