4 hacks
Install the GitHub app and mention @claude in review comments so corrections become durable CLAUDE.md rules for every future session.
Use `claude --worktree` (or git worktrees) so multiple agents edit isolated checkouts without colliding.
Add the GitHub MCP server so Claude can cross-reference issues, PRs, and repo state without leaving the session.
Run `/batch` on large mechanical migrations so Claude decomposes work and spawns per-unit worktree agents with PRs.