chore(license): re-license to dual MIT (core) + BSL 1.1 (stealth)

Squashed from chore/license-relicense. Full message preserved in the
original branch commit bb77eb5. See ADR-0002 for the decision rationale.

Refs: ADR-0002, commit bb77eb5

schema_extraction.py

@@ -3,6 +3,12 @@ Most modern sites (e-commerce, news, recipes, events) embed structured data
 as JSON-LD in <script type=\"application/ld+json\"> tags. Extract this directly
 instead of parsing HTML — 100x faster and more accurate."""
 
+# SPDX-License-Identifier: MIT
+# Copyright (c) 2026 Rug Munch Media LLC
+#
+# Part of Pry — https://git.rugmunch.io/RugMunchMedia/pryscraper
+# Licensed under MIT. See LICENSE.
+
 import json
 import logging
 import re