Manual written test cases will help at the first execution 
of the build and it will be consumed upto the get the 
stable build. It includes all the validations and the 
behaviour of the application . In this scripts the 
Navigation steps should be clear.

Automation of scripts will happens after getting stable 
build to test regression effects. The same scripts which we 
executed manually will be used for automation. Based on the 
expected values we will be placing the check points. 
Automation is not a creation of test cases but same written 
test cases will be automated by record and play back 
option.