Agent identity + credential management infrastructure.

# Install and run
cd vault-api && npm install && npm start
# In another terminal:
cd paybound-cli && npm install
node cli.js orgs create "My Org"

bash demo.sh

The demo will:

• Start the API
• Create an org and agent
• Store credentials
• Retrieve credentials
• Show audit logs
• Revoke stripe and verify access is blocked

curl http://localhost:3001/health

Expected response:

{"status":"ok"}