feat: Improve CMake configuration and build environment verification

- Enabled JSON support by default in CMake to resolve Windows build issues.
- Added checks for the existence of the JSON library and its target, providing clear error messages if missing.
- Updated README with instructions for building with AI features.
- Enhanced the build environment verification script for better feedback on setup issues and added checks for agent folder structure.
- Introduced new CMake presets for AI-enabled builds and collaboration support.

CMakePresets.json

@@ -220,7 +220,7 @@
     {
       "name": "windows-debug",
       "displayName": "Windows Debug",
-      "description": "Windows-specific debug configuration with vcpkg",
+      "description": "Windows debug build (JSON enabled by default, AI features disabled)",
       "inherits": "debug",
       "condition": {
         "type": "equals",
@@ -287,6 +287,42 @@
         "YAZE_TEST_ROM_PATH": "${sourceDir}/zelda3.sfc"
       }
     },
+    {
+      "name": "windows-ai-debug",
+      "displayName": "Windows AI Debug",
+      "description": "Windows debug build with AI agent features (JSON enabled)",
+      "inherits": "windows-debug",
+      "cacheVariables": {
+        "Z3ED_AI": "ON",
+        "YAZE_WITH_JSON": "ON",
+        "YAZE_BUILD_Z3ED": "ON",
+        "YAZE_BUILD_TESTS": "ON"
+      }
+    },
+    {
+      "name": "windows-ai-release",
+      "displayName": "Windows AI Release",
+      "description": "Windows release build with AI agent features (JSON enabled)",
+      "inherits": "windows-release",
+      "cacheVariables": {
+        "Z3ED_AI": "ON",
+        "YAZE_WITH_JSON": "ON",
+        "YAZE_BUILD_Z3ED": "ON"
+      }
+    },
+    {
+      "name": "windows-collab-debug",
+      "displayName": "Windows Collaboration Debug",
+      "description": "Windows debug build with full collaboration support (JSON + gRPC)",
+      "inherits": "windows-debug",
+      "cacheVariables": {
+        "Z3ED_AI": "ON",
+        "YAZE_WITH_JSON": "ON",
+        "YAZE_WITH_GRPC": "ON",
+        "YAZE_BUILD_Z3ED": "ON",
+        "YAZE_BUILD_TESTS": "ON"
+      }
+    },
     {
       "name": "windows-arm64-debug",
       "displayName": "Windows ARM64 Debug",
@@ -500,6 +536,27 @@
       "displayName": "Windows z3ed Agent Test Build",
       "configuration": "Debug",
       "jobs": 12
+    },
+    {
+      "name": "windows-ai-debug",
+      "configurePreset": "windows-ai-debug",
+      "displayName": "Windows AI Debug Build",
+      "configuration": "Debug",
+      "jobs": 12
+    },
+    {
+      "name": "windows-ai-release",
+      "configurePreset": "windows-ai-release",
+      "displayName": "Windows AI Release Build",
+      "configuration": "Release",
+      "jobs": 12
+    },
+    {
+      "name": "windows-collab-debug",
+      "configurePreset": "windows-collab-debug",
+      "displayName": "Windows Collaboration Debug Build",
+      "configuration": "Debug",
+      "jobs": 12
     }
   ],
   "testPresets": [