Remove BiomeJS integration and improve task categorization in useTasks

- Removed BiomeJS configuration and replaced formatting script with ESLint in `package.json`.
- Updated `useTasks` to utilize `@vueuse/core` methods for improved task categorization and unique category retrieval.
- Simplified task grouping logic in `ListScreen`.

src/composables/useTasks.ts

@@ -1,6 +1,7 @@
 import { ref } from 'vue';
 import { useApi } from './useApi.ts';
 import { Task } from '../types.ts';
+import { useArrayReduce, useArrayUnique } from '@vueuse/core'
 
 const tasks = ref<Task[]>([]);
 const isLoading = ref(false);
@@ -75,6 +76,15 @@ export function useTasks() {
     }
   }
 
+  const tasksByCategory = useArrayReduce(tasks.value.sort((a,b) => a.id_ - b.id_), (acc, task) => {
+    const tag = task.tag ?? 'Uncategorized';
+    acc[tag] = acc[tag] ?? [];
+    acc[tag].push(task);
+    return acc;
+  }, {} as Record<string, Task[]>)
+
+  const categories = useArrayUnique(Object.keys(tasksByCategory.value))
+
   return {
     tasks,
     isLoading,
@@ -82,5 +92,6 @@ export function useTasks() {
     fetchTasks,
     createTask,
     updateTask,
+    categories,
   };
 }

src/screens/ListScreen.vue

@@ -14,12 +14,7 @@ onMounted(async () => {
 
 const visibleTasks = computed<Task[]>(() => tasks.value.filter(task => !task.archived))
 
-const categorizedTasks = computed(() => visibleTasks.value.reduce((acc, task) => {
-  const tag = task.tag ?? 'Uncategorized';
-  acc[tag] = acc[tag] ?? [];
-  acc[tag].push(task);
-  return acc;
-}, {} as Record<string, Task[]>))
+const categorizedTasks = computed(() => visibleTasks.value.reduce())
 
 const collapsed = ref<string[]>([]);