| """Crown chakra (sahasrara) — closure / ouroboros kernel. | |
| Aggregates upstream scalar readings into a single closure ∈ [0, 1] | |
| (arithmetic mean over the numeric values supplied under | |
| `envelope.upstream`). Emits the ouroboros handoff back to `root`. | |
| """ | |
| from __future__ import annotations | |
| from typing import Any, Mapping | |
| STUBBED = False | |
| NAME = "crown" | |
| def evaluate(envelope: Mapping[str, Any]) -> dict[str, Any]: | |
| upstream = envelope.get("upstream", {}) or {} | |
| scalars = [float(v) for v in upstream.values() if isinstance(v, (int, float))] | |
| if scalars: | |
| closure = max(0.0, min(1.0, sum(scalars) / len(scalars))) | |
| else: | |
| closure = 0.0 | |
| return { | |
| "chakra": NAME, | |
| "closure": closure, | |
| "verdict": "close" if closure >= 0.5 else "spin", | |
| "n_upstream_scalars": len(scalars), | |
| "handoff": {"to": "root", "via": "ouroboros"}, | |
| } | |