First argument as config.env is mandatory

src/batch_store.cpp

@@ -406,6 +406,14 @@ void BatchStore::start_cutoff_watcher() {
     t.detach();
 }
 
+void BatchStore::ping_activity() {
+    std::lock_guard<std::mutex> lock(state_mutex_);
+    if (!current_state_.is_null()) {
+        current_state_["last_detection_time"] = now_iso();
+        reset_batch_timer();
+    }
+}
+
 void BatchStore::shutdown() {
     shutdown_flag_ = true;
     batch_timer_running_ = false;

src/batch_store.hpp

@@ -34,6 +34,7 @@ public:
     std::pair<int, bool> record_ayam_crossing(int track_id);
     bool record_talenan_crossing(int track_id);
     void end_batch(const std::string& closed_by = "manual");
+    void ping_activity();
     void shutdown();
 
 private:

src/main.cpp

@@ -5,6 +5,7 @@
 #include "rknn_yolo.hpp"
 #include "drawing.hpp"
 #include "nms.hpp"
+#include "version.hpp"
 
 #include <opencv2/opencv.hpp>
 #include <Eigen/Dense>
@@ -98,10 +99,30 @@ int main(int argc, char* argv[]) {
     signal(SIGINT, signal_handler);
     signal(SIGTERM, signal_handler);
 
-    const char* env_path = argc > 1 ? argv[1] : nullptr;
-    g_config.load_from_env(env_path);
+    if (argc < 2) {
+        std::cout << "ByteTrack Counter (C++)" << std::endl;
+        std::cout << "Version: " << version::GIT_COMMIT
+                  << " | branch: " << version::GIT_BRANCH
+                  << " | built: " << version::BUILD_DATE << " " << version::BUILD_TIME
+                  << " | rknn: " << (version::BUILD_RKNN ? "ON" : "OFF");
+        if (!version::GIT_TAG.empty())
+            std::cout << " | tag: " << version::GIT_TAG;
+        std::cout << std::endl;
+        std::cout << "Usage: bytetrack-counter <config.env>" << std::endl;
+        std::cout << "  config.env  path to environment configuration file (required)" << std::endl;
+        return 1;
+    }
+
+    g_config.load_from_env(argv[1]);
 
     std::cout << "Starting ByteTrack Counter (C++)" << std::endl;
+    std::cout << "Version: " << version::GIT_COMMIT
+              << " | branch: " << version::GIT_BRANCH
+              << " | built: " << version::BUILD_DATE << " " << version::BUILD_TIME
+              << " | rknn: " << (version::BUILD_RKNN ? "ON" : "OFF");
+    if (!version::GIT_TAG.empty())
+        std::cout << " | tag: " << version::GIT_TAG;
+    std::cout << std::endl;
     std::cout << "Camera: " << g_config.camera_name << std::endl;
     std::cout << "Source: " << g_config.source << std::endl;
     std::cout << "Model: " << g_config.model_path << " | imgsz=" << g_config.imgsz
@@ -244,6 +265,8 @@ int main(int argc, char* argv[]) {
             int na = static_cast<int>(ayam_boxes.size());
             int nt = static_cast<int>(talenan_boxes.size());
 
+            if (na > 0) store.ping_activity();
+
             Eigen::MatrixXf ayam_mat(na, 4), talenan_mat(nt, 4);
             Eigen::VectorXf ayam_scores_vec(na), talenan_scores_vec(nt);
 

src/version.hpp.in

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <string>
+
+namespace version {
+
+const std::string GIT_COMMIT   = "@GIT_COMMIT@";
+const std::string GIT_BRANCH   = "@GIT_BRANCH@";
+const std::string GIT_TAG      = "@GIT_TAG@";
+const std::string BUILD_DATE   = "@BUILD_DATE@";
+const std::string BUILD_TIME   = "@BUILD_TIME@";
+const int         BUILD_YEAR   = @BUILD_YEAR@;
+const bool        BUILD_RKNN   = @HAS_RKNN_VAL@;
+
+}