Type Alias BamRead 

pub type BamRead = (String, Vec<u8>, String, usize, usize, u8);

A single BAM read after CIGAR-aware extraction.

The tuple fields are (name, sequence, quality_string, ref_start, ref_end, haplotype).

• name — read name from the BAM record.
• sequence — the extracted subsequence as raw bytes (ASCII nucleotides).
• quality_string — Phred+33 encoded quality string for the extracted slice.
• ref_start / ref_end — the reference coordinates (0-based, matching BED) actually covered by the extracted slice (may differ from the requested BED coordinates when the alignment does not perfectly span the region boundary).
• haplotype — value of the HP aux tag; 0 means the tag was absent (unphased).