- on successful login, kick off scraping of logged-in user, their followees, and only-followed home timeline
- `--auto-open` flag now opens `/login` instead of home page
- add HTMX spinner for login page
- provide toast error notification if login is challenged (e.g., 2FA)
- rendering helpers moved to their own file (separate from response helpers)
- create a unified render helper instead of "buffered_render_basic_X" and "buffered_render_tweet_X"
- this helper takes 2 data objects: one with global data (tweet trove, logged in user, etc) and one page-specific
- this lets us remove the disgusting interface type
- modify the User List template to use UserIDs indexing into a global data object instead of a list of Users
