fix(InlineInput): focus management

[tenphi]

Note

Medium Risk
Focus and blur/commit behavior changed for a shared UI primitive; regressions could affect keyboard navigation and embedded hosts (e.g. Tabs with keyboardActivation=false).

Overview
Fixes InlineInput keyboard focus so the display ring cannot stick after edit ends, tab-away, or blur commits, and so standalone keyboard users get sensible focus return without a spurious ring.

Focus ring: useFocusWithin now tracks whether focus is actually inside the control (including an element-removal fallback useFocusRing lacked on the display span). Display-mode data-focused requires isFocusVisible, isFocusWithin, and editable state; a one-shot ringSuppressed hides the ring after programmatic focus restore. onBlurWithin ignores spurious blurs when entering edit mode and calls commit(draft, false) on real blur so focus is not pulled back.

Focus restore: After Enter/Escape (and similar edit-ends when keyboardActivation is on), a layout effect returns focus to the root span unless onSubmit/onCancel already moved focus elsewhere. Submit-on-blur does not restore.

Tests cover Enter commit focus return, handler-owned focus, and ring clearing when focus leaves during editing.

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Project	Deployment	Actions	Updated (UTC)
cube-ui-kit	Ready	Preview, Comment	Jun 5, 2026 1:38pm

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