feat: ShellMate - SSH Chess TUI

Play chess in your terminal over SSH. No installs, no accounts.

Features:
- Beautiful terminal-filling chess board with ANSI colors
- Play against Stockfish AI (multiple difficulty levels)
- Two-step move interaction with visual feedback
- Leaderboard with PostgreSQL persistence
- SSH key persistence across restarts

Infrastructure:
- Docker containerized deployment
- CI/CD pipeline for dev/staging/production
- Health checks with auto-rollback
- Landing page at shellmate.sh

Tech: Python 3.12+, asyncssh, python-chess, Stockfish

pyproject.toml

@@ -0,0 +1,53 @@
+[project]
+name = "shellmate"
+version = "0.1.0"
+description = "SSH into chess mastery - Terminal chess over SSH"
+readme = "README.md"
+license = { text = "MIT" }
+authors = [{ name = "Greg Hendrickson", email = "greg@gregh.dev" }]
+requires-python = ">=3.12"
+dependencies = [
+    "textual>=7.4.0",
+    "python-chess>=1.999",
+    "asyncssh>=2.22.0",
+    "redis>=7.1.0",
+    "asyncpg>=0.30.0",
+    "stockfish>=4.0.6",
+    "rich>=14.3.0",
+    "pydantic>=2.12.0",
+    "pydantic-settings>=2.7.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=8.3.0",
+    "pytest-asyncio>=0.25.0",
+    "ruff>=0.9.0",
+    "mypy>=1.14.0",
+]
+
+[project.scripts]
+shellmate = "shellmate.cli:main"
+shellmate-server = "shellmate.ssh.server:main"
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.ruff]
+line-length = 100
+target-version = "py312"
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "N", "W", "UP"]
+
+[tool.mypy]
+python_version = "3.12"
+strict = true
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+testpaths = ["tests"]
+filterwarnings = [
+    "ignore::DeprecationWarning",
+]