Ensure worktree init writes PAPERCLIP_AGENT_JWT_SECRET into the new .paperclip/.env when the source instance already has a usable secret loaded or configured. Also harden the affected integration tests against shell env leakage and full-suite timeout pressure.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Run pnpm install in the new worktree directory before initializing the
Paperclip instance so that node_modules are ready when the init step runs.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
