feat(ui): add DataTable and Toaster, drop the legacy Table, fix overlay dialogs

DataTable replaces the 20-line Table scaffold entirely: columns, sorting,
filtering, pagination, selection, bulk actions, comparison layout, sticky
first column, custom HTML cells, and a remote source driven by a `request`
output rather than a function prop (props travel as HTML attributes, so a
function arrives as its own source text).

Toaster replaces the hand-rolled status div: tone icons, actions, hover
pause/resume and a progress bar.

Overlays audit -- Modal and Drawer declared aria-modal="true" but nothing
ever moved focus into the panel, so the @keydown handler on their root
never ran and closeOnEscape did nothing. Focus, focus restore, a Tab trap
and a body scroll lock now live in the reactive runtime, shared by both.

ContextMenu placed pointer menus by subtracting a guessed 340x420 from the
viewport, which pushed every menu that was not that size away from the
pointer; it now positions at the pointer and lets the anchored clamp pull
it back once it can be measured.

The reactive runtime size budget moves 150k -> 175k to cover anchored
overlays, dialog behaviour, the toaster and the DataTable client half.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

packages/cli/src/build.ts

@@ -47,7 +47,7 @@ import {
   renderThemeCss,
   renderThemeRuntime,
 } from "@wrnexus/styles";
-import { uiComponentsDir, uiCss } from "@wrnexus/ui";
+import { uiComponentsDir, uiCss } from "@wrnexus/ui/registry";
 import { renderSchemasScript, type ObjectSchema, type SchemaDescriptor } from "@wrnexus/validation";
 import { loadLocales, resolveI18n } from "@wrnexus/i18n";
 import { pathToFileURL } from "node:url";

packages/cli/src/eject.ts

@@ -6,7 +6,7 @@
 
 import { copyFileSync, existsSync, mkdirSync } from "node:fs";
 import { join, resolve } from "node:path";
-import { uiComponentNames, uiComponentPath } from "@wrnexus/ui";
+import { uiComponentNames, uiComponentPath } from "@wrnexus/ui/registry";
 
 export function runEject(appRoot: string, names: string[]): void {
   const root = resolve(appRoot);

packages/cli/src/inspect.ts

@@ -3,7 +3,7 @@ import { dirname, join, relative, resolve } from "node:path";
 import { buildRouter, createRouteManifest, nameRoutes } from "@wrnexus/router";
 import { createPluginRunner, discoverPlugins } from "@wrnexus/plugin";
 import { loadAppConfig } from "@wrnexus/styles";
-import { uiComponentsDir } from "@wrnexus/ui";
+import { uiComponentsDir } from "@wrnexus/ui/registry";
 import { parse } from "@wrnexus/syntax";
 
 export type InspectTarget =