Add player_name column to games (migration included), with regex-based
validation and anti-abuse sanitization. New /scoreboard page shows recent
games from localStorage, popular categories with play counts, and top-10
per-category leaderboards sorted by completion time. Also includes
two-click reverse word matching, base URL prefix support for reverse-proxy
hosting, BasePageHandler refactoring, themed table CSS for all 5 themes,
and comprehensive test coverage for player names and scoreboard API.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Recreates base.html and main.html templates (lost during reset).
Adds game.html with setup UI (category picker, board size slider),
interactive grid table, word list sidebar, text input, click-to-select,
timer, and completion banner. Adds game.js for all frontend logic.
Extends theme.css with game grid and form control styles using the
indigo/coral palette.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
