Clean up repo

[jakkdl]

Once we've transitioned over all the relevant data from the webflow version we should remove the backup/ directory, as well as the unused BMAD files in _bmad and .claude/commands.

[bryceerobertson]

Good idea, would you be up for owning this?

[jakkdl]

Sure 👍

[jakkdl]

We'll also want to cycle the credentials currently exposed in the backup dir.