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>

.gitlab-ci.yml

@@ -43,13 +43,13 @@ pytest:
       alias: postgres
   variables:
     # PostgreSQL service configuration
-    POSTGRES_DB: wizamart_test
+    POSTGRES_DB: orion_test
     POSTGRES_USER: test_user
     POSTGRES_PASSWORD: test_password
     # Application database URL for tests
-    TEST_DATABASE_URL: "postgresql://test_user:test_password@postgres:5432/wizamart_test"
+    TEST_DATABASE_URL: "postgresql://test_user:test_password@postgres:5432/orion_test"
     # Skip database validation during import (tests use TEST_DATABASE_URL)
-    DATABASE_URL: "postgresql://test_user:test_password@postgres:5432/wizamart_test"
+    DATABASE_URL: "postgresql://test_user:test_password@postgres:5432/orion_test"
   before_script:
     - pip install uv
     - uv sync --frozen