[FR] Support for "Service Account" tokens to interact with API/MCP #1578

Currently if we want to leverage Sourcebot's API or MCP, we need a "human-associated" token, either OAuth bearer or generated API key.

This makes it challenging to integrate with "non-human" processes, such as AI Bots etc.

Would therefore like to see support for creating "service account" tokens that can be used to interact with the Sourcebot API/MCP.

Did some initial scoping in https://app.sourcebot.dev/chat/cmsrjf1fa002fo95a6rhejqvx