Notes on ADR-0008 that the lock moved and the requirements did not

[johnnyt]

Appends a dated foot Note to ADR-0008 (the timer pin source over an optional persistence dependency). The accepted-note bullet "Consequences: both README sections name the optional edge" reads mix.lock as carrying statifier 2.7.0 and statifier_persistence 0.13.0; since 839eac8 (the parked-timer test against the real store) the lock resolves statifier_persistence 0.21.0, statifier 2.9.0 and, through statifier, predicator 9.4.2. The requirements in mix.exs did not move. The Note decides nothing and moves no Status line; the diff is additions only (zero removed lines under docs/adr/).

Review (in-turn, tier gate). Every claim in the Note checked against main at 839eac8: mix.lock resolves predicator 9.4.2 (line 25), statifier 2.9.0 (line 27) and statifier_persistence 0.21.0 (line 28), and the statifier lock entry requires predicator ~> 9.0, so predicator arrives through statifier; at eb47942 and 89adadd the lock read statifier 2.7.0 and statifier_persistence 0.13.0; 839eac8^ still reads those two, and 839eac8 changes mix.lock and one test file only. mix.exs carries {:statifier_persistence, "~> 0.13", optional: true} in defp deps (line 83) and {:statifier, "~> 2.5"} in statifier_dep/0 (line 111), unchanged since 89adadd. The Context sentences above are untouched.

Gate. Not run: the diff touches no path in gate.build_paths (docs only), so the commit row's docs-only clause applies. No changelog fragment: changelog.d/README.md excludes ADRs.

Refs: sob-ne3