Hello,
The CCS represents the connection server used by the CodeWarrior to "talk" with the target (the MSC8156ADS board).
The TCL scripts design for Debugger Shell are not 100% compatible with the CCS TCL scripting, but basically you can reuse the CCS available commands to write a script to load and start a program on the target via the CCS without IDE.
Nonetheless, this is a complicated task, you will need to emulate the CW debugger behavior with CCS low level commands.
To see the list of available CCS commands, just open a CCS console and type "ccs::"
Hope this helps & Good luck!
Daniel