Linux SDK local verification

Twenty source tests pass. Fresh installed wheels execute both the documented custom factory and an annotated-dataclass factory on macOS and actual offline Linux. Discovery, display.set acknowledgment and reported state are checked through the local authenticated gateway. Installed suites pass15cases;5optional source-gateway tests are skipped there because the separate installed transport verifier covers onboarding.

This is software simulation. Physical peripherals, systemd lifecycle, actual Grok and independent human reproduction remain pending. Setup: development guide.