v0.7.0: fresh release for clean PyPI/proxy cache

v0.6.x wheels had corrupted proxy cache hashes. Fresh version
number ensures clean resolution for all users.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: 2 people

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "model-ledger"
-version = "0.6.1"
+version = "0.7.0"
 description = "Developer-first model inventory and governance framework for SR 11-7, EU AI Act, and NIST AI RMF compliance"
 readme = "README.md"
 requires-python = ">=3.10"