v0.13.0 web and terminal client enhance, replay api, linux server deploy, doc and dependency update

README.md

@@ -3,7 +3,7 @@
     <td>
       <h1>♚♛♜♝♞</h1>
       <p>
-        <a href="https://golang.org"><img src="https://img.shields.io/badge/Go-1.26-00ADD8?style=flat&logo=go" alt="Go 1.26"></a>
+        <a href="https://golang.org"><img src="https://img.shields.io/badge/Go-1.27-00ADD8?style=flat&logo=go" alt="Go 1.27"></a>
         <a href="https://opensource.org/licenses/BSD-3-Clause"><img src="https://img.shields.io/badge/License-BSD_3--Clause-blue.svg" alt="License BSD-3"></a>
       </p>
     </td>
@@ -20,24 +20,31 @@ Go backend server providing a RESTful API for chess gameplay with user authentic
 - User registration and JWT authentication
 - Stockfish engine integration for validation
 - Human vs human, human vs computer, computer vs computer modes
+- Resignation, draw offers (the computer answers from its evaluation), and
+  automatic draws: dead material, threefold repetition, fifty-move rule
 - Custom FEN position support
 - Asynchronous engine move calculation
 - Configurable engine strength and thinking time
 - PostgreSQL 18 persistence with ordered async writes for games
 - Durable game results, player claims and names, ordered move history, and replay API
+- Dependency-free rules core: SAN history, PGN export, FEN validation, and a
+  shadow check of every engine-validated move
 - Games without a registered player are purged 24 hours after their last activity
-- Authenticated stored-game listing with bounded pagination
+- Authenticated stored-game listing with cursor pagination and filters
 - Configurable structured debug logs for persistence, cleanup, and engine work
 - User management with secure Argon2id password storage and scoped JWTs
 - Static, CGO-free binaries (cross-compiles for FreeBSD)
+- Scripted deployment: FreeBSD jail (rc.d) or Linux (sandboxed systemd unit)
+- Optional hourly integrity sweep of stored games and accounts
 - PID file management for singleton enforcement
 - Database CLI for storage and user administration
 
 ## Requirements
 
-- Go 1.26+
+- Go 1.27+
 - Stockfish chess engine (`stockfish` in PATH)
-- PostgreSQL 18 (for persistence and accounts; see [Deployment](./doc/deployment.md))
+- PostgreSQL 17+, 18 recommended (for persistence and accounts; see
+  [FreeBSD](./doc/deployment.md) or [Linux](./doc/deployment-linux.md) deployment)
 
 ### Installation
 ```bash
@@ -174,6 +181,8 @@ Access the UI at `http://localhost:9090` when server is running with `-serve` fl
 
 - [API Reference](./doc/api.md) - Endpoint specifications including auth
 - [Deployment](./doc/deployment.md) - FreeBSD jail, PostgreSQL 18, `chessd` service, nginx, web clients
+- [Linux Deployment](./doc/deployment-linux.md) - Debian/Ubuntu/Arch, systemd service, development setup
+- [Database Operations](./doc/database.md) - layout, psql as `postgres`, games, users, integrity sweep, starting fresh
 - [Architecture](./doc/architecture.md) - System design with auth layer
 - [Development](./doc/development.md) - Build, test, and user management
 - [Client Guide](./doc/client.md) - Interactive debugging client