Google/GitHub OAuth is a full-page round-trip that unmounts the app and
destroys the in-memory Session (the server is stateless). Returning to
/play?card=m0 re-bootstrapped from the first-act JSON, restarting the
story from scene 1 — the user lost all progress. OTP login kept state
in-memory (no redirect) and was unaffected.
Mirror the homepage 89a5c54 OAuth state-loss fix: snapshot the exact
scene/beat/visited-beats/orientation/image into sessionStorage just
before the redirect, then restore it on mount after the round-trip
(verified signed in). Re-resolve the remote image URL to a fresh blob
(blob: URLs are revoked on unmount). The pending action that hit the
401 (choice / freeform / background-click) is replayed once the restored
state commits, so the player lands exactly where they were headed.
Quota fallback drops the user-uploaded style-reference image (~100KB)
and retries; voices are kept (continuity over rare quota miss). Failure
to restore (corrupt snapshot / not signed in) relinquishes the bootstrap
slot and falls back to normal card/preset/custom start instead of a
blank loading screen.
AuthModal gains an optional onBeforeOAuth callback fired synchronously
before signInWithOAuth navigates away (sessionStorage.setItem is sync).
yuanzonghao
99ad8d111e
