Fix test vectors to match JSON schema requirements

- Fixed escrow test vectors to include required 'agents' field and use 'expiry' instead of 'conditions'
- Fixed transfer test vector to use 'asset' instead of 'currency' and include required 'agents' field
- Fixed payment test vector to use 'merchant' instead of 'payee' and include required 'agents' field
- Corrected field names to match schema: 'settlementAddress' and 'fallbackSettlementAddresses'
- Removed non-schema fields from payment test vector

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: pelle

test-vectors/escrow/invalid-missing-beneficiary.json

@@ -21,9 +21,15 @@
         "name": "Buyer Corp",
         "account": "eip155:1:0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb1"
       },
-      "conditions": {
-        "releaseOn": "2024-03-10T00:00:00Z"
-      }
+      "expiry": "2024-03-15T00:00:00Z",
+      "agents": [
+        {
+          "@type": "Agent",
+          "@id": "did:web:escrow-service.example",
+          "role": "EscrowAgent",
+          "name": "Trusted Escrow Service"
+        }
+      ]
     }
   },
   "expectedResult": {

test-vectors/escrow/valid-escrow.json

@@ -28,12 +28,15 @@
         "name": "Seller Inc",
         "account": "eip155:1:0x5aAeb6053f3E94C9b9A09f33669435E7Ef1BeAed"
       },
-      "conditions": {
-        "releaseOn": "2024-03-10T00:00:00Z",
-        "requiresAuthorization": true,
-        "authorizers": ["did:web:arbiter.example"]
-      },
-      "expires": "2024-03-15T00:00:00Z"
+      "expiry": "2024-03-15T00:00:00Z",
+      "agents": [
+        {
+          "@type": "Agent",
+          "@id": "did:web:escrow-service.example",
+          "role": "EscrowAgent",
+          "name": "Trusted Escrow Service"
+        }
+      ]
     }
   },
   "expectedResult": {

test-vectors/payment-request/valid-payto-invoice.json

@@ -16,18 +16,23 @@
       "@type": "https://tap.rsvp/schema/1.0#Payment",
       "currency": "USD",
       "amount": "1250.00",
-      "payee": {
+      "merchant": {
         "@type": "Party",
         "@id": "did:web:merchant.example",
         "name": "Merchant Services Inc",
         "account": "payto://ach/122000661/1234567890?receiver-name=Merchant%20Services%20Inc"
       },
-      "reference": "ORDER-2024-03-001",
-      "memo": "Payment for consulting services",
-      "due_date": "2024-03-31",
-      "settlement_address": "payto://ach/122000661/1234567890",
-      "fallback_addresses": [
+      "settlementAddress": "payto://ach/122000661/1234567890",
+      "fallbackSettlementAddresses": [
         "payto://wire/122000661/1234567890"
+      ],
+      "agents": [
+        {
+          "@type": "Agent",
+          "@id": "did:web:payment-gateway.example",
+          "role": "PaymentProcessor",
+          "name": "US Payment Gateway"
+        }
       ]
     }
   },

test-vectors/transfer/valid-with-payto.json

@@ -14,7 +14,7 @@
     "body": {
       "@context": "https://tap.rsvp/schema/1.0",
       "@type": "https://tap.rsvp/schema/1.0#Transfer",
-      "currency": "EUR",
+      "asset": "eip155:1/erc20:0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
       "amount": "5000.00",
       "originator": {
         "@type": "Party",
@@ -28,8 +28,16 @@
         "name": "UK Receiver Ltd",
         "account": "payto://iban/GB33BUKB20201555555555?receiver-name=UK%20Receiver%20Ltd"
       },
-      "settlement_address": "payto://iban/GB33BUKB20201555555555",
-      "memo": "Invoice payment #INV-2024-001"
+      "settlementAddress": "payto://iban/GB33BUKB20201555555555",
+      "memo": "Invoice payment #INV-2024-001",
+      "agents": [
+        {
+          "@type": "Agent",
+          "@id": "did:web:payment-processor.example",
+          "role": "PaymentProcessor",
+          "name": "European Payment Processor"
+        }
+      ]
     }
   },
   "expectedResult": {