Previously, cli.py ran in <repo-root>/files. However, our relative
paths assume the working directory is <repo-root>. This resulted in
sanitize.render_emoji L153 to improperly return false when checking
for the presence of 'files/assets/images/emojis/{emoji}.webp',
leading to emojis in notifications sent by cli.py-invoked tasks to
not be rendered to HTML.
Prior to this comment, the every-1d cron.py command was broken due
to lack of proper stats import. However, while refactoring this, it
was convenient to move other recurring tasks that had been stuffed in
odd places--not least `stats(...)`--into the new cron system. This
entailed a number of refactorings of other things.
1. Move stats(...) from static.py to helpers/stats.py.
2. Move hole inactivity purge task from stats(...) to routes/subs.py.
3. Move bot award timer checks from stats(...) to helpers/awards.py.
4. Unify award timer logic formerly in routes/front.py into the new
helpers/awards.py.
Adding an empty __init__.py, the imports-only cli.py, and setting
FLASK_APP in the environment are enough to get the `flask` command
to work. This will enable future changes, including database
migrations.
The proximate reason for the fix is to add a `flask cron` command
to run scheduled tasks within the application from cron. Specifically,
the lottery should be run from cron.
Snakes