- refine tree and history navigation behavior
- improve scrolling continuity in the terminal UI
- keep AI worklog and prompt log updated
- validate changes with project quality checks
- add dedicated history mode UI (toggle with `h`)
- allow navigation inside history with arrows
- allow selecting history entries with Enter
- add tests for history mode behavior
- introduce AI development logs (`ai-worklog.md`, `ai-prompts.md`)
- add AI worklog policy to `instructions-agent.md`
