Defines the `Discover` interface with methods `Devices()`, `Mounts()`, `Hooks()`, `EnvVars()`. Provides combinators `Merge`, `FirstValid`, `WithCache`, and `Filter` that wrap discoverers to compose complex discovery logic. This is a clean, reusable pattern for system resource discovery that can be adapted to any hardware introspection task.

Defines the `Locator` interface for locating files, libraries, and executables. The factory `New` creates locators with optional root filesystem paths, symlink resolution, and ldcache integration. `First` and `AsUnique` combinators implement chain-of-responsibility for fallback lookups. This is a reusable abstraction for file system traversal in container or host contexts.

Provides a `LoadFirst` function that accepts multiple `Source` implementations (file, string, map, CLI command) and returns the first successfully loaded TOML config. Each source implements the `Load` interface. This pattern is self-contained and reusable for any application that needs flexible configuration loading from multiple origins.

Implements CDI spec transformers that adjust device and mount paths to different root contexts (driver-root, host-root, container-root). Uses a functional options pattern to compose transformers. The `Transformer` interface and `Merge` combinator allow chaining multiple transformations. This is a reusable pattern for manipulating CDI specifications or similar container device descriptions.

Converts discovered devices, mounts, hooks, and environment variables into CDI `ContainerEdits`. Handles device node creation with proper major/minor numbers, group IDs, and file permissions. The `WithNoAdditionalGIDs` option provides control over group membership. This is a self-contained utility for generating CDI edits from any discovery source.