nx_reader_tile.nx

nx_reader_tile.nx -- SOVEREIGN tiled-pyramid emitter (reader census gap: DZI/IIIF-class smooth mobile zoom of huge manga/document scans). Given one page image (JPEG or PNG), emits a Deep-Zoom-style pyramid: for each level 0..maxlevel (level maxlevel = full res, each lower level halves) it box-downscales the page and cuts it into fixed T x T JPEG tiles. A mobile viewer then fetches ONLY the tiles visible at the current zoom = smooth zoom without downloading the whole 8000px scan. Composes PROVEN sovereign organs (DRY, zero 3rd-party): universal decode nx_img_bytes_to_rgb (JPEG+PNG) -> nx_img_scale_bilinear -> jcw_write_color. KEY: each level's dims are rounded to a multiple of 8 and T is a multiple of 8, so EVERY tile (incl right/bottom edges) is a multiple of 8 -> the baseline JPEG encoder handles all tiles. This is a LIB (no main) so nx_reader_tile_gate exercises rt_emit directly (nx_mgmt_upload lib+gate split). Fork-per-page in the daemon -> the per-tile mmaps die with the child. license_tier: ORIGINAL