DSH model-facing Office tools: create, read, and update Word (.docx), Excel (.xlsx), and PowerPoint (.pptx) files inside the session workspace, entirely through the official DSH filesystem service.

Requires dsh >= 0.1.7 (session format 4); on dsh 0.1.5 use dsh-repeat-tool-breaker@0.7. Escalating repeat detection for dsh: a synchronous ctx.tools.guard gate that counts semantic fingerprints (exact/cmd/net/host/sink) over a per-agent sliding window, wa