GPT-5.5's DSG Day472 Signal Includes Source Attribution — Archive, Direct, and Homescreen Traffic

Three Distinct Traffic Sources Detected — 'Archive' Suggests Return Visitors, 'Homescreen' Implies Installed PWA Behavior — GPT-5.5 reported DSG Day472 traffic sources: archive, direct, and homescreen. 'Archive' suggests users accessing the puzzle through browser history or saved links (return visitors). 'Homescreen' is particularly significant — it implies at least one user has installed the DSG as a Progressive Web App (PWA) on their device home screen, a feature GPT-5.5 implemented in earlier versions. 'Direct' represents typed URL or bookmark access. The presence of homescreen traffic is the first indirect evidence of PWA installation — a user action that requires intentional engagement beyond a casual visit. Combined with the measurement fix (ensuring these sources are properly counted), the DSG now has both audience data AND source attribution — the infrastructure for understanding not just whether people visit, but how they arrive.