CheckAI v0.5.2

Fixed

• Web analysis UI contract drift — Fixed the TypeScript analysis client so it now submits jobs to /api/analysis/game/{game_id} and polls /api/analysis/jobs/{job_id} instead of outdated /api/games/* paths
  • Reworked the analysis panel to render the actual job-based backend payload (status, progress, completed summary, failure state) instead of assuming live search telemetry fields that were never returned by the API
  • Reset analysis polling cleanly when switching games so stale background polling does not leak across views
• Frontend API typing alignment — Synced the web UI's TypeScript models with the Rust API contract
  • Added position_history to the web GameState type
  • Expanded move/action response typing to match the real server payloads
  • Replaced stale analysis result typing with explicit job/result summary types
• Documentation and version metadata — Updated OpenAPI metadata, README installation snippets, changelog entries, and analysis/tablebase docs so published docs match current behavior
  • Clarified that the analysis API is job-based game review, not a live score/nodes stream
  • Clarified current Syzygy support as analytical / heuristic scaffolding rather than full binary probing

Added

• Regression coverage — Added tests for move-quality threshold boundaries and GameStateJson position-history export consistency

CheckAI v0.5.1

Fixed

• Bun/WASM package contents — Fixed the published @josunlp/checkai package so the compiled WebAssembly binary is included in release tarballs instead of only the generated glue JavaScript
  • Added a prepack packaging guard so Bun packaging and publishing always verify the generated pkg/ artifacts before release
  • Removed the generated pkg/.gitignore during packaging, which previously caused package tarballs to omit pkg/checkai.js and pkg/checkai_bg.wasm
  • Added explicit npm subpath exports for the raw generated artifacts (@josunlp/checkai/raw and @josunlp/checkai/wasm)

CheckAI v0.5.0

Added

• WebAssembly (WASM) build — The core chess engine is now compiled to WebAssembly via wasm-pack, enabling use from JavaScript/Node.js environments
  • New wasm/ crate with #[path] re-exports of core engine modules (types, movegen, eval, search, zobrist) — zero code duplication
  • WASM-compatible search using web-time crate instead of std::time::Instant
  • js-sys integration for timestamps and random ID generation
• npm package (@josunlp/checkai) published to GitHub Packages
  • Node.js CLI tool (checkai) installable via npm install -g @josunlp/checkai
  • JavaScript/ESM library API (import { engine } from "@josunlp/checkai")
• Full feature parity in WASM — All major features available in the npm package:
  • Position analysis: legalMoves, evaluate, bestMove, isCheckmate, isStalemate, isCheck, isInsufficientMaterial, makeMove
  • Game management: createGame, createGameFromFen, gameState, gameSubmitMove, gameProcessAction, gameMoveHistory, gameFen, deleteGame, listGames
  • Export: gameToPgn, gameToJson, gameToText
  • Board display: boardToAscii
• Node.js CLI commands — fen, moves, eval, search, move, board, play, game new/state/move/action/list/delete, export, version
• Release workflow — New wasm job in release.yml builds the WASM package, creates a tarball release asset, and publishes to GitHub Packages using GITHUB_TOKEN

CheckAI v0.4.0

Added

• Modern TypeScript Web UI — Complete modular rewrite of the browser frontend
  • Built with @bquery/bquery v1.4 (TypeScript-first DOM library with signals)
  • Tailwind CSS v4 with custom @theme tokens for consistent design
  • Vite v7 build system with HMR, path aliases, and production bundling
  • 12 modular TypeScript source files: types, store, api, ws, i18n, ui, board, game, archive, analysis, main, styles
  • Reactive signal-driven architecture with unidirectional data flow
  • SVG chess board with click selection, legal move indicators, check highlight, and board flip
  • Analysis panel with start/stop, real-time polling, score formatting (including mate detection)
  • Promotion dialog with piece picker
  • FEN copy, PGN copy, and FEN import directly from the toolbar
  • WebSocket connection indicator with auto-reconnect
  • Vite-built SPA embedded into the Rust binary via rust-embed (dual DistAssets + WebAssets with priority fallback)
• FEN/PGN API endpoints — Three new REST endpoints for position interchange
  • GET /api/games/{id}/fen — Export full 6-field FEN notation
  • POST /api/games/fen — Create a new game from a FEN string with full validation
  • GET /api/games/{id}/pgn — Export PGN with Seven Tag Roster headers
  • Complete parse_fen() parser and game_to_pgn() generator
  • OpenAPI/Swagger annotations for all new endpoints
• King safety evaluation — Pawn shield analysis, open file penalties near the king, enemy piece tropism within Chebyshev distance 2
• Piece mobility evaluation — Pseudo-legal square counts for knights, bishops, rooks, and queens with separate midgame/endgame scoring
• Static Exchange Evaluation (SEE) — Filters bad captures at low depth (≤ 3) to reduce search explosion
• Futility pruning — Skips quiet moves when static evaluation plus margin is far below alpha at depth ≤ 3
• Bun as the frontend package manager and script runner (replaces Node.js/npm)
• Build script (build.rs) — Ensures web/dist/ exists at compile time so rust-embed compiles without a prior web build (fixes CI for clippy/test jobs)

Changed

• rust-embed now uses include-exclude feature to exclude TypeScript source, node_modules, and build config from the legacy WebAssets embed
• Evaluation module description updated from "PeSTO position evaluation" to "PeSTO evaluation + king safety + mobility"
• Search module description updated to include SEE and futility pruning
• VitePress documentation updated for all new features: architecture, analysis engine, web UI, REST API, landing page

Fixed

• Promotion dialog: piece symbols were not displayed because dataset.piece was read instead of dataset.promote — now correctly reads the data-promote attribute from the HTML buttons
• CI build: #[derive(RustEmbed)] failed when web/dist/ did not exist; added build.rs to auto-create the directory so cargo clippy and cargo test work without a prior web build
• Collapsed nested if statements in king tropism evaluation (clippy collapsible_if)
• Replaced manual range check with RangeInclusive::contains in futility pruning (clippy manual_range_contains)

CheckAI v0.3.1

Added

• VitePress documentation site — Complete project documentation built with VitePress and deployed to GitHub Pages
  • Guide section: Getting Started, CLI Commands, Docker, Configuration, Web UI, Analysis Engine, Opening Book, Tablebases, Architecture, Internationalization
  • API Reference: REST API, WebSocket API, Analysis API with full endpoint docs, request/response examples, and code samples (JavaScript, Python)
  • Agent Protocol: Overview, Game State schema, Move Output schema, Chess Rules (FIDE 2023), Special Actions, worked examples
  • Changelog page mirroring CHANGELOG.md
  • Local search, edit-on-GitHub links, dark mode support
• GitHub Actions workflow (docs.yml) — Automatically builds and deploys documentation to GitHub Pages on every release (release: published) with manual trigger support

CheckAI v0.2.2

Fixed

• Draw offer logic: offers now persist correctly after the offerer makes a move, allowing the opponent to accept or decline; previously, offers were cleared immediately on any move
• AGENT.md example 15 (Sicilian Defense): corrected en_passant field from null to "e3" after 1. e4

Added

• 37 comprehensive unit tests in game.rs covering all critical chess engine edge cases:
  • Draw offer lifecycle (persist, decline-by-moving, accept, self-accept rejection)
  • Resignation (both sides)
  • Checkmate patterns (Scholar's mate, Fool's mate)
  • Stalemate detection
  • Castling (kingside, blocked by check, blocked by attacked transit square)
  • En passant (capture, discovered check blocking, expiration after one move)
  • Pawn promotion (requirement enforcement, queen promotion)
  • Pinned pieces (rook along pin line, knight with no moves)
  • Halfmove clock (reset on pawn move, reset on capture)
  • Fullmove number increment after Black's move
  • Position history tracking and threefold repetition claim
  • 50-move rule claim (valid and premature)
  • Insufficient material (K vs K, K+N vs K, K+N+N vs K, K+B vs K+B same/different color)
  • Castling rights updates (king move, rook move, rook capture)
  • Game flow validation (move after game over, illegal move, opponent piece)

CheckAI v0.2.1

Fixed

• Web UI now embedded into the binary via rust-embed, eliminating the need for an external web/ directory
  • Fixes Specified path is not a directory: "web" error when running after installation
  • Frontend is always in sync with the binary version — no separate copy/update step needed
• Removed actix-files dependency in favor of rust-embed for self-contained static asset serving
• Cleaned up broken web-directory copy logic from update.rs
• Reverted unnecessary web-copy additions in install.ps1 (no longer needed)

CheckAI v0.2.0

Added

• Full internationalization (i18n) for all user-facing strings (backend + frontend)
  • Supported languages: English, German, French, Spanish, Chinese (Simplified), Japanese, Portuguese, Russian
  • English as default with automatic fallback
  • Backend: rust-i18n crate with YAML locale files and t!() macro
  • CLI: --lang flag for explicit locale override, auto-detection via CHECKAI_LANG env var and system locale
  • REST API: per-request locale via ?lang= query parameter and Accept-Language header
  • Web UI: browser-based locale detection with language selector dropdown and localStorage persistence
• i18n.rs helper module for locale detection and HTTP request extraction
• Web UI language selector in header with live locale switching
• web/js/i18n.js frontend translation module with 8 languages (~120 keys each)
• CI/CD pipelines for GitHub Actions (build, test, release)
• Cross-platform install and uninstall scripts (Linux, macOS, Windows)
• Automatic update check on startup (notifies when a new version is available)
• checkai update command for in-place self-updating on all platforms
• CHANGELOG.md following Keep a Changelog format
• Semantic versioning (SemVer) for all releases

Changed

• All source code comments translated to English
• All hardcoded user-facing strings in 10 Rust source modules replaced with t!() i18n calls
• Web UI default language changed from German to English with data-i18n attribute system
• PIECE_NAMES constant replaced with pieceName() function using i18n lookups

Fixed

• Resolved 24 Clippy warnings (collapsible if-let, redundant closures, &PathBuf → &Path, io_other_error, unnecessary .to_string() on t!() results)