Python: Harness console for python (#6312)
* Add initial harness console for python
* Add textual to project
* Add planning and approval flows with list selector
* Address PR comments
* Fix list selection bug
* Fix PR #6312 round 2 review comments
- Escape untrusted agent text with rich.markup.escape() in observers
(text_output, planning_output, reasoning_display) to prevent markup injection
- Remove non-functional 'Always approve' choices from tool_approval.py
(framework lacks CreateAlwaysApproveToolResponse support)
- Remove textual from root pyproject.toml dev deps (sample-specific)
- Add PEP 723 inline script metadata to harness_research.py
- Narrow except Exception to except NoMatches in list_selection.py
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Fix build error
* Fix build errors
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
westey