Silurus/ooxml: Pixel-faithful Office documents, rendered in the browser

The excitement stopped at the marketing. Multiple people tried medium to complex real documents and said the output was nowhere near pixel-faithful. Reported failures included missing slide backgrounds, broken bullet images, inverted text colors, and complete failure on internal compliance test files. The consensus landed on a narrower read: as a readable in-browser renderer, it is impressive, especially for XLSX. As a faithful substitute for Microsoft Office, it is not close. A lot of the reaction was also about the repo openly saying the code was generated entirely by Claude. Some treated that as a useful disclosure, others as a warning label, and the poor results made the criticism land harder. Still, a few people pushed back on the reflexive dismissal. Their point was practical: a rough but useful viewer might only exist at all because LLM-assisted development made it cheap to build, and for preview workflows that can be enough. The more grounded framing was that exact Office rendering is hard even for Microsoft across platforms, so the real bar is not "perfect" but whether this can cover enough common cases to replace heavier server-side conversions in some products.