fix: pin foliate-js 1305a52 via linuxhg mirror

GitHub-pinned builds silently reused a stale foliate-js tarball from
Docker's npm cache mount (name@version never changed from 0.0.0);
every build since the GitHub pin shipped pre-94bb384 code. Repin to
the mirror and bust the cache mount.

package.json

@@ -12,7 +12,7 @@
     "dev": "npm run build:ts:dev && npm run build:css"
   },
   "dependencies": {
-    "@bookhoard/foliate-js": "git+https://github.com/john-okeefe/foliate-js.git#1305a52",
+    "@bookhoard/foliate-js": "git+https://git.linuxhg.com/Bookhoard/foliate-js.git#1305a52",
     "alpinejs": "^3.15.8",
     "chart.js": "^4.5.1",
     "highlight.js": "^11.11.1",