- The shell command processor was incorrectly truncating the first
character of the command (e.g., 'ls' became 's') due to an
erroneous `slice(1)` operation, likely introduced during a
previous merge. This change removes the slice, ensuring the full
command is processed.
- Introduces unit tests for the shellCommandProcessor hook.
- Fixes a minor grammatical issue in the display of GEMINI.md file count.
