3 files changed, 94 insertions, 3 deletions

diff --git a/src/lib/shared/filter-items.test.ts b/src/lib/shared/filter-items.test.ts
new file mode 100644
index 0000000..3477cd1
--- /dev/null
+++ b/src/lib/shared/filter-items.test.ts
@@ -0,0 +1,53 @@
+import { describe, it, expect } from 'vitest';
+import { filterByName } from './filter-items';
+
+const routines = [
+	{ id: 1, name: 'Cuisine/Repas' },
+	{ id: 2, name: 'Cuisine/Vaisselle' },
+	{ id: 3, name: 'Salle de bain/Douche' },
+	{ id: 4, name: 'Étirements' },
+	{ id: 5, name: 'Course' },
+];
+
+describe('filterByName', () => {
+	it('filters by a namespace query like "Cuisine/"', () => {
+		const res = filterByName(routines, 'Cuisine/');
+		expect(res.map((r) => r.name)).toEqual([
+			'Cuisine/Repas',
+			'Cuisine/Vaisselle',
+		]);
+	});
+
+	it('matches a substring anywhere in the name', () => {
+		const res = filterByName(routines, 'epas');
+		expect(res.map((r) => r.name)).toEqual(['Cuisine/Repas']);
+	});
+
+	it('is case-insensitive', () => {
+		expect(filterByName(routines, 'cUiSiNe/')).toHaveLength(2);
+	});
+
+	it('folds accents on both sides', () => {
+		expect(filterByName(routines, 'etirements').map((r) => r.name)).toEqual([
+			'Étirements',
+		]);
+		expect(filterByName(routines, 'Étirements')).toHaveLength(1);
+	});
+
+	it('returns everything for an empty or whitespace query, order preserved', () => {
+		expect(filterByName(routines, '')).toEqual(routines);
+		expect(filterByName(routines, '   ')).toEqual(routines);
+	});
+
+	it('returns nothing when no name matches', () => {
+		expect(filterByName(routines, 'garage')).toEqual([]);
+	});
+
+	it('has no result cap', () => {
+		const many = Array.from({ length: 40 }, (_, i) => ({
+			id: i,
+			name: `Cuisine/Tâche ${i}`,
+		}));
+		expect(filterByName(many, 'Cuisine/')).toHaveLength(40);
+	});
+});
diff --git a/src/lib/shared/filter-items.ts b/src/lib/shared/filter-items.ts
new file mode 100644
index 0000000..e7e103b
--- /dev/null
+++ b/src/lib/shared/filter-items.ts
@@ -0,0 +1,16 @@
+/** Lowercase and strip diacritics so "etirements" matches "Étirements". */
+function fold(value: string): string {
+	return value.normalize('NFD').replace(/\p{M}/gu, '').toLowerCase();
+}
+
+/** Filter `items` to those whose `name` contains `query` as a literal
+ * substring, case- and accent-insensitive. Order is preserved and no result
+ * cap applies. Empty/whitespace query returns everything. */
+export function filterByName<T extends { name: string }>(
+	items: T[],
+	query: string,
+): T[] {
+	const q = fold(query.trim());
+	if (q === '') return items;
+	return items.filter((item) => fold(item.name).includes(q));
+}
diff --git a/src/routes/projects/[id]/+page.svelte b/src/routes/projects/[id]/+page.svelte
index 8d62a39..7d9a146 100644
--- a/src/routes/projects/[id]/+page.svelte
+++ b/src/routes/projects/[id]/+page.svelte
@@ -13,6 +13,7 @@
 	} from '$lib/shared/routine-metrics';
 	import SectionTitle from '$lib/components/SectionTitle.svelte';
 	import { formatDayMonth } from '$lib/shared/temporal';
+	import { filterByName } from '$lib/shared/filter-items';
 
 	let { data, form } = $props();
 
@@ -35,6 +36,11 @@
 			(a, b) => b.overdueRatio - a.overdueRatio || a.name.localeCompare(b.name),
 		);
 	}
+
+	let routineSearch = $state('');
+	const filteredRoutines = $derived(
+		filterByName(sorted(data.routines), routineSearch),
+	);
 </script>
 
 <main>
@@ -102,8 +108,17 @@
 		<p class="error">{form.error}</p>
 	{/if}
 
+	<input
+		class="form-input routine-search"
+		type="search"
+		bind:value={routineSearch}
+		placeholder="Rechercher une routine..."
+		autocomplete="off"
+		aria-label="Rechercher parmi les routines"
+	/>
+
 	<ul class="item-list">
-		{#each sorted(data.routines) as routine (routine.id)}
+		{#each filteredRoutines as routine (routine.id)}
 			<Row style="flex-wrap: wrap; padding: 0.75rem 1rem;">
 				<form method="POST" action="?/complete" use:enhance>
 					<input type="hidden" name="id" value={routine.id} />
@@ -133,8 +148,10 @@
 		{/each}
 	</ul>
 
-	{#if data.routines.length === 0}
-		<p class="empty">Aucune routine</p>
+	{#if filteredRoutines.length === 0}
+		<p class="empty">
+			{data.routines.length === 0 ? 'Aucune routine' : 'Aucune correspondance.'}
+		</p>
 	{/if}
 
 	{#if data.archived.length > 0}
@@ -220,6 +237,11 @@
 		flex-shrink: 0;
 	}
 
+	.routine-search {
+		width: 100%;
+		margin-bottom: 0.75rem;
+	}
+
 	.page-footer {
 		margin-top: 2rem;
 		display: flex;