chore(frontend): normalize related post ordering

Include post ordering change produced by validation hooks and add a focused assertion so ordering regressions are covered.

Author: markmhendrickson

frontend/src/site/site_data.test.ts

@@ -2,6 +2,7 @@ import { describe, expect, it } from "vitest";
 import {
   CLI_COMMANDS_TABLE,
   FUNCTIONALITY_MATRIX,
+  LEARN_MORE_POSTS,
   MCP_ACTIONS_TABLE,
   SITE_CODE_SNIPPETS,
   SITE_SECTIONS,
@@ -36,4 +37,15 @@ describe("site_data", () => {
     expect(SITE_CODE_SNIPPETS.stdioConfigJson).toContain("\"mcpServers\"");
     expect(SITE_CODE_SNIPPETS.cliUploadExample).toContain("neotoma upload");
   });
+
+  it("keeps learn-more card ordering stable", () => {
+    const relatedPostTitles = LEARN_MORE_POSTS.filter((item) => item.label === "Related post").map(
+      (item) => item.title
+    );
+    expect(relatedPostTitles).toContain("Six agentic trends I'm betting on (and how I might be wrong)");
+    expect(relatedPostTitles).toContain("Why agent memory needs more than RAG");
+    expect(
+      relatedPostTitles.indexOf("Six agentic trends I'm betting on (and how I might be wrong)")
+    ).toBeLessThan(relatedPostTitles.indexOf("Why agent memory needs more than RAG"));
+  });
 });

frontend/src/site/site_data.ts

@@ -570,14 +570,6 @@ export const LEARN_MORE_POSTS: LearnMoreCardItem[] = [
     href: "https://markmhendrickson.com/posts/agent-memory-truth-problem",
     imageUrl: "https://markmhendrickson.com/images/posts/agent-memory-truth-problem-hero.png",
   },
-  {
-    label: "Related post",
-    title: "Why agent memory needs more than RAG",
-    description:
-      "Why similarity search works for exploration but breaks for durable state, and how schema-first memory closes the gap.",
-    href: "https://markmhendrickson.com/posts/why-agent-memory-needs-more-than-rag",
-    imageUrl: "https://markmhendrickson.com/images/posts/why-agent-memory-needs-more-than-rag-hero.png",
-  },
   {
     label: "Related post",
     title: "Six agentic trends I'm betting on (and how I might be wrong)",
@@ -586,6 +578,14 @@ export const LEARN_MORE_POSTS: LearnMoreCardItem[] = [
     href: "https://markmhendrickson.com/posts/six-agentic-trends-betting-on",
     imageUrl: "https://markmhendrickson.com/images/posts/six-agentic-trends-betting-on-hero.png",
   },
+  {
+    label: "Related post",
+    title: "Why agent memory needs more than RAG",
+    description:
+      "Why similarity search works for exploration but breaks for durable state, and how schema-first memory closes the gap.",
+    href: "https://markmhendrickson.com/posts/why-agent-memory-needs-more-than-rag",
+    imageUrl: "https://markmhendrickson.com/images/posts/why-agent-memory-needs-more-than-rag-hero.png",
+  },
   {
     label: "Related post",
     title: "Agent command centers need one source of truth",