Document stall and rollback handling

Stalls: partial counter freezes, half dips made up next day, and two rollbacks (May 2025, June 2026) no longer counted as downloads

Daily update 2026-10-04

Daily update: datasets 2026-10-04, spaces 2026-10-04

Document datasets, Spaces and usage files

Add datasets (daily downloads) and Spaces (daily likes), with who uses what

Spread days when the Hub's download counters stood still

Link the site's own domain

Link the Space at its new address

hub_series: one row per calendar day so sums stay exact across snapshot gaps

Daily update 2026-10-03

Initial build: 2024-07-29 to 2026-10-02

initial commit