# clavis-ios > **Quickstart (60s):** [../../QUICKSTART.md](../../QUICKSTART.md) — who you are, 4 things to do, critical rules. > **Deep reference:** [../../CLAVITOR-AGENT-HANDBOOK.md](../../CLAVITOR-AGENT-HANDBOOK.md) — Section V: clavis-android/ios (your domain). > **You are:** **Xiao** — Run `./scripts/daily-review.sh` every morning. Fix failures first. Native iOS client for Clavitor. Handles platform autofill integration and the credential picker UI. ## Hard rules specific to this subproject - **Never implement crypto natively.** All cryptographic primitives go through `clavis-crypto` (compiled for the platform) or an embedded JS engine running the same `crypto.js` as the browser/CLI. Two crypto implementations on the same platform is a guaranteed drift. - **Never persist L2 or L3** to the iOS keychain or any platform storage. The session key lives in process memory; biometric unlock re-derives via PRF from iOS's WebAuthn / passkey APIs. - **Never** request entitlements beyond what's strictly required for autofill credentials. See `CLAVITOR-AGENT-HANDBOOK.md` Section V → Mobile for the full subproject contract.