refactor: rename Wizamart to Orion across entire codebase

Replace all ~1,086 occurrences of Wizamart/wizamart/WIZAMART/WizaMart
with Orion/orion/ORION across 184 files. This includes database
identifiers, email addresses, domain references, R2 bucket names,
DNS prefixes, encryption salt, Celery app name, config defaults,
Docker configs, CI configs, documentation, seed data, and templates.

Renames homepage-wizamart.html template to homepage-orion.html.
Fixes duplicate file_pattern key in api.yaml architecture rule.

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

app/modules/orders/exceptions.py

@@ -12,9 +12,9 @@ from typing import Any
 
 from app.exceptions.base import (
     BusinessLogicException,
+    OrionException,
     ResourceNotFoundException,
     ValidationException,
-    WizamartException,
 )
 
 __all__ = [
@@ -182,7 +182,7 @@ class InvoiceSettingsNotFoundException(ResourceNotFoundException):
         )
 
 
-class InvoiceSettingsAlreadyExistException(WizamartException):  # noqa: MOD-025
+class InvoiceSettingsAlreadyExistException(OrionException):  # noqa: MOD-025
     """Raised when trying to create invoice settings that already exist."""
 
     def __init__(self, store_id: int):
@@ -205,7 +205,7 @@ class InvoiceValidationException(BusinessLogicException):
         )
 
 
-class InvoicePDFGenerationException(WizamartException):
+class InvoicePDFGenerationException(OrionException):
     """Raised when PDF generation fails."""
 
     def __init__(self, invoice_id: int, reason: str):