Rebuild MOPC round orchestration from a round-centric model into a stage-native pipeline model that is easier to configure, more deterministic, and robust for main competition plus special awards and live finals.
## Program Constraints
- Preserve existing visual language and core UI component style.
- Complete architecture rebuild is allowed and encouraged.
- Delivery must be production-safe and verifiable.
- Release requires one atomic cutover commit after full validation.
## Hard Invariants
1. Every state transition is explicit, validated, and auditable.
2. Every override action captures `reasonCode` + `reasonText` + actor metadata.
3. No eligible project is left unassigned unless explicitly flagged as overflow with admin visibility.
4. Live active project state is admin-cursor driven.
5. Award routing behavior is explicit per award (`parallel`, `exclusive`, `post_main`).
6. Event contracts are deterministic and machine-readable.
7. At release, no runtime dependency on legacy `roundId` orchestration semantics remains.