fix: fix temporary whitelist IP listing endpoint

Fix new API endpoint `/api/whitelist/temp/list` to retrieve currently
active temporary whitelisted IPs. Also clean up trailing whitespace in
the permanent whitelist endpoint section.

openapi.yaml

@@ -110,6 +110,8 @@ paths:
           description: Internal error — database failure
         '405':
           description: Method not allowed — only POST is supported
+
+  /api/whitelist/temp/list:
     get:
       summary: List temporary whitelisted IPs
       description: List all currently active temporary whitelisted IPs.
@@ -213,7 +215,7 @@ paths:
                 example: "ip already exists"
         '500':
           description: Internal error
-  
+
   /api/whitelist/perm/list:
     get:
       summary: List permanent whitelisted IPs