Update workflow-engine-core dependency to dev-main

Update the version constraint for solution-forest/workflow-engine-core
from ^0.0.2-alpha to dev-main to track latest changes on the core
package. All 73 tests pass and PHPStan reports no errors with the
updated dependency.

https://claude.ai/code/session_0116MrcGBE7oBdTM7D5EtofN

Author: claude

composer.json

@@ -27,7 +27,7 @@
         "illuminate/database": "^10.0||^11.0||^12.0",
         "illuminate/events": "^10.0||^11.0||^12.0",
         "illuminate/support": "^10.0||^11.0||^12.0",
-        "solution-forest/workflow-engine-core": "^0.0.2-alpha"
+        "solution-forest/workflow-engine-core": "dev-main"
     },
      "conflict": {
         "laravel/framework": "<11.0.0"