feat : helpers isMonthInRange/isYearInRange (#date-year-picker)

Recommit : Task 2 avait orphelin le commit d'origine (reset HEAD).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/components/malio/date/composables/dateFormat.test.ts

@@ -1,5 +1,5 @@
 import {describe, expect, it} from 'vitest'
-import {formatIsoToDisplay, isDateInRange, isValidIso, parseDisplayToIso} from './dateFormat'
+import {formatIsoToDisplay, isDateInRange, isMonthInRange, isValidIso, isYearInRange, parseDisplayToIso} from './dateFormat'
 
 describe('dateFormat', () => {
   describe('isValidIso', () => {
@@ -59,4 +59,36 @@ describe('dateFormat', () => {
       expect(isDateInRange('2026-05-25', '2026-05-10', '2026-05-20')).toBe(false)
     })
   })
+
+  describe('isMonthInRange', () => {
+    it('returns true when no bounds are given', () => {
+      expect(isMonthInRange(2026, 4)).toBe(true)
+    })
+    it('respects the min bound by month (inclusive)', () => {
+      expect(isMonthInRange(2026, 4, '2026-05-10')).toBe(true) // mai chevauche
+      expect(isMonthInRange(2026, 3, '2026-05-10')).toBe(false) // avril < mai
+    })
+    it('respects the max bound by month (inclusive)', () => {
+      expect(isMonthInRange(2026, 4, undefined, '2026-05-31')).toBe(true)
+      expect(isMonthInRange(2026, 5, undefined, '2026-05-31')).toBe(false) // juin > mai
+    })
+    it('disables months in years outside the range', () => {
+      expect(isMonthInRange(2025, 11, '2026-05-10')).toBe(false)
+      expect(isMonthInRange(2027, 0, undefined, '2026-05-31')).toBe(false)
+    })
+  })
+
+  describe('isYearInRange', () => {
+    it('returns true when no bounds are given', () => {
+      expect(isYearInRange(2026)).toBe(true)
+    })
+    it('respects the min bound by year (inclusive)', () => {
+      expect(isYearInRange(2026, '2026-05-10')).toBe(true)
+      expect(isYearInRange(2025, '2026-05-10')).toBe(false)
+    })
+    it('respects the max bound by year (inclusive)', () => {
+      expect(isYearInRange(2026, undefined, '2026-05-31')).toBe(true)
+      expect(isYearInRange(2027, undefined, '2026-05-31')).toBe(false)
+    })
+  })
 })