/**
 * Vocabulary loader for PaddleOCR's `inference.yml` files.
 *
 * PaddleOCR's CTCLabelDecode builds the character list as:
 *   ["blank"] + character_dict + [" "]  (when use_space_char=True)
 *
 * The model output has 18710 classes:
 *   index 0      = blank (CTC blank)
 *   index 1..N   = character_dict entries
 *   index N+1    = space
 *
 * So vocab[i] maps model output index i to the corresponding character.
 */
export declare function loadVocab(url: string): Promise<string[]>;
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