documented the new endpoint in the openapi.json

Server/openapi.json

@@ -229,6 +229,75 @@
         }
       }
     },
+    "/auth/refresh": {
+      "post": {
+        "tags": ["auth"],
+        "description": "Generates a new auth token if the refresh token is valid.",
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object",
+                "properties": {}
+              }
+            }
+          },
+          "required": false
+        },
+        "parameters": [
+          {
+            "name": "x-refresh-token",
+            "in": "header",
+            "description": "Refresh token required to generate a new auth token.",
+            "required": true,
+            "schema": {
+              "type": "string"
+            }
+          },
+          {
+            "name": "authorization",
+            "in": "header",
+            "description": "Old access token, used to extract payload).",
+            "required": true,
+            "schema": {
+              "type": "string"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "New access token generated.",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/SuccessResponse"
+                }
+              }
+            }
+          },
+          "401": {
+            "description": "Unauthorized or invalid refresh token.",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          },
+          "500": {
+            "description": "Internal Server Error",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
     "/auth/user/{userId}": {
       "put": {
         "tags": ["auth"],