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extras/cpp/progress_bar.hpp

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+// extras/cpp — decorative. a tiny console progress bar, echoing the shape
+// of the /api/job/<id> polling response from backend/jobs.py.
+#pragma once
+
+#include <string>
+#include <algorithm>
+
+namespace nexdex {
+
+class ProgressBar {
+public:
+    ProgressBar(std::string label, int width) : label_(std::move(label)), width_(width) {}
+
+    std::string render(int percent) const {
+        percent = std::clamp(percent, 0, 100);
+        int filled = width_ * percent / 100;
+        int empty = width_ - filled;
+
+        std::string bar;
+        bar.append(filled, '#');
+        bar.append(empty, '-');
+
+        return label_ + " [" + bar + "] " + std::to_string(percent) + "%";
+    }
+
+private:
+    std::string label_;
+    int width_;
+};
+
+}  // namespace nexdex