The working photo and every knob the workspace holds now survive a reload,
for guests as much as for signed-in users:
- engine/session.ts: the knobs go to localStorage (rc.studio.v1) as small
JSON; the photo goes to IndexedDB, because a 12MP JPEG does not fit in
localStorage. Both fail soft (private mode, quota) — the studio still works,
it just forgets.
- App.tsx: state seeds from the stored snapshot synchronously, so the first
paint already holds the user's settings; the boot effect pulls the photo
back and adopts it with keepGeo, so the restored params are not clobbered
by the photo's own EXIF.
Recipes a guest creates with SAVE RECIPE stay session-only, as asked — they
are still gone on reload (create-test asserts it).
3dtours
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