Resolve Replied Greptile Comments

Resolve all Greptile bot review comment threads on a GitHub PR that already have human replies. This avoids cluttering the PR conversation view with already-addressed bot feedback.

How it works

1. Parse the PR URL or number from $ARGUMENTS to extract owner, repo, and pr_number
2. Fetch all review threads via GitHub GraphQL API
3. Identify threads started by greptile-apps that have reply comments (i.e., already addressed)
4. Resolve those threads, skipping any already resolved
5. Report what was done

Step 1: Parse PR reference

Extract owner, repo, and PR number from $ARGUMENTS. Supports formats:

• Full URL: https://github.com/OWNER/REPO/pull/NUMBER
• Short: OWNER/REPO#NUMBER
• Number only: NUMBER (requires --repo flag or defaults to current repo via gh repo view)