fix: ship implementation libraries as dependencies, not peers (Issue epam/ai-dial-chat#8719)

CHANGELOG.md

@@ -29,6 +29,7 @@ Versions match the git tags on the `development` branch.
 
 ### Changed
 
+- **The kit installs what it renders with — `react` and `react-dom` are the only required peers** — `@floating-ui/react`, `classnames` and `@tabler/icons-react` were required peers, so every host had to add three packages it never imports to its own `package.json` just to satisfy the peer graph; all three are eagerly reachable from every entry point, so they are now `dependencies` of the kit. The editor packages go the other way: `@monaco-editor/react`, `monaco-editor` and `@uiw/react-md-editor` are reachable only behind the `Lazy*` wrappers the `./editors` subpath exports, so they become **optional** peers — `npm install` stays quiet without them, and you add them only if you mount an editor. `@uiw/react-markdown-preview` is dropped from the peer list entirely: nothing in the kit imports it, and `@uiw/react-md-editor` already depends on it. Nothing changes for a host that keeps its current `package.json`; the point is that it can now delete four to six entries from it. See [issue #8719](https://github.com/epam/ai-dial-chat/issues/8719) for the embedding-host report this came from.
 - **The accent gradient is themed through `--bg-gradient-*` / `--stroke-gradient-*`** — the gradient stops were addressed by their position in one specific gradient (`--bg-control-accent-gradient-hover-from`), so the same colour had a different variable name in every gradient that used it. Each stop is now a numbered token (`--bg-gradient-1`, `--bg-gradient-2-hover`, `--stroke-gradient-1`, …). The `--bg-control-accent-gradient-*` names stay in the fallback chain; the `--stroke-control-accent-gradient-*` names behind the selected tab's underline do **not**, so a theme that sets those must rename them (see the migration guide).
 - **Renamed control variables keep their old names as fallbacks** — every token renamed in this release resolves through its 0.13.0 variable before reaching the light default (e.g. `var(--text-control-disable-primary, var(--text-control-disable-alpha, #848E9C))`). Only the Tailwind class names are breaking; a host themed by the DIAL themes service needs no theme change to keep its colours.
 

README.md

@@ -292,11 +292,20 @@ Storybook provides:
 <details>
 <summary>Next.js Integration</summary>
 
-1. Install the package and peer dependencies that are not currently in your project
+1. Install the package. React is the only peer you have to supply — everything
+   the kit renders with, it installs itself.
+
 ``` bash
 npm install @epam/ai-dial-ui-kit
-npm install react react-dom  @tabler/icons-react classnames
-npm install @floating-ui/react monaco-editor @monaco-editor/react
+npm install react react-dom
+```
+
+Add the editor packages only if you use the `@epam/ai-dial-ui-kit/editors`
+subpath. They are optional peers, so `npm install` stays quiet without them, and
+the kit only reaches for them when a `Lazy*` editor actually mounts:
+
+``` bash
+npm install monaco-editor @monaco-editor/react @uiw/react-md-editor
 ```
 
 2. Import style in the root layout of the project: