Move shell tool ID checks behind shared helpers so runtime code and tests stop duplicating bash, pwsh, and powershell branches. This keeps shell-specific behavior aligned across consumers and makes follow-on shell changes less error-prone.
Make the shell exit assertions typecheck cleanly while keeping the PowerShell regression coverage. Remove the accidentally committed .opencode package-lock so generated state does not ship in the branch.
Use a multiline PowerShell trailer so native Windows commands keep their actual exit status without masking cmdlet failures, and add focused regression coverage. Remove the accidentally committed .opencode package-lock to keep generated state out of the branch.
LukeParkerDev