Initial commit: cuGenOpt GPU optimization solver

benchmark/experiments/opt_aos_interval/gpu.cu

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+/**
+ * opt_aos_interval: AOS 更新频率优化验证
+ *
+ * 对比 aos_update_interval = 1 (旧默认) vs 5 (新默认) vs 10
+ * 测试实例：TSP eil51, ch150, lin318（覆盖小/中/大规模）
+ * 配置：timed 5s, 固定 5 seeds
+ * 核心指标：gens/s 和 gap
+ */
+#include "bench_common.cuh"
+
+int main(int argc, char** argv) {
+    bench_init();
+    bench_csv_header();
+
+    int instances[] = {0, 2, 4}; // eil51, ch150, lin318
+    int intervals[] = {1, 5, 10};
+
+    for (int ii : instances) {
+        auto& inst = ALL_TSP_INSTANCES[ii];
+        float* dist = new float[inst.n * inst.n];
+        compute_euc2d_dist(dist, inst.coords, inst.n);
+
+        for (int iv : intervals) {
+            char cfg_name[64];
+            snprintf(cfg_name, sizeof(cfg_name), "aos_iv%d", iv);
+
+            SolverConfig c = make_timed_config(5.0f);
+            c.use_aos = true;
+            c.aos_update_interval = iv;
+
+            bench_run_tsp<void>(inst.name, cfg_name, inst.n, dist, c, inst.optimal);
+        }
+        delete[] dist;
+    }
+
+    fprintf(stderr, "\n[opt_aos_interval] completed.\n");
+    return 0;
+}