Updated admin page to be more streamlined and added the beginning of the blogging features

OpenArchival.Blazor.ArchiveSearch/SearchPageSlider.razor

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+@using Microsoft.EntityFrameworkCore
+@using OpenArchival.DataAccess
+@using MudBlazor
+@using OpenArchival.Blazor.ArtifactGroupingDisplay
+
+<MudPaper Class="pa-4 ma-2 rounded" Elevation="3" Style="overflow-x:auto">
+    <MudText Typo="Typo.h6">@SliderEntry.Title</MudText>
+    <MudDivider/>
+    @if (!string.IsNullOrEmpty(SliderEntry.Description))
+    {
+        <MudText Typo="Typo.caption">@SliderEntry.Description</MudText>
+    }
+    <MudStack Row="true" Spacing="4" Style="flex-wrap: nowrap;">
+        @foreach (ArtifactGrouping grouping in ArtifactGroupings)
+        {
+            <div style="min-width: 300px;">
+                <ArtifactGroupingSearchResult ArtifactGrouping="grouping" Height="300"></ArtifactGroupingSearchResult>
+            </div>
+        }
+    </MudStack>
+</MudPaper>
+
+
+@inject IDbContextFactory<ApplicationDbContext> ContextFactory;
+@code {
+    [Parameter]
+    public required SearchPageSliderEntry SliderEntry { get; set; }
+
+    private List<ArtifactGrouping> ArtifactGroupings { get; set; } = [];
+
+    protected override async Task OnParametersSetAsync()
+    {
+        await using var context = await ContextFactory.CreateDbContextAsync();
+
+        // First, handle the case where there are no tags to filter by.
+        if (SliderEntry.FilterTags == null || !SliderEntry.FilterTags.Any())
+        {
+            ArtifactGroupings = new List<ArtifactGrouping>();
+            return;
+        }
+
+        // It's much more efficient to get the IDs of the tags first.
+        var requiredTagIds = SliderEntry.FilterTags.Select(t => t.Id).ToList();
+        int requiredTagCount = requiredTagIds.Count;
+
+        ArtifactGroupings = await context.ArtifactGroupings
+            .Include(g => g.ChildArtifactEntries)
+                .ThenInclude(e => e.Tags)
+            .Include(g=>g.ChildArtifactEntries)
+                .ThenInclude(e=>e.Files)
+            .Where(grouping =>
+                grouping.ChildArtifactEntries.Any(entry =>
+                    entry.Tags.Count(tag => requiredTagIds.Contains(tag.Id)) == requiredTagCount
+                )
+            )
+            // AsSplitQuery() is a performance optimization for complex queries with multiple Includes.
+            .AsSplitQuery()
+            .ToListAsync();
+
+        StateHasChanged();
+    }
+}