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>
Defines data models (Category, CategoryWord, Game, Word), board
factory, REST API endpoints, and dual-input frontend design for the
word search game.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
