Player guide covers the two supported hardware paths (Lighthouse and Quest),
the SteamVR runtime install that needs no Steam account or client, and which
titles work, including the ones that do not: Half-Life Alyx and The Lab need
a real SteamVR backend, No Man's Sky VR is broken through the translation
layer, and VRChat/Rec Room/Zenith depend on their companies' servers.
Operator reference covers the architecture, the routing decision tree, why
per-process XR_RUNTIME_JSON is preferred over the machine-wide registry
switch, why OpenVR routing uses a per-game DLL swap, and the staging/import
ordering constraint.
Both state plainly that only runtime startup has been validated: tracking and
per-title rendering are unverified on real hardware.
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