Tighten hot-path backend consistency

- route SessionContext anchor CGA through algebra.backend
- move aspect-weight carry into FieldEnergyOperator.compute
- remove duplicated propagate_step threshold patch and per-step imports
- add carry_aspect_weight tests for parity, fallback, and propagation preservation
- preserve normalization, propagation, vault, Rust dispatch, and energy cadence semantics

core/physics/energy.py

@@ -87,12 +87,13 @@ class FieldEnergyOperator:
         coherence_residual: float = 0.0,
         morphology_features: Mapping[str, object] | None = None,
         anchor_adjacent: bool = False,
+        carry_aspect_weight: float = 0.0,
     ) -> EnergyProfile:
         convergence = min(log1p(max(0, convergence_density)) / log1p(8), 1.0)
         age = max(0, int(current_cycle) - int(last_activation_cycle))
         recency = min(max(0, activation_count), 8) / 8.0 * exp(-age / 12.0)
         residual = min(max(0.0, float(coherence_residual)), 1.0)
-        aspect = aspect_weight(morphology_features)
+        aspect = carry_aspect_weight if carry_aspect_weight > 0.0 else aspect_weight(morphology_features)
         raw = (0.35 * convergence) + (0.25 * recency) + (0.20 * residual) + (0.20 * aspect)
         if anchor_adjacent and raw >= 0.72:
             energy_class = EnergyClass.E4

field/propagate.py

@@ -55,38 +55,10 @@ def propagate_step(state: FieldState, V) -> FieldState:
             current_cycle=new_step,
             last_activation_cycle=ep.last_activation_cycle,
             coherence_residual=0.0,
-            morphology_features=None,   # aspect weight baked at injection; not re-read here
+            morphology_features=None,
             anchor_adjacent=ep.anchor_adjacent,
+            carry_aspect_weight=ep.aspect_weight,
         )
-        # Carry the baked aspect_weight forward: the operator won't re-derive
-        # it from morphology_features=None, so we patch the raw score to
-        # preserve the aspect contribution that was set at the gate.
-        if ep.aspect_weight > 0.0:
-            from dataclasses import replace as _replace
-            # Recompute with the original aspect weight patched back in:
-            # raw already accounts for convergence/recency/residual from above.
-            # We rebuild raw adding the aspect component the operator lost.
-            patched_raw = new_energy.raw + 0.20 * ep.aspect_weight
-            patched_raw = min(patched_raw, 1.0)
-            from core.physics.energy import EnergyClass as _EC
-            if ep.anchor_adjacent and patched_raw >= 0.72:
-                patched_class = _EC.E4
-            elif patched_raw >= 0.82:
-                patched_class = _EC.E4
-            elif patched_raw >= 0.62:
-                patched_class = _EC.E3
-            elif patched_raw >= 0.38:
-                patched_class = _EC.E2
-            elif patched_raw >= 0.16:
-                patched_class = _EC.E1
-            else:
-                patched_class = _EC.E0
-            new_energy = _replace(
-                new_energy,
-                raw=patched_raw,
-                energy_class=patched_class,
-                aspect_weight=ep.aspect_weight,
-            )
     else:
         new_energy = None
 

session/context.py

@@ -14,8 +14,8 @@ from __future__ import annotations
 
 import numpy as np
 
-from algebra.backend import versor_apply
-from algebra.cga import cga_inner, outer_product
+from algebra.backend import cga_inner, versor_apply
+from algebra.cga import outer_product
 from field.state import FieldState
 from generate.dialogue import DialogueTurn
 from generate.proposition import Proposition

tests/test_energy.py

@@ -344,6 +344,48 @@ class TestPropagateStepEnergyRecomputation:
         assert state.energy.energy_class is not EnergyClass.E4
 
 
+# ---------------------------------------------------------------------------
+# carry_aspect_weight consolidation
+# ---------------------------------------------------------------------------
+
+class TestCarryAspectWeight:
+    def test_carry_aspect_matches_morphology_derived(self):
+        """carry_aspect_weight produces identical raw/class as morphology-derived aspect."""
+        base_kw = dict(
+            convergence_density=4,
+            activation_count=4,
+            current_cycle=1,
+            last_activation_cycle=0,
+            coherence_residual=0.0,
+            anchor_adjacent=False,
+        )
+        from_morph = _op.compute(**base_kw, morphology_features={"mood": "imperative"})
+        from_carry = _op.compute(**base_kw, carry_aspect_weight=0.90)
+        assert from_carry.raw == pytest.approx(from_morph.raw)
+        assert from_carry.energy_class is from_morph.energy_class
+        assert from_carry.aspect_weight == pytest.approx(from_morph.aspect_weight)
+
+    def test_carry_zero_falls_back_to_morphology(self):
+        ep = _op.compute(
+            morphology_features={"aspect": "yiqtol"},
+            carry_aspect_weight=0.0,
+        )
+        assert ep.aspect_weight == pytest.approx(0.65)
+
+    def test_propagate_step_preserves_baked_aspect_weight(self):
+        """Aspect weight injected at the gate survives propagation via carry."""
+        ep = _op.compute(
+            convergence_density=4,
+            activation_count=2,
+            current_cycle=0,
+            morphology_features={"mood": "imperative"},
+        )
+        state = FieldState(F=_clean_versor(), node=0, step=0, energy=ep)
+        new_state = propagate_step(state, _identity_rotor())
+        assert new_state.energy.aspect_weight == pytest.approx(0.90)
+        assert new_state.energy.raw > 0.0
+
+
 # ---------------------------------------------------------------------------
 # EnergyProfile field storage round-trip on FieldState
 # ---------------------------------------------------------------------------