Workflows, instruction files, comparisons, and open questions. Each carries a status (open question, being tested, or established), and when a question gets answered, the same page becomes the answer.
18 methods
Codex is fast and overshoots; Claude is a pedantic reviewer. Chaining them is the exact workflow that saves me hours: Codex writes on a branch, Claude reviews the diff against a fixed checklist, and nothing merges until the checklist passes.
Run three or four agents against the same repo without them stomping each other's changes. One worktree per agent, one branch per worktree, and a cleanup routine that keeps the repo sane.
Agents read everything they can reach, including the .env you forgot about. Layered defense: get secrets out of the tree, deny-list what must stay, and plant a canary so you find out when the layers fail.
Claude Code can't see Xcode's build errors unless you hand them over. XcodeBuild MCP plus a formatter that strips the noise gives the agent a real edit-build-test loop for SwiftUI work — the difference between guessing and iterating.