# The six per-line signals, cheap, deterministic, engine-agnostic.
from docintel.parsing.pdf.toc.body_structure import (
    enrich_line_df_with_style,
    score_font_size_ratio,
    score_is_bold,
    score_has_numeric_prefix,
    score_is_short,
    score_is_left_aligned,
    score_has_blank_before,
)

line_df = enrich_line_df_with_style(line_df, span_df)

signals = {
    "font_size_ratio":   score_font_size_ratio(line_df),
    "is_bold":           score_is_bold(line_df),
    "has_numeric_prefix":score_has_numeric_prefix(line_df),
    "is_short":          score_is_short(line_df),
    "is_left_aligned":   score_is_left_aligned(line_df),
    "has_blank_before":  score_has_blank_before(line_df),
}