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/tenancy/routes/api/admin_merchant_domains.py

@@ -249,7 +249,7 @@ def verify_merchant_domain_ownership(
     Verify merchant domain ownership via DNS TXT record (Admin only).
 
     **Verification Process:**
-    1. Queries DNS for TXT record: `_wizamart-verify.{domain}`
+    1. Queries DNS for TXT record: `_orion-verify.{domain}`
     2. Checks if verification token matches
     3. If found, marks domain as verified
 

app/modules/tenancy/routes/api/admin_store_domains.py

@@ -247,14 +247,14 @@ def verify_domain_ownership(
     Verify domain ownership via DNS TXT record (Admin only).
 
     **Verification Process:**
-    1. Queries DNS for TXT record: `_wizamart-verify.{domain}`
+    1. Queries DNS for TXT record: `_orion-verify.{domain}`
     2. Checks if verification token matches
     3. If found, marks domain as verified
 
     **Requirements:**
     - Store must have added TXT record to their DNS
     - DNS propagation may take 5-15 minutes
-    - Record format: `_wizamart-verify.domain.com` TXT `{token}`
+    - Record format: `_orion-verify.domain.com` TXT `{token}`
 
     **After verification:**
     - Domain can be activated

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

@@ -42,7 +42,7 @@ def get_store_info(
     **Returns only active stores** to prevent access to disabled accounts.
 
     Args:
-        store_code: The store's unique code (e.g., 'WIZAMART')
+        store_code: The store's unique code (e.g., 'ORION')
         db: Database session
 
     Returns: