V2 preflight check

[jmikedupont2]

I would like a CLI tool to list the current chars and do a preflight check for them,

1. check if the llm is working (write one text)
2. check if the twitter login works (login and write a tweet)
3. check if the discord is working
4. check if all the plugins are loading and needed

Currently the start command takes some time to check everything and generate a tweet so it would be great
to check everything.

[github-actions]

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