feat(entry): §22.4c unreviewed/reviewed_at/reviewed_by frontmatter fields

backend/tests/test_entry_review_fields.py

@@ -0,0 +1,42 @@
+"""§22.4c — the unreviewed/reviewed_at/reviewed_by entry frontmatter fields."""
+from __future__ import annotations
+
+from app import entry as entry_mod
+
+
+def test_parse_defaults_unreviewed_false_when_absent():
+    text = "---\nslug: ohm\ntitle: OHM\nstate: active\n---\n\nBody.\n"
+    e = entry_mod.parse(text)
+    assert e.unreviewed is False
+    assert e.reviewed_at is None
+    assert e.reviewed_by is None
+
+
+def test_parse_reads_review_fields():
+    text = (
+        "---\nslug: ohm\ntitle: OHM\nstate: active\n"
+        "unreviewed: true\nreviewed_at: '2026-06-03'\nreviewed_by: ben\n---\n\nBody.\n"
+    )
+    e = entry_mod.parse(text)
+    assert e.unreviewed is True
+    assert e.reviewed_at == "2026-06-03"
+    assert e.reviewed_by == "ben"
+
+
+def test_serialize_emits_review_fields_only_when_meaningful():
+    e = entry_mod.Entry(slug="a", title="A", state="super-draft")
+    assert "unreviewed" not in entry_mod.serialize(e)
+    assert "reviewed_at" not in entry_mod.serialize(e)
+    e2 = entry_mod.Entry(slug="b", title="B", state="active", unreviewed=True)
+    assert "unreviewed: true" in entry_mod.serialize(e2)
+
+
+def test_round_trip_preserves_review_fields():
+    e = entry_mod.Entry(
+        slug="b", title="B", state="active",
+        unreviewed=False, reviewed_at="2026-06-03", reviewed_by="ben",
+    )
+    back = entry_mod.parse(entry_mod.serialize(e))
+    assert back.reviewed_at == "2026-06-03"
+    assert back.reviewed_by == "ben"
+    assert back.unreviewed is False