Sidekick

Use sidekick doctor ENGINE, then inspect native control evidence with sidekick capabilities ENGINE --model MODEL --json before delegating. Start work with sidekick spawn ENGINE NAME --dir PATH -- "PROMPT"; use separate control axes (--model, --provider, --transport, --effort, --permission, --sandbox, --workspace-trust) instead of treating legacy --mode as a universal semantic. Start one background sidekick wait NAME... --all --json for a batch, continue independent work, and harvest with sidekick result NAME --json. Check sidekick status --json and terminal exitCode; status shows active runs plus bounded recent history unless --all is supplied. Use sidekick clean --dry-run before retention deletion, especially when state diagnostics report legacy or unreadable directories; use sidekick migrate --json to preview legacy conversion and require explicit --apply before mutation. Add --quarantine for unsupported state and migrate NAME --restore --apply to recover a quarantined entry. Continue with sidekick send NAME -- "FOLLOW-UP"; send accepts no control override because persisted controls are immutable. Use sidekick adopt for an existing session, sidekick tail for live output, sidekick cancel for a resumable full-tree stop, and sidekick clean for terminal-run retention. Install harness guidance with sidekick skill install HARNESS.

Each new run records requested, applied, and effective observations. An argv flag is not evidence of provider-reported effective state. Unsupported, malformed, model-dependent-unverified, or runtime-version-mismatched explicit controls fail closed with exit 2 before prompt/cwd/discovery/store/worker side effects. Codex effort is value-gated for any model (minimal|low|medium|high|xhigh|max). Hermes has no public per-run effort flag; do not invent config-home hacks. Devin family slug glm-5.2 and variant UID glm-5-2 are distinct; never silently alias them. normal is the current Devin default alias for native auto; do not use --mode high as an effort setting.

For adversarial review, use a read-only reviewer prompt with explicit no-edit/no-commit/no-push constraints and a catalog-probed model id. For Codex high-effort reviews prefer --effort max or xhigh with an explicit model. For Devin GLM-5.2 High use the currently evidenced model id from sidekick doctor devin / the live catalog (family slug glm-5.2 and variant UID glm-5-2 are distinct; never invent an alias). Require sidekick wait, sidekick result --json, exit code, and independent diff/test verification before accepting a review.

Do not concurrently spawn workers with the same --dir. Harness session discovery and workspace state can be directory-scoped, causing lock contention, accidental serialization, or overlapping edits. For real parallelism, give each worker a separate git worktree and pass that worktree as --dir. If separate worktrees are unavailable or tasks must share a working tree, run one worker at a time and reuse its session with sidekick send.