Issue 012: Implement real market resolve write flow
Area: Backend
Priority: High
Files: services/api/src/handlers.rs
Problem
resolve_market endpoint is explicitly a placeholder. Admin calls to resolve markets have no effect.
Acceptance Criteria
- Endpoint executes actual resolve workflow\n- Cache invalidation follows successful writes only\n- Error handling covers all failure modes\n- Tests cover success and failure paths
Issue 012: Implement real market resolve write flow
Area: Backend
Priority: High
Files: services/api/src/handlers.rs
Problem
resolve_market endpoint is explicitly a placeholder. Admin calls to resolve markets have no effect.
Acceptance Criteria