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/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',