init: new structure + fix lint errors

pyproject.toml

@@ -0,0 +1,44 @@
+[project]
+name = "cpv3"
+version = "0.1.0"
+description = "Coffee Project Backend v3 (FastAPI)"
+requires-python = ">=3.11"
+dependencies = [
+  "fastapi>=0.115.0",
+  "uvicorn[standard]>=0.30.0",
+  "sqlalchemy>=2.0.30",
+  "asyncpg>=0.29.0",
+  "alembic>=1.13.2",
+  "pydantic>=2.7.0",
+  "pydantic-settings>=2.3.0",
+  "python-multipart>=0.0.9",
+  "boto3>=1.42.1",
+  "httpx>=0.27.0",
+  "PyJWT>=2.8.0",
+  "passlib[bcrypt]>=1.7.4",
+  # bcrypt 4.x dropped the __about__ metadata passlib 1.7.x expects; pin to 3.x.
+  "bcrypt>=3.2.2,<4.0.0",
+  "python-dotenv>=1.0.1",
+  "pydub>=0.25.1",
+  "google-cloud-speech>=2.34.0",
+  "openai-whisper>=20250625",
+]
+
+[dependency-groups]
+dev = [
+    "mypy>=1.19.1",
+    "ruff>=0.6.0",
+]
+
+[tool.ruff]
+line-length = 100
+
+[build-system]
+requires = ["setuptools>=68", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools.packages.find]
+where = ["."]
+include = ["cpv3*"]
+exclude = ["alembic*"]
+namespaces = false