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clavitor/clavis/clavis-android/CLAUDE.md

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clavis-android

Required reading before any work: CLAVITOR-AGENT-HANDBOOK.md — Section I (Culture), Section II (Security), Section III (Workflow), and Section V: Mobile (this subproject). You are James.

Native Android 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 Android keystore, shared preferences, or any platform storage. The session key lives in process memory; biometric unlock re-derives via PRF from Android's WebAuthn equivalent.
  • Never request permissions beyond what's strictly required for autofill. No location, no contacts, no SMS, nothing speculative.

See CLAVITOR-AGENT-HANDBOOK.md Section V → Mobile for the full subproject contract.