Collapse consecutive bible-plan chapters into a citation range

Multi-chapter readings (e.g. Job 34-37, authored as one YAML entry per
chapter) were rendering as "Job 34; Job 35; Job 36; Job 37" instead of
the compact "Job 34-37". Verse-qualified and non-consecutive citations
are unaffected.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AGjUyhUZJaSjiniEmnLdak

tests/hours/matins.test.ts

@@ -85,7 +85,7 @@ describe('resolveOrdo("matins", ...) ferial (1-nocturn) branch', () => {
     // commemorated saint here) — see the next test for the 3-reading case.
     expect(lessons).toHaveLength(2);
     const citations = lessons.map((l) => (l as { text: { citation?: { en?: string } } }).text.citation?.en);
-    expect(citations).toEqual(['Isa 6; Isa 7', 'Sap 2']);
+    expect(citations).toEqual(['Isa 6-7', 'Sap 2']);
     // The Vulgate/Douay-Rheims bulk import (2026-09-03) landed the real
     // text for these passages.
     expect((lessons[0] as { text: { status: { en?: string } } }).text.status.en).toBe('verified');
@@ -105,7 +105,7 @@ describe('resolveOrdo("matins", ...) ferial (1-nocturn) branch', () => {
     const lessons = commemoratedOrdo.parts.filter((p) => p.kind === 'lesson' && !p.label);
     expect(lessons).toHaveLength(3);
     const citations = lessons.map((l) => (l as { text: { citation?: { en?: string } } }).text.citation?.en);
-    expect(citations).toEqual(['Isa 6; Isa 7', 'Sap 2', undefined]);
+    expect(citations).toEqual(['Isa 6-7', 'Sap 2', undefined]);
     expect((lessons[0] as { text: { status: { en?: string } } }).text.status.en).toBe('verified');
   });
 
@@ -154,7 +154,7 @@ describe('resolveOrdo("matins", ...) Sunday (3-nocturn) branch', () => {
   it("resolves the user's own bible-plan reading (Tobit/Sirach) for Nocturn 1", () => {
     const lessons = ordo.parts.filter((p) => p.kind === 'lesson');
     const citations = lessons.map((l) => (l as { text: { citation?: { en?: string } } }).text.citation?.en);
-    expect(citations).toContain('Tob 1; Tob 2');
+    expect(citations).toContain('Tob 1-2');
     expect(citations).toContain('Sir 45');
   });
 

tests/propers/bible-plan.test.ts

@@ -0,0 +1,19 @@
+import { describe, expect, it } from 'vitest';
+import { getBiblePlanReadings } from '../../src/propers/bible-plan';
+
+describe('getBiblePlanReadings citation labels', () => {
+  const readings = getBiblePlanReadings('post-pentecost-14', 'thursday', '2026-09-17');
+
+  it('collapses a consecutive multi-chapter run of the same book into a range', () => {
+    expect(readings[0]?.citation.la).toBe('Job 34-37');
+    expect(readings[0]?.citation.en).toBe('Job 34-37');
+  });
+
+  it('leaves a single-chapter reading unchanged', () => {
+    expect(readings[1]?.citation.la).toBe('Sir 42');
+  });
+
+  it('leaves a verse-qualified citation unchanged, never merged into a range', () => {
+    expect(readings[2]?.citation.la).toBe('Luke 18:1-23');
+  });
+});