feat(core): add Electron runtime, services, and app composition

src/token-mergers/index.ts

@@ -0,0 +1,27 @@
+import { mergeTokens as defaultMergeTokens } from '../token-merger';
+import { MergedToken, Token } from '../types';
+
+export interface TokenMergerProvider {
+  id: string;
+  merge: (tokens: Token[]) => MergedToken[];
+}
+
+type TokenMergerProviderFactory = () => TokenMergerProvider;
+
+const tokenMergerProviderFactories = new Map<string, TokenMergerProviderFactory>();
+
+export function registerTokenMergerProvider(id: string, factory: TokenMergerProviderFactory): void {
+  if (tokenMergerProviderFactories.has(id)) {
+    return;
+  }
+  tokenMergerProviderFactories.set(id, factory);
+}
+
+function registerDefaultTokenMergerProviders(): void {
+  registerTokenMergerProvider('default', () => ({
+    id: 'default',
+    merge: (tokens: Token[]) => defaultMergeTokens(tokens),
+  }));
+}
+
+registerDefaultTokenMergerProviders();