Add local AI and Qdrant vector backends

app/api/health/ai/route.ts

@@ -0,0 +1,36 @@
+import { NextResponse } from 'next/server';
+import { getSQLiteClient } from '@/services/database/sqlite-client';
+import { createEmbeddingProvider } from '@/services/embedding/provider';
+import { createUtilityLlmProvider } from '@/services/llm/provider';
+import { getVectorBackend } from '@/services/vectorBackend/factory';
+
+export async function GET() {
+  try {
+    const sqlite = getSQLiteClient();
+    const utility = createUtilityLlmProvider();
+    const embedding = createEmbeddingProvider();
+    const vectorBackend = await getVectorBackend();
+
+    const [utilityHealth, embeddingHealth, vectorHealth] = await Promise.all([
+      utility.healthCheck(),
+      embedding.healthCheck(),
+      vectorBackend.healthCheck(),
+    ]);
+
+    return NextResponse.json({
+      status: utilityHealth.ok && embeddingHealth.ok && vectorHealth.ok ? 'success' : 'degraded',
+      data: {
+        utility_llm: utilityHealth,
+        embedding_provider: embeddingHealth,
+        vector_backend: vectorHealth,
+        embedding_profile: sqlite.getEmbeddingProfileStatus(),
+      },
+    });
+  } catch (error) {
+    return NextResponse.json({
+      status: 'error',
+      message: 'AI health check failed',
+      details: error instanceof Error ? error.message : String(error),
+    }, { status: 500 });
+  }
+}