feat(docs): archive 1.x docs with starlight-versions switcher

Replaces an autolink with a regular markdown link in local-development.md;
autolinks are invalid in MDX, which the version archiver converts pages to.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: Paul Mulligan

docs/astro.config.mjs

@@ -1,13 +1,22 @@
 // @ts-check
 import { defineConfig } from "astro/config";
 import starlight from "@astrojs/starlight";
+import starlightVersions from "starlight-versions";
 
 // https://astro.build/config
 export default defineConfig({
   site: "https://claudius-docs.pages.dev",
   integrations: [
     starlight({
       title: "Claudius",
+      plugins: [
+        // Archives a copy of the docs per major release line. When v2 ships,
+        // add a "2.x" entry here; the previous line stays browsable via the
+        // version switcher.
+        starlightVersions({
+          versions: [{ slug: "1.x", label: "v1.x" }],
+        }),
+      ],
       description:
         "Embeddable AI chat widget powered by Claude. React component + standalone script embed, backed by Cloudflare Workers.",
       social: [

docs/package.json

@@ -13,6 +13,7 @@
   "dependencies": {
     "@astrojs/starlight": "^0.40.0",
     "astro": "^6.4.5",
-    "sharp": "^0.34.5"
+    "sharp": "^0.34.5",
+    "starlight-versions": "^0.9.0"
   }
 }