```

chore: remove obsolete payment architecture and integration test documentation

- Remove AITBC_PAYMENT_ARCHITECTURE.md (dual-currency system documentation)
- Remove IMPLEMENTATION_COMPLETE_SUMMARY.md (integration test completion summary)
- Remove INTEGRATION_TEST_FIXES.md (test fixes documentation)
- Remove INTEGRATION_TEST_UPDATES.md (real features implementation notes)
- Remove PAYMENT_INTEGRATION_COMPLETE.md (wallet-coordinator integration docs)
- Remove WALLET_COORDINATOR_INTEGRATION.md (payment

apps/coordinator-api/src/app/schemas.py

@@ -3,12 +3,75 @@ from __future__ import annotations
 from datetime import datetime
 from typing import Any, Dict, Optional, List
 from base64 import b64encode, b64decode
+from enum import Enum
 
 from pydantic import BaseModel, Field, ConfigDict
 
 from .types import JobState, Constraints
 
 
+# Payment schemas
+class JobPaymentCreate(BaseModel):
+    """Request to create a payment for a job"""
+    job_id: str
+    amount: float
+    currency: str = "AITBC"  # Jobs paid with AITBC tokens
+    payment_method: str = "aitbc_token"  # Primary method for job payments
+    escrow_timeout_seconds: int = 3600  # 1 hour default
+
+
+class JobPaymentView(BaseModel):
+    """Payment information for a job"""
+    job_id: str
+    payment_id: str
+    amount: float
+    currency: str
+    status: str
+    payment_method: str
+    escrow_address: Optional[str] = None
+    refund_address: Optional[str] = None
+    created_at: datetime
+    updated_at: datetime
+    released_at: Optional[datetime] = None
+    refunded_at: Optional[datetime] = None
+    transaction_hash: Optional[str] = None
+    refund_transaction_hash: Optional[str] = None
+
+
+class PaymentRequest(BaseModel):
+    """Request to pay for a job"""
+    job_id: str
+    amount: float
+    currency: str = "BTC"
+    refund_address: Optional[str] = None
+
+
+class PaymentReceipt(BaseModel):
+    """Receipt for a payment"""
+    payment_id: str
+    job_id: str
+    amount: float
+    currency: str
+    status: str
+    transaction_hash: Optional[str] = None
+    created_at: datetime
+    verified_at: Optional[datetime] = None
+
+
+class EscrowRelease(BaseModel):
+    """Request to release escrow payment"""
+    job_id: str
+    payment_id: str
+    reason: Optional[str] = None
+
+
+class RefundRequest(BaseModel):
+    """Request to refund a payment"""
+    job_id: str
+    payment_id: str
+    reason: str
+
+
 # User management schemas
 class UserCreate(BaseModel):
     email: str