Hotfixes etc.

• Cmd-L now properly focuses the chat again

• Advanced context controls only show up if you have indexed your codebase

Fixes a bug that resulted in green-lines staying around after cancelling CMD-K.

This build includes:

• More control of context building abilities for codebase-wide chat

• A better flow for getting CMD-k to produce code with no linter errors (you should see a "Try lint-fix" button when relevant)

• Some UI/UX tweaks to CMD-K

• Bug fixes