fix(of): recover season-commemorated saints + correct Irenaeus rank

Audit of the OF sanctoral vs calapi's full celebration list (2026-2028) found
saints that calapi only ever shows as 'commemoration' in a privileged season
(Lent, late Advent, the Christmas octave) were dropped by the generator, and
'first-year-wins' froze a stale rank.

- gen-sanctoral.go: map calapi 'commemoration' -> optional memorial; keep the
  HIGHEST rank per saint across an expanded 2025-2029 reference span (so a saint
  is seen at its true rank on an ordinary weekday, e.g. Polycarp as a memorial
  when Feb 23 falls in Ordinary Time).
- Recovers 15 saints: Polycarp, Perpetua & Felicity, John of God, Frances of
  Rome, Patrick, Cyril of Jerusalem, Turibius, Isidore, Vincent Ferrer, Peter
  Canisius, John of Kanty, Thomas Becket, Sylvester I, and others (197->212).
- Corrects St Irenaeus (June 28) optional -> obligatory memorial (2022 change).

Verified vs calapi per-day 2026-2028: remaining diffs are only the 3 skipped
movable memorials and name-phrasing of temporal days.

1 files changed, 42 insertions, 5 deletions

diff --git a/scripts/gen-sanctoral.go b/scripts/gen-sanctoral.go
index 6d81d66..db2e490 100644
--- a/scripts/gen-sanctoral.go
+++ b/scripts/gen-sanctoral.go
@@ -61,11 +61,32 @@ func fetchMonth(cal string, y, m int) ([]calDay, error) {
 }
 
 var (
-	rankMap     = map[string]calendar.Rank{"solemnity": calendar.RankSolemnity, "feast": calendar.RankFeast, "memorial": calendar.RankMemorial, "optional memorial": calendar.RankOptional}
+	// "commemoration" is calapi's rank for a saint reduced to a commemoration by a
+	// privileged season (Lent, late Advent, the Christmas octave). Such a saint is
+	// never the observed day, so it maps to an optional memorial for lectio; its
+	// true (higher) rank is recovered from a year where its date is an ordinary
+	// weekday (see rankBand + the highest-rank-wins merge below).
+	rankMap     = map[string]calendar.Rank{"solemnity": calendar.RankSolemnity, "feast": calendar.RankFeast, "memorial": calendar.RankMemorial, "optional memorial": calendar.RankOptional, "commemoration": calendar.RankOptional}
 	slugStripRe = regexp.MustCompile(`[^a-z0-9]+`)
 	plPrefixRe  = regexp.MustCompile(`^(?:Uroczystość|Święto|Wspomnienie(?: obowiązkowe)?)\s+`)
 )
 
+// rankBand orders OF ranks for the highest-rank-wins merge (higher = higher rank).
+func rankBand(r calendar.Rank) int {
+	switch r {
+	case calendar.RankSolemnity:
+		return 5
+	case calendar.RankFeast:
+		return 4
+	case calendar.RankMemorial:
+		return 3
+	case calendar.RankOptional:
+		return 2
+	default:
+		return 0
+	}
+}
+
 func slugify(title string) string {
 	s := strings.ToLower(title)
 	s = strings.NewReplacer("ł", "l", "æ", "ae", "é", "e", "è", "e", "ô", "o", "ç", "c").Replace(s)
@@ -121,9 +142,13 @@ func main() {
 		"the-memorial-of-the-blessed-virgin-mary-on-saturday": true, // any free Saturday
 	}
 
-	// Reference years: cover every weekday so a saint whose date is a Sunday in
-	// one year is captured in another. 2025 is past -> niedziela gives pl names.
-	for _, y := range []int{2025, 2026, 2027} {
+	// Reference years: enough spread that every fixed date falls on an ordinary
+	// weekday (not a Sunday, not inside a privileged season) in at least one year,
+	// so each saint is seen with its true rank. Start at 2025 (past -> niedziela
+	// gives pl names; also the date of a transferred feast is taken from the first
+	// year it is observed, and 2025 observes Joseph/Annunciation on their proper
+	// fixed dates).
+	for _, y := range []int{2025, 2026, 2027, 2028, 2029} {
 		for m := 1; m <= 12; m++ {
 			en, err := fetchMonth("general-en", y, m)
 			if err != nil {
@@ -167,7 +192,19 @@ func main() {
 					if slug == "" || movableSkip[slug] {
 						continue
 					}
-					if _, seen := entries[slug]; seen {
+					// Highest-rank-wins: a saint seen as a commemoration in a
+					// privileged season one year and as its full rank on an ordinary
+					// weekday another year keeps the higher rank. Date/name/pl are
+					// kept from the first (proper-date) occurrence; rank/colour/class
+					// are upgraded.
+					if cur, seen := entries[slug]; seen {
+						if rankBand(rk) > rankBand(calendar.Rank(cur.rank)) {
+							cur.rank = string(rk)
+							cur.colour = c.Colour
+							cur.class = classOf(c.Title)
+							cur.rankNum = c.RankNum
+							entries[slug] = cur
+						}
 						continue
 					}
 					laTitle := ""