feat: templates per ticket type

Each ticket type can carry a starting description and a checklist, edited
in the project settings. New tickets of that type get the description
when they come without one and always get the checklist; the new ticket
form says what the template will add.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/web/tracker/infrastructure/src/lib/adapters/mappers.ts

@@ -86,6 +86,12 @@ export function toSettingsInput(
       icon: t.icon,
       color: t.color,
       archived: t.archived,
+      template: t.template
+        ? {
+            description: t.template.description ?? null,
+            checklist: t.template.checklist,
+          }
+        : null,
     })),
     areas: settings.areas.map((a) => ({
       id: a.id,