feat(scripts): 添加针对code_js1接口的压测脚本和结果

添加压测脚本run_stress_code_js1.sh和stress_code_js1.py，用于对code_js1接口进行并发压力测试
生成压测结果JSON文件，包含请求统计、延迟和吞吐量等指标

scripts/results/code_js1_20251010_231059.json

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+{
+  "url": "http://127.0.0.1:9898/api/dynamic/code_js1",
+  "method": "POST",
+  "total": 3000,
+  "concurrency": 150,
+  "timeout_sec": 8.0,
+  "ok": 3000,
+  "errors": 0,
+  "has_data": 3000,
+  "duration_ms": 13766.637417022139,
+  "throughput_rps": 217.91813854925584,
+  "status_counts": {
+    "200": 3000
+  },
+  "latency_ms": {
+    "min": 550.376542028971,
+    "avg": 686.4437982002273,
+    "max": 980.3312500007451,
+    "p50": 671.9021250028163,
+    "p90": 800.2895419485867,
+    "p95": 885.534834000282,
+    "p99": 946.9203340122476
+  },
+  "resp_size_bytes": {
+    "avg": 556,
+    "min": 556,
+    "max": 556
+  }
+}

scripts/results/code_js1_nocsv_20251010_231332.json

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+{
+  "url": "http://127.0.0.1:9898/api/dynamic/code_js1",
+  "method": "POST",
+  "total": 100,
+  "concurrency": 20,
+  "timeout_sec": 5.0,
+  "ok": 100,
+  "errors": 0,
+  "has_data": 100,
+  "duration_ms": 486.8026250042021,
+  "throughput_rps": 205.42206402263503,
+  "status_counts": {
+    "200": 100
+  },
+  "latency_ms": {
+    "min": 56.31004192400724,
+    "avg": 94.25131994648837,
+    "max": 153.34666694980115,
+    "p50": 79.22116597183049,
+    "p90": 147.41216704715043,
+    "p95": 151.8984999274835,
+    "p99": 152.9659579973668
+  },
+  "resp_size_bytes": {
+    "avg": 556,
+    "min": 556,
+    "max": 556
+  }
+}

scripts/results/code_js1_quick_20251010_232217.json

@@ -0,0 +1,29 @@
+{
+  "url": "http://127.0.0.1:9898/api/dynamic/code_js1",
+  "method": "POST",
+  "total": 50,
+  "concurrency": 10,
+  "timeout_sec": 8.0,
+  "ok": 50,
+  "errors": 0,
+  "has_data": 50,
+  "duration_ms": 266.0578330978751,
+  "throughput_rps": 187.9290657140939,
+  "status_counts": {
+    "200": 50
+  },
+  "latency_ms": {
+    "min": 25.911415927112103,
+    "avg": 50.4597524413839,
+    "max": 117.64616600703448,
+    "p50": 37.48199995607138,
+    "p90": 103.3676250372082,
+    "p95": 107.0811670506373,
+    "p99": 108.35866699926555
+  },
+  "resp_size_bytes": {
+    "avg": 556,
+    "min": 556,
+    "max": 556
+  }
+}