Adds the OS keyring secret backend and the huh-based TTY Prompter so
PR-4 (auth login) can persist credentials and read interactive input.
The Factory's Client closure SDK wiring + Secrets closure landed in
PR-1's foundation tree to keep PR-1 self-contained.
internal/secrets/keyring.go:
- KeyringStore: zalando/go-keyring backed; namespace "weknora:<context>".
KeyringStore.Ref -> keychain://weknora/<context>/<key>
- NewBestEffortStore probes the OS keyring with a sentinel get and falls
back to FileStore on unsupported platforms (WSL without DBus, etc.)
internal/prompt/tty.go:
- TTYPrompter: huh.NewForm / huh.NewInput / huh.NewConfirm wrapper
satisfying Prompter. Used when iostreams.IO reports both stdout and
stderr are TTYs.
Dependencies (zalando/go-keyring, charmbracelet/huh) are declared in
PR-1's go.mod since the foundation tree referenced them via the Store
interface and TTY-detection helpers.
nullkey