the goal: port the old discord showcase bot

what it does: save #project-showcase posts to your HMN user profile if you have your account linked

stuff we need to worry about:
- old posts from before you linked your account
- posts that come in while the bot is down
- what to do with posts if you unlink your account
- what to do with posts if you re-link your account
- what to do if you edit the original discord message
- what to do if you delete the original discord message
- the user's preferences re: saving content
    - we don't want to save content without the user's consent, especially since it may persist after they disable the integration
- manually adding content for various reasons
    - maybe a bug prevented something from saving
    - ryan used to post everything in #projects for some reason


real-time stuff:
- on new showcase message
    - always save the lightweight record
    - if we have permission, create a snippet
- on edit
    - re-save the lightweight record and content as if it was new
    - create snippet, unconditionally???? (bug??)
    - update snippet contents if the edit makes sense
- on delete
    - delete snippet if the user so desires
    - delete the message records


background stuff:
- watch mode
    - every five seconds
        - fetch all HMN users with Discord accounts
        - check if we have message records without content
        - if so, run a full scrape (no snippets)
    - every hour
        - run a full scrape, creating snippets
- scrape behavior
    - look at every message ever in the channel
    - do exactly what the real-time bot does on new messages (although maybe don't do snippets depending on context)