build(deps): bump documents.js to 1.99.12

Triggered instantly via repository_dispatch when documents.js published its own release,
rather than waiting for the next scheduled Dependabot scan.

Author: github-actions[bot]

package.json

@@ -88,7 +88,7 @@
   "packageManager": "pnpm@11.6.0",
   "dependencies": {
     "commander": "^15.0.0",
-    "documents.js": "^1.99.7",
+    "documents.js": "^1.99.12",
     "ink": "^7.1.1",
     "ink-text-input": "^6.0.0",
     "react": "^19.2.8"