Stacked PRs

Remote agents create all changes as stacked PRs that makes it easy to update incrementally without needing to redo the whole stack. These remote agents leverage the stacked PR CLI to perform these operations, you can also checkout an entire stack and make updates using the same CLI.

PR #1: Foundation Changes
  └─ PR #2: Core Implementation
      └─ PR #3: Test Updates
          └─ PR #4: Documentation