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Architecture changes: - Extension connects directly to server (no local proxy/daemon) - Dual transport: WebSocket (real-time) + HTTP polling (fallback) - Server stores encrypted cookie blobs (E2E encrypted, server-blind) - Device registration with API token auth - Pairing records stored server-side for cross-device cookie access - Agent Skill API: AI agents get tokens to retrieve encrypted cookies with domain-level access control New modules: - src/relay/store.ts — encrypted cookie blob storage (LWW, per-device limits) - src/relay/tokens.ts — device registry, agent registry, pairing tracking - Protocol spec v2 with new types (EncryptedCookieBlob, AgentToken, etc.) 38 tests passing (crypto, pairing, conflict, full integration with HTTP polling, agent API, and WebSocket relay). Co-Authored-By: Paperclip <noreply@paperclip.ing>