RuView v0.9.3 Vendor Providers Beta 1

This beta implements ADR-270 as a capability-safe Rust provider program across
all ten researched vendors.

Included

• Shared VendorRfProvider contract with bounded event validation.
• Origin AI, Plume/OpenSync, Mist/Juniper, NETGEAR Insight, Electric Imp,
  RF Solutions, Luma/OpenWrt and Google Nest contract adapters.
• Explicit fail-closed Linksys (Unsupported) and Wifigarden
  (ContractRequired) providers.
• Deterministic vendor-rf-sim JSONL/UDP fixtures for defined contracts.
• Provider registry, descriptors, latest-event REST endpoints and WebSocket
  summaries through the sensing server.

Boundary

This release implements and validates software contracts. It does not claim
vendor-cloud credentials, commercial SDK rights, physical hardware validation,
or complex CSI support for telemetry-only providers.