refactor: regenerate gRPC stubs for chain.v1 wire package

The hub renamed its gRPC package fai.v1 -> chain.v1 (proto dir
proto/fai/v1 -> proto/chain/v1). Move the generated stubs to
generated/chain/v1 and rewrite the wire package + service paths
(/fai.v1.Hub/* -> /chain.v1.Hub/*) so the client talks to the
renamed hub. Pure package rename — no message/field changes.
HubClient public API is unchanged, so dependents need no edits.
dart analyze: clean.

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>

lib/src/generated/chain/v1/module.pbgrpc.dart

@@ -0,0 +1,107 @@
+// This is a generated file - do not edit.
+//
+// Generated from chain/v1/module.proto.
+
+// @dart = 3.3
+
+// ignore_for_file: annotate_overrides, camel_case_types, comment_references
+// ignore_for_file: constant_identifier_names
+// ignore_for_file: curly_braces_in_flow_control_structures
+// ignore_for_file: deprecated_member_use_from_same_package, library_prefixes
+// ignore_for_file: non_constant_identifier_names, prefer_relative_imports
+
+import 'dart:async' as $async;
+import 'dart:core' as $core;
+
+import 'package:grpc/service_api.dart' as $grpc;
+import 'package:protobuf/protobuf.dart' as $pb;
+import 'package:protobuf/well_known_types/google/protobuf/empty.pb.dart' as $1;
+
+import 'module.pb.dart' as $0;
+
+export 'module.pb.dart';
+
+/// The Module service is what the hub calls to invoke a module.
+///
+/// In Phase 0, modules run in-process as WASM components and this
+/// service is not over the wire. The proto definition exists so that
+/// external module processes (OCI, remote) can implement the same
+/// contract in Phase 1+.
+@$pb.GrpcServiceName('chain.v1.Module')
+class ModuleClient extends $grpc.Client {
+  /// The hostname for this service.
+  static const $core.String defaultHost = '';
+
+  /// OAuth scopes needed for the client.
+  static const $core.List<$core.String> oauthScopes = [
+    '',
+  ];
+
+  ModuleClient(super.channel, {super.options, super.interceptors});
+
+  /// Invoke the module once with typed inputs, receive typed outputs.
+  $grpc.ResponseFuture<$0.InvokeResponse> invoke(
+    $0.InvokeRequest request, {
+    $grpc.CallOptions? options,
+  }) {
+    return $createUnaryCall(_$invoke, request, options: options);
+  }
+
+  /// Return the module's self-description.
+  $grpc.ResponseFuture<$0.ModuleDescriptor> describe(
+    $1.Empty request, {
+    $grpc.CallOptions? options,
+  }) {
+    return $createUnaryCall(_$describe, request, options: options);
+  }
+
+  // method descriptors
+
+  static final _$invoke =
+      $grpc.ClientMethod<$0.InvokeRequest, $0.InvokeResponse>(
+          '/chain.v1.Module/Invoke',
+          ($0.InvokeRequest value) => value.writeToBuffer(),
+          $0.InvokeResponse.fromBuffer);
+  static final _$describe = $grpc.ClientMethod<$1.Empty, $0.ModuleDescriptor>(
+      '/chain.v1.Module/Describe',
+      ($1.Empty value) => value.writeToBuffer(),
+      $0.ModuleDescriptor.fromBuffer);
+}
+
+@$pb.GrpcServiceName('chain.v1.Module')
+abstract class ModuleServiceBase extends $grpc.Service {
+  $core.String get $name => 'chain.v1.Module';
+
+  ModuleServiceBase() {
+    $addMethod($grpc.ServiceMethod<$0.InvokeRequest, $0.InvokeResponse>(
+        'Invoke',
+        invoke_Pre,
+        false,
+        false,
+        ($core.List<$core.int> value) => $0.InvokeRequest.fromBuffer(value),
+        ($0.InvokeResponse value) => value.writeToBuffer()));
+    $addMethod($grpc.ServiceMethod<$1.Empty, $0.ModuleDescriptor>(
+        'Describe',
+        describe_Pre,
+        false,
+        false,
+        ($core.List<$core.int> value) => $1.Empty.fromBuffer(value),
+        ($0.ModuleDescriptor value) => value.writeToBuffer()));
+  }
+
+  $async.Future<$0.InvokeResponse> invoke_Pre(
+      $grpc.ServiceCall $call, $async.Future<$0.InvokeRequest> $request) async {
+    return invoke($call, await $request);
+  }
+
+  $async.Future<$0.InvokeResponse> invoke(
+      $grpc.ServiceCall call, $0.InvokeRequest request);
+
+  $async.Future<$0.ModuleDescriptor> describe_Pre(
+      $grpc.ServiceCall $call, $async.Future<$1.Empty> $request) async {
+    return describe($call, await $request);
+  }
+
+  $async.Future<$0.ModuleDescriptor> describe(
+      $grpc.ServiceCall call, $1.Empty request);
+}