fix: improve API key purge command and remove redundant URL decoding

Author: danfmaia

README.md

@@ -150,8 +150,7 @@ When you no longer need an API key, you can purge it from the server. This will:
 To purge your API key:
 
 ```bash
-# Replace 'your-api-key' with your actual API key
-curl -X DELETE -H "X-API-KEY: your-api-key" https://codequery.dev/api-keys/your-api-key
+source .env && curl -X DELETE -H "X-API-KEY: $API_KEY" https://codequery.dev/api-keys/your-api-key
 ```
 
 Note:

gateway/gateway.py

@@ -436,9 +436,6 @@ async def purge_api_key(api_key: str, request: Request):
             Users can purge their own keys, while admin can purge any key.
             """
             try:
-                # URL decode the API key
-                api_key = unquote_plus(api_key)
-
                 # Get the request API key
                 request_api_key = request.headers.get("x-api-key")
                 if not request_api_key: