PR Review Multi-Source

PR-aware code review orchestrator. Fetches PR metadata, collects existing review comments from all sources (CodeRabbit, human reviewers, CI), dispatches Ring's 10 specialized reviewer agents to evaluate both code and existing comments, and presents findings with source attribution.

Adapted from alexgarzao/optimus (optimus-pr-review).

Phase 0: Fetch PR Context

Step 0.1: Obtain PR URL

If the user provided a PR URL, use it directly.

If no URL was provided, attempt to find the PR for the current branch:

gh pr view --json url,number,title --jq '.url' 2>/dev/null