refactor(blog)!: delete blog demo feature

Veect retrofit (ADR-027): the template's demo content is being removed
to make room for the Veect package map. This slice deletes
packages/blog whole and prunes every composition edge in one commit:
core-api router mount, core-cms collections + regenerated Payload
types, web-next bindAll entry / home page / blog route / Tailwind
sources, blog e2e spec, tsconfig paths, fallow ignore entry,
anchor-guard + generator e2e feature lists, compliance artifacts,
and feature-list doc entries (CLAUDE.md, AGENTS.md, glossary).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016j8z4VHjedXDTjEDNg7qHK

apps/web-next/src/app/blog/[slug]/page.tsx

@@ -1,17 +0,0 @@
-import { ArticleDetail } from "@repo/blog/ui";
-import { bindAll } from "../../../server/bind-production";
-
-type PageProps = {
-  params: Promise<{ slug: string }>;
-};
-
-export default async function BlogPostPage({ params }: PageProps) {
-  await bindAll();
-  const { slug } = await params;
-
-  return (
-    <main className="px-6 py-8">
-      <ArticleDetail slug={slug} />
-    </main>
-  );
-}

apps/web-next/src/app/page.tsx

@@ -1,4 +1,3 @@
-import { ArticleList } from "@repo/blog/ui";
 import { bindAll } from "../server/bind-production";
 
 export default async function Home() {
@@ -6,10 +5,7 @@ export default async function Home() {
 
   return (
     <main className="mx-auto max-w-5xl px-6 py-8">
-      <h2 className="mb-4 text-2xl font-bold text-foreground">
-        Latest articles
-      </h2>
-      <ArticleList />
+      <h1 className="mb-4 text-2xl font-bold text-foreground">Veect</h1>
     </main>
   );
 }