sim09 — Curvature Channel: Trace→Actor Crossing (H7)

Loaded termites deposit at convex tips; unloaded termites excavate at concavities (the Facchini/Calovi action-component split). A linear, non-saturating curvature routing replaces sim06's saturating pheromone cue. Does the accumulated structure cross from trace to self-maintaining actor? Curvature channel vs. baseline-pheromone control.
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Curvature Channel

Baseline Pheromone

Simulation Grid

Step 0

Structure over time (n_structure_cells)

curvature channel baseline pheromone crossing step (if any)

Roughness & structure stability over time

roughness (curvature channel) stability (curvature channel) stability (baseline) dashed = STAB_THRESH (0.90, crossing criterion 1)

Deposits on convex tips (criterion 3 — constraint on agents)

curvature channel: deposits_on_convex_fraction baseline: deposit_on_structure_fraction dashed = CONSTRAIN_THRESH (0.60)

Perturbation recovery (total_material / pre-damage)

curvature channel (perturbed) baseline pheromone (perturbed) perturbation step

Result table