colitur.git/test/test_lms_ordo.ml, branch v1.1.0

feat(ordo): wire the LMS preface column into the witness suite

2026-08-23T21:01:42Z

Extends tools/extract_lms_ordo.ml's row type with a praef field (the first "Pr of ..." / "Common Pr" match in each day's universal block, same first-in-reading-order discipline already used for Gl/Cr) and regenerates all three LMS fixtures. Also brings lms-ordo-2024-2025.sexp under the generalised, probe-verified provenance template the Witnesses task previously added only for the two newer editions -- it had kept Task 6's original hand-written header. Characterisation finding: this Ordo prints OPTION LISTS ("Pr of X or Pr of Y or Common Pr"), not a single value per day, and several named options (Martyrs, All Saints and Patron Saints, the Dedication of a Church, the Most Holy Sacrament, St John the Baptist, the Angels) are genuinely absent from RG 484-497's own fourteen named prefaces. Every instance found in the universal block pairs such an extra with a genuine RG-482 answer, so test/test_lms_ordo.ml compares by membership (classify_praef_options, a 15-entry prefix table split on the standalone token "or"), not string equality. Opposite-prediction probes (Nativity/Apostles/Requiem) are hard- verified inside the extractor itself before any fixture is trusted, the same discipline already used for the Creed column. Result: 396/396, 399/399, 398/398 comparable rows agree across the three editions (Good Friday excluded per edition, no Mass that day), zero allow-list entries needed. extraordinaryform.org's own three editions were characterised but deliberately not wired in this pass -- see .superpowers/sdd/2026-08-21-colitur-celebrant-rubrics-phase1/preface-witnesses-report.md for the full account (the field is genuinely per-day, contrary to a naive header-count read, but carries its own classification anomaly during Advent and reconfirms the corpus's known St Lawrence vigil defect, and building a full extractor for it is a separate, comparably large task not needed to decide the RG 497 question this same report settles). Claude-Session: https://claude.ai/code/session_017ZBxCCRM2ojnBupp3SBxV9

fix(ef): ferias after the Ascension repeat its own Mass, not a Sunday's

2026-08-22T18:55:18Z

Ascension has no octave under the 1960 rubrics -- confirmed structurally: the Proprium de Tempore's own table of contents runs straight from "In Ascensione Domini" to "Dominica post Ascensionem" with no per-feria headings in between. Step 3 of the reading chain therefore fell through to Preceding_sunday on every unoccupied weekday in that stretch, walking each one back to the 5th or 6th Sunday after Easter's own citation. The Missal's own Proprium de Tempore carries an explicit marginal rubric immediately after the Ascension's Mass propers, before "Dominica post Ascensionem" begins: "Diebus a feria VI post Ascensionem usque ad feriam VI ante vigiliam Pentecostes inclusive, dicitur Missa de festo Ascensionis, cum Gloria et praefatione de Ascensione, sine Credo et Communicantes proprio" -- every feria without its own proper, from the Friday after the Ascension through the Friday before the Vigil of Pentecost, repeats the Ascension's own Mass. RG 490(b) corroborates independently: it assigns the Ascension preface "tamquam de Tempore" across that identical window, which only makes sense if the Mass actually repeated there is the Ascension's, not a numbered Sunday's (whose own Mass would carry no need for a preface override at all). Witnessed directly, not only inferred from the rubric: the LMS Ordo prints "Mass of the Ascension" literally on every affected day across all three of its fixture windows, in BOTH the tail of Ascension's own week and the following week -- ruling out the alternative reading (that the second week instead resumes "Dominica post Ascensionem"'s own Mass, which a first pass over the FIUV Ordo's own week-labelled titles could suggest at a glance; its own [praef] field for the same two dates independently reads "Ascensionis", resolving the apparent conflict). Implemented as data, not logic, matching this codebase's own established precedent for the identical RG 299 shape (the week after Trinity Sunday, data/ef/lectionary.sexp's [trinity_week_entries]): six new hand-authored entries, [ascension_week_entries] in tools/bootstrap_lectionary.ml, regenerated against a git-pinned copy of lectio's own source ini (SHA-256 verified unchanged) so the regeneration carries no unrelated drift. The window's two Saturdays are deliberately excluded -- RG 78's votive Office of Our Lady on Saturday always wins an otherwise-unoccupied Class4 Saturday first, before step 2 (this fix's own entry point) is ever reached, so an entry for either slug would be dead data. Blast radius measured in-process across the full 1583-9999 domain (throwaway probe, not committed): 16 350 days total across the six slugs, every one resolved via step 2 (Own_slug), zero anomalies, and the window's two Saturdays confirmed to contribute zero hits via this cause across the whole domain, corroborating the RG78-interception reasoning by direct sweep. Closed L2 in data/ef/expected-divergences-lms.sexp. New cited entries: C41 in data/ef/expected-divergences.sexp (95 of 16801 rows, 2005-2050 -- lectio has no equivalent rubric and still walks these ferias back); M31 in data/ef/expected-divergences-missalemeum.sexp (3 rows in the 2026-2027 window, plus the same shape independently reconfirmed in the 2035 and 2038 live-capture windows) -- missalemeum, Divinum Officium's lineage, still gives the same wrong answer colitur itself used to give, which is why these rows used to agree with M18's shape and now escape it (M18 373 -> 370, the same mechanism M23-M27 established when the citation axis was first built). Golden pin: 2031-05-23, the exact date the bug report was filed against. Mutation-tested: reverting data/ef/lectionary.sexp alone (a git-diff capture/restore, not a source-code revert, since the fix is data) reddens 19 tests across the differential, both oracle fixtures, all three LMS Ordo windows, the golden pin, the lectionary unit test and every Render golden template; restored and reconfirmed green (681 tests; 683 under COLITUR_EXHAUSTIVE_SWEEP=1, ~175s).

fix(ef): Rogation Monday/Tuesday are white, not violet (RG 119)

2026-08-22T18:15:56Z

Temporal_ef.temporal's Rogation Monday/Tuesday branch hardcoded Colour.Violet with no citation (data/ef/expected-divergences-lms.sexp's L6, surfaced by the LMS Ordo). RG 119 assigns white to the de-Tempore Office and Mass from the Paschal Vigil Mass to the Pentecost Vigil Mass exclusive; Easter+36/+37 sit inside that window. RG 128's own exhaustive four-case violet list never names Rogation days, and its vigil clause (d) is doubly inapplicable: these are not vigils, and they are inside Paschaltide, not outside it. RG 88 explains the violet actually seen in print sources: "de Litaniis minoribus nihil fit in Officio, sed tantum in Missa" -- the violet belongs to the Rogation Mass/procession, a distinct votive text this engine does not model, not to the day's own Office. Witnessed directly: LMS Ordo 2023-2024, 2024-05-06, "FERIA IV Cl W" with "Gl", the Office and Mass printed separately from the optional violet votive Mass of the Rogations. Cascade verified, not assumed: RG 432(b) omits the Gloria on every violet Mass, so the wrong colour was also silencing the Gloria on these two weekdays even though RG 237(e) (Breviary, ordinary Paschaltide ferias say Te Deum) already made it true underneath. White removes the 432(b) block, and the Gloria now follows Te Deum via 431(a), matching the Ordo's own "Gl" -- confirmed with dedicated golden pins in both test_golden.ml (colour) and test_rubrics_ef.ml (the Gloria flip), 2028-05-22/23 (neither day impeded that year). Closed L6 in data/ef/expected-divergences-lms.sexp. Reopened C8 in data/ef/expected-divergences.sexp (26 of 16801 rows, 2005-2050): lectio independently computes these two days violet too, so the two engines used to agree by sharing the same uncited assumption; colitur's colour is now correct and lectio's is not, so the comparator disagrees again, for the opposite reason. While reopening C8, found and corrected a genuine misattribution in its own prior closure note, which claimed lectio's violet was "RG 128(d)" -- 128(d) governs vigils outside Paschaltide and has nothing to do with Rogation days. Checked docs/research/rules-register.md for the same claim: not present there, but a related conflation was found and corrected at its O'Connell section 4(d) note, which had used a Rogation MASS/procession citation to "confirm" the day's own OFFICE colour. Blast radius measured in-process across the full 1583-9999 domain (throwaway probe, not committed): 4722 days total (2368 Rogation Mondays + 2354 Rogation Tuesdays actually observed outright, i.e. not impeded by a stronger sanctoral feast that year), all Violet->White, all with the Gloria flipping false->true alongside, zero anomalies. Mutation-tested: reverting the branch to Colour.Violet reddens 16 tests across Rubrics_ef, the lectio differential, the LMS Ordo suite and both golden pin files; restored and reconfirmed green (680 tests).

fix(ordo): correct L5/F3 misadjudication -- Cum Sanctissima, not a gap

2026-08-22T16:46:27Z

data/ef/expected-divergences-lms.sexp's L5 (16 dates, LMS Ordo Gloria=true vs colitur's false) and data/ef/expected-divergences-fiuv.sexp's F3 (6 dates, FIUV Te Deum=true vs colitur's false) were both misadjudicated as colitur's own gap under an RG 302(b)/431(b) hypothesis. Both are wrong. These are occurrence differences from the 2020 decree Cum Sanctissima, which colitur excludes from its 1962 core by binding design (CLAUDE.md decision 2). RG 303(b) ("dici potest tantum si occurrit dies liturgicus IV classis") already prohibits 302(b) on the Class3 privileged ferias both entries cover -- the original text quoted 303(b) but never followed it to its conclusion. Decisively, the FIUV Ordo prints BOTH readings on the six shared dates, separated by a literal "-VEL-" token: the primary, strict- 1962 reading (feria wins, sine Gloria, no Te Deum) matches colitur exactly; the second, Cum-Sanctissima reading (saint kept, Gloria, Te Deum) matches the LMS Ordo exactly. F3 itself was never a real Te Deum finding: tools/extract_fiuv_ordo.ml's extract_te_deum scanned each block unbounded for "Ad Mat.", so on these six days -- whose primary office states no "Ad Mat." of its own -- it silently read the second office's own Te Deum instead. Fixed with a new split_at_alt_office, cutting every block at "-VEL-" before any field extraction runs; the alternative is captured, not discarded, in a new alt_te_deum field. A hard characterisation probe asserts the split fires on exactly the six known dates. Auditing for the same trap elsewhere (this is the third such manufactured divergence in this project) found a related but narrower marker, "Vel (sec. decretum <>) Missa ...", offering an alternate Mass formulary within a single office. It never corrupted Gloria/Credo (always stated before the marker on all 20 real instances, confirmed by diff), only the uncompared praef field; hardened defensively anyway, before it could ever fire live. The LMS Ordo (all three editions) carries no equivalent dual-print mechanism at all. expected-divergences-missalemeum.sexp's M27 is the same genus but was already correctly adjudicated, not touched. Both allow-list entries are rewritten, not deleted: the original SHAPE/ CITATION/WHY-NOT-FIXED-HERE reasoning is preserved verbatim as a recorded, superseded hypothesis, matching this project's own correction convention. test_lms_ordo.ml's matching predicate is unchanged (the 16-date population still fires, and always will, because it reflects a standing exclusion, not a bug); only its citation comment is corrected. test_fiuv_ordo.ml's F3-specific predicate/count assertion is removed, matching this file's own prior F2/F4 closure discipline. lib/ is untouched. dune test: 676/676. make check (COLITUR_EXHAUSTIVE_SWEEP=1, full 1583-9999 domain): 678/678.

feat(ef): the Gloria in excelsis, RG 431-432, deferring to Breviary 237-238

2026-08-22T15:56:42Z

Phase 2 of celebrant-rubrics-phase1: colitur rubrics gains a fifth column, whether the Gloria is said. Follows the Creed's own seam exactly -- Rite.t.gloria, Liturgical_day.t.gloria, wired through calendar.ml the same way. RG 431(a)/432(a) defer the Gloria to the Breviary's own Te Deum rule (nn. 237-238), so te_deum is implemented as its own named predicate, cited clause by clause, not collapsed into a colour heuristic. 431(c) (Holy Thursday, the Easter Vigil Mass) and 432(b)/(d) (violet; a Requiem) are independent overrides checked ahead of the Te Deum-derived answer. Every clause this engine has no dimension to model (votive Mass classes, the wider n.302 "Missa festiva" categories) is stated as N/A with its own reasoning, not silently dropped. Validated against the FIUV universal Ordo (Gloria and Te Deum) and all three LMS editions (Gloria). A first pass over-trusted a clean-looking 15-for-15 FIUV contradiction of 237(b)'s own Septuagesima exception and replaced it with a blanket "every Sunday" rule; the evidence was itself corrupted -- the FIUV extractor recognised only one of the source's two Te Deum negations ("non dicitur", not "sine"), so every "sine Te Deum" Sunday read wrongly true. Fixed in tools/extract_fiuv_ordo.ml, fixture re-extracted, and the literal 237(b) reading restored once the corrected data confirmed it. A second bug surfaced alongside it (Palm/ Passion Sunday wrongly reading true via Temporal_ef.named's own table membership, then Christ the King wrongly reading false from an over-broad fix) is closed with an explicit two-slug exclusion. Domain-wide 1583-9999: every violet or Rose day is gloria=false except the Easter Vigil (RG 431(c) lex specialis), every Requiem is gloria=false, both measured exhaustively, zero exceptions. Mutation- proved: disabling 431(c) reddens 8 tests including all four oracle comparisons; disabling 238(c)'s feria-I-classis exclusion reddens exactly the dedicated Ash Wednesday unit test, a genuine blind spot in both oracle layers, reported rather than hidden. Two open, cited findings, neither fixed here (out of this task's "follow creed's exact seam" scope): a privileged Lenten/Passiontide feria carrying one commemoration reads Gloria=true in the LMS Ordo but Te-Deum=true/Gloria=false in FIUV -- the two oracles disagree with each other, not merely with colitur (data/ef/expected-divergences-lms.sexp L5, expected-divergences-fiuv.sexp F3); and a pre-existing, uncited Colour.Violet bug on Rogation Monday/Tuesday in Temporal_ef.temporal, surfaced by this comparison but root-caused as a separate defect (L6). day/readings verified byte-identical against a build from the branch tip before this task (v0.10.1's own tag predates an already-landed bissextile fix that legitimately changed both, so it is not the right baseline). 671 tests green (dune test); 678 with the exhaustive sweep (COLITUR_EXHAUSTIVE_SWEEP=1 dune test --force, ~104s).

feat(ef): implement the calendarium's bissextile February shift

2026-08-22T14:40:24Z

The Missale Romanum's calendarium footnote for February (LT.txt:5011-5014, scan-corroborated scan2.txt:3050-3058): in a leap year the sixth kalends of March (24 February) is doubled rather than a 29th day appended, so St Matthias moves 24->25 February and St Gabriel of Our Lady of Sorrows 27->28, with 24 February itself carrying no fixed office that year. data/ef/expected-divergences-lms.sexp entry L3 tracked this as an open gap. Implemented as the rubric's own general mechanism (every fixed entry from 24 through 28 February shifts one civil day later in a leap year), not as "move these two named saints": the two readings are indistinguishable on shipped data (nothing else is fixed in that window) and diverge only for a future --overlay entry in the same range, which the mechanism reading covers correctly and a two-saints special case would not. This project has already been bitten once (RG 16(a)) by a rule implemented against shipped data's coincidental shape rather than the rubric itself. Kernel stays rite-agnostic: Rite.t gains a fixed_key field (Date.t -> (int * int) option), the same seam easter already establishes, read only by Layer.on_date's FIXED half -- the movable half (Easter_offset/Nth_weekday) is untouched. Default is the identity mapping, an optional argument on on_date, so every existing caller and every rite that supplies nothing is byte-identical to before this field existed. Date.is_leap is exposed in date.mli (already existed in date.ml) so the rite reads the kernel's own single-sourced leap-year definition. The EF implementation lives in Rite_ef.Temporal_ef.bissextile_fixed_key, fully cited, wired into Rite_ef.context. Blast radius, measured over the full 1583-9999 domain (Calendar.year run twice per civil year, real fixed_key vs identity, every day diffed): all 2,041 leap years in the domain show a visible change for each saint; 6,983 individual liturgical days change total, zero unclassified, across four shapes (Matthias vacates 24 Feb in 1,803 years / occupies 25 Feb in 1,811; Gabriel vacates 27 Feb in 1,699 / occupies 28 Feb in 1,670). L3's own prior estimate (1,650 years, observed-outright only) is confirmed close on the same definition (1,677 measured); the broader observed-or- commemorated count is higher, not lower, showing the narrow estimate undercounted visible impact rather than overcounting it. The lectio differential (2005-2050 fixture) gains a new cited entry, C40 in data/ef/expected-divergences.sexp: lectio implements no such shift, so every leap year in its window now diverges on the two shifted days (21 rows, not the naive 44 -- the comparator never compares commemorations, so a side where the shifted saint has zero comparator-visible footprint on both engines produces no row). The LMS Ordo's 2023-2024 fixture -- the window L3 was originally found in -- now matches on the Creed comparison; its formulary-override bucket count is corrected 182->181 (24 February leaves the counted Proper population, becoming Own_slug-sourced). The missalemeum oracle fixtures (2026-2027, 2038, 2035) cover no leap year and are unaffected. L3 is closed: converted from an active allow-list record to a prose closure paragraph (L1's own precedent), citation preserved verbatim, fix and measured blast radius recorded. The id-list assertion narrows to [L4] alone, and the now-dead "2024-02-24" -> "L3" date mapping is removed. Six golden values pinned across four new test cases: Matthias in a leap year (both the vacated and occupied sides) and a common-year control; Gabriel likewise, deliberately choosing a leap year where he is admitted only as an ordinary commemoration rather than winning outright, a different shape from Matthias's. Mutation-tested: forcing fixed_key back to identity reddens exactly five test cases -- the differential's Layer C count-pin (C40 drops to 0 actual vs 21 expected), the LMS Ordo's Creed and formulary-bucket checks, and both new golden pins -- confirming the tests actually exercise the fix. Reverted; dune test, the exhaustive sweep, and make check are all green.

test(lms-ordo): extend the LMS witness layer from one year to three

2026-08-22T12:51:07Z

Generalises tools/extract_lms_ordo.ml's start-of-body detection: the hardcoded "End of November 2024" sentinel assumed every edition opens with an "End of November" stub section. The 2023-2024 edition has none (Advent Sunday 2023 fell on 3 December, so the compiler folded the two tail days into the "December 2023" header directly) -- the generalised detector anchors on the body's own "ORDO" title line instead, verified unique in all three known editions and distinct from the Table of Contents' lowercase "Ordo" entries. Extracts test/fixtures/lms-ordo-2023-2024.sexp (397 rows) and lms-ordo-2025-2026.sexp (399 rows), each with a provenance header carrying its own SHA-256, source citation, and a per-edition characterisation record: five opposite-prediction Creed probes, independently re-verified against this run's own extracted rows (a failed probe is now a hard die, not a printed claim). The 2025-2026 edition needed a different sharp II-class pairing than 2024-2025's Joachim/Stephen one, because Joachim (16 August) is impeded by a Sunday that year -- recorded in the fixture header, not silently swapped. test/test_lms_ordo.ml is refactored into a parameterised make_suite, instantiated once per edition; every count Task 6 hardcoded against the single 2024-2025 window is now a per-edition parameter, several of which turned out to differ once measured (BVM-Saturday population 12/14/13, Ascension-week exclusion 1/3/2). Two mapping gaps surfaced only by the new windows and fixed here (test-side, not colitur): Low Sunday reached via Preceding_sunday for the first time (absent from 2024-2025's own window), and the Ascension-week exclusion was wrongly keyed off week number alone -- Rogation Monday also resumes week 6's Sunday but falls BEFORE Ascension, not after, and the Ordo prints the ordinary Sunday text there. Re-bounded by date, against Ascension and Pentecost. Two genuine divergences surfaced in the 2023-2024 window and are allow-listed (L3, L4) rather than fixed, per this task's no-lib-changes scope: - L3 (verdict ordo): colitur has no bissextile calendar rule. The 1962 Missal's own calendarium moves St Matthias from 24 to 25 February in leap years (docs/research/LT.txt:5011); colitur keeps him on the 24th every year. Domain-wide upper bound measured with a throwaway sweep: 1,650 of 2,041 leap years in 1583-9999 currently observe him there. - L4 (verdict open): Christmas Eve falling on the 4th Sunday of Advent (2023-12-24, roughly 1 year in 7). colitur says the Creed is said, reading RG 475(a)'s Sunday clause; the Ordo says it is not. RG 30(a)'s own "locum tenet ... nulla fit commemoratio" for this exact vigil reads like RG 16(a)'s Feast-of-the-Lord-on-Sunday shape, which colitur already treats as Creed-preserving -- but RG 475(a) names "festo" specifically, and a vigil is its own liturgical-day category (RG 35), so the counter-reading is real too. Left open rather than adjudicated. All 630 tests green (dune test), 631 with the exhaustive sweep. Claude-Session: https://claude.ai/code/session_017ZBxCCRM2ojnBupp3SBxV9

fix(kernel): Mass_formulary.t.said is honestly optional -- was false for Votive

2026-08-22T11:48:08Z

The .mli promised said is "the slug whose Mass is said". For Votive (RG 78/309(a), the Saturday votive Mass of Our Lady) it was set to the day's own ferial slug -- whose Mass is exactly the one NOT said. A consumer joining rubrics to readings on that slug would silently get the wrong Mass: 2026-01-03 reports ef-christmas-1-saturday, which has zero entries in data/ef/lectionary.sexp, because the citations actually come from bvm_saturday_citations, a season-keyed function with no slug of its own anywhere in the shipped data. Chose the type-honest fix over the interim documentation one: said is now Slug.t option, None exactly for Votive, because there is genuinely no slug in the shipped data this field could report for that one source. Adding real ids for the five seasonal BVM Masses (the reviewer's first option) is out of scope -- a data restructuring this round explicitly does not carry. Threading the office slug through a second field was considered and rejected as redundant: the day's own office is already available on the same Liturgical_day.t via observed.slug, which every caller already has in scope regardless of via, so said does not need to duplicate it. colitur rubrics stays byte-identical: rubrics_line already has d.observed in scope and falls back to its slug when said is None, printing the exact value it always printed for a Votive row (verified directly, diffed against pre-fix output across four years). colitur day/readings are unaffected (neither reads Mass_formulary at all). colitur emit --format sexp's pretty-printed line count for 2027 moved 9011 -> 9025: every day's formulary record widened by said's own extra option wrapping, and to_string_hum wraps by column width. Cosmetic only, diffed line by line to confirm every change is this shape or a consequent wrap shift; recorded in test/cli.t alongside the 476(f) note it now sits next to.

test(ef): compare the LMS Ordo's formulary override STRING, not just presence

2026-08-22T11:38:53Z

test_lms_ordo.ml's formulary-override check only asked WHETHER a Preceding_sunday day showed a "Mass of ..." override line, never WHICH Sunday it named. colitur could have resumed the wrong Sunday on all 66 such days and this layer would have stayed green -- resuming the right Sunday is precisely what step 3 of the reading chain exists to do. test_formulary_override_matches now derives the Ordo's own expected prose from Mass_formulary.t.said's own resolved slug (parsed directly, no Str/regex) and compares it against the Ordo's real text. Two narrow, evidenced exceptions, both counted rather than silently absorbed: - Christ the King's own Sunday reaches this population under a NAMED slug (ef-christ-the-king) that carries no embedded ordinal; its position among the Sundays after Pentecost varies by year, so Temporal_ef.week is read for that one slug specifically, not called generically (an earlier version of this fix read [week] for every day and was wrong -- caught by its own assertion on the very first run, because Time_after_pentecost's own last-Sunday and surplus-Sunday renumbering diverge from the raw week count. Reading the number back out of the already-resolved slug sidesteps both special cases and is not tautological with the wrong-Sunday failure mode this fix exists to catch). - Three real days between Ascension and the following Sunday (2025-05-30, 2025-06-02, 2025-06-03) are a genuine, newly-found defect: colitur resumes the nearest calendar Sunday, but the Missal, and the Ordo, keep saying Ascension's own Mass through this stretch instead. Structural (Ascension is a fixed Easter+39), not a fixture artefact, and not fixed here -- it needs a lectionary-data change out of this fix round's own scope. Documented in expected-divergences-lms.sexp as a prose-only note (no active sexp record: this file's id-lookup machinery is scoped to the Creed axis, and a second axis reusing it would let one test's "declared but never fired" check spuriously trip on the other's entry) and enforced directly by this test's own count assertion instead. Mutation-proved: offsetting step 3's Sunday lookup by an extra 7 days reddens this test (23 failures total across the suite: layers 3-6, golden pins, and lectionary_ef's own unit tests), confirmed via the compiled test binary directly; reverted clean, full suite green again.

test(ef): the LMS Ordo as a sixth validation layer

2026-08-22T10:58:15Z

An independent lineage -- neither Divinum Officium, missalemeum nor lectio -- covering the Mass formulary and the Creed. Characterised before use, per the discipline the extraordinaryform.org Ordo's blanket St Lawrence vigil gap taught this session: five opposite- prediction Creed probes (Sunday/feria, octave-override vs plain II-class, I-class) all confirmed against the raw extracted text before a single divergence was adjudicated, recorded in the fixture's own provenance header. tools/extract_lms_ordo.ml hand-parses pdftotext -layout output (no Str/regex, frozen deps) into test/fixtures/lms-ordo-2024-2025.sexp, 400 day-rows (2024-11-27..2025-12-31). Gl/Cr print per Mass-option, not per day; the extractor takes the first pair in reading order, which the source's own layout guarantees is the universal entry's, since a diocesan variant always follows it, never precedes it. The Ordo's I-V roman numeral ("Missae de sancta Maria in sabbato", RG 309(a)) is matched whole-line only, never by substring -- "V Mass of BVM" is a substring of "IV Mass of BVM". test/test_lms_ordo.ml compares two axes 1:1 by date: - the Creed (RG 475-476): 399 of 400 days comparable (Good Friday has no Mass at all, asserted as the only such day); one genuine divergence, adjudicated to the ORDO, not colitur -- All Souls' Day 2025-11-03 is a Requiem Mass, and colitur's own creed predicate has no notion of one, a pre-existing scope gap rubrics_ef.ml already documented in its own header before this task existed. - the BVM-Saturday seasonal Mass selection, the addendum's own "sharper check": all 14 Votive days in the window match their season's own numeral exactly, both directions, independently re-derived from RG 309(a) rather than calling colitur's private function. - the formulary override, for the three sources it can honestly discriminate (Proper 179, Preceding_sunday 66, Common 2, all clean); Own_slug (139) is excluded with evidence, not silently -- several ferial slugs carry citations byte-identical to their Sunday's own, so the Ordo's override line cannot distinguish the two representations. data/ef/expected-divergences-lms.sexp carries the one adjudicated entry (L1), cited to RG 476(f). Mutation-tested: inverting RG 475(a)'s Sunday clause reddens 10 existing Rubrics_ef unit tests AND this new layer's own comparator, independently, on a data source none of the other five layers touch. Reverted after confirming. No lib/ changes. day/readings/rubrics output re-confirmed byte- identical (1583, 2026, 2038, 9999) after this task; all three gates green (dune test, exhaustive sweep, make check).