test(opencode_review): skip posthash golden when feedback module absent

The golden-vector test references the unmerged pilot/feedback*.py module
(WIP, untracked). Without an explicit skip, main branch fails 1 test.

tests/pilot/test_opencode_review.py

@@ -698,7 +698,13 @@ def test_normalize_lens_finding_rejects_bad_inputs():
 
 def test_posthash_matches_feedback_posthash():
     # Golden vector: identical inputs must produce identical 16-char hex.
-    import feedback as fb
+    # Skipped when the unmerged feedback module isn't on the path (see
+    # pilot/feedback*.py — work in progress, not yet committed).
+    try:
+        import feedback as fb
+    except ImportError:
+        import pytest
+        pytest.skip("feedback module not present (see pilot/feedback*.py WIP)")
     cases = [
         ("a/b.ts", 12, "critical", "SQL injection via string concat"),
         ("a/b.ts", 12, "medium", "SQL injection via string concat"),