ADR-23: Transport Agnostic Core (probe)

record-lint cannot see a decision-shaped document filed outside the record stores

record_schema is scoped to the record stores it is configured with (decisions/adrs, intents, specs). Anything outside them is not a malformed record to the engine; it is not a record at all. So the checks that would catch a decision-shaped document never run on one filed in the wrong place.

Probe, run 2026-08-23 in a clean worktree. A file research/notes/zz-recurrence-probe.md containing:

# ADR-23: Transport Agnostic Core (probe)

## Status

Accepted (locked)

reuses an id that a real ADR already holds (adr-23), declares itself accepted, and carries no frontmatter. make record-lint exits 0 with zero findings.

This is the general form of iss-2608221457227162, which is one instance that reached the record and survived a full architecture change. That instance was plausibly excused by abcd's own genesis, since the conventions did not exist when the document was written. The probe removes that excuse: the same defect authored today, in this repo or in any abcd-managed repo, is equally invisible.

Why the id-collision half matters most: a duplicate id is objectively wrong and cheap to detect, whereas "this reads like a decision" is a judgement call. A rule that catches only the collision would have caught the known instance.