@maschinenlesbar.org/openka-cli
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    Variable TiersConst

    Tiers: readonly ["structured", "text_layer", "ocr"]

    The deterministic path that produced a record.

    structured — API / OParl / clean XML export: map fields directly. text_layer — PDF with a real text layer: parse text + frozen layout rules. ocr — scanned / image-only PDF: pinned perceptual model, then parse.