v2.0.40

What's Changed

• feat: self-driving core — wait/resume, background subagents, monitor cadence, scheduler resilience (round-3 bring-back) by @mabry1985 in #220
• feat: platform primitives + agent hygiene — sdk, mid-turn steering, dream, user_only skills, goal-safety (round-3 Tier 2/3) by @mabry1985 in #222

Full Changelog: v2.0.39...v2.0.40