docs(qa): 18.0 sweep anchor round 4 — studio-authoring: eleven items re-pointed to the shipped console and server (review sheet, autosave, record page on showcase_contact, draft line, Source-tab door, package-scoped matrix, plantable diagnostics row, owner-mismatch and publish-drafts doors, rule ids)

Checklist ledger only. Eleven studio-authoring items take one revision each,
every finding re-read at objectstack f89d29e and the console pin
4016370; findings that did not hold are left alone.

Claude-Session: https://claude.ai/code/session_01FM29ZqLTrnPNXxijioZwMp
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude