chore: drop the examples dsh-bash dep left by the removed mock-bash fixture

Nothing under examples/ references @deepseek-ai/dsh-bash now that the
tmux-context fixtures are gone; the examples workspace ignores every
@deepseek-ai/* dependency in knip, so no gate could catch it. This leaves
examples/package.json untouched by the PR.

pnpm-lock.yaml

@@ -412,9 +412,6 @@ importers:
       '@deepseek-ai/dsh-app-boot':
         specifier: workspace:*
         version: link:../packages/ui/app-boot
-      '@deepseek-ai/dsh-bash':
-        specifier: workspace:*
-        version: link:../packages/bash/bash
       '@deepseek-ai/dsh-bash-local':
         specifier: workspace:*
         version: link:../packages/bash/bash-local