slope-stability gate: the PROJECT'S OWN target is met for the first time — 5922 < 6026 over both sets at 193/199 with the guarantee intact (slope.ratio.derived3.project: APS 2848 + CHA 3074), CHA improves 4516 -> 2903 (x1.56), repairs 77.5% -> 55.3%. Honest cost: APS 2806 -> 2848, which moves us from 1st to 3rd on the canonical set (chandrupatla 2785, toms748 2820), so my stricter S1 fails while the project target passes — a positioning decision, recorded not resolved. Refusal CURRENCY is what decides: bracket progress 4449 vs model shape 2848, a 1601-evaluation difference for the same 'refuse before the step' idea

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

tests/test_prestep_gate.py

@@ -38,7 +38,9 @@ def test_R1_the_published_path_is_bit_identical_with_the_gate_off():
 
 def test_R2_the_gate_carries_no_chosen_constant():
     src = inspect.getsource(P.pure_root)
-    start = src.index('if prestep == "progress":')
+    # anchor on the CONDITION, not on a whole line: the line grew a `step is None and`
+    # prefix when the slope gate was inserted ahead of it, and the exact-line anchor broke
+    start = src.index('prestep == "progress"')
     end = src.index('if step is None and space ==', start)      # the gate block only
     body = src[start:end]
     # comments carry the MEASURED numbers that justify the gate (77.5 %, 2.310 halvings);