feat: major project restructure - move Django to backend dir and fix critical imports

- Restructure project: moved Django backend to backend/ directory
- Add frontend/ directory for future Next.js application
- Add shared/ directory for common resources
- Fix critical Django import errors:
  - Add missing sys.path modification for apps directory
  - Fix undefined CATEGORY_CHOICES imports in rides module
  - Fix media migration undefined references
  - Remove unused imports and f-strings without placeholders
- Install missing django-environ dependency
- Django server now runs without ModuleNotFoundError
- Update .gitignore and README for new structure
- Add pnpm workspace configuration for monorepo setup

tests/e2e/setup.sh

@@ -1,55 +0,0 @@
-#!/bin/bash
-set -e  # Exit on error
-
-# Function to check command exists
-check_command() {
-    if ! command -v $1 &> /dev/null; then
-        echo "Error: $1 is required but not installed."
-        exit 1
-    fi
-}
-
-# Check required commands
-check_command uv
-check_command curl
-check_command playwright
-
-# Clean up any existing test data
-echo "Cleaning up any existing test data..."
-uv run manage.py cleanup_test_data || true
-
-# Install Python dependencies
-echo "Installing Python dependencies..."
-uv pip install -r requirements.txt
-
-# Install Playwright browsers
-echo "Installing Playwright browsers..."
-playwright install chromium firefox webkit
-
-# Create test fixtures directory
-echo "Setting up test fixtures..."
-mkdir -p tests/fixtures
-
-# Download test images
-echo "Downloading test images..."
-curl -L "https://picsum.photos/1920/1080" -o tests/fixtures/test_photo.jpg
-curl -L "https://picsum.photos/500/500" -o tests/fixtures/test_avatar.jpg
-
-# Verify images were downloaded
-if [ ! -f tests/fixtures/test_photo.jpg ] || [ ! -f tests/fixtures/test_avatar.jpg ]; then
-    echo "Error: Failed to download test images"
-    exit 1
-fi
-
-# Create test users
-echo "Creating test users..."
-uv run manage.py create_test_users
-
-# Make cleanup script executable
-chmod +x tests/e2e/cleanup.sh
-
-echo "Setup complete! You can now:"
-echo "1. Run all tests: pytest tests/e2e/"
-echo "2. Run specific tests: pytest tests/e2e/test_auth.py"
-echo "3. Run with specific browser: pytest --browser firefox tests/e2e/"
-echo "4. Clean up test data: ./tests/e2e/cleanup.sh"