v0.8.0
Version bump in 7 places (pyproject.toml, app.py x2, __main__.py x2, tui.py, AGENTS.md). Updated README.md and README.zh-CN.md with v0.8.0 release notes. Added language switcher links and PyPI/Python/License badges.
Version bump in 7 places (pyproject.toml, app.py x2, __main__.py x2, tui.py, AGENTS.md). Updated README.md and README.zh-CN.md with v0.8.0 release notes. Added language switcher links and PyPI/Python/License badges.