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/cms/routes/pages/platform.py

@@ -165,8 +165,8 @@ async def homepage(
         logger.info(f"[HOMEPAGE] Rendering CMS homepage with template: {template_path}")
         return templates.TemplateResponse(template_path, context)
 
-    # Fallback: Default wizamart homepage (no CMS content)
-    logger.info("[HOMEPAGE] No CMS homepage found, using default wizamart template")
+    # Fallback: Default orion homepage (no CMS content)
+    logger.info("[HOMEPAGE] No CMS homepage found, using default orion template")
     context = get_platform_context(request, db)
     context["tiers"] = _get_tiers_data(db)
 
@@ -204,7 +204,7 @@ async def homepage(
     ]
 
     return templates.TemplateResponse(
-        "cms/platform/homepage-wizamart.html",
+        "cms/platform/homepage-orion.html",
         context,
     )