feat: добавить поддержку 20 framework exact modes

Добавлены exact modes:
- vue@vite и vue@webpack
- nuxt@vite и nuxt@webpack
- svelte@vite, svelte@webpack и sveltekit@vite
- angular@application и angular@webpack
- astro@vite
- solid@vite, solid@webpack и solid-start@vite
- preact@vite и preact@webpack
- qwik@vite
- lit@vite и lit@webpack
- alpine@vite и alpine@webpack

Для каждого mode реализованы изолированный adapter, нативный
framework-компонент, declarations, manifest, CSS и внешний asset URL.

Добавлены production integration-стенды с генерацией, typecheck,
сборкой и Playwright-проверкой рендера спрайта и Viewer.

Обновлены Viewer, RU/EN-гайды, README, technical reference и AI skills.
Итоговая матрица включает 29 exact modes.

Проверки:
- 48 unit-тестов
- 29 integration E2E-тестов

src/modes/preact-webpack/adapter.ts

@@ -0,0 +1,25 @@
+import { compileSpriteContent } from '../../compiler.js'
+import { createCompiledSpriteArtifact } from '../../core/compiled-artifact.js'
+import type { ModeAdapter } from '../../core/mode-adapter.js'
+import { generateOutputFiles } from './output.js'
+
+export const preactWebpackAdapter: ModeAdapter<'preact@webpack'> = {
+  mode: 'preact@webpack',
+  async generate(context) {
+    const bytes = await compileSpriteContent(context.prepared.folder, context.config.transform, {
+      rootViewBox: false,
+    })
+    const artifact = createCompiledSpriteArtifact(bytes, context.prepared.iconNames, 'stack')
+
+    return {
+      files: generateOutputFiles(context.config, artifact),
+      paths: {
+        generatedDir: '.svg-sprite',
+        sprite: '.svg-sprite/sprite.svg',
+        manifest: '.svg-sprite/svg-sprite.manifest.js',
+        entry: '.svg-sprite/index.js',
+      },
+      result: { target: 'webpack' },
+    }
+  },
+}