Development aids

Environment variables for screenshots, tests and a second instance:

Variable	Does
MB_SCREENSHOT=<file.png>	saves the window after load and quits
MB_HASH=mode=changes&open=<path>	sets the start state (help opens the help dialog)
MB_THEME=light|dark	forces a theme
MB_USER_DATA=<dir>	runs a second, separate instance (use another MB_MCP_PORT)
MB_MCP_PORT=<port>	port of the MCP server and the channel
MB_SHOT_DIR=<dir>	saves the window after every MCP command

--root=<folder> opens a folder for one run without remembering it.

Screenshots for these docs

scripts/docs-screens.sh takes every picture in these docs from the example folder in docs/_example/ – brain/ is committed into a fresh Git repository, changes/ lies on top as the agent’s uncommitted work. It needs a built app and ImageMagick; with names as arguments it takes only those pictures.