2.9.4

Yet another quick release fixing a few bugs: fix composer canvas codeblock, update copilot-plus-small (it hasn't been stable recently, should be stable now after a complete reindex)

PRs

• #1621 Exclude copilot folders from indexing by default @logancyang
• #1620 Disallow file types in context @logancyang
• #1619 Fix copilot-plus-small @logancyang
• #1617 Fix composer canvas codeblock @wenzhengjiang

Troubleshoot

• If you find models missing in any model table or dropdown, go to Copilot settings -> Models tab, find "Refresh Built-in Models" and click it. If it doesn't help, please report back!
• For @Believer and @poweruser who are on a preview version, now you can use BRAT to install official versions as well!