Add Frontier fidelity envelope campaign

runs/frontier-phase-factorial-v0/test_phase_factorial.py

@@ -43,3 +43,20 @@ def test_kendall_tau_b() -> None:
     analysis = load("analyze_qwen30_prefill_fidelity.py")
     assert analysis.kendall_tau_b([1, 2, 3], [1, 2, 3])["kendall_tau_b"] == 1
     assert analysis.kendall_tau_b([1, 2, 3], [3, 2, 1])["kendall_tau_b"] == -1
+
+
+def test_configure_cc_command(tmp_path: Path) -> None:
+    surface = load("run_frontier_qwen30_prefill_surface.py")
+    base = ["python", "--cc_backend_config_type", "analytical", "--other", "x"]
+    analytical = surface.configure_cc_command(
+        base, backend="analytical", allreduce_csv=None, cache=tmp_path
+    )
+    assert analytical == base
+    profile = tmp_path / "all_reduce.csv"
+    profile.write_text("header\n")
+    vidur = surface.configure_cc_command(
+        base, backend="vidur", allreduce_csv=profile, cache=tmp_path / "cache"
+    )
+    assert vidur[2] == "vidur"
+    assert "--vidur_cc_backend_config_all_reduce_input_file" in vidur
+    assert str(profile) in vidur