Laptop device-detection state reference

Enumeration creates a representation

A laptop bus, embedded controller, or platform firmware can expose enough information for host software to represent a device. Enumeration is a discovery and identity boundary; it does not mean that a function-specific package is selected or active.

Internal devices have varied paths

A touchpad, keyboard, audio codec, wireless adapter, or sensor can be reached through different platform interfaces. Firmware tables and embedded controllers may contribute to identity. A missing high-level interface should not be read as proof that physical hardware is absent.

Matching follows identity

Once a device is represented, package declarations can be compared with its identifiers, architecture, platform, class, and requirements. A missing match is a package relationship state, distinct from enumeration and distinct from runtime activation.

Interface exposure is later

A device can be enumerated and matched before a host interface, endpoint, or service is exposed. The interface may have its own status and lifecycle. A state reference keeps each transition visible instead of using one status label for all of them.

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