fix(workstreams): remove unnecessary Write from allowed-tools (#1637) (#1642)

The workstreams command only delegates to `node "$GSD_TOOLS"` via Bash
and formats JSON output. No Write calls appear anywhere in the command body.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

commands/gsd/workstreams.md

@@ -3,7 +3,6 @@ name: gsd:workstreams
 description: Manage parallel workstreams — list, create, switch, status, progress, complete, and resume
 allowed-tools:
   - Read
-  - Write
   - Bash
 ---