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Each vendor's system presets are serialized into a <vendor>.opc cache that the app loads instead of parsing the profile JSONs, falling back to the parse whenever no cache covers what is installed. Shipped builds carry the caches instead of the raw profiles, installing and updating treat a vendor's cache as its installation, and the setup wizard loads through the same path. Per-platform scripts and CI generate the caches at build time; tests and a design doc cover the format and its validation.