What problem does it solve? Building application UI from scratch or from untested snippets leads to broken form semantics, fake persistence states, and inconsistent styling. This Skill supplies actual source-owned React components—forms, panels, empty/loading/error states, and tables—that you copy into your project and adapt, rather than design advice alone. ## Core Features & Use Cases - Source-owned component starter: Six primitive families (Button, Card, Field, Input, Empty, Table) and four working compositions (ProfileForm, ResourceTable, DataState, Panel) adapted from pinned ReUI source with retained MIT notices. - Honest behavior contracts: Forms validate before dispatch, prevent duplicate pending submission, separate rejection from confirmed completion, and never fake remote persistence; tables keep stable IDs and semantic sort state. - Verified isolated demo: Locked dependencies, strict typecheck, 26 Vitest behavior tests, production build, and a local-only preview at 127.0.0.1:5179 for explicitly authorized trials. - Use Case: When asked to scaffold a settings page with a profile form and a searchable resource table, copy the relevant compositions into the host project, wire the callbacks to real application behavior, and run the project's own typecheck and tests. ## Quick Start Ask the agent to use the ReUI starter to add a profile form and resource table to your React project, adapting the source to your existing tokens and wiring the save callback to your real data layer.