feat: add PriorityBadge component and integrate into TaskRow

- Implemented PriorityBadge component to display task priority with icons.
- Created TaskRow component to represent individual tasks with metadata.
- Added breadcrumb navigation for task hierarchy.
- Enhanced checkbox component to support indeterminate state.
- Introduced InputGroup for better input handling in task search.
- Updated tasks route to utilize new components and improve UI.
- Added empty state representation for task list.

scripts/ralph/prd.json

@@ -242,8 +242,8 @@
         "Verify in browser using dev-browser skill"
       ],
       "priority": 13,
-      "passes": false,
-      "notes": ""
+      "passes": true,
+      "notes": "Completed: Project Detail view with Breadcrumb (Client > Sub-Client path from clients list), H1 project name, 3 stat cards (Notes count, Tasks Complete done/total, Checkpoints approved/total), AI Project Summary card with sparkles icon showing aiSummary or placeholder text. All data fetched via tRPC queries scoped to projectId. shadcn/ui breadcrumb installed."
     },
     {
       "id": "US-014",