`effectcraft-cli mcp` had no way to keep an agent's file access to a folder;
the flags were unknown options. Both now take a folder (repeatable, as in
PhotoCraft): with either given, files are read only under a read or write root
and written only under a write root (none: no writes). Defaults are unchanged.
automation::confine::Confinement checks every engine command the backend runs
(execute_command, command_run, open/save_project, each engine.batch step), in
both headless and bridge mode, before it runs: the file parameters of the
commands that read or write files must be absolute paths inside the roots
(symbolic links resolved through the longest existing ancestor, `..` refused),
as must any other absolute path in a command's parameters. Commands that write
where they aren't told are checked against the target they would write: Save /
Increment and Save the open project's file, renderQueue.render every queued
output (renderQueue.list). Scripts, Execute File, Reveal in Finder, Open Recent
by index, `$N` file-path references in a batch, render_frame/screenshot paths
outside a write root and the bridge's UI-driving tools are refused while
confined. docs/mcp.md describes it.
Test: a confined headless server opens and saves inside its roots and is refused
outside them, for a relative path, `..`, a batch step, a `$N` path, Save to a
read-only root's project, the Render Queue's default output there, a symbolic
link out of the write root, and scripts; the unconfined server still writes
anywhere.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QiAJeFttZp83Fh7YuzAR5f
8fb4281632