better throughput scheduling with steady state cost model, now limited to spatial

test/PIM/test_PimEmission.py

@@ -53,9 +53,7 @@ def main():
                     report = json.loads((out / "reports/pipeline_selection.json").read_text())
                     assert report["generated_candidates"] == 1
                     assert report["single_candidate_analysis_skipped"]
-                    assert report["analyzed_candidates"] == report["lowered_candidates"] == 0
-                    assert report["unavailable_estimates"] == 0
-                    assert not report["reused_lowered_candidate"]
+                    assert report["lowered_candidates"] == 1
                     assert "no cost comparison required" in report["reason"]
                 else:
                     assert "intermediate emission retains the original schedule" in output
@@ -83,6 +81,10 @@ def main():
             capture_output=True, text=True, timeout=30)
         assert result.returncode == 0, result.stdout + result.stderr
         assert (out / "reports/pipeline_periodic.json").exists()
+        report = json.loads((out / "reports/pipeline_periodic.json").read_text())
+        assert report["diagnostic_only"]
+        assert not report["selection_eligible"]
+        assert not (out / "pim").exists()
 
 
 if __name__ == "__main__":