1.0.9

feat: sync bundled UI from pathforge-tech, bump to 1.0.9

Brings the desktop build's copy of the web UI up to pathforge-tech 0fe1a63c,
which covers everything shipped to the web since 86550c1c. The most visible
changes:

  - Zen mode is a 3D study that is also a simplified dashboard. Today, the
    college list, progress, documents, news and the weekly check-in are
    objects in the room, alongside the focus timer, plan, sound and a
    breathing break. It runs at 55-60 fps on an integrated Intel GPU.
  - Test Prep is open for SAT, PSAT, ACT, PreACT and CLT, in the Other menu.
    Today, Focus and Goals are removed from Routine.
  - The journey's dream college has been rebuilt, with a campus fly-in, a
    camera dive into each stage, and a larger stage popup.
  - Page-shaped loading skeletons site-wide, and an interactive 404.
  - Every country is covered, along with the world's universities and high
    schools.

src/ is taken wholesale from pathforge-tech (none removed). The desktop delta
is re-applied to App.tsx and nothing else: the isDesktop and UpdateNotifier
imports, the lazy DesktopWelcome route, the LandingRoute short-circuit to the
Welcome screen, and the UpdateNotifier mount.

vite.config.ts is taken from pathforge-tech, with the desktop-prefixed
__APP_BUILD__ stamp re-applied. This brings in the three-chunk rule that
fixed the blank signed-in pages on the web (a vendor <-> three import cycle);
without it this build would blank in the same way. tailwind.config.ts is
identical.

public/ gains what the synced tree references: zen/ (the study's models and
textures), avatars/, data/, the Geist Mono font and two landing photos.

Verified:
  - `npm run typecheck` clean.
  - `npm run build:web` succeeds, and vendor imports only react-core.
  - Zen smoke-tested on the built bundle in headless Chrome: the room loads,
    stations open, and it holds 60 fps.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>