`[trash] enabled` now reaches `delete_path` through the bound instance's
workspace policy, the same channel `[agent] path_denylist` already travels: set
when the session state is built and re-read by `reload_config_from_disk`, so a
config reload in the middle of a chat changes the next delete too.
The policy flag is what `delete_path` consults, so a host that never sets it
gets the safe default (deletes go to the trash) instead of a silent no-op.
`delete_path` is the only destructive file entry point the agent has, and it
carries `ToolTag.YOLO` — under `--yes` / `/yolo` it runs with no confirmation at
all. A delete is now a move into the desktop's own trash (freedesktop trash on
Linux, Finder trash on macOS, Recycle Bin on Windows) through `send2trash`, so
the human can put the file back with the file manager they already have. The new
`permanent=true` argument is the old behaviour, chosen on purpose.
A trashing that fails is reported, never downgraded to a deletion: the human was
told the path is recoverable, so a volume with no writable trash directory
leaves the file where it is and the error names `permanent=true` as the way to
delete it anyway. A broken install (the library is a required dependency) is
reported the same way.
Scratch paths under the OS temporary directory are still deleted for good —
nobody restores them, and a trash on the `/tmp` volume would only collect them.
The rule now lives in `tools/trash.py` (`under_system_temp`) and the temporary
workspace cleanup uses it too, instead of keeping a second copy of the check.
NCBM