Request: Provide a unified HAR authentication flow: one CLI login (using harness auth login --sso) stores a HAR-compatible user credential in the native OS credential store, and HAR config configures package-manager-specific integrations that reference that single credential. Expected Behavior: Reuse an active Harness browser session during login when security policy permits, avoiding redundant sign-in. Store the credential in macOS Keychain, Windows Credential Manager, or Linux Secret Service, with no plaintext fallback. Automatically configure supported credential integrations for pnpm, pip, Docker, and other package managers. Ordinary package-manager commands should work without token exports, plaintext credentials, or a CLI execution wrapper. Allow developers to configure only the registries and package types they need, all referencing the shared credential. Apply credential rotation across integrations. Removing a registry configuration must not delete the shared credential; explicit logout should remove it. Preserve existing HAR permissions and clearly document package-manager limitations, including npm’s lack of a native credential-helper hook. Benefit: One login enables secure, consistent access across permitted HAR registries, with minimal manual setup.