feat(tasks): mark a delegated task with a hand-off arrow

A task assigned to somebody who is not you is out of your hands and into
theirs, but the row only showed their name — the same weight as any
other meta. The assignee is now a bordered chip led by an outgoing arrow
in the accent colour, so a list reads at a glance as which tasks are
yours to do and which you are waiting on. Covers the board too: its
cards render a TaskRow.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

web/src/lib/locales/da.js

@@ -188,6 +188,7 @@ export const da = {
 	'repeat.everyN.month': 'hver {n}. måned',
 	'repeat.everyN.year': 'hvert {n}. år',
 	'task.assignee': 'Ansvarlig: {name}',
+	'task.delegatedTo': 'Uddelegeret til {name}',
 	'task.subtasks': '{done} af {total} undertasks er lukket',
 	'task.attachments': '{n} vedhæftet',
 	'task.priority': 'Prioritet {n}',

web/src/lib/locales/en.js

@@ -184,6 +184,7 @@ export const en = {
 	'repeat.everyN.month': 'every {n} months',
 	'repeat.everyN.year': 'every {n} years',
 	'task.assignee': 'Assigned to {name}',
+	'task.delegatedTo': 'Delegated to {name}',
 	'task.subtasks': '{done} of {total} sub-tasks are done',
 	'task.attachments': '{n} attached',
 	'task.priority': 'Priority {n}',