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

llm_providers/__init__.py

@@ -0,0 +1,5 @@
+# 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.

llm_providers/base.py

@@ -2,6 +2,12 @@
 Supports pluggable providers: OpenAI, Anthropic, Google, Cohere, Mistral, Ollama, OpenRouter.
 Includes referral/affiliate link tracking for revenue sharing."""
 
+# 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 logging
 from abc import ABC, abstractmethod
 from dataclasses import dataclass, field

llm_providers/providers.py

@@ -1,3 +1,8 @@
+# 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.
 """Concrete LLM provider implementations."""
 
 import logging

llm_providers/registry.py

@@ -1,3 +1,8 @@
+# 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.
 """LLM provider registry with fallback chain and cost tracking."""
 
 import json