[plan] Review and unify model provider interfaces

Task 8786 · Done · Plan · created · updated

_Automatically composed from the parent epic at dispatch time._

Outcome

Split by mechanism into 8 children in 2 phases: I1–I5, AC6 follow-up filing, and Antigravity ACP (depends on I3) in Unification, then a live dev check of every lane. F1–F7 are filed, not built. Acceptance is tightened per child (see report). Memory: none applied.

Artifacts

Activity

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  • Runner ended (done)