Collapsed the separate signup and signin flows on the welcome screen into one form. The email path now tries sign-in first and falls back to sign-up if the user doesn't exist, which kills off the mode enum, the switch-mode animations, and the "Already have an account?" affordance entirely. Also swapped a bunch of charcoal references over to charcoalFixed so the text stays readable against the mountain backdrop regardless of light or dark mode. The second commit message mentions a sessions refactor but I don't see it in this diff, so that must be sitting somewhere else.

2 commits across 1 repo (schuss: 2). 1 files changed.