chore(input): replace empty interface with type alias to satisfy ESLint

Author: christoph2806

docs/project_plan.md

@@ -22,12 +22,12 @@ A pragmatic breakdown into **four one‑week sprints** plus a preparatory **Spri
 
 | #    | Task                                                                                                  | DoD                                                                      | Status |
 | ---- | ----------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------ | ------ |
-| 1.0a | **Folder restructure** – adopt `src/components/primitives`, `layout`, `hooks`, `providers` hierarchy. | `pnpm build` & `pnpm test` pass after move; no unresolved imports in TS. |        |
-| 1.0b | Migrate **Button** files into `components/primitives/Button/`; delete legacy `core/Button`.           | Storybook & unit tests green at the new path.                            |        |
-| 1.0c | Update barrels (`src/components/index.ts`, root `src/index.ts`) and **adjust all imports**.           | `pnpm lint` shows 0 errors; grep finds no `from "./core"`.               |        |
+| 1.0a | **Folder restructure** – adopt `src/components/primitives`, `layout`, `hooks`, `providers` hierarchy. | `pnpm build` & `pnpm test` pass after move; no unresolved imports in TS. | ✓      |
+| 1.0b | Migrate **Button** files into `components/primitives/Button/`; delete legacy `core/Button`.           | Storybook & unit tests green at the new path.                            | ✓      |
+| 1.0c | Update barrels (`src/components/index.ts`, root `src/index.ts`) and **adjust all imports**.           | `pnpm lint` shows 0 errors; grep finds no `from "./core"`.               | ✓      |
 | 1.1a | Create basic **Button** component structure.                                                          | Component file exists with basic props and types.                        | ✓      |
-| 1.1b | Complete **Button** implementation with tests and stories.                                            | Vitest basic unit tests, Storybook MDX story with ArgsTable.             |        |
-| 1.1c | Implement **TextInput** wrapper in `/src/core`.                                                       | Vitest basic unit tests, Storybook MDX story with ArgsTable.             |        |
+| 1.1b | Complete **Button** implementation with tests and stories.                                            | Vitest basic unit tests, Storybook MDX story with ArgsTable.             | ✓      |
+| 1.1c | Implement **TextInput** wrapper in `src/components/primitives`.                                       | Vitest basic unit tests, Storybook docs (autodocs) & unit tests.         | ✓      |
 | 1.2a | Set up basic Storybook configuration.                                                                 | `npm run storybook` starts successfully.                                 | ✓      |
 | 1.2b | Install and configure Storybook addon‑docs.                                                           | Documentation tab shows component documentation.                         | ✓      |
 | 1.2c | Configure and verify Storybook addon‑a11y.                                                            | axe‑a11y addon shows zero violations.                                    |        |

packages/ui-kit/src/components/ui/input.tsx

@@ -0,0 +1,23 @@
+import * as React from "react";
+import { cn } from "@/utils/cn";
+
+export type InputProps = React.InputHTMLAttributes<HTMLInputElement>;
+
+const Input = React.forwardRef<HTMLInputElement, InputProps>(
+    ({ className, type, ...props }, ref) => {
+        return (
+            <input
+                type={type}
+                className={cn(
+                    "flex h-9 w-full rounded-md border border-input bg-background px-3 py-1 text-sm shadow-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50",
+                    className
+                )}
+                ref={ref}
+                {...props}
+            />
+        );
+    }
+);
+Input.displayName = "Input";
+
+export { Input };