chore: changeset for action error message fix

Author: baozhoutao

.changeset/action-error-clean-message.md

@@ -0,0 +1,16 @@
+---
+'@objectstack/runtime': patch
+---
+
+fix(runtime): surface the clean business message from a failed action, not the sandbox debug wrapper
+
+A user throw inside a script/action body is wrapped by the sandbox as
+`<kind> '<name>' threw: <msg>` for server logs, but the action HTTP endpoint
+returned that whole wrapper as the client-facing `error` — so an action's error
+toast leaked the debug prefix to end users (e.g. `action 'lead_apply_convert'
+threw: Error: 线索信息不完整…` instead of just `线索信息不完整…`).
+
+`SandboxError` now also carries `innerMessage`: the plain business message with
+no `<kind> '<name>' threw:` wrapper and no default `Error: ` name prefix. The
+action route surfaces `innerMessage` to the client and keeps the full wrapper in
+the server log.