feat: add delete command for deleting tweets

[chris-sev]

For adding deleting tweets. Not sure if we want this in the CLI. But with great power comes... hilarious tweets?

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This PR adds a bird delete command for deleting tweets.

Changes

• Add DeleteTweet to fallback query IDs (using VaenaVgh5q5ih7kvyVjgtg)
• Add deleteTweet method to TwitterClient posting mixin
• Create new delete.ts command file
• Register delete command in CLI program

Usage

# Delete a single tweet by ID
bird delete 1234567890123456789

# Delete a tweet by URL
bird delete https://x.com/user/status/1234567890123456789

# Delete multiple tweets at once
bird delete 111111111 222222222 333333333

# JSON output
bird delete 1234567890123456789 --json

Implementation

The implementation follows the same patterns as other mutation commands (unbookmark, etc.):

• Uses GraphQL DeleteTweet mutation
• Handles 404s by refreshing query IDs and retrying
• Falls back to generic GraphQL endpoint on persistent 404s
• Uses tweet-specific referer header (matches other mutations)
• Verifies deletion was acknowledged before returning success
• Returns success/error status for each tweet
• Supports --json output flag
• Exits with code 1 if any deletion fails

All existing tests pass. 🎉

[chatgpt-codex-connector]

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