Why: Build the application without requiring adjacent Core or UI source checkouts.
Evidence: SELF full frontend tests, isolated no-sibling package consumption, design guards and production build are recorded in the Dev dependency-workspace task card.
Impact: Pin exact provider Git revisions and package exports; preserve component behavior, visual tokens and third-party versions.
Refs: Versioned dependencies U4; Core f32d431; UI 468776e; feature/dependency-workspace
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