corrections: OpenTelemetry read-back adapter for the findings buffer #7564

Parent

Refs #7555. Source: PLAN Phase 0, topic poteto-review. Thread: OpenTelemetry read-back adapter for
the buffer (deferred).

Depends on

• none (parked: opens on the reopen trigger below, not on an edge)

Reopen trigger

A team adopts OpenTelemetry as a buffer source.

Outcome

When reopened: a findings-buffer adapter reads rows back from OpenTelemetry.

Decisions

• Deferred: no OpenTelemetry read-back adapter until a team adopts (D61). Origin: ours.

Key interfaces

From the design's contracts, the adapter it would implement: "append.sh < rows.jsonl: stores each
line; exit 0 only when every row is durable ... read.sh [--since <UTC ISO-8601>]: JSONL to
stdout; with --since returns at least every row with ts >= since; never truncates silently."

Done when

• The trigger has fired and is cited in a comment.
• Slices are filed under this item.

Out of scope

• The buffer contract itself, which the Findings buffer thread owns.