The search box linked in the current Toolforge nav template only searches in pages whose title starts with ""Help:Tool"" , but there are multiple important pages with Toolforge-related content that don't have the Help: namespace or the Help:Tool... prefix, for example:
https://wikitech.wikimedia.org/wiki/Portal:Toolforge
https://wikitech.wikimedia.org/wiki/Portal:Toolforge/About_Toolforge
https://wikitech.wikimedia.org/wiki/Portal:Toolforge/Contributing
https://wikitech.wikimedia.org/wiki/Portal:Toolforge/Nodes
https://wikitech.wikimedia.org/wiki/Portal:Toolforge/Tool_Accounts
https://wikitech.wikimedia.org/wiki/Wiki_Replicas
https://wikitech.wikimedia.org/wiki/Wikitech:Cloud_Services_End_User_Terms_of_use
https://wikitech.wikimedia.org/wiki/Wikitech:Cloud_Services_Terms_of_use
https://wikitech.wikimedia.org/wiki/Help:Development_recommendations_for_easily_moving_to_production
https://wikitech.wikimedia.org/wiki/Help:Shared_storage
https://wikitech.wikimedia.org/wiki/Help:Glossary
https://wikitech.wikimedia.org/wiki/Help:Access_to_Toolforge_instances_with_PuTTY_and_WinSCP
Perhaps there's a template other than prefix search that we could use, like category search? Otherwise, the only way to search the correct collection of pages would be to (at the very least) rename all the Portal:Toolforge pages to use Help:Toolforge instead.