D2 · Release 0.2.0 (tracking)

[baokhang83]

Pillar: Product foundations (release gate)

Tracking issue: cut the 0.2.0 release once the pillar work lands.

Checklist

• Foundations: version + self upgrade, state file, check, tests/CI.
• Calibration: structured profile, engagement updates, depth policy.
• Efficiency: slice context, decision pre-filter, script/model split.
• Docs: CHANGELOG + README quickstart.
• Tag 0.2.0, bump VERSION.