- Add explicit session termination output before lite-planex handoff to
prevent phase collision between analyze-with-file and lite-plan
- Restructure Phase 4: display conclusions summary before asking next step
- Simplify post-completion options to 3 (执行任务/产出Issue/完成),
remove redundant 导出报告 since report is always shown
- Update 01-lite-plan.md context isolation label to match new option name