Changelog

Remove obsolete footer links and enhance theme handling: deleted release-notes and changelog items from backend/includes/footer.php. Cleaned up api-doc.css (BOM/selector/spacing fixes), added dark-mode styles for Swagger UI, and normalized media query spacing. In frontend/js/theme-manager.js introduce DARK_THEMES, apply/remove a generic 'dark-mode' class when known dark themes are loaded or switched, and ensure body/ document classes are updated accordingly so external components (e.g. Swagger UI) follow the selected dark theme.

Add linting/formatting setup for JS, CSS and PHP: new eslint.config.js with frontend JS rules (browser/node/jquery globals, module + latest ECMAScript, 4-space indent, single quotes, semicolons, warn on unused vars, console allowed), .eslintignore and .stylelintignore to exclude node_modules/vendor/dist and minified files, and a php-cs-fixer.dist.php to run PSR12-based fixes across backend, frontend, includes and config (short array syntax, ordered imports, no unused imports, various spacing and PHPDoc rules). package.json was updated to include the linter devDependencies and package-lock.json regenerated.

Replace static copyright year with a dynamic placeholder (© 2025-{{year}} ...) across locale ui.json files and apply minor formatting fixes. Updates affect all localized footer copies (e.g. locales/*/ui.json) so the displayed year range is kept up-to-date.

Add daily chart history JSON snapshots for game and map data covering 2025-12-23 through 2026-04-01. Adds per-day files under data/chart_history/game/ and data/chart_history/map/ to record rankings, titles, orgs and favorites for historical charts and analysis.

• Add fetchPackageLeaderboardByStat() function to api_functions.php
• Create package-achievements-api.php and package-leaderboard-api.php endpoints
• Update LeaderboardController and AchievementController with structured JSON responses
• Register /package-achievements and /package-leaderboard routes in api.php
• Add achievements.php section with inline CSS for achievement cards grid
• Add leaderboards.php section with stat selector and player table
• Auto-hide sections when package has no achievements/leaderboards
• Add localization keys for new UI elements
• Include require_once for api_functions.php in api.php

Introduces multiple JSON schema files under schema/output_schemas/ to describe responses from various Facepunch API endpoints, including package queries, news, reviews, versions, and utility endpoints. Also adds schemav1.py and renames schema.py to schemav2.py for versioning.

Added new chart history JSON files for games and maps for December 3rd, 4th, 5th, and 6th, 2025. Updated existing map chart history for December 3rd, 2025 with latest data.