Ajout gitignore pour les opencode stuff

src/hooks/useCategories.js

@@ -0,0 +1,19 @@
+import { useEffect, useState, useCallback } from 'react'
+import { supabase } from '@/lib/supabase'
+
+export function useCategories() {
+  const [categories, setCategories] = useState([])
+  const [loading, setLoading] = useState(true)
+
+  const fetch = useCallback(async () => {
+    const { data, error } = await supabase.from('categories').select('*').order('name')
+    if (!error && data) setCategories(data)
+    setLoading(false)
+    return { data, error }
+  }, [])
+
+  // eslint-disable-next-line react-hooks/set-state-in-effect
+  useEffect(() => { fetch() }, [fetch])
+
+  return { categories, loading, refetch: fetch }
+}