feat(ef): Rogation Monday and Tuesday (RG 87)

RG 87: "Litaniae minores seu Rogationes, per se, assignantur feriis II, III et
IV ante festum Ascensionis Domini." Easter+36 and +37 are that Monday and
Tuesday. RG 128(d) gives them violet -- "for the procession and Mass of the
Greater and Lesser Litanies" -- a penitential note inside white Paschaltide.
lectio computed no Rogation days at all and showed a plain paschaltide feria.

The WEDNESDAY is deliberately not built, and the test asserts its absence.
Easter+38 is by construction the Vigil of the Ascension, II class, which wins
the day outright; what the rubric asks for there is a COMMEMORATION, and this
function returns one office per day. colitur reaches it through a movable-date
entry in its sanctoral overlay. Extending the Rogation branch to +38 to
"complete" the rubric would silently displace the Vigil, so the test pins the
Vigil rather than leaving the omission to a comment.

Rank is left as the feria's: these are IV-class days and any III-class saint
displaces them, which is what makes the office rare. In 2026 all three are
impeded and none appears; 2027 has the Monday unimpeded, and lectio and
colitur are byte-identical across 2-5 May that year.

One oracle allow-list entry: missalemeum builds no Rogation days either and
shows a white feria, so it is the outlier here rather than lectio.

0 files changed, 0 insertions, 0 deletions