MCP: Start Instances

[jjoderis]

Summary

Added a new MCP tool that allows a user to start instances of processes through a chat with an LLM.

Details

• changed the get-processes tool to only return processes that have at least one version and to only show the information about the most recent version
• changed the get-process-info tool to return the bpmn of the most recent version instead of the one of the latest/editable version
• added a new tool named start-process that allows an LLM to start an instance of the most recent version of a process
  • checks that the version is marked as executable and returns an error if it is not
  • takes start variables as one of its parameters to allow a user to supply required variables through the chat with the LLM (if they are missing an error is returned to tell the LLM to ask the user for values for the variables)
• adjusted some backend function that are necessary for deploying processes and starting instances to take the users ability as a parameter to allow the authorization to work when used through MCP
  • without this change the functions would implicitly try to access the users session from next-auth which is not available since the MCP flow does not authorize through next-auth leading to errors

[github-actions]

✅ Successfully created Preview Deployment.

https://pr-709---ms-server-staging-c4f6qdpj7q-ew.a.run.app