Reorganize twenty-ui into best-practice component domains and per-component folders (#21745)

Reorganizes `twenty-ui`'s component organization to follow how the best
UI libraries (MUI, Mantine, Base UI, Polaris) structure their source,
now that the package has stabilized.

**Taxonomy** — dissolves the meaningless `components/` junk-drawer and
the 107-file `display/` mega-category. New domains/subpaths:
`data-display`, `typography`, `icon`, `surfaces`; `feedback` and
`layout` absorb the rest (banners/callout/info + placeholders →
feedback; modal/card → surfaces; motion + separators → layout).

**Per-component layout** — every component is now
`<domain>/<ComponentName>/<ComponentName>.tsx` with colocated
styles/stories/types, `internal/` for private helpers and `parts/` for
re-exported compound sub-parts. The redundant inner `/components/` is
gone. `icon` and `json-visualizer` are kept as cohesive subsystems.

**Also:** adds a tree-shakeable root barrel (`import { Button } from
'twenty-ui'`), the generator now owns `individual-entry.ts`, and a real
barrel-leak bug is fixed (private `internals/` parts were leaking into
the public API).

Consumer imports (~1.2k files) and the `twenty-sdk` UI aggregator were
updated by codemod. The change is **export-neutral** except 16
intentionally-removed private internals symbols (all verified
unconsumed). Gates green: typecheck, lint, build, size-limit, storybook.


<!-- This is an auto-generated description by cubic. -->
<a
href="https://cubic.dev/pr/twentyhq/twenty/pull/21745?utm_source=github"
target="_blank" rel="noopener noreferrer"
data-no-image-dialog="true"><picture><source
media="(prefers-color-scheme: dark)"
srcset="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"><source
media="(prefers-color-scheme: light)"
srcset="https://www.cubic.dev/buttons/review-in-cubic-light.svg"><img
alt="Review in cubic"
src="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"></picture></a>
<!-- End of auto-generated description by cubic. -->

packages/twenty-ui/src/input/LightIconButtonGroup/LightIconButtonGroup.module.scss

@@ -0,0 +1,4 @@
+.container {
+  display: inline-flex;
+  gap: 2px;
+}

packages/twenty-ui/src/input/LightIconButtonGroup/LightIconButtonGroup.module.scss.d.ts

@@ -0,0 +1,4 @@
+declare const classNames: {
+  readonly container: 'container';
+};
+export default classNames;

packages/twenty-ui/src/input/LightIconButtonGroup/LightIconButtonGroup.tsx

@@ -0,0 +1,65 @@
+import {
+  type FunctionComponent,
+  type MouseEvent,
+  type ReactElement,
+} from 'react';
+
+import { type IconComponent } from '@ui/icon';
+
+import { clsx } from 'clsx';
+import {
+  LightIconButton,
+  type LightIconButtonProps,
+} from '@ui/input/LightIconButton/LightIconButton';
+
+import styles from './LightIconButtonGroup.module.scss';
+
+export type LightIconButtonGroupProps = Pick<
+  LightIconButtonProps,
+  'className' | 'size'
+> & {
+  iconButtons: {
+    Wrapper?: FunctionComponent<{ iconButton: ReactElement }>;
+    Icon: IconComponent;
+    accent?: LightIconButtonProps['accent'];
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    onClick?: (event: MouseEvent<any>) => void;
+    disabled?: boolean;
+    ariaLabel?: string;
+    dataTestId?: string;
+  }[];
+};
+
+export const LightIconButtonGroup = ({
+  iconButtons,
+  size,
+  className,
+}: LightIconButtonGroupProps) => (
+  <div className={clsx(styles.container, className)}>
+    {iconButtons.map(
+      ({ Wrapper, Icon, accent, onClick, ariaLabel, dataTestId }, index) => {
+        const iconButton = (
+          <LightIconButton
+            key={`light-icon-button-${index}`}
+            Icon={Icon}
+            accent={accent}
+            disabled={!onClick}
+            onClick={onClick}
+            size={size}
+            aria-label={ariaLabel}
+            testId={dataTestId}
+          />
+        );
+
+        return Wrapper ? (
+          <Wrapper
+            key={`light-icon-button-wrapper-${index}`}
+            iconButton={iconButton}
+          />
+        ) : (
+          iconButton
+        );
+      },
+    )}
+  </div>
+);