Testing the editor E2E harness

Devin Secrets Needed

None.

Environment

• Work from frontend/packages/editor.
• Use Node 22.22.x and the pnpm fallback at /home/ubuntu/.local/bin/pnpm if mise/corepack is rate-limited.
• The harness uses Vite: pnpm test:harness runs vite --config e2e/vite.config.ts on http://localhost:5180.

Running the harness

export PATH="/home/ubuntu/.local/bin:/home/ubuntu/.local/share/mise/installs/node/22.22.0/bin:$PATH"
cd /home/ubuntu/repos/seed/frontend/packages/editor
pnpm test:harness