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feat(wire-protocol): Phase 2 Rust core architecture, connection pooling, virtual shadow DB & wire masking - #16
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…ng, virtual shadow database & wire masking - Crates / Rust Core: * crates/dbshield-core with zero-GC PostgreSQL Protocol 3.0 & MySQL wire parsers * High-concurrency async connection pooling (crates/dbshield-core/src/pool.rs) * Protocol-level copy-on-write virtual shadow database (crates/dbshield-core/src/shadow.rs) * Wire-level dynamic PII masking & format-preserving pseudonymization (crates/dbshield-core/src/masking.rs) - TypeScript Runtime Parity: * HighConcurrencyConnectionPool with bounded queues, heartbeat healthchecks, and sub-millisecond reuse * VirtualShadowDatabase copy-on-write simulation layer intercepting destructive queries (DROP TABLE, unconstrained DELETE) safely * ProtocolWireMasker for streaming PII field masking before LLM context ingestion - Unit Tests: * tests/phase2-wire-engine.test.ts verifying pooling, shadow isolation, and pseudonymization
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Implements Phase 2 DBShield milestones: high-concurrency wire protocol parser, connection pooling, ephemeral copy-on-write virtual shadow database, and protocol-level dynamic PII masking.