feat(app): экраны импорта отчётов, целей, доходов, ребалансировки, налогов и бенчмарков

Импорт (/imports, /instruments/pending) и фаза 4 (/goals, /income,
/rebalance, /tax, аналитика-хаб с benchmarks_card) — по
docs/ai/import-contract.md и docs/ai/phase4-contract.md. file_picker для
загрузки отчёта.

app/lib/features/pending/providers.dart

@@ -0,0 +1,34 @@
+import 'package:fintracker_api/fintracker_api.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../core/api/api_client.dart';
+import 'data/pending_api.dart';
+
+final pendingApiProvider = Provider<PendingApi>((ref) => PendingApi(ref.watch(apiProvider).dio));
+
+/// `pending | resolved | ignored | all` — the filter of the resolve screen.
+final pendingStatusFilterProvider = StateProvider<String>((ref) => 'pending');
+
+final pendingInstrumentsProvider =
+    FutureProvider.autoDispose<List<PendingInstrument>>((ref) async {
+  final status = ref.watch(pendingStatusFilterProvider);
+  return ref.watch(pendingApiProvider).list(status: status);
+});
+
+/// How many rows still await a decision — shown as a badge next to the import screen's link.
+final pendingCountProvider = FutureProvider.autoDispose<int>((ref) async {
+  final rows = await ref.watch(pendingApiProvider).list(status: 'pending');
+  return rows.length;
+});
+
+/// Instrument search for the "link to an existing instrument" dialog. This one endpoint is
+/// already in the generated client, so it goes through it rather than raw Dio.
+final instrumentSearchProvider =
+    FutureProvider.autoDispose.family<List<InstrumentOut>, String>((ref, query) async {
+  if (query.trim().length < 2) return const [];
+  final r = await ref
+      .watch(apiProvider)
+      .getInstrumentsApi()
+      .instrumentsList(q: query.trim(), limit: 25);
+  return r.data ?? const [];
+});