diff --git a/TODO.md b/TODO.md
index 7f87fa4..05a71d7 100644
--- a/TODO.md
+++ b/TODO.md
@@ -20,6 +20,14 @@ across every hour and content type in this app.
 1. **Mechanism gaps** — a real design/code piece not built yet, blocking any content pass on
    it from starting:
    - Easter's own octave — tabled, "a whole different discussion."
+   - Prime's ferial Preces (`data/propers/common/prime-preces-feriales.yml`, the older
+     pre-1911-reform "Eripe me, Domine" text) currently show on *every* ferial day
+     (`hours/prime.yml`'s `by-day-kind` split) — by explicit choice, more generous than the
+     historical rubric, which restricted this text to Advent/Lent/vigils/Ember days only.
+     Narrowing the gating to match, if ever wanted, is open, not started. Prime's Sunday/feast
+     Preces (`prime-preces-dominicales.yml`) were separately switched from Monastic's own form
+     to the secular Tridentine form (2026-08-25, keeping Benedict in the Confiteor by explicit
+     choice) — see that file's header.
    - What "a Gospel reading is its own kind" should mean structurally/in the UI, beyond the
      `isGospel` flag on a plain Matins `lesson` — open; deferred until there's a UI to
      evaluate it against.