Settings ownerless-copy and product-onboarding plugin: registers everything on the Settings surface that belongs to no single feature — the shell's trigger/header/close chrome content, the General section (Permission/Tool Call skeleton rows + the settings.general.item slot declaration), the settings dictionaries, and the first ordered welcome step. Feature-owned rows (Language, Appearance), sections (Models), and conditional onboarding steps stay with their feature packages.

src/onboarding-copy.ts is the single editable owner of the complete Chinese and English notice plus WELCOME_NOTICE_VERSION. The Host half registers ui-onboarding in the user-settings seam; the browser compares welcomeNoticeVersion for exact equality and writes the current value only after Continue succeeds. The path mutation is idempotent across tabs and preserves sibling settings, while host/settings-changed makes an externally acknowledged notice advance without a reload. A different version deliberately presents the notice again. The welcome UI has no close, Escape, mask-click, or secondary path, and none of its copy or acknowledgement enters a Session log or model request.

Model Experience

None, as the plugin renders browser settings UI; nothing here reaches a model request.

KV Cache effect

None; this package neither assembles nor sends a provider request.

Known Limitations and Deferred Work

Permission and Tool Call are display skeletons — the backing host services and RPC methods do not exist yet; the controls are disabled and write nothing. When they gain real backing, each moves to its owning feature plugin per the self-registration doctrine.