feat(errand): results summary (event choices, closest persona, headline metrics) in review

proteus/game/runtime/interactive.py

@@ -100,8 +100,32 @@ class InteractiveSession:
                     for t in trace.turns
                 ],
             }
+            if self._scenario_name == "errand_runner":
+                st["review"]["errand"] = self._errand_summary(trace)
         return st
 
+    def _errand_summary(self, trace) -> dict:
+        from proteus.game.scenarios import errand_world as w
+        m = trace.metrics
+        scen = self._scenario
+        observed = {
+            "crosswalk": "cross" if any(t.action != "stay" for t in trace.turns) else "wait",
+            "construction": "pass",          # coarse display; refined record not tracked per-turn
+            "wallet": "grab" if not scen._wallet_present else "ignore",
+            "pedestrian": "help" if scen._ped_rescued else "ignore",
+        }
+        def score(pid):
+            pol = w.PERSONAS[pid]
+            return sum(1 for k in ("wallet", "pedestrian") if pol[k] == observed[k])
+        closest = max(w.PERSONAS, key=score)
+        headline = {
+            "discovery": float(m.get("discovery_turn", 0.0)),
+            "generalizability": float(m.get("generalizability", 0.0)),
+            "coherence": float(m.get("coherence", 0.0)),
+        }
+        return {"events": observed, "closest_persona": closest,
+                "closest_label": w.PERSONA_LABELS[closest], "headline": headline}
+
     def step(self, action: str, probe_answer: str = "") -> dict:
         if self._is_done():
             raise core.SessionFinishedError("session already finished")

tests/runtime/test_errand_discovery.py

@@ -115,3 +115,15 @@ def test_full_session_runs_and_emits_discovery_metric():
     assert trace.metrics["discovery_identified"] == 100.0, (
         f"Expected 100.0 but got {trace.metrics['discovery_identified']}"
     )
+
+
+def test_review_has_errand_summary_when_done():
+    from proteus.game.runtime.interactive import InteractiveSession
+    s = InteractiveSession("errand_runner", seed=7, play_turns=2, use_default_memory=False)
+    s.step("stay"); s.step("stay")
+    rv = s.state()["review"]
+    assert rv is not None and "errand" in rv
+    es = rv["errand"]
+    assert set(es["events"]) == {"crosswalk", "construction", "wallet", "pedestrian"}
+    assert es["closest_persona"] in {"civic", "warm_outlaw", "opportunist"}
+    assert {"discovery", "generalizability", "coherence"} <= set(es["headline"])