feat: add Meta title tags to all admin pages

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/frontend/src/routes/admin/videos/+page.svelte

@@ -11,6 +11,7 @@
   import { Input } from "$lib/components/ui/input";
   import * as Dialog from "$lib/components/ui/dialog";
   import type { Video } from "$lib/types";
+  import Meta from "$lib/components/meta/meta.svelte";
 
   const { data } = $props();
 
@@ -61,6 +62,8 @@
   }
 </script>
 
+<Meta title={$_("admin.videos.title")} description={null} />
+
 <div class="py-3 sm:py-6 sm:pl-6">
   <div class="flex items-center justify-between mb-6 px-3 sm:px-0">
     <h1 class="text-2xl font-bold">{$_("admin.videos.title")}</h1>

packages/frontend/src/routes/admin/videos/[id]/+page.svelte

@@ -13,6 +13,7 @@
   import { getAssetUrl } from "$lib/api";
   import { Select, SelectContent, SelectItem, SelectTrigger } from "$lib/components/ui/select";
   import { DatePicker } from "$lib/components/ui/date-picker";
+  import Meta from "$lib/components/meta/meta.svelte";
 
   const { data } = $props();
 
@@ -102,6 +103,8 @@
   }
 </script>
 
+<Meta title={$_("admin.video_form.edit_title")} description={null} />
+
 <div class="p-3 sm:p-6 max-w-2xl">
   <div class="flex items-center gap-4 mb-6">
     <Button variant="ghost" href="/admin/videos" size="sm">

packages/frontend/src/routes/admin/videos/new/+page.svelte

@@ -10,6 +10,7 @@
   import { TagsInput } from "$lib/components/ui/tags-input";
   import { DatePicker } from "$lib/components/ui/date-picker";
   import { FileDropZone, MEGABYTE } from "$lib/components/ui/file-drop-zone";
+  import Meta from "$lib/components/meta/meta.svelte";
 
   const { data } = $props();
 
@@ -97,6 +98,8 @@
   }
 </script>
 
+<Meta title={$_("admin.video_form.new_title")} description={null} />
+
 <div class="p-3 sm:p-6 max-w-2xl">
   <div class="flex items-center gap-4 mb-6">
     <Button variant="ghost" href="/admin/videos" size="sm">