Align CLI output with design guide #5
Description
Summary
Refactor existing command output so every user-visible message matches docs/cli_design_guide.md for tone, density, and formatting.
Motivation
- Current outputs still include emojis and verbose text called out as anti-patterns.
- Consistent formatting reduces user friction and aligns with the documented philosophy.
Scope
- Update sess start, sess status, sess pause, sess resume, and sess projects to match the prescribed patterns.
- Ensure timestamps are relative when recent and durations use compact notation.
- Remove encouragement language and redundant headers.
- Add regression coverage where practical to guard formatting.
Out of Scope
- New command implementations (handled in other issues).
- Internationalization.
Acceptance Criteria
- Spot checks confirm outputs conform to docs/cli_design_guide.md examples.
- No emojis, heavy borders, or verbose duration strings remain.
- Tests or golden snapshots cover at least one command to prevent regressions.
References
- docs/cli_design_guide.md
- README.md (Design Principles)