Refactor Helper application logic to use services instead of commands

[shannah]

Summary

Updated the Helper application installation logic to reference "services" instead of "commands" for consistency with the actual service management functionality.

Key Changes

• Renamed commandsExist variable to servicesExist to better reflect what is being checked
• Changed the condition from checking allCommands to checking newServiceCommands
• Updated comments to use "service management" and "services" terminology instead of "command management" and "commands"
• Simplified the update logic: updateHelperApplication() now receives servicesExist directly instead of always passing true, allowing the Helper to be properly removed when no services exist (during updates)

Implementation Details

• The Helper application installation now correctly depends on the presence of newServiceCommands rather than allCommands
• For updates, the Helper removal is now conditional based on whether services exist, whereas previously it was always kept installed
• Comments clarify that Helper removal only occurs during uninstall operations
• The logic maintains the same behavior for branch installations (Helper skipped) and fresh installs without services (no action taken)

https://claude.ai/code/session_01YZD1d7n14sQ65gxweMWY8X