[Bug] Incorrect Italian verb conjugation of English loanwords with geminated consonants

Bug Description
Bug (linguistico, italiano): Claude scrive l'anglicismo "to merge" come "merggiare / merggiata" (doppia g). La fonotassi italiana non ammette una consonante geminata dopo un'altra consonante: la forma corretta è "mergiare / mergiata" (una g sola). Osservato in Claude Code (modello Fable 5 / Opus) scrivendo prosa in italiano. Atteso: "mergiata". Ottenuto: "merggiata". Stesso schema atteso per altri verbi simili.

Environment Info

• Platform: linux
• Terminal: vscode
• Version: 2.1.173
• Feedback ID: 101f30ac-7d26-4157-af44-9fdf0cbf304f

Errors

[{"error":"Error: 404 {\"type\":\"error\",\"error\":{\"type\":\"not_found_error\",\"message\":\"Claude Fable 5 is not available. Please use Opus 4.8. Learn more: https://www.anthropic.com/news/fable-mythos-access\"},\"request_id\":\"req_011Cc3Jbn7moRf1fBtnPgfZn\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:12:66109)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:52:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-06-14T14:24:01.709Z"}]