Class ActivateInteractiveFormVersionAction

Promote a Pending override to Active. Flips:

• target Override: Status='Active'
• target Override's Component: Status='Active'
• prior Active sibling Override: Status='Inactive'
• prior Active sibling Component: Status='Inactive'

"Sibling" = same EntityID + (Scope, UserID, RoleID) tuple as the target Override. The target is the row identified by the input OverrideID; the priors are any rows currently Status='Active' at the same scope target.

Idempotency. If the target Override is already Active, returns SUCCESS with a no-op message. If it's Inactive, that's a misuse — we surface NOT_PENDING so the agent / UI can ask the user what they really want.

Inputs:

• OverrideID (required, string) — the Pending override to activate

Outputs:

• ComponentID — the Component now Active
• OverrideID — echoed for convenience
• PreviousActiveOverrideID — the override that was demoted (or null)