Add "What All 71 Checks Means" section to Phase10_taskList.md with
every span, metric, and dashboard listed by name and check number.
Add "Current Status" section enumerating what works (11 items) and
what is not working/not implemented (7 items). Update
06-implementation-phases.md with validation inventory summary and
status. Fix stale "16 spans" reference to "17 spans".
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>