```

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/domain/__init__.py

@@ -3,8 +3,9 @@
 from .job import Job
 from .miner import Miner
 from .job_receipt import JobReceipt
-from .marketplace import MarketplaceOffer, MarketplaceBid, OfferStatus
+from .marketplace import MarketplaceOffer, MarketplaceBid
 from .user import User, Wallet
+from .payment import JobPayment, PaymentEscrow
 
 __all__ = [
     "Job",
@@ -12,7 +13,8 @@ __all__ = [
     "JobReceipt",
     "MarketplaceOffer",
     "MarketplaceBid",
-    "OfferStatus",
     "User",
     "Wallet",
+    "JobPayment",
+    "PaymentEscrow",
 ]

apps/coordinator-api/src/app/domain/job.py

@@ -4,17 +4,18 @@ from datetime import datetime
 from typing import Optional
 from uuid import uuid4
 
-from sqlalchemy import Column, JSON, String
-from sqlmodel import Field, SQLModel, Relationship
-
-from ..types import JobState
+from sqlalchemy import Column, JSON, String, ForeignKey
+from sqlalchemy.orm import Mapped, relationship
+from sqlmodel import Field, SQLModel
 
 
 class Job(SQLModel, table=True):
+    __tablename__ = "job"
+    
     id: str = Field(default_factory=lambda: uuid4().hex, primary_key=True, index=True)
     client_id: str = Field(index=True)
 
-    state: JobState = Field(default=JobState.queued, sa_column_kwargs={"nullable": False})
+    state: str = Field(default="QUEUED", max_length=20)
     payload: dict = Field(sa_column=Column(JSON, nullable=False))
     constraints: dict = Field(default_factory=dict, sa_column=Column(JSON, nullable=False))
 
@@ -30,8 +31,8 @@ class Job(SQLModel, table=True):
     error: Optional[str] = None
     
     # Payment tracking
-    payment_id: Optional[str] = Field(default=None, foreign_key="job_payments.id", index=True)
+    payment_id: Optional[str] = Field(default=None, sa_column=Column(String, ForeignKey("job_payments.id"), index=True))
     payment_status: Optional[str] = Field(default=None, max_length=20)  # pending, escrowed, released, refunded
     
     # Relationships
-    payment: Optional["JobPayment"] = Relationship(back_populates="jobs")
+    # payment: Mapped[Optional["JobPayment"]] = relationship(back_populates="jobs")

apps/coordinator-api/src/app/domain/marketplace.py

@@ -1,27 +1,20 @@
 from __future__ import annotations
 
 from datetime import datetime
-from enum import Enum
 from typing import Optional
 from uuid import uuid4
 
-from sqlalchemy import Column, Enum as SAEnum, JSON
+from sqlalchemy import Column, JSON
 from sqlmodel import Field, SQLModel
 
 
-class OfferStatus(str, Enum):
-    open = "open"
-    reserved = "reserved"
-    closed = "closed"
-
-
 class MarketplaceOffer(SQLModel, table=True):
     id: str = Field(default_factory=lambda: uuid4().hex, primary_key=True)
     provider: str = Field(index=True)
     capacity: int = Field(default=0, nullable=False)
     price: float = Field(default=0.0, nullable=False)
     sla: str = Field(default="")
-    status: OfferStatus = Field(default=OfferStatus.open, sa_column=Column(SAEnum(OfferStatus), nullable=False))
+    status: str = Field(default="open", max_length=20)
     created_at: datetime = Field(default_factory=datetime.utcnow, nullable=False, index=True)
     attributes: dict = Field(default_factory=dict, sa_column=Column(JSON, nullable=False))
 

apps/coordinator-api/src/app/domain/payment.py

@@ -6,10 +6,9 @@ from datetime import datetime
 from typing import Optional, List
 from uuid import uuid4
 
-from sqlalchemy import Column, String, DateTime, Numeric, ForeignKey
-from sqlmodel import Field, SQLModel, Relationship
-
-from ..schemas.payments import PaymentStatus, PaymentMethod
+from sqlalchemy import Column, String, DateTime, Numeric, ForeignKey, JSON
+from sqlalchemy.orm import Mapped, relationship
+from sqlmodel import Field, SQLModel
 
 
 class JobPayment(SQLModel, table=True):
@@ -23,8 +22,8 @@ class JobPayment(SQLModel, table=True):
     # Payment details
     amount: float = Field(sa_column=Column(Numeric(20, 8), nullable=False))
     currency: str = Field(default="AITBC", max_length=10)
-    status: PaymentStatus = Field(default=PaymentStatus.PENDING)
-    payment_method: PaymentMethod = Field(default=PaymentMethod.AITBC_TOKEN)
+    status: str = Field(default="pending", max_length=20)
+    payment_method: str = Field(default="aitbc_token", max_length=20)
     
     # Addresses
     escrow_address: Optional[str] = Field(default=None, max_length=100)
@@ -43,10 +42,10 @@ class JobPayment(SQLModel, table=True):
     expires_at: Optional[datetime] = None
     
     # Additional metadata
-    metadata: Optional[dict] = Field(default=None)
+    meta_data: Optional[dict] = Field(default=None, sa_column=Column(JSON))
     
     # Relationships
-    jobs: List["Job"] = Relationship(back_populates="payment")
+    # jobs: Mapped[List["Job"]] = relationship(back_populates="payment")
 
 
 class PaymentEscrow(SQLModel, table=True):

apps/coordinator-api/src/app/domain/user.py

@@ -6,13 +6,6 @@ from sqlmodel import SQLModel, Field, Relationship, Column
 from sqlalchemy import JSON
 from datetime import datetime
 from typing import Optional, List
-from enum import Enum
-
-
-class UserStatus(str, Enum):
-    ACTIVE = "active"
-    INACTIVE = "inactive"
-    SUSPENDED = "suspended"
 
 
 class User(SQLModel, table=True):
@@ -20,7 +13,7 @@ class User(SQLModel, table=True):
     id: str = Field(primary_key=True)
     email: str = Field(unique=True, index=True)
     username: str = Field(unique=True, index=True)
-    status: UserStatus = Field(default=UserStatus.ACTIVE)
+    status: str = Field(default="active", max_length=20)
     created_at: datetime = Field(default_factory=datetime.utcnow)
     updated_at: datetime = Field(default_factory=datetime.utcnow)
     last_login: Optional[datetime] = None
@@ -44,28 +37,13 @@ class Wallet(SQLModel, table=True):
     transactions: List["Transaction"] = Relationship(back_populates="wallet")
 
 
-class TransactionType(str, Enum):
-    DEPOSIT = "deposit"
-    WITHDRAWAL = "withdrawal"
-    PURCHASE = "purchase"
-    REWARD = "reward"
-    REFUND = "refund"
-
-
-class TransactionStatus(str, Enum):
-    PENDING = "pending"
-    COMPLETED = "completed"
-    FAILED = "failed"
-    CANCELLED = "cancelled"
-
-
 class Transaction(SQLModel, table=True):
     """Transaction model"""
     id: str = Field(primary_key=True)
     user_id: str = Field(foreign_key="user.id")
     wallet_id: Optional[int] = Field(foreign_key="wallet.id")
-    type: TransactionType
-    status: TransactionStatus = Field(default=TransactionStatus.PENDING)
+    type: str = Field(max_length=20)
+    status: str = Field(default="pending", max_length=20)
     amount: float
     fee: float = Field(default=0.0)
     description: Optional[str] = None