win: improve script environment robustness #221

This commit ensures the script functions as expected, even when invoked
from unexpected environments.

Using `setlocal` initializes a distinct environment for privacy.sexy.
It's strategically placed after the admin privilege check to avoid
unnecessary setup in case of a relaunch. The script concludes with
`endlocal` right before the exit, maintaining a clean environment
throughout its execution and ensuring no unintentional global
environment modifications.

Changes:

- Enhance script's environment robustness.
- Add descriptive comments for script start/end sequences.

src/application/collections/windows.yaml

@@ -14,8 +14,14 @@ scripting:
             )
             exit 0
         )
+        :: Initialize environment
+        setlocal EnableExtensions DisableDelayedExpansion
     endCode: |-
+        :: Pause the script to view the final state
         pause
+        :: Restore previous environment settings
+        endlocal
+        :: Exit the script successfully
         exit /b 0
 actions:
     -