feat: Add comprehensive Django user app with tests using model-bakery

- Implemented user authentication with JWT tokens
- Added user and profile models with OneToOne relationship
- Created service layer for business logic separation
- Implemented DRF serializers and views
- Added comprehensive test suite with model-bakery factories
- Fixed ipdb/pdbpp dependency conflicts with custom test runner
- Configured development and production environments
- Added deployment configurations for Apache, systemd, and Docker

ruff.toml

@@ -0,0 +1,81 @@
+# Enable pycodestyle (`E`) and Pyflakes (`F`) codes by default.
+select = [
+    "E",      # pycodestyle errors
+    "W",      # pycodestyle warnings
+    "F",      # pyflakes
+    "I",      # isort
+    "C",      # mccabe
+    "B",      # flake8-bugbear
+    "Q",      # flake8-quotes
+    "DJ",     # flake8-django
+]
+
+extend-ignore = [
+    "E501",   # line too long, handled by formatter
+    "DJ01",   # Missing docstring (too strict for Django)
+]
+
+# Allow autofix for all enabled rules (when `--fix`) is provided.
+fixable = ["ALL"]
+unfixable = []
+
+# Exclude a variety of commonly ignored directories.
+exclude = [
+    ".bzr",
+    ".direnv",
+    ".eggs",
+    ".git",
+    ".git-rewrite",
+    ".hg",
+    ".mypy_cache",
+    ".nox",
+    ".pants.d",
+    ".pytype",
+    ".ruff_cache",
+    ".svn",
+    ".tox",
+    ".venv",
+    "__pypackages__",
+    "_build",
+    "buck-out",
+    "build",
+    "dist",
+    "node_modules",
+    "venv",
+    "*/migrations/*",
+    "*/__pycache__/*",
+]
+
+# Same as Black.
+line-length = 88
+
+# Allow unused variables when underscore-prefixed.
+dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
+
+# Assume Python 3.11.
+target-version = "py311"
+
+[mccabe]
+# Unlike Flake8, default to a complexity level of 10.
+max-complexity = 10
+
+[per-file-ignores]
+# Ignore `E402` (import violations) in all `__init__.py` files
+"__init__.py" = ["E402"]
+# Ignore complexity issues in tests
+"tests/*" = ["C901"]
+"**/test_*" = ["C901"]
+"**/tests.py" = ["C901"]
+
+[format]
+# Like Black, use double quotes for strings.
+quote-style = "double"
+
+# Like Black, indent with spaces, rather than tabs.
+indent-style = "space"
+
+# Like Black, respect magic trailing commas.
+skip-magic-trailing-comma = false
+
+# Like Black, automatically detect the appropriate line ending.
+line-ending = "auto"