fix: honor configured rework routing

[Shooksie]

Summary

• load configured on_verdict routing when completing persisted workflow phases
• add a builder to inject verdict routing into the lifecycle executor
• add a regression test for qa-review -> implement rework routing in the file-backed workflow service

Verification

• cargo test -p orchestrator-core file_hub_complete_phase_with_decision_honors_rework_routing -- --nocapture
• cargo test -p orchestrator-core on_verdict_rework_routes_to_configured_phase -- --nocapture