A Stores section (rail, under Games; Setup › Stores gate) with each store's sign-in,
library, storefront shelves and a download queue. Each store has two tabs, Store and
Library, and Library filters to All or Installed; libraries open from a saved copy
and refresh in the background, with install sizes on every card. Games install to internal storage,
or a card chosen at Install time, and are registered in the Steam client as non-Steam
games, so they launch through Steam and droiddeck-proton from either the front end or
the client.
- Downloads: GOG, Epic and Amazon engines in Rust (app/src/main/rust/stores, built by
cargo-ndk, nothing compiled in the tree). One adaptive fetch core with a latency
brake, stalled-host handoff and every CDN a store offers. Per-stage progress,
pause/resume, two-step cancel that deletes, failed downloads kept for retry, a
foreground service with Wi-Fi and wake locks and notification controls.
- Games tab: store source chips (Steam, GOG, Epic, Amazon, Custom) and store art.
- Epic: per-launch exchange code from the app and from Steam's Play button,
"Epic sign-in (EOS)", "Launch offline", and a game's web links opened in Android's
browser for EOS consent. The EOS overlay crashed games and is left out.
- Cloud saves (GOG, Epic): pulled before launch, pushed after the game or the session
ends, no upload before a first download, conflicts never overwritten, backups both
ways.
- Logs: every store line redacted; the engine log goes to daily files.
