v0.7.0 - Stability & Quality Release

Version 0.7.0 Release

🎯 Stability Enhancements

• Fixed async/coroutine test hanging issues (tests now complete in ~100ms vs 30+ seconds)
• Improved test isolation with hermetic fixtures
• 32 async worker tests now passing consistently
• Comprehensive async cleanup fixtures preventing test state leakage

🔒 Security Enhancements

• Restored PR#190 security safeguards
• Integrated security regression suite into release pipeline
• Added 110+ lines of security-focused test coverage
• Enhanced workspace validation in mentor tooling

🏗️ Architecture Refactoring

• Split 1,003-line context_manager into 7 focused modules (all <700 lines)
• 100% backward compatible - no breaking changes
• Improved code maintainability and testability
• Single Responsibility Principle applied throughout

✨ Code Quality Improvements

• Applied Black formatter to all 245 files (100% compliant)
• Fixed 100+ mypy type errors
• Added 30+ Optional type annotations
• Added 15+ explicit variable type annotations
• 651/652 tests passing (99.8% success rate)

📊 Statistics

• 16 commits analyzed and documented
• 62 files changed
• 1,578 insertions(+), 1,203 deletions(-)
• 7 new modules created

📝 See CHANGELOG.md for comprehensive details