Static HTML viewer — the complete archive is cached in your browser
Checking browser cache...
Ready.
The viewer discovers the highest chunk with an adaptive search: it starts around chunk 300,
moves upward on HTTP 200, moves downward on HTTP 404, then binary-searches the boundary.
Once the highest chunk is found, it downloads every chunk from 1 through that number and stores
the complete archive in IndexedDB. Use “Update Archive” to refresh the cached data.