Add environment configuration and email settings

- Created a new .env.example file for environment variable configuration including Django settings, email configurations, and common SMTP provider examples.
- Updated .vscode/settings.json to include additional words for spell checking.
- Enhanced config/settings.py to load environment variables using python-dotenv, added data directory management, and configured email settings.
- Updated config/urls.py to include debug toolbar URLs conditionally based on testing.
- Added pytest configuration in conftest.py for Django testing.
- Created core application with custom User model, admin registration, and migrations.
- Implemented tests for User model and admin functionalities.
- Updated pyproject.toml to include new dependencies for debugging and environment management.
- Updated uv.lock to reflect new package versions and dependencies.

.env.example

@@ -0,0 +1,68 @@
+# Django Configuration
+# Set to False in production
+DEBUG=True
+
+# Django Secret Key
+# Generate a new secret key for production: python -c 'from django.core.management.utils import get_random_secret_key; print(get_random_secret_key())'
+DJANGO_SECRET_KEY=your-secret-key-here
+
+# Email Configuration
+# SMTP Host (examples below)
+EMAIL_HOST=smtp.gmail.com
+
+# SMTP Port (common ports: 587 for TLS, 465 for SSL, 25 for unencrypted)
+EMAIL_PORT=587
+
+# Email credentials
+EMAIL_HOST_USER=your-email@gmail.com
+EMAIL_HOST_PASSWORD=your-app-password-here
+
+# Connection security
+# Use TLS (True for most providers like Gmail, Outlook)
+EMAIL_USE_TLS=True
+# Use SSL (False for most providers, True for some like older configurations)
+EMAIL_USE_SSL=False
+
+# Connection timeout in seconds
+EMAIL_TIMEOUT=10
+
+# Common SMTP Provider Examples:
+# 
+# Gmail:
+# EMAIL_HOST=smtp.gmail.com
+# EMAIL_PORT=587
+# EMAIL_USE_TLS=True
+# EMAIL_USE_SSL=False
+# Note: Requires App Password with 2FA enabled
+#
+# Outlook/Hotmail:
+# EMAIL_HOST=smtp-mail.outlook.com
+# EMAIL_PORT=587
+# EMAIL_USE_TLS=True
+# EMAIL_USE_SSL=False
+#
+# Yahoo:
+# EMAIL_HOST=smtp.mail.yahoo.com
+# EMAIL_PORT=587
+# EMAIL_USE_TLS=True
+# EMAIL_USE_SSL=False
+#
+# SendGrid:
+# EMAIL_HOST=smtp.sendgrid.net
+# EMAIL_PORT=587
+# EMAIL_USE_TLS=True
+# EMAIL_USE_SSL=False
+# EMAIL_HOST_USER=apikey
+# EMAIL_HOST_PASSWORD=your-sendgrid-api-key
+#
+# Mailgun:
+# EMAIL_HOST=smtp.mailgun.org
+# EMAIL_PORT=587
+# EMAIL_USE_TLS=True
+# EMAIL_USE_SSL=False
+#
+# Amazon SES:
+# EMAIL_HOST=email-smtp.us-east-1.amazonaws.com
+# EMAIL_PORT=587
+# EMAIL_USE_TLS=True
+# EMAIL_USE_SSL=False