If after importing an Alloy project into Titanium Studio, none of the Run/Debug options are available (iPhone Simulator, Android Emulator, etc), then you need to do a simple config change to get Studio to recognize your Alloy project as such.
- Open the project in App Explorer, and go to Project > Properties
- In the left pane of the Properties window, select Project Natures
- Check the boxes next to Alloy and Mobile
- Select Alloy again, and click the box that says Make Primary
It should look like this: