feat: gpt-5.6 support

frontend/src/i18n/locales/en-US.json

@@ -21,7 +21,6 @@
   "15d124b200ddabed": "Maximum number of context tokens the model can accept in a single request. Leave blank to use the default.",
   "18b7312022cd1840": "Start Service",
   "1af38868896cf53d": "Routing mode only supports local or upstream",
-  "1b7d24b212e52c54": "{0} reasoning effort only supports low, medium, high, and xhigh",
   "1bc77f5ab979f4c1": "Add Model Settings",
   "1e238093b79b3165": "Uses 65536 by default when left blank",
   "24343a2096988d42": "Failed to open",
@@ -84,6 +83,7 @@
   "7e9e334aeb0bdc07": "Service operation failed",
   "7f68ebad19ba6bcd": "Check for Updates",
   "81123c56d5d880d0": "API Key",
+  "8672864e90417138": "Max",
   "86df7ec743047234": "Service running",
   "87ed126f7bd1121e": "Routing Mode",
   "899add6275682210": "Uses 200000 by default when left blank",
@@ -154,6 +154,7 @@
   "d7da2aabd35772ec": "e.g. 200000 (leave blank to use the default)",
   "da590a8fe3ce4de0": "Please select",
   "daede9881787abe7": "Notes",
+  "dbb4b5be9b5723dc": "{0} reasoning effort only supports low, medium, high, xhigh, and max",
   "dbee6e7139243362": "{0} base URL cannot be empty",
   "dc82c5e8fb2ab777": "Version: v{0}",
   "de8184da1ef88d03": "Configured",