Refactor code structure for improved readability and maintainability

pyproject.toml

@@ -0,0 +1,39 @@
+[project]
+name = "reader-api"
+version = "0.1.0"
+description = "Shared backend API for reader web and reader-app mobile clients"
+readme = "README.md"
+requires-python = ">=3.11"
+dependencies = [
+  "fastapi>=0.116.1",
+  "uvicorn[standard]>=0.35.0",
+  "sqlalchemy[asyncio]>=2.0.43",
+  "greenlet>=3.0.0",
+  "asyncpg>=0.30.0",
+  "motor>=3.7.1",
+  "python-jose[cryptography]>=3.5.0",
+  "google-auth>=2.40.3",
+  "requests>=2.32.5",
+  "pydantic-settings>=2.10.1",
+  # mod routes deps
+  "boto3>=1.35.0",
+  "httpx>=0.27.0",
+  "ebooklib>=0.18",
+  "html2text>=2024.2.26",
+  "python-slugify>=8.0.4",
+  "python-multipart>=0.0.9",
+]
+
+[dependency-groups]
+dev = [
+  "ruff>=0.12.11",
+]
+
+[tool.ruff]
+line-length = 100
+
+[tool.ruff.lint]
+select = ["E", "F", "I"]
+
+[tool.uv]
+package = false