Add X-StateHub-Component to fix-consistency and other State Hub REST callers for
legacy-meter attribution. Archive STATE-WP-0069; open STATE-WP-0070 for
meter-gated phase-2 retirement. Task POST bodies use workplan_id only.
Stop dual-publishing org.statehub.workstream.completed; return 410 Gone for
legacy DELETE /workstreams/{id}. Migrate fix-consistency, MCP adhoc bootstrap,
and dashboard token summary to /workplans/. Add legacy-meter evidence capture
script and pytest snapshot; update docs and close out the workplan.