release: Prepare v1.6.4 with updated contact information

Version 1.6.4 Changes:
- Updated author and maintainer email to [email protected]
- Added organization ruleset configurations (org-ruleset-*.json)
- Achieved 83.09% test coverage (1245/1247 tests passing)
- Documented repository protection rules

This release supersedes the blocked v1.6.3 release.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: 2 people

CHANGELOG.md

@@ -5,6 +5,16 @@ All notable changes to the Empathy Framework will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.6.4] - 2025-11-21
+
+### Changed
+- **Contact Information**: Updated author and maintainer email to [email protected]
+- **Repository Configuration**: Added organization ruleset configurations for branch and tag protection
+
+### Added
+- **Test Coverage**: Achieved 83.09% test coverage (1245 tests passed, 2 failed)
+- **Organization Rulesets**: Documented main branch and tag protection rules in JSON format
+
 ## [1.6.3] - 2025-11-21
 
 ### Added

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "empathy-framework"
-version = "1.6.3"
+version = "1.6.4"
 description = "A five-level maturity model for AI-human collaboration with anticipatory empathy"
 readme = {file = "README.md", content-type = "text/markdown"}
 requires-python = ">=3.10"