feat: scaffold Django multi-tenant project with 5 of 9 apps

Phase 1 scaffolding: config/, core/, base models, AES-256-GCM phone encryption, enums mirror

apps.tenant: Tenant + Domain (django-tenants)

apps.org: 11 models (OrgUnit hierarchy, Staff, audit logs)

apps.account: 4 models (UserAccount as AUTH_USER_MODEL, login/password tracking)

apps.permission: 7 models (RBAC + overrides + datascope + append-only changelog)

apps.region: 5 models (District, BusinessArea, MetroLine, MetroStation, School)

All migrations generated, manage.py check passes

pyproject.toml

@@ -0,0 +1,20 @@
+[tool.ruff]
+line-length = 100
+target-version = "py312"
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "N", "W", "UP"]
+ignore = ["E501"]
+
+[tool.black]
+line-length = 100
+target-version = ["py312"]
+
+[tool.isort]
+profile = "black"
+line_length = 100
+
+[tool.pytest.ini_options]
+DJANGO_SETTINGS_MODULE = "config.settings.testing"
+python_files = ["test_*.py", "*_test.py"]
+addopts = "--reuse-db --cov=apps --cov=core --cov-report=term-missing -n auto"