Pins the delayed send and cancel re-entries

[johnnyt]

Pins what the error.communication re-entry carries when the executor fails a :send_delayed or a :cancel. Refs sp-0mc0. No lib/ answer changes.

What changes

• test/statifier_persistence/executions_test.exs, in the "error re-entry (ADR-0004 decision 4)" group, gains two tests:
  • "a failed :send_delayed re-enters as error.communication carrying its sendid": the :reentered telemetry event carries the name "error.communication", the origin {:content, c_index, owner} of the failed effect, and options exactly [sendid: "due-reminder"]; the chart routes on _event.sendid, and the persisted position is the state the matching transition enters.
  • "a failed :cancel re-enters as error.communication with no sendid": the same event carries the <cancel>'s {:content, c_index, owner} origin and options exactly []; the chart's transition on the cancelled send's id is not taken, and the persisted position is the fallback's state.
  • Each test attaches its own telemetry handler under a unique execution id, because the suite is async and the handler is global.
• docs/adr/0004-run-lifecycle-executor-seam-and-serialization.md gains a dated foot Note (2026-10-11) naming the two tests: the 2026-10-04 Note's sentence that no test fails a :send_delayed or a :cancel no longer holds. Appending it was decided by the conductor under a standing consent, 2026-10-11.

No changelog fragment: tests and a record, which changelog.d/README.md lists as needing none.

Sabotage

Each check mutated reentry_origin/1 in lib/statifier_persistence/executions.ex, ran the file's tests, and restored the file byte-equal from a copy before the next:

• the :send_delayed clause re-enters with no options: red, the :send_delayed test's :reentered payload assertion;
• the :cancel clause re-enters with [sendid: send_id]: red, the :cancel test's payload assertion;
• the :send_delayed clause answers :observational: red, the :send_delayed test's payload assertion;
• the :cancel clause answers :observational: red, the :cancel test's payload assertion.

Direction check of the record text

The Note removes no line (git diff origin/main -- docs/adr/ shows 32 added, 0 removed) and is appended after the last Note at the foot. Its claims, checked: the quoted sentence is verbatim from the 2026-10-04 Note; reentry_origin/1 answers [sendid: payload.send_id] for :send_delayed and [] for :cancel on main at 47193cd, the SHA the Note cites; the group name and both test names match the test file on this branch, cited by name; the :reentered event carries name, origin and opts (execution_step_reentered/1 in lib/statifier_persistence/telemetry.ex); neither test reads the event's data, as the Note says.

Gate

Full mix quality green on this tree: every stage that ran passed, 1,432 of 1,432 tests, 96.0% coverage (Doctor, Gettext and Sobelow skipped as not installed). The Postgres the suite used is a local server on 5432.