v0.7.0-beta.1

Beta release for the TalkToMeKit refactor and CI hardening pass.\n\nHighlights:\n- Modularized CLI, server API handlers, and Python bridge internals\n- Added dedicated TTMCliTests and typed environment parsing tests\n- Added GitHub Actions CI checks for swift build/test plus explicit TTMCliTests and TTMApiTests\n- Docs and roadmap alignment updates\n\nThis is a prerelease for integration soak before stable promotion.