Fix backend: add passlib/bcrypt, fix datetime timezone issues

backend/requirements-windows.txt

@@ -0,0 +1,30 @@
+# FastAPI and dependencies
+fastapi==0.109.2
+uvicorn[standard]==0.27.1
+python-multipart==0.0.9
+
+# Pydantic with pre-built wheels
+pydantic==2.6.1
+pydantic-settings==2.1.0
+pydantic-core==2.16.2
+annotated-types==0.6.0
+
+# Database
+sqlalchemy[asyncio]==2.0.27
+asyncpg==0.29.0
+alembic==1.13.1
+
+# Authentication
+python-jose[cryptography]==3.3.0
+passlib[bcrypt]==1.7.4
+bcrypt==4.1.2
+
+# Security
+cryptography==42.0.2
+
+# Email validation
+email-validator==2.1.0.post1
+
+# Others
+starlette==0.36.3
+typing-extensions==4.9.0