[F14] Startup Orchestration

[cjpillsbury]

End-to-end startup flow: load → parse → select → fetch → play.

Acceptance Criteria

• Coordinate all startup steps
• Handle startup errors
• Optimize startup latency
• Integration tests for complete flow
• Unit tests with ≥80% coverage

Dependencies

Depends on: #419 (F1), #420 (F2), #421 (F3), #422 (F4), #423 (F5)

Technical Notes

Files: packages/spf/src/core/features/startup-orchestration.ts
Brings everything together.

Bundle Size Impact

Target: <2KB