fix(of): partial-proper memorials compose proper part + ferial (match USCCB)

A memorial marked 'PROPER Gospel' (Guardian Angels, Mary Magdalene, Our Lady of
Sorrows, Joseph the Worker, the Passion of John the Baptist, Sts Martha/Mary/
Lazarus) uses the FERIAL first reading + its proper gospel; one marked 'PROPER
First Reading' (Barnabas) uses its proper first + the ferial gospel. Previously we
imported catholic-resources' *suggested* first for the gospel-proper ones, which
differs from what USCCB publishes.

- readings.go: when the observed's inline Mass has only a proper gospel (or only a
  proper first), fill the missing reading/psalm from the day's ferial and sort into
  canonical order. A fully-proper feast is untouched. Factored out ofFerial().
- gen-of-sanctoral-readings.py: keep only the strictly-proper part per the CR
  source-note.

Verified vs USCCB: Guardian Angels (2025-10-02) now = Nehemiah 8 / Ps 19 /
Matt 18:1-5,10 exactly. Updates TestUniversalSanctoralReadings.

1 files changed, 17 insertions, 10 deletions

diff --git a/internal/caldata/caldata_test.go b/internal/caldata/caldata_test.go
index 0d6616e..12aa765 100644
--- a/internal/caldata/caldata_test.go
+++ b/internal/caldata/caldata_test.go
@@ -33,13 +33,16 @@ func TestUniversalLoads(t *testing.T) {
 
 func TestUniversalSanctoralReadings(t *testing.T) {
 	l := Universal()
-	// A feast/solemnity or a PROPER-reading memorial carries its own inline Mass
-	// (imported from catholic-resources.org) rather than falling back to the ferial.
-	want := map[string][2]string{ // slug -> {reading.first substr, reading.gospel substr}
-		"barnabas-the-apostle":                  {"Acts 11", "Matthew 10:7-13"},
+	// A feast/solemnity or a PROPER-reading memorial carries its own inline Mass.
+	// Partial-proper memorials keep ONLY the strictly-proper part (the resolver
+	// fills the rest from the ferial): the Guardian Angels a proper gospel, St
+	// Barnabas a proper first reading, Our Lady of Sorrows a proper gospel.
+	want := map[string][2]string{ // slug -> {reading.first substr, reading.gospel substr; "" = absent}
 		"assumption-of-the-blessed-virgin-mary": {"Revelation 11", "Luke 1:39-56"},
-		"our-lady-of-sorrows":                   {"Hebrews 5", "John 19:25-27"},
 		"all-saints":                            {"Revelation 7", "Matthew 5:1-12"},
+		"barnabas-the-apostle":                  {"Acts 11", ""},
+		"guardian-angels":                       {"", "Matthew 18:1-5"},
+		"our-lady-of-sorrows":                   {"", "John 19:25-27"},
 	}
 	for slug, w := range want {
 		rc, ok := l.Cels[slug]
@@ -47,11 +50,15 @@ func TestUniversalSanctoralReadings(t *testing.T) {
 			t.Errorf("missing %q", slug)
 			continue
 		}
-		if got := rc.Fields["reading.first"]; !strings.Contains(got, w[0]) {
-			t.Errorf("%s: reading.first = %q, want containing %q", slug, got, w[0])
-		}
-		if got := rc.Fields["reading.gospel"]; !strings.Contains(got, w[1]) {
-			t.Errorf("%s: reading.gospel = %q, want containing %q", slug, got, w[1])
+		for i, part := range []string{"reading.first", "reading.gospel"} {
+			got := rc.Fields[part]
+			if w[i] == "" {
+				if got != "" {
+					t.Errorf("%s: %s = %q, want absent (ferial)", slug, part, got)
+				}
+			} else if !strings.Contains(got, w[i]) {
+				t.Errorf("%s: %s = %q, want containing %q", slug, part, got, w[i])
+			}
 		}
 	}
 }