fix(local-llm): wrap @mlc-ai/web-llm in dynamic import for Docker builds

Move hasModelInCache to local-llm package with dynamic import wrapper
so the browser-only dependency doesn't break server-side builds.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/manacore/apps/web/src/routes/(app)/llm-test/+page.svelte

@@ -10,6 +10,7 @@
 		MODELS,
 		type ModelKey,
 	} from '@manacore/local-llm';
+	import { hasModelInCache } from '@manacore/local-llm';
 	import { marked } from 'marked';
 	import { Robot, Trash, PaperPlaneRight, ClockCounterClockwise } from '@manacore/shared-icons';
 
@@ -29,7 +30,6 @@
 		if (typeof caches === 'undefined') return;
 		for (const [key, config] of Object.entries(MODELS)) {
 			try {
-				const { hasModelInCache } = await import('@mlc-ai/web-llm');
 				modelCacheStatus[key] = await hasModelInCache(config.modelId);
 			} catch {
 				modelCacheStatus[key] = false;

packages/local-llm/src/cache.ts

@@ -0,0 +1,13 @@
+/**
+ * Check if a model is cached in the browser's Cache API.
+ * Wraps @mlc-ai/web-llm's hasModelInCache with a dynamic import
+ * so it doesn't break SSR/Docker builds.
+ */
+export async function hasModelInCache(modelId: string): Promise<boolean> {
+	try {
+		const { hasModelInCache: check } = await import('@mlc-ai/web-llm');
+		return await check(modelId);
+	} catch {
+		return false;
+	}
+}

packages/local-llm/src/index.ts

@@ -14,6 +14,9 @@ export type {
 	LoadingStatus,
 } from './types';
 
+// Cache utilities
+export { hasModelInCache } from './cache';
+
 // Svelte 5 reactive helpers
 export {
 	getLocalLlmStatus,