chore: keep the fixture generator scripts and the replay-sample bot

scripts/fixtures/ holds the scripts that produced the 2026-11-11
fixtures, with a README on running them safely into a copy. Run in
order they reproduce the content of every fixture they touch.

Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>

scripts/fixtures/add-queued-field.mjs

@@ -0,0 +1,23 @@
+import fs from 'node:fs'
+// Fixture regeneration aid (see scripts/fixtures/README.md). Written during the 2026-11-11 build, kept for reference.
+// Writes into fixtures/ unless FIXTURES_OUT names another directory (with a trailing slash).
+const FIX = process.env.FIXTURES_OUT ?? new URL('../../fixtures/', import.meta.url).pathname
+const SOL = new URL('../../js/solutions/', import.meta.url).href
+const HERE = new URL('./', import.meta.url).pathname
+const dir = FIX
+const walk = (x) => {
+  if (Array.isArray(x)) return x.map(walk)
+  if (x && typeof x === 'object') {
+    const o = Object.fromEntries(Object.entries(x).map(([k, v]) => [k, walk(v)]))
+    return ('snake' in o && 'nextDir' in o && !('queued' in o)) ? { ...o, queued: null } : o
+  }
+  return x
+}
+for (const f of fs.readdirSync(dir)) {
+  const txt = fs.readFileSync(dir + f, 'utf8')
+  if (!f.endsWith('.json')) continue
+  const before = JSON.parse(txt)
+  const after = walk(before)
+  // Only rewrite a file whose content changed; a file with no game states keeps its formatting.
+  if (JSON.stringify(after) !== JSON.stringify(before)) { fs.writeFileSync(dir + f, JSON.stringify(after, null, 2) + '\n'); console.log('updated', f) }
+}