security: remove confidential business docs from repo

- Removed trusera_angel_qa.docx and trusera_business_plan.docx
- Added *.docx to .gitignore to prevent future accidents

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

Author: Zie619

.gitignore

@@ -34,3 +34,6 @@ demo-video/node_modules/
 # OS
 .DS_Store
 Thumbs.db
+
+# Confidential documents
+*.docx