# CHRONOGRID P2P - AI CONTEXT & ARCHITECTURAL MANDATES

1. DATA SOVEREIGNTY & LOCAL-FIRST MANDATE:
   - Never generate code that transmits data to third-party cloud endpoints or SaaS providers.
   - All network synchronization MUST utilize `crates/chronogrid_net` over libp2p / QUIC with Noise XK encryption.

2. TECH STACK BOUNDARIES:
   - Presentation: Flutter (Win32 for Windows, GTK3 for Linux, Android NDK).
   - Core Logic & Storage: Rust (`crates/chronogrid_core`) with SQLCipher & Automerge CRDT.
   - FFI Bridge: Use `flutter_rust_bridge` C-ABI generation ONLY.

3. SINGLE SOURCE OF TRUTH:
   - Prior to modifying data structures, consult `docs/API_CONTRACTS/schema.sql` and `docs/ARCHITECTURE/01-OSAD-system-architecture.md`.
   - Update documentation in `/docs` concurrently with code changes.