Does the difference in the recitation of Warsh from Hafs negate the preservation of the Qur’an?

One must distinguish between "Qira'ah" (recitation/reading) and "Riwayah" (narration). Warsh and Hafs are masters of narration, not recitation. They are two narrations of two different recitations, and there is no contradiction in meaning between them or between any other narrations. These recitations are an established Sunnah, confirmed by continuous transmission (mutawatir), and they are variant readings stemming from the single 'harf' (mode of recitation/variant reading) upon which Muslims agreed when Uthman (may Allah be pleased with him) compiled the Qur'an. The differences between the recitations are in form, not in the essence of the meaning. It is a difference of diversity and complementarity, not contradiction, revealing aspects of the Qur'an's miraculous nature, the comprehensiveness of its meanings, and the ease of its recitation. The multiplicity of recitations was by divine revelation for a wisdom, not due to corruption, and it does not lead to confusion or contradiction; rather, their meanings are consistent, and their objectives are in harmony. For example, the difference between reciting "yakdhibun" (with an 'a' vowel) and "yukadhdhibun" (with a 'u' vowel) in Surat Al-Baqarah does not contradict each other; rather, each describes an aspect of the hypocrites' characteristics: lying and belying, and both are true. Scholars have laid down precise and strict conditions for accepting Qur'anic narrations, including the requirement of continuous transmission (tawatur) for every letter and verse, which emphasizes Allah's preservation of His Book.