Pin h5p-author 0.9.8, check the tool's --version, and name Node.js 22 for offline builds

The archive now carries 0.9.8's one-file tool, whose --version prints the
versions instead of crashing; the site's build runs it and stops unless it
prints the pinned author and pack versions. The guide's offline paragraph
says Node.js 22 or later, which the tool needs. From cubic's review of #48.

Author: alekswebnet

package.json

@@ -28,7 +28,7 @@
     "@codemirror/state": "6.7.6",
     "@codemirror/view": "6.43.15",
     "@lezer/highlight": "1.2.5",
-    "@missing-elements/h5p-author": "0.9.7",
+    "@missing-elements/h5p-author": "0.9.8",
     "@missing-elements/h5p-libraries": "1.1.0",
     "@missing-elements/h5p-offline-player": "1.6.0",
     "@missing-elements/h5p-runtime": "1.0.1",

pnpm-lock.yaml

@@ -269,8 +269,8 @@ csp: "default-src 'self'; script-src 'self'; style-src 'self'; img-src 'self'; o
       needs.
     </p>
     <p>
-      With Node.js on your own computer, the whole build can stay offline. Install the skill in an
-      agent with a terminal that runs a local model, from Ollama or LM Studio, and download
+      With Node.js 22 or later on your own computer, the whole build can stay offline. Install the
+      skill in an agent with a terminal that runs a local model, from Ollama or LM Studio, and download
       <a href="/h5p/bundles/h5p-author-build.tar.gz" download>h5p-author-build.tar.gz</a> once.
       Then tell the agent where the archive is. It builds the <code>.h5p</code> file on your
       computer, with no internet and nothing sent anywhere.

src/h5p/create-with-ai/index.njk

@@ -1,3 +1,4 @@
+import { execFileSync } from 'node:child_process'
 import { readdirSync, readFileSync } from 'node:fs'
 import { copyFile, mkdir, readFile, rm, writeFile } from 'node:fs/promises'
 import { basename, join, resolve } from 'node:path'
@@ -153,7 +154,9 @@ function sample(): Plugin {
  *   so a build whose text calls for one stops and names its part, which the chat fetches from here.
  * - `h5p-author.mjs`: the command line as one file, everything it imports bundled in by Vite, so it
  *   runs with nothing installed. It takes `--libraries`: the npm package's pinned pack is not with
- *   it, nor the package.json `--version` reads, so `index.json` says the versions.
+ *   it. Since 0.9.8 its `--version` prints the versions from copies of the two package.json files
+ *   Vite writes in (h5p-offline-player#198); before, it crashed, finding neither beside it. The
+ *   build runs it and stops where it does not print the versions `index.json` says.
  * - `index.json`: the author's and the pack's versions, and each bundle's file, size and parts.
  * - `libraries.txt`: the pack's licence list, which asks to travel with its libraries.
  *
@@ -196,6 +199,10 @@ function bundles(): Plugin {
         },
         ssr: { noExternal: true, target: 'node' }
       })
+      // The tool says its own versions, as a model checking it first asks: those this site pins.
+      const expected = `@missing-elements/h5p-author ${await version(author)}, library pack ${await version(libraries)}`
+      const printed = execFileSync(process.execPath, [join(folder, 'h5p-author.mjs'), '--version'], { encoding: 'utf8' }).trim()
+      if (printed !== expected) throw new Error(`h5p-author.mjs --version printed "${printed}", not "${expected}"`)
       // The archive lays them out as a build from the bundles does: `tar -xzf`, then `--libraries parts`.
       const archive = tarGz([
         ['h5p-author.mjs', await readFile(join(folder, 'h5p-author.mjs'))],