chore: auto-commit (8 archivos)

- backend/handlers.go
- data.cpp
- data.h
- main.cpp
- panel_board.cpp
- panel_filters.cpp
- appicon.ico
- backend/kanban_cpp_backend.exe

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

main.cpp

@@ -28,12 +28,19 @@ static void start_refresh_thread() {
         kanban::refresh_meta();
         kanban::refresh_issues();
         kanban::refresh_flows();
+        kanban::refresh_agent_status();
         kanban::start_sse();
+        int tick = 0;
         while (g_refresh_thread_alive) {
-            std::this_thread::sleep_for(std::chrono::seconds(30));
+            // Fast loop (every 3s) for agent status; full refresh every 30s.
+            std::this_thread::sleep_for(std::chrono::seconds(3));
             if (!g_refresh_thread_alive) break;
-            kanban::refresh_issues();
-            kanban::refresh_flows();
+            kanban::refresh_agent_status();
+            if (++tick >= 10) {
+                tick = 0;
+                kanban::refresh_issues();
+                kanban::refresh_flows();
+            }
         }
         kanban::stop_sse();
     });