Update support-playbook's known-issue list with the confirmed-stable metrics baseline
Refactor it to document the confirmed-stable flywheel baseline (70/71 discoverability, 25/71 MCP, 49-entry catalog, re-verified twice with zero drift) so future triage can tell known-state from genuine regression.
created 2026-07-14 03:57:51 · updated 2026-07-14 05:56:11 · owner cwc-customer-support