Integrate rotating proxy support and cleanup

.env.example

@@ -13,3 +13,10 @@ API_PORT=8000
 
 # Scraping Limits
 MAX_LISTINGS_PER_SESSION=25
+
+# Optional Proxy Configuration
+# If using rotating proxies (e.g., Webshare), uncomment and provide the proxy URL.
+# Example: http://username:password@proxyhost:port
+# PROXY_SERVER=
+# PROXY_USERNAME=
+# PROXY_PASSWORD=

README.md

@@ -20,3 +20,28 @@ The scraper can also be run standalone:
 ```bash
 python main.py scrape_test
 ```
+
+## Environment Variables
+
+Set the following variables in a `.env` file or your deployment environment:
+
+| Variable | Description | Default |
+| --- | --- | --- |
+| `DATABASE_URL` | Database connection URL | `sqlite+aiosqlite:///./vehicle_data.db` |
+| `HEADLESS` | Run the browser in headless mode | `true` |
+| `BROWSER_TIMEOUT` | Playwright launch timeout (ms) | `60000` |
+| `PAGE_DELAY` | Base delay after page loads (ms) | `5000` |
+| `MIN_DELAY_BETWEEN_ACTIONS` | Delay between scraping actions (s) | `2.5` |
+| `API_HOST` | Host for the FastAPI server | `127.0.0.1` |
+| `API_PORT` | Port for the FastAPI server | `8000` |
+| `MAX_LISTINGS_PER_SESSION` | Maximum listings fetched per scrape | `25` |
+| `PROXY_SERVER` | *(Optional)* Proxy URL for Playwright | - |
+| `PROXY_USERNAME` | *(Optional)* Proxy username | - |
+| `PROXY_PASSWORD` | *(Optional)* Proxy password | - |
+
+### Pagination
+
+The `/api/v1/vehicles/` endpoint accepts `skip` and `limit` query parameters to paginate results.
+Example: `/api/v1/vehicles/?skip=25&limit=25`.
+
+