fix(node): how a hosted group admits people is the operator's, not the hub's

2026-10-01T07:46:39Z

attach_group no longer copies join_policy and visibility from the hub's answer: they come with the operator's request (the desktop creation form, `group add --open`) and default to invite/private; the CLI says when the hub lists the group otherwise. Every string written into node.toml is escaped (toml_string) and read back through tomllib, so a group or folder name cannot write lines of its own (F-17). Co-Authored-By: Claude Opus 5.5

meshbay.git/packages/meshbay-node/tests/test_attach_from_the_hub.py, branch main

fix(node): how a hosted group admits people is the operator's, not the hub's