Update: Using C++26 with contracts enabled

CMakePresets.json

@@ -8,19 +8,9 @@
   "configurePresets": [
     {
       "name": "default",
-      "displayName": "Default (system compiler)",
+      "displayName": "GCC 16 + C++26",
       "generator": "Unix Makefiles",
       "binaryDir": "${sourceDir}/build",
-      "cacheVariables": {
-        "CMAKE_BUILD_TYPE": "Debug",
-        "COURSE_ENABLE_CONTRACTS": "ON"
-      }
-    },
-    {
-      "name": "gcc26-contracts",
-      "displayName": "GCC 16 + C++26 contracts (recommended)",
-      "generator": "Unix Makefiles",
-      "binaryDir": "${sourceDir}/build-gcc26",
       "cacheVariables": {
         "CMAKE_BUILD_TYPE": "Debug",
         "CMAKE_C_COMPILER": "/opt/homebrew/bin/gcc-16",
@@ -33,10 +23,6 @@
     {
       "name": "default",
       "configurePreset": "default"
-    },
-    {
-      "name": "gcc26-contracts",
-      "configurePreset": "gcc26-contracts"
     }
   ],
   "testPresets": [
@@ -46,13 +32,6 @@
       "output": {
         "outputOnFailure": true
       }
-    },
-    {
-      "name": "gcc26-contracts",
-      "configurePreset": "gcc26-contracts",
-      "output": {
-        "outputOnFailure": true
-      }
     }
   ]
 }