`app/` should hold route segments only. Game logic and the player-card
component are imported by both routes, so they belong outside:
app/loto-game-logic.ts -> lib/game-logic.ts
app/loto-player-board.tsx -> components/player-board.tsx
Imports use the existing @/* alias. Drops the redundant `loto-` prefix.
Also fixes the package name from the scaffold default.
Adds the standard ./docs/ structure (overview, codebase summary,
architecture, code standards, design guidelines, deployment guide,
roadmap) and the code-review report under ./plans/reports/.
README now points at the docs and covers the codeserver dev profile.