[plan] Converge every runner on one agent contract: ACP-native

Task 7191 · Done · Plan · created · updated

_Automatically composed from the parent epic at dispatch time._

Outcome

Split by architecture boundary: 17 coder children (7265–7281) in 3 phases (Foundation 9, Providers 7, Acceptance 1). Critic MAJORs resolved: sessions.runtime owned by ingest child; AC-3/8/10b/16 added to acceptance; chat/stream done-checks tightened to full, wrapped, never-truncated text.

Artifacts

Activity

  • Ready
  • Runner started
  • Runner ended (done)