Update codex/formulas.py

codex/formulas.py

@@ -30,4 +30,18 @@ class Formula:
         return round(score, 4)
 
 GVU_FORMULAS = {
-    "Formula_20": Formula("−τ_eff / (τ_c + 19/20) ⋅ P_standard ⋅ τ_eff ⋅ ℯ
+    "Formula_20": Formula(
+        "−τ_eff / (τ_c + 19/20) ⋅ P_standard ⋅ τ_eff ⋅ ℯ ⋅ |grad_R_O − grad_T_P| / GVU"
+    )
+}
+
+def rft_invariants(agent: dict) -> dict:
+    overlay = agent.get("collapse_overlay", {})
+    tier = agent.get("tier", "Tier_1")
+    tier_level = int(tier.split("_")[1]) if "_" in tier else 1
+    return {
+        "tau_eff": overlay.get("tau_eff", 1.0),
+        "beta_band": overlay.get("beta_band", 0.5),
+        "operator_count": len(agent.get("symbolic_operators", [])),
+        "tier_level": tier_level,
+    }