Refactoring

lib/domain/services/embedding_service.dart

@@ -0,0 +1,31 @@
+import 'package:dio/dio.dart';
+
+/// Wraps the Nomic embedding server (llama.cpp, port 8081).
+/// Returns a 768-dimensional float vector for any input text.
+class EmbeddingService {
+  final _dio = Dio(
+    BaseOptions(
+      connectTimeout: const Duration(seconds: 10),
+      receiveTimeout: const Duration(seconds: 60),
+    ),
+  );
+
+  static const _url = 'http://localhost:8081/v1/embeddings';
+
+  /// Returns the embedding vector for [text].
+  /// Throws a [DioException] if the Nomic server is unreachable.
+  Future<List<double>> embed(String text) async {
+    final response = await _dio.post<Map<String, dynamic>>(
+      _url,
+      data: {
+        'input': text,
+        'model': 'nomic-embed-text-v1.5.Q4_K_M',
+      },
+    );
+
+    final raw =
+        (response.data!['data'] as List<dynamic>)[0]['embedding']
+            as List<dynamic>;
+    return raw.map((e) => (e as num).toDouble()).toList();
+  }
+}