STATE-WP-0069: meter /progress workstream_id and fix MCP task queries

Wire hub-core progress legacy-meter hook for GET /progress/?workstream_id.
MCP list_tasks, list_blocked_tasks, and list_human_interventions now call
REST with workplan_id only so internal clients do not inflate legacy usage.

api/routers/progress.py

@@ -1,13 +1,34 @@
+from fastapi import Request, Response
+from sqlalchemy.ext.asyncio import AsyncSession
+
 from api.database import get_session
 from api.models.progress_event import ProgressEvent
 from api.schemas.progress_event import ProgressEventCreate, ProgressEventRead
+from api.services.legacy_compat import meter_legacy_query_param
 from hub_core.routers.progress import create_progress_router
 
+
+async def _meter_progress_workstream_id(
+    session: AsyncSession,
+    request: Request,
+    response: Response,
+) -> None:
+    await meter_legacy_query_param(
+        session=session,
+        request=request,
+        response=response,
+        method="GET",
+        route="/progress/",
+        replacement_ref="/progress/?workplan_id=<workplan_id>",
+    )
+
+
 router = create_progress_router(
     get_session,
     progress_model=ProgressEvent,
     progress_create_schema=ProgressEventCreate,
     progress_read_schema=ProgressEventRead,
+    meter_legacy_workstream_id=_meter_progress_workstream_id,
 )
 
-__all__ = ["router"]
+__all__ = ["router"]