Two key validation enhancements have been added to the Word add‑in:
Pre‑generation source validation – The add‑in now checks that every attached source file still exists before a prompt is generated or an AI‑Chat message is sent. If a source is missing, a clear toast message lists the exact file names.
Source‑name validation – In addition to the source ID, the backend now returns the source’s display name. The front‑end compares this name with the one stored on the attachment, catching cases where a template is reused in another project and the same ID points to a different file.

