Paste Service API

POST /api/paste
  Create a new paste with expiration
  Body: {
    "content": "your content here",
    "expirationSeconds": 3600,
    "oneTimeView": false (optional, default: false)
  }
  Returns: {
    "id": "abc123",
    "url": "https://paste.yoursite.com/abc123",
    "expiresAt": "2024-01-01T12:00:00Z",
    "expirationSeconds": 3600,
    "oneTimeView": false
  }

GET /:id
  Retrieve a paste by ID
  Returns: The paste content as HTML
  Note: One-time view pastes are automatically deleted after first access