Outline a novel structure that interweaves three distinct timelines: the construction of a Gothic cathedral in the 12th century, the siege of that same cathedral during a revolution in the 18th century, and a cyberpunk heist taking place in its digital twin simulation in the 22nd century. Define the specific thematic through-line (e.g., 'faith vs. progress') that connects these eras. Create a chapter-by-chapter beat sheet where transitions between timelines are triggered by specific sensory motifs or recurring phrases, ensuring non-linear causality remains coherent to the reader.