feat(tasks): snooze — park a task at the bottom until a time

Snooze puts a task out of the way without finishing it or filing it: it sinks to
the bottom of its list and greys, and comes back on its own when its time passes.
No job wakes it — "snoozed" is just snoozed_until being still in the future, read
against the clock each time the list is ordered.

- `snoozed_until` on tasks (migration 0031); the list order sinks a still-snoozed
  task below everything, and it rejoins its place the moment the time passes.
- POST /tasks/{id}/snooze {until} — an RFC3339 time to snooze to, or empty to wake.
  Nothing else about the task moves; a snooze is about when you want to see it, not
  when it is due.
- The task drawer gains quick picks (this evening / tomorrow / next week) and a
  custom time, and a Wake now once it is snoozed. The row dims and carries a
  "snoozed until X" mark, and the list keeps snoozed tasks at the foot — the client
  sorts the same way the server does, so a drag-sorted list does not jump on reload.

Tests: snooze sinks a task below one made after it and waking returns it (Go); and
from the drawer the row greys, shows the mark, and un-greys on wake (e2e). Full
suites green.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

web/e2e/smoke.spec.js

@@ -127,6 +127,32 @@ test('hvert link i sidebjælken fører et sted hen', async ({ page }) => {
 	expect(trouble).toEqual([]);
 });
 
+test('en opgave kan slumres og hentes frem igen', async ({ page }) => {
+	const trouble = watchForTrouble(page);
+	await page.goto('/');
+
+	// "i dag" is parsed as the due date, so the task is named "Alfa" and shows here.
+	const box = page.getByLabel('Ny opgave');
+	await box.fill('Alfa i dag');
+	await box.press('Enter');
+
+	// Snooze it to tomorrow from its drawer.
+	await page.getByText('Alfa', { exact: true }).click();
+	const drawer = page.getByRole('complementary', { name: 'Opgave' });
+	await drawer.getByRole('button', { name: 'I morgen' }).click();
+
+	// The row greys — it carries the snoozed class and a "slumret til" mark.
+	const alfa = page.locator('.row', { hasText: 'Alfa' });
+	await expect(alfa).toHaveClass(/snoozed/);
+	await expect(alfa.locator('.snooze-mark')).toBeVisible();
+
+	// The drawer now offers to wake it, and waking takes the grey off.
+	await drawer.getByRole('button', { name: 'Væk nu' }).click();
+	await expect(alfa).not.toHaveClass(/snoozed/);
+
+	expect(trouble).toEqual([]);
+});
+
 test('en opgave kan åbnes og redigeres', async ({ page }) => {
 	const trouble = watchForTrouble(page);
 	await page.goto('/');

web/src/lib/api.js

@@ -310,6 +310,7 @@ export const api = {
 	completeTask: (id) => post(`/tasks/${id}/complete`),
 	reopenTask: (id) => post(`/tasks/${id}/reopen`),
 	moveTask: (id, data) => post(`/tasks/${id}/move`, data),
+	snoozeTask: (id, until) => post(`/tasks/${id}/snooze`, { until: until ?? '' }),
 
 	quickAdd: (text, projectId, sectionId) =>
 		post('/tasks/quick-add', { text, project_id: projectId, section_id: sectionId }),

web/src/lib/components/TaskDetail.svelte

@@ -13,7 +13,7 @@
 	import { api, humanMessage } from '$lib/api.js';
 	import { app, projectName, clockOf } from '$lib/stores.svelte.js';
 	import { focusOnMount } from '$lib/focus.js';
-	import { t } from '$lib/i18n.svelte.js';
+	import { t, tag } from '$lib/i18n.svelte.js';
 	import { REPEATS } from '$lib/when.js';
 
 	let { task, onclose } = $props();
@@ -26,6 +26,46 @@
 	// Length in minutes, as a string for the field. Only meaningful with a time —
 	// see the field below — so it is seeded and shown alongside the clock.
 	let duration = $state('');
+	let snoozeCustom = $state('');
+
+	const snoozed = $derived(!!task?.snoozed_until && new Date(task.snoozed_until) > new Date());
+	const snoozedText = $derived(
+		snoozed
+			? new Date(task.snoozed_until).toLocaleString(tag(), {
+					day: 'numeric',
+					month: 'short',
+					hour: '2-digit',
+					minute: '2-digit'
+				})
+			: ''
+	);
+
+	async function snoozeTo(iso) {
+		snoozeCustom = '';
+		try {
+			await app.snooze(task.id, iso);
+		} catch (e) {
+			app.toast(humanMessage(e));
+		}
+	}
+
+	// Quick picks, in local time, as ISO for the API. This evening is six; the
+	// morning ones are nine; next week is the coming Monday.
+	const atLocal = (d, h) => {
+		d.setHours(h, 0, 0, 0);
+		return d.toISOString();
+	};
+	const thisEvening = () => atLocal(new Date(), 18);
+	const tomorrowMorning = () => {
+		const d = new Date();
+		d.setDate(d.getDate() + 1);
+		return atLocal(d, 9);
+	};
+	const nextWeek = () => {
+		const d = new Date();
+		d.setDate(d.getDate() + (((8 - d.getDay()) % 7) || 7));
+		return atLocal(d, 9);
+	};
 	let labels = $state('');
 	let projectId = $state('');
 	let recurrence = $state('');
@@ -459,6 +499,31 @@
 			</div>
 		</div>
 
+		<!-- Snooze: park it out of the way until a moment, without touching when it is
+		     due. While snoozed the row greys and sinks to the bottom of its list. -->
+		<div class="field">
+			<span class="field-label">{t('detail.snooze')}</span>
+			{#if snoozed}
+				<div class="snoozed-now">
+					<span>{t('task.snoozedUntil', { when: snoozedText })}</span>
+					<button class="snooze-btn" onclick={() => snoozeTo('')}>{t('detail.wake')}</button>
+				</div>
+			{:else}
+				<div class="snooze-row">
+					<button class="snooze-btn" onclick={() => snoozeTo(thisEvening())}>{t('detail.thisEvening')}</button>
+					<button class="snooze-btn" onclick={() => snoozeTo(tomorrowMorning())}>{t('detail.tomorrow')}</button>
+					<button class="snooze-btn" onclick={() => snoozeTo(nextWeek())}>{t('detail.nextWeek')}</button>
+					<input
+						type="datetime-local"
+						class="snooze-custom"
+						aria-label={t('detail.snoozeCustom')}
+						bind:value={snoozeCustom}
+						onchange={() => snoozeCustom && snoozeTo(new Date(snoozeCustom).toISOString())}
+					/>
+				</div>
+			{/if}
+		</div>
+
 		<div class="field">
 			<label for="labels">{t('detail.labels')}</label>
 			<input
@@ -765,13 +830,47 @@
 		gap: var(--s2);
 	}
 
-	label {
+	label,
+	.field-label {
 		font-size: var(--text-xs);
 		text-transform: uppercase;
 		letter-spacing: 0.06em;
 		color: var(--ink-faint);
 	}
 
+	.snooze-row {
+		display: flex;
+		flex-wrap: wrap;
+		gap: var(--s1);
+		align-items: center;
+	}
+	.snooze-btn {
+		width: auto;
+		padding: var(--s1) var(--s2);
+		font-size: var(--text-xs);
+		background: var(--surface);
+		border: 1px solid var(--line);
+		border-radius: var(--radius);
+		color: var(--ink);
+		cursor: pointer;
+	}
+	.snooze-btn:hover {
+		background: var(--surface-raised);
+	}
+	.snooze-custom {
+		width: auto;
+		flex: 1;
+		min-width: 9rem;
+	}
+	.snoozed-now {
+		display: flex;
+		align-items: center;
+		justify-content: space-between;
+		gap: var(--s2);
+		font-size: var(--text-sm);
+		color: var(--ink-muted);
+	}
+
 	input,
 	textarea,
 	select {

web/src/lib/components/TaskList.svelte

@@ -120,7 +120,18 @@
 		}
 	}
 
-	let ordered = $derived([...tasks].sort((a, b) => a.sort_order - b.sort_order));
+	// A snoozed task sinks below the rest, then rises back when its time passes —
+	// the same order the server sorts a list in, kept here so a drag-sorted list
+	// agrees rather than jumping when it reloads.
+	const snoozedNow = (t) => t.snoozed_until && new Date(t.snoozed_until) > new Date();
+	let ordered = $derived(
+		[...tasks].sort((a, b) => {
+			const sa = snoozedNow(a) ? 1 : 0;
+			const sb = snoozedNow(b) ? 1 : 0;
+			if (sa !== sb) return sa - sb;
+			return a.sort_order - b.sort_order;
+		})
+	);
 </script>
 
 {#each ordered as task (task.id)}

web/src/lib/components/TaskRow.svelte

@@ -63,9 +63,30 @@
 				})
 			: null
 	);
+
+	// Snoozed while its time is still ahead. Greys the row and adds a "slumret til"
+	// mark, so a parked task reads as set-aside rather than forgotten.
+	let snoozed = $derived(task.snoozed_until && new Date(task.snoozed_until) > new Date());
+	let snoozedLabel = $derived.by(() => {
+		if (!snoozed) return null;
+		const at = new Date(task.snoozed_until);
+		const midnight = new Date();
+		midnight.setHours(0, 0, 0, 0);
+		const days = Math.round((new Date(at.toDateString()) - midnight) / 86400000);
+		const clock = at.toLocaleTimeString(tag(), { hour: '2-digit', minute: '2-digit' });
+		if (days <= 0) return clock;
+		if (days === 1) return t('task.tomorrow') + ' ' + clock;
+		return at.toLocaleDateString(tag(), { day: 'numeric', month: 'short' }) + ' ' + clock;
+	});
 </script>
 
-<div class="row" class:leaving class:completed={task.completed} data-priority={task.priority}>
+<div
+	class="row"
+	class:leaving
+	class:completed={task.completed}
+	class:snoozed
+	data-priority={task.priority}
+>
 	<button
 		class="check"
 		class:checked={task.completed || leaving}
@@ -100,6 +121,14 @@
 						{assignee.name}
 					</span>
 				{/if}
+				{#if snoozed}
+					<span class="snooze-mark" title={t('task.snoozedUntil', { when: snoozedLabel })}>
+						<svg viewBox="0 0 24 24" aria-hidden="true">
+							<path d="M4 6h8l-8 8h8" fill="none" stroke="currentColor" stroke-width="2" stroke-linejoin="round" />
+						</svg>
+						{snoozedLabel}
+					</span>
+				{/if}
 				{#if due}
 					<span class="due" data-tone={due.tone}>
 						{due.text}{#if time}&nbsp;{time}{/if}
@@ -183,6 +212,26 @@
 		text-decoration-color: var(--ink-faint);
 	}
 
+	/* Parked, not gone: dimmed so it reads as set aside, but still there and still
+	   readable. The checkbox and the snooze mark keep their weight, so it can be
+	   woken or ticked off without peering at it. */
+	.row.snoozed .content,
+	.row.snoozed .description,
+	.row.snoozed .meta {
+		opacity: 0.5;
+	}
+	.snooze-mark {
+		display: inline-flex;
+		align-items: center;
+		gap: 3px;
+		color: var(--ink-muted);
+		opacity: 1;
+	}
+	.snooze-mark svg {
+		width: 12px;
+		height: 12px;
+	}
+
 	.check {
 		flex: none;
 		width: 20px;

web/src/lib/locales/da.js

@@ -600,6 +600,13 @@ export const da = {
 	'detail.due': 'Forfalder',
 	'detail.dueTime': 'Klokkeslæt',
 	'detail.duration': 'Længde i minutter',
+	'detail.snooze': 'Slumre',
+	'detail.wake': 'Væk nu',
+	'detail.thisEvening': 'I aften',
+	'detail.tomorrow': 'I morgen',
+	'detail.nextWeek': 'Næste uge',
+	'detail.snoozeCustom': 'Vælg tidspunkt',
+	'task.snoozedUntil': 'Slumret til {when}',
 	'detail.durationShort': 'min',
 	'detail.labels': 'Etiketter',
 	'detail.labelsPlaceholder': 'adskilt af komma',

web/src/lib/locales/en.js

@@ -596,6 +596,13 @@ export const en = {
 	'detail.due': 'Due',
 	'detail.dueTime': 'Time',
 	'detail.duration': 'Length in minutes',
+	'detail.snooze': 'Snooze',
+	'detail.wake': 'Wake now',
+	'detail.thisEvening': 'This evening',
+	'detail.tomorrow': 'Tomorrow',
+	'detail.nextWeek': 'Next week',
+	'detail.snoozeCustom': 'Pick a time',
+	'task.snoozedUntil': 'Snoozed until {when}',
 	'detail.durationShort': 'min',
 	'detail.labels': 'Labels',
 	'detail.labelsPlaceholder': 'separated by commas',

web/src/lib/stores.svelte.js

@@ -408,6 +408,19 @@ class AppState {
 	 * and time are left alone, so making a task longer on the calendar does not
 	 * also reschedule it.
 	 */
+	/**
+	 * Snoozes a task until an ISO time, or wakes it when `until` is empty. Nothing
+	 * else about the task moves — a snooze is about when you want to see it, not when
+	 * it is due. Optimistic, so it greys and sinks at once.
+	 */
+	async snooze(id, until) {
+		await this.#optimistic(
+			id,
+			{ snoozed_until: until || undefined },
+			() => api.snoozeTask(id, until || '')
+		);
+	}
+
 	async resize(id, minutes) {
 		const previous = this.get(id);
 		if (!previous) return;