Bootstrap some skeleton slides

package.json

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+{
+  "name": "recovering-deleted-wagtail-pages",
+  "type": "module",
+  "private": true,
+  "scripts": {
+    "build": "slidev build",
+    "start": "slidev",
+    "export": "slidev export"
+  },
+  "dependencies": {
+    "@slidev/cli": "^0.48.8",
+    "@slidev/theme-default": "latest",
+    "vue": "^3.4.21"
+  }
+}

setup/shiki.ts

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+import { defineShikiSetup } from '@slidev/types'
+
+export default defineShikiSetup(() => {
+  return {
+    themes: {
+      dark: 'github-dark',
+      light: 'github-light',
+    },
+  }
+})

slides.md

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+---
+title: Recovering deleted Wagtail pages and Django models
+class: text-center
+highlighter: shiki
+transition: slide-left
+---
+
+# Recovering deleted Wagtail pages and Django models
+
+### Jake Howard
+
+###### Senior Systems Engineer @ Torchbox
+###### Security Team @ Wagtail
+###### Performance Working Group @ Wagtail
+
+---
+layout: cover
+background: https://cdn.jsdelivr.net/gh/wagtail/wagtail@main/.github/wagtail-screenshot-with-browser.png
+---
+
+# Setting the scene
+
+---
+layout: cover
+---
+
+# Site history report
+
+---
+layout: cover
+---
+
+# Restoring from backups
+
+---
+layout: cover
+---
+
+# _Partial_ restores from backups
+
+---
+layout: center
+---
+
+# 1. Spin up a database backup
+
+---
+layout: center
+---
+
+<style>
+  pre.shiki {
+    font-size: 1.4rem;
+  }
+</style>
+
+# 2. Locate the page models
+
+<div class="pt-5">
+
+```python
+from wagtail.models import Page
+
+sysadmin_page = Page.objects.get(id=91)
+
+child_pages = sysadmin_page.get_descendants()
+```
+
+</div>
+
+---
+layout: center
+---
+
+<style>
+  pre.shiki {
+    font-size: 1.4rem;
+  }
+</style>
+
+# 3. Locate what was deleted
+
+<div class="pt-5">
+
+```python
+from django.contrib.admin.utils import NestedObjects
+
+collector = NestedObjects()
+collector.collect(list(child_pages) + [sysadmin_page])
+```
+
+</div>
+
+---
+layout: center
+---
+
+<style>
+  pre.shiki {
+    font-size: 1.4rem;
+  }
+</style>
+
+# 4. Serialize
+
+<div class="pt-5">
+
+```python
+from django.core import serializers
+
+class NoM2MSerializer(Serializer):
+    def handle_m2m_field(self, obj, field):
+        pass
+
+def get_model_instances():
+    for qs in collector.data.values():
+        yield from qs
+
+with open("deleted-models.json", "w") as f:
+    NoM2MSerializer().serialize(
+        get_model_instances(),
+        stream=f
+    )
+```
+
+</div>
+
+---
+layout: center
+---
+
+# 4a. Deserialize
+
+---
+layout: center
+---
+
+# 5. Test test test
+
+---
+layout: center
+---
+
+# 6. Showtime!
+
+---
+layout: end
+---
+
+# Conclusion