Use new naming for token

README.md

@@ -128,9 +128,9 @@ Notes:
 
 ### Auth
 
-Requests must include the token using the `X-Filetools-Token` header.
+Requests must include the token using the `X-Luxtools-Token` header.
 
-- Header: `X-Filetools-Token: <token>`
+- Header: `X-Luxtools-Token: <token>`
 - For `GET /open`, a `token=...` query parameter is also accepted as a fallback.
 
 ### `GET /health`
@@ -160,7 +160,7 @@ Example:
 ```bash
 curl -sS -X POST \
   -H 'Content-Type: application/json' \
-  -H 'X-Filetools-Token: your-shared-secret' \
+  -H 'X-Luxtools-Token: your-shared-secret' \
   --data '{"path":"/tmp"}' \
   http://127.0.0.1:8765/open
 ```
@@ -173,7 +173,7 @@ Example:
 
 ```bash
 curl -i \
-  -H 'X-Filetools-Token: your-shared-secret' \
+  -H 'X-Luxtools-Token: your-shared-secret' \
   'http://127.0.0.1:8765/open?path=/tmp'
 ```