fix: declare pnpm workspace packages

[cayo-aura]

What changed

• Declares the root package in pnpm-workspace.yaml with packages: ['.'].
• Keeps the existing allowBuilds approvals for Electron, esbuild, and related install scripts.

Why

A fresh clone currently fails before dependencies can be installed:

git clone https://github.com/outsourc-e/hermes-workspace.git
cd hermes-workspace
pnpm install

pnpm exits with:

ERROR packages field missing or empty

The workspace file exists, but it only contains allowBuilds. pnpm expects a non-empty packages field when pnpm-workspace.yaml is present.

Verification

Validated in a clean clone:

pnpm install --frozen-lockfile
cp .env.example .env
printf '\nHERMES_API_URL=http://127.0.0.1:8642\nHERMES_DASHBOARD_URL=http://127.0.0.1:9119\n' >> .env
PORT=4300 pnpm dev

Result: install completes successfully and Vite starts at http://localhost:4300/.