Get deal by ID

Returns a single deal/opportunity by its unique identifier.

Note: The amount field is stored in cents with no decimals. The response includes an amount_display object for convenience:

"amount": "5522699",
"amount_display": {
  "formatted": "$55.23K",   // Human-readable string
  "value": 55226.99,        // Numeric value in dollars with cents as decimal
  "currency": "USD",
  "unit": "cents"           // Unit of the raw amount field
}