move-server.sh: --tools-dir for agent installs and /tmp on a separate disk

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -103,6 +103,9 @@ copies the workspace, stops CodeCraft, streams the data volume to `<dir>/data`,
 `docker-compose.yml` (and a `start.sh` for hosts without Compose) with bind mounts, starts the
 published image there and runs `scripts/smoke-test.sh`. The old container is only stopped, so
 you can roll back. `--help` lists the options (owner, port, bind address, dry run).
+`--tools-dir /mnt/disks/ssd/codecraft` puts everything agents install or download – the agent
+home (`/data/home`: toolchains, pip/npm/cargo packages, caches), the users' homes and `/tmp` – on
+a separate disk; the data folder keeps only the database, configuration and backups.
 
 ## How it works