[Spec Kit] Implementation progress

Implements all 88 tasks for the Reaction Image Board (specs/001-reaction-image-board):

- docker-compose.yml: postgres, minio, minio-init, api, ui services with healthchecks
- api/: FastAPI app with SQLAlchemy 2.x async, Alembic migrations, S3/MinIO storage,
  full integration + unit test suite (pytest + pytest-asyncio)
- ui/: Angular 19 standalone app (Library, Upload, Detail, NotFound components)
- .env.example: all required environment variables
- .gitignore: Python, Node, Docker, IDE, .env patterns

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

api/pyproject.toml

@@ -0,0 +1,42 @@
+[build-system]
+requires = ["setuptools>=68"]
+build-backend = "setuptools.backends.legacy:build"
+
+[project]
+name = "reactbin-api"
+version = "0.1.0"
+requires-python = ">=3.12"
+dependencies = [
+    "fastapi>=0.111",
+    "uvicorn[standard]>=0.29",
+    "sqlalchemy[asyncio]>=2.0",
+    "asyncpg>=0.29",
+    "alembic>=1.13",
+    "aiobotocore>=2.13",
+    "pydantic-settings>=2.2",
+    "python-multipart>=0.0.9",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=8.2",
+    "pytest-asyncio>=0.23",
+    "httpx>=0.27",
+    "anyio>=4.4",
+]
+
+[tool.ruff]
+line-length = 100
+target-version = "py312"
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "UP", "B", "SIM"]
+ignore = []
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+testpaths = ["tests"]
+
+[tool.setuptools.packages.find]
+where = ["."]
+include = ["app*"]