sbx: clarify sandbox auto-naming in docs

content/manuals/ai/sandboxes/get-started.md

@@ -199,7 +199,7 @@ directory without touching your main working tree.
 When the session ends, review what the agent did from the worktree:
 
 ```console
-$ cd .sbx/<sandbox-name>-worktrees/my-feature
+$ cd .sbx/claude-my-project-worktrees/my-feature
 $ git log
 $ git diff main
 ```
@@ -243,15 +243,19 @@ set and how to customize it.
 Sandboxes persist after the agent exits. To stop a sandbox without deleting it:
 
 ```console
-$ sbx stop my-sandbox
+$ sbx stop claude-my-project
 ```
 
+The sandbox name comes from the agent and workspace directory — see
+[Reconnecting and naming](usage.md#reconnecting-and-naming) for details, or run
+`sbx ls` to see the names of your existing sandboxes.
+
 Installed packages, Docker images, and configuration changes are preserved
 across restarts. When you're done with a sandbox, remove it to reclaim disk
 space:
 
 ```console
-$ sbx rm my-sandbox
+$ sbx rm claude-my-project
 ```
 
 Removing a sandbox deletes everything inside it — installed packages, Docker