v0.0.6

• The app answers only this Mac. It refuses a request with a foreign Host, a cross-site request, and a change from a foreign Origin, so a web page cannot start a session or set your key.
• Exercises that a model writes are checked first. Their tests run with safe builtins and a time limit.
• If the lesson model fails, the question still closes, the miss counts one time, and you see the model answer.
• "Sure?" starts with no step picked. With no confidence given, a clean pass is solid and a wrong answer is a gap, so a spoken answer can count as solid.
• Slugs read Indic scripts: संधि gives samdhi. C, C++ and C# get different slugs. Learning.reslug moves concepts with old slugs, and every link to them.
• A JSON reply with a code fence inside a string no longer fails.
• Settings refuses an API key with a newline or a space, and says why.
• The index tick works with no ramabana history yet, and reads only notebooks that changed.
• /a and /ans answer in ramabana, and /learn stays on the newest agent.