Local Edge Agent (sidecar, tunnel cloud)

Demone Rust locale, approccio sidecar (non MitM inline — vedi spec 2026-08-06), tunnel verso il cloud.

• kernel CDC: 19 test puri
• tunnel gRPC mTLS + writer prezzi (link_it in-memory)

• ✓kx-core kernel CDC (eventi, watermark, dedup)
• ✓outbox-poller → Postgres (kx_eventi)
• ✓tunnel gRPC mTLS (kx-proto + kx-link)
• ✓writer prezzi (comandi tipizzati)
• ◐installatore DDL outbox su DB target
• ○writer giacenze/documenti (Fase 2)