fix(heures) : titre drawer simplifié, bordure date noire, drawer au-dessus de la toolbar (z-index)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend/components/AppDrawer.vue

@@ -1,5 +1,5 @@
 <template>
-  <div v-if="modelValue" class="fixed inset-0 z-50">
+  <div v-if="modelValue" class="fixed inset-0 z-[60]">
     <Transition name="drawer-backdrop">
       <div class="absolute inset-0 bg-black/40" @click="close" />
     </Transition>

frontend/components/hours/HoursDayExportDrawer.vue

@@ -1,5 +1,5 @@
 <template>
-    <AppDrawer v-model="drawerOpen" title="Export des heures (par jour)">
+    <AppDrawer v-model="drawerOpen" title="Export des heures">
         <form class="space-y-4" @submit.prevent="handleSubmit">
             <div>
                 <label class="text-md font-semibold text-neutral-700" for="hours-export-date">
@@ -9,7 +9,7 @@
                     id="hours-export-date"
                     v-model="selectedDate"
                     type="date"
-                    class="mt-2 w-full rounded-md border border-neutral-300 px-3 py-2 text-md text-neutral-900"
+                    class="mt-2 w-full rounded-md border border-black px-3 py-2 text-md text-neutral-900"
                 >
             </div>