test(ef): oracle allow-list for the Major Litanies, and a source-fidelity correction

M5 (the pre-existing register-cited gap this task closes) had a genuine
backwards claim in its own note: it said missalemeum's single admitted
commemoration on 25 April 2027 (the Sunday-conflict year) was "the Major
Litanies". Checked directly against the raw fixture row while adjudicating
this task's own new divergence -- missalemeum's own commemorations field
there is "St. Mark"; "Pro rogationibus" (the Litanies) is the one listed
as displaced. Corrected in place, both the .sexp entry and this file's own
header note. M5 itself now covers only the ordinary case (25 April 2026):
presence agrees now that the entity is built, identity does not (colitur's
own English name vs missalemeum's Latin-ish descriptive string), the same
declared comparator limit M15/M18 already document, hit here for a
different reason.

The real, substantive divergence the correction exposes: colitur now
admits the Litanies on 2027-04-25 where missalemeum admits Mark. New entry
M20, adjudicated colitur -- RG 109(f) places the Litanies in the same
closed privileged list as (a)-(e), and RG 111(b)'s own text is
unconditional ("the II-class commemoration is dropped if a privileged one
is due", no table-order qualifier). The same mechanism already
primary-source-verified and used for other RG 109 categories elsewhere in
this codebase; honestly flagged as the first real, non-synthetic test of
this specific admit clause, consistent with this oracle's own
already-documented pattern of RG 108-111 gaps (M1, M8, M10).

M18's own count moves 395 -> 394 (2027-04-25 no longer falls into "observed-
identity-unresolved alone"; it moved into M20), traced to the specific date
and mechanism, not merely re-baselined.

data/ef/expected-divergences.sexp (the lectio allow-list) needed no
change: lectio computes no Major Litanies at all, and its own row type
carries no commemorations field -- layer 3 is entirely blind to this
change, confirmed rather than assumed.

0 files changed, 0 insertions, 0 deletions