Built-in BlogSite routes

using Pennington.BlogSite;
  
var builder = WebApplication.CreateBuilder(args);
  
// Swap the bare `AddPennington` host for the BlogSite template. `AddBlogSite`
// wires the full blog experience on top of Pennington core — a Blazor
// layout with a home page that lists recent posts, an /archive page,
// /blog/<slug> post pages, /tags and /tags/<name> listings, and an
// /rss.xml feed — all driven from `BlogSiteOptions`.
builder.Services.AddBlogSite(() => new BlogSiteOptions
{
    SiteTitle = "Scaffold Blog",
    Description = "A minimal BlogSite scaffold showing AddBlogSite, UseBlogSite, and RunBlogSiteAsync.",
    CanonicalBaseUrl = "https://example.com",
  
    // BlogSite defaults put posts under `{ContentRootPath}/{BlogContentPath}`
    // (Content/Blog) and serves them at `BlogBaseUrl` (/blog). Tag listings
    // live at `TagsPageUrl` (/tags). Overriding the defaults is as simple as
    // setting the matching property — shown here with the defaults for
    // clarity.
    ContentRootPath = "Content",
    BlogContentPath = "Blog",
    BlogBaseUrl = "/blog",
    TagsPageUrl = "/tags",
  
    // Author identity feeds into the RSS channel, JSON-LD article markup,
    // and any post that omits its own `author:` front-matter value.
    AuthorName = "Author Name",
    AuthorBio = "Writing about software, tools, and the occasional side project.",
});
  
var app = builder.Build();
  
// `UseBlogSite` mounts antiforgery, static files, Razor component routing
// (Home/Archive/Blog/Tag/Tags live inside Pennington.BlogSite.dll), the
// MonorailCSS response processor, and the core Pennington middleware —
// all in the right order. When `EnableRss` is true (the default) it also
// maps `/rss.xml` so the static crawler picks the feed up.
app.UseBlogSite();
  
// `RunBlogSiteAsync` delegates to `RunOrBuildAsync`, so `dotnet run` serves the
// blog live and `dotnet run -- build <baseUrl> <outputDir>` generates static
// HTML. Both positional args are optional (defaults: `/` and `output`).
await app.RunBlogSiteAsync(args);