CUST-WP-0055 T05: workplan-first progress scope in sinks and resolvers

Prefer workplan_id in State Hub progress writes while dual-writing
workstream_id for wire-compat. Extend schedule_health, evidence/report
sinks, phase5 checks, k8s triage prose, and SCOPE terminology.

tests/test_state_hub_context_resolver.py

@@ -751,3 +751,5 @@ def test_phase5_stabilization_check_passes(monkeypatch) -> None:
     assert result["overall_pass"] is True
     assert result["skipped"] is False
     assert result["checks"]["totals"]["pass"] is True
+    assert result["checks"]["totals"]["workplans"] == 640
+    assert result["checks"]["totals"]["workstreams"] == 640