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.

src/renderer/components/ui/checkbox.tsx

@@ -1,7 +1,7 @@
 "use client"
 
 import * as React from "react"
-import { CheckIcon } from "lucide-react"
+import { CheckIcon, MinusIcon } from "lucide-react"
 import { Checkbox as CheckboxPrimitive } from "radix-ui"
 
 import { cn } from "@/lib/utils"
@@ -10,11 +10,12 @@ function Checkbox({
   className,
   ...props
 }: React.ComponentProps<typeof CheckboxPrimitive.Root>) {
+  const isIndeterminate = props.checked === 'indeterminate';
   return (
     <CheckboxPrimitive.Root
       data-slot="checkbox"
       className={cn(
-        "peer border-input dark:bg-input/30 data-[state=checked]:bg-primary data-[state=checked]:text-primary-foreground dark:data-[state=checked]:bg-primary data-[state=checked]:border-primary focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive size-4 shrink-0 rounded-[4px] border shadow-xs transition-shadow outline-none focus-visible:ring-[3px] disabled:cursor-not-allowed disabled:opacity-50",
+        "peer border-input dark:bg-input/30 data-[state=checked]:bg-primary data-[state=checked]:text-primary-foreground dark:data-[state=checked]:bg-primary data-[state=checked]:border-primary data-[state=indeterminate]:bg-primary data-[state=indeterminate]:text-primary-foreground data-[state=indeterminate]:border-primary focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive size-4 shrink-0 rounded-[4px] border shadow-xs transition-shadow outline-none focus-visible:ring-[3px] disabled:cursor-not-allowed disabled:opacity-50",
         className
       )}
       {...props}
@@ -23,7 +24,7 @@ function Checkbox({
         data-slot="checkbox-indicator"
         className="grid place-content-center text-current transition-none"
       >
-        <CheckIcon className="size-3.5" />
+        {isIndeterminate ? <MinusIcon className="size-3.5" /> : <CheckIcon className="size-3.5" />}
       </CheckboxPrimitive.Indicator>
     </CheckboxPrimitive.Root>
   )