feat(review): render walkthrough + risk_verdict + test_coverage

tests/pilot/test_ai_review.py

@@ -859,6 +859,43 @@ def test_format_review_body_with_summary_changes_and_risks():
     assert "`a.py:1`" in body
 
 
+def test_format_review_body_renders_walkthrough():
+    body = format_review_body(
+        "", "glm-5.2:cloud", "abc1234",
+        summary_changes=["adds X"],
+        risks=[],
+        walkthrough=["a.py — adds X", "b.py — refactors Y"],
+        risk_verdict="Low risk: clean.",
+        test_coverage="Tests added.",
+        findings_for_table=[],
+    )
+    assert "### Walkthrough" in body
+    assert "`a.py` — adds X" in body
+    assert "### Risk Verdict" in body
+    assert "Low risk: clean." in body
+    assert "### Test Coverage" in body
+    assert "Tests added." in body
+
+
+def test_format_review_body_omits_empty_sections():
+    body = format_review_body(
+        "", "glm-5.2:cloud", "abc1234",
+        summary_changes=["adds X"],
+        walkthrough=[], risk_verdict="", test_coverage="",
+    )
+    assert "### Walkthrough" not in body
+    assert "### Risk Verdict" not in body
+    assert "### Test Coverage" not in body
+
+
+def test_format_review_body_placeholder_when_empty():
+    body = format_review_body(
+        "", "glm-5.2:cloud", "abc1234",
+        walkthrough=[], risk_verdict="", test_coverage="",
+    )
+    assert body  # non-empty
+
+
 def test_render_collapsible_usage_contains_details():
     usage = {
         "model": "glm-5.2:cloud", "input": 1000, "output": 200, "reasoning": 0,