feat: перейти на изолированный контракт генерации

- добавлены независимые adapters для шести exact modes
- runtime переведён на JavaScript с отдельными декларациями
- generated output перенесён в .svg-sprite
- удалены legacy pipeline и встроенный preview

src/generate.ts

@@ -0,0 +1,65 @@
+import path from 'node:path'
+import {
+  resolveSpriteConfig,
+  resolveSpriteConfigSource,
+} from './config.js'
+import type { ModeResultMetadata } from './core/mode-adapter.js'
+import { writeOutputPlan } from './core/output-writer.js'
+import { prepareSprite } from './core/prepare-sprite.js'
+import type { SpriteGenerationBaseResult } from './core/result.js'
+import { log } from './logger.js'
+import { getModeAdapter } from './mode-registry.js'
+import type { SpriteConfig } from './types.js'
+
+export type SpriteGenerationResult = SpriteGenerationBaseResult & ModeResultMetadata
+
+/** Генерирует один output через adapter разрешённого exact mode. */
+export async function generateSprite(
+  source: string,
+  overrides: SpriteConfig = {},
+): Promise<SpriteGenerationResult> {
+  const resolvedSource = await resolveSpriteConfigSource(source)
+  const config = resolveSpriteConfig(
+    resolvedSource.rootDir,
+    resolvedSource.config,
+    overrides,
+  )
+  const adapter = getModeAdapter(config.mode)
+  const prepared = prepareSprite(config)
+  const plan = await adapter.generate({
+    rootDir: resolvedSource.rootDir,
+    config,
+    prepared,
+  })
+  const plannedPaths = new Set(plan.files.map((file) => file.path.replaceAll('\\', '/')))
+
+  for (const requiredPath of [plan.paths.entry, plan.paths.sprite, plan.paths.manifest]) {
+    if (!plannedPaths.has(requiredPath)) {
+      throw new Error(`Mode "${config.mode}" result path is missing from its output plan: ${requiredPath}`)
+    }
+  }
+
+  writeOutputPlan(
+    resolvedSource.rootDir,
+    adapter.mode,
+    adapter.contractVersion,
+    plan.files,
+    config.generatedNotice,
+  )
+
+  const generatedDir = path.resolve(resolvedSource.rootDir, plan.paths.generatedDir)
+  const iconLabel = prepared.iconNames.length === 1 ? 'icon' : 'icons'
+  log.success(`✓ ${config.name} · ${prepared.iconNames.length} ${iconLabel} · ${config.mode}`)
+  log.detail(`  → ${path.relative(process.cwd(), generatedDir)}`)
+
+  return {
+    name: config.name,
+    rootDir: resolvedSource.rootDir,
+    generatedDir,
+    spritePath: path.resolve(resolvedSource.rootDir, plan.paths.sprite),
+    manifestPath: path.resolve(resolvedSource.rootDir, plan.paths.manifest),
+    iconCount: prepared.iconNames.length,
+    mode: config.mode,
+    ...plan.result,
+  }
+}