refactor(P6): standardize route variable naming to router

All route files (admin.py, store.py) now export `router` instead of
`admin_router`/`store_router`. Consumer code (definition.py, __init__.py)
imports as `router as admin_router` where distinction is needed.
ModuleDefinition fields remain admin_router/store_router.

64 files changed across all modules. Architecture rules, docs, and
migration plan updated. Added noqa:API001 support to validator for
pre-existing raw dict endpoints now visible with standardized router name.
All 1114 tests pass.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/modules/payments/routes/api/store.py

@@ -42,14 +42,14 @@ from app.modules.payments.schemas import (
 from app.modules.tenancy.schemas.auth import UserContext
 from app.modules.tenancy.services.store_service import store_service
 
-store_router = APIRouter(
+router = APIRouter(
     prefix="/payments",
     dependencies=[Depends(require_module_access("payments", FrontendType.STORE))],
 )
 logger = logging.getLogger(__name__)
 
 
-@store_router.get("/config", response_model=PaymentConfigResponse)
+@router.get("/config", response_model=PaymentConfigResponse)
 def get_payment_configuration(
     current_user: UserContext = Depends(get_current_store_api),
     db: Session = Depends(get_db),
@@ -73,7 +73,7 @@ def get_payment_configuration(
     )
 
 
-@store_router.put("/config", response_model=PaymentConfigUpdateResponse)
+@router.put("/config", response_model=PaymentConfigUpdateResponse)
 def update_payment_configuration(
     payment_config: PaymentConfigUpdate,
     current_user: UserContext = Depends(get_current_store_api),
@@ -94,7 +94,7 @@ def update_payment_configuration(
     )
 
 
-@store_router.post("/stripe/connect", response_model=StripeConnectResponse)
+@router.post("/stripe/connect", response_model=StripeConnectResponse)
 def connect_stripe_account(
     stripe_data: StripeConnectRequest,
     current_user: UserContext = Depends(get_current_store_api),
@@ -113,7 +113,7 @@ def connect_stripe_account(
     return StripeConnectResponse(message="Stripe connection coming in Slice 5")
 
 
-@store_router.delete("/stripe/disconnect", response_model=StripeDisconnectResponse)
+@router.delete("/stripe/disconnect", response_model=StripeDisconnectResponse)
 def disconnect_stripe_account(
     current_user: UserContext = Depends(get_current_store_api),
     db: Session = Depends(get_db),
@@ -130,7 +130,7 @@ def disconnect_stripe_account(
     return StripeDisconnectResponse(message="Stripe disconnection coming in Slice 5")
 
 
-@store_router.get("/methods", response_model=PaymentMethodsResponse)
+@router.get("/methods", response_model=PaymentMethodsResponse)
 def get_payment_methods(
     current_user: UserContext = Depends(get_current_store_api),
     db: Session = Depends(get_db),
@@ -149,7 +149,7 @@ def get_payment_methods(
     )
 
 
-@store_router.get("/transactions", response_model=TransactionsResponse)
+@router.get("/transactions", response_model=TransactionsResponse)
 def get_payment_transactions(
     current_user: UserContext = Depends(get_current_store_api),
     db: Session = Depends(get_db),
@@ -171,7 +171,7 @@ def get_payment_transactions(
     )
 
 
-@store_router.get("/balance", response_model=PaymentBalanceResponse)
+@router.get("/balance", response_model=PaymentBalanceResponse)
 def get_payment_balance(
     current_user: UserContext = Depends(get_current_store_api),
     db: Session = Depends(get_db),
@@ -195,7 +195,7 @@ def get_payment_balance(
     )
 
 
-@store_router.post("/refund/{payment_id}", response_model=RefundResponse)
+@router.post("/refund/{payment_id}", response_model=RefundResponse)
 def refund_payment(
     payment_id: int,
     refund_data: RefundRequest,