feat: project registry + per-project filters (stage 1 wire surface)

- listProjects() returns the shared hub's registry (general first;
  sealed areas never appear — they are their own hub instance).
- eventLog, streamEvents and listApprovals take an optional project:
  filter; LoggedEvent, PendingApprovalEntry and FlowSummary carry
  project. Stubs regenerated from the platform's hub.proto.

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

lib/src/hub_client.dart

@@ -81,6 +81,7 @@ typedef N8nEndpointStatus = pb.N8nEndpointStatus;
 typedef N8nEndpointConfigEntry = pb.N8nEndpointConfigEntry;
 typedef ModuleInfoResponse = pb.ModuleInfoResponse;
 typedef FlowSummary = pb.FlowSummary;
+typedef ProjectInfo = pb.ProjectInfo;
 typedef StoreEntry = pb.StoreEntry;
 typedef StoreSearchResponse = pb.StoreSearchResponse;
 typedef InstallModuleResponse = pb.InstallModuleResponse;
@@ -183,18 +184,31 @@ class HubClient {
   }
 
   /// Recent events from the audit log, newest-first. Pass an
-  /// empty `types` list for all event types.
+  /// empty `types` list for all event types. A non-empty
+  /// [project] scopes the view to that project's runs (the slug
+  /// is normalized hub-side, so a display name works too).
   Future<List<LoggedEvent>> eventLog({
     int limit = 100,
     List<String> types = const [],
+    String project = '',
   }) async {
     final req = pb.EventLogRequest()
       ..limit = limit
-      ..eventTypes.addAll(types);
+      ..eventTypes.addAll(types)
+      ..project = project;
     final r = await _admin.eventLog(req);
     return r.events;
   }
 
+  /// The shared hub's project registry (`general` first): the
+  /// lightweight labels grouping flows, runs, approvals and audit
+  /// events. Sealed areas never appear here — they are their own
+  /// hub instance a client connects to directly.
+  Future<List<ProjectInfo>> listProjects() async {
+    final r = await _admin.listProjects(Empty());
+    return r.projects;
+  }
+
   /// Read the operator's `default_scope:` — the ordered list of
   /// provider segments the bare-form capability resolver
   /// consults when a flow names a capability without an explicit
@@ -248,21 +262,26 @@ class HubClient {
   Stream<LoggedEvent> streamEvents({
     int backfill = 50,
     List<String> types = const [],
+    String project = '',
   }) {
     final req = pb.StreamEventsRequest()
       ..backfill = backfill
-      ..eventTypes.addAll(types);
+      ..eventTypes.addAll(types)
+      ..project = project;
     return _admin.streamEvents(req);
   }
 
-  /// Pending approvals filtered by status. Defaults to all.
+  /// Pending approvals filtered by status and/or project.
+  /// Defaults to all.
   Future<List<PendingApprovalEntry>> listApprovals({
     List<String> statuses = const [],
     int limit = 100,
+    String project = '',
   }) async {
     final req = pb.ListApprovalsRequest()
       ..limit = limit
-      ..statuses.addAll(statuses);
+      ..statuses.addAll(statuses)
+      ..project = project;
     final r = await _admin.listApprovals(req);
     return r.entries;
   }