v1.19.3

What's changed since v1.18.0

• LibreTranslate: new API key field in Settings. The official hosted instance requires a key; leave it blank for a self-hosted instance that allows anonymous requests.
• Signed-out use of AI tiers: after the first sign-in-required response, the extension stops the remaining requests on the page, shows a sign-in prompt and falls back to the free Fast engine.
• Quota messages: when a usage limit is reached, the extension shows a message in 13 languages.