feat(ui): add back navigation button to detail pages

- Implement reusable back button component
- Add back button to division and installation detail pages
- Improve navigation logic with additional state cleanup

app/components/pub/my-ui/nav-footer/ba.vue

@@ -0,0 +1,25 @@
+<script setup lang="ts">
+const emit = defineEmits<{
+  (e: 'click'): void
+}>()
+
+function onClick() {
+  emit('click')
+}
+</script>
+
+<template>
+  <div class="m-2 flex gap-2 px-2">
+    <Button
+      class="bg-gray-400"
+      type="button"
+      @click="onClick"
+    >
+      <Icon
+        name="i-lucide-arrow-left"
+        class="me-2 align-middle"
+      />
+      Back
+    </Button>
+  </div>
+</template>