feat(ui): add verify_required select to TaskDetailDialog

SoloTask interface, solo page mapping, solo store, PATCH route handler
and TaskDetailDialog all updated to expose the three-level verify gate
(ALIGNED / ALIGNED_OR_PARTIAL / ANY) as a native select. Disabled with
DemoTooltip in demo mode.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

__tests__/components/solo/task-detail-dialog.test.tsx

@@ -60,6 +60,7 @@ const baseTask: SoloTask = {
   sort_order: 1,
   status: 'TO_DO',
   verify_only: false,
+  verify_required: 'ALIGNED_OR_PARTIAL',
   story_id: 'story-1',
   story_code: 'ST-100',
   story_title: 'Test Story',

__tests__/stores/solo-store-realtime.test.ts

@@ -12,6 +12,7 @@ const baseTask = (id: string, overrides: Partial<SoloTask> = {}): SoloTask => ({
   sort_order: 1,
   status: 'TO_DO',
   verify_only: false,
+  verify_required: 'ALIGNED_OR_PARTIAL',
   story_id: 'story-1',
   story_code: 'ST-100',
   story_title: 'Original Story',