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_write.py

@@ -8,6 +8,7 @@ import pytest
 from activity_core import report_sinks
 from activity_core.state_hub_write import (
     IDEMPOTENCY_HEADER,
+    apply_progress_scope_fields,
     idempotency_headers,
     idempotency_key,
 )
@@ -33,6 +34,24 @@ def test_headers_carry_the_key() -> None:
     assert headers == {IDEMPOTENCY_HEADER: "run1:i:e"}
 
 
+def test_apply_progress_scope_prefers_workplan_id() -> None:
+    body: dict[str, str] = {}
+    apply_progress_scope_fields(
+        body,
+        {"workplan_id": "wp-1", "workstream_id": "ws-legacy", "topic_id": "topic-1"},
+    )
+    assert body["workplan_id"] == "wp-1"
+    assert body["workstream_id"] == "wp-1"
+    assert body["topic_id"] == "topic-1"
+
+
+def test_apply_progress_scope_dual_writes_legacy_workstream_id() -> None:
+    body: dict[str, str] = {}
+    apply_progress_scope_fields(body, {"workstream_id": "ws-1"})
+    assert body["workplan_id"] == "ws-1"
+    assert body["workstream_id"] == "ws-1"
+
+
 def test_distinct_identities_get_distinct_keys() -> None:
     assert idempotency_key("r", "i", "daily_triage") != idempotency_key(
         "r", "i", "schedule_miss"