chore: remove TWITTER_COOKIES env var

[ChristopherTrimboli]

Relates to:

No issue ticket, just a improvement, ease of setup change I noticed.

Risks

LOW - Twitter may not login? But tested with clearing cache and cached, working great.

Background

What does this PR do?

This PR removes the .env variable TWITTER_COOKIES and simply uses twitterScraper to manage cookies on login better from cache.

It also removes the docs / readme step where user has to provide the JSON array of TWITTER_COOKIES.

Side win: the looping try-catch while loop is cleaner to read, deleted many lines of code in simpler implementation for twitter auth.

What kind of change is this?

Improvements

Why are we doing this? Any context or related work?

TWITTER_COOKIES env var is an added complexity not required, users have to go searching in dev-tools console document.cookie and rearrange their JSON and add to ENV. But, twitter-scraper client has support for login + fetch current cookies on it's own. It is a redundant ENV setup that can be removed to simplify the twitter agent setup process for all users.

I recently implemented twitter-scapper-client in my own custom agent and never had todo this ENV setup, I saw it as a EZ win for Eliza community to port over.

Documentation changes needed?

If a docs change is needed: I have updated the documentation accordingly.

I have removed the TWITTER_COOKIES docs sections, full deletion, no longer needed.

Please show how you tested the PR. This will really help if the PR needs to be retested, and probably help the PR get merged quicker.

I also ran:

return await this.runtime.cacheManager.delete(
    `twitter/${username}/cookies`
);

To delete the cookies from cache manually to verify my code was working.

Testing

Where should a reviewer start?

Remove TWITTER_COOKIES from .env and see if Twitter agent boots correctly and works from fresh cache and already cached.

Detailed testing steps

None, automated tests are fine.

Deploy Notes

Remove TWITTER_COOKIES from any CI / CD and .env test runners.

Discord username

cjft

[monilpat]

LGTM - thanks for consolidating this on the client side :)

[touhonoob]

Getting DenyLoginSubtask with the new login method

 ["⛔ Failed to login to Twitter. Retrying... (0 attempts left)"] 

 ["⛔ Max retries reached. Exiting login process."] 

[adamcanray]

Getting DenyLoginSubtask with the new login method

 ["⛔ Failed to login to Twitter. Retrying... (0 attempts left)"] 

 ["⛔ Max retries reached. Exiting login process."] 

+1

[daniel-farina]

I think we should revert this as login with cookies is the only method that works currently for many users. On a fresh installation login with username/pw fails. Once I revert this PR and add cookies everything works.

cc: @monilpat @lalalune