优化雅可比矩阵计算；端口转发情况下仿真结果传输方式优化

docs/other/backups/2026-09-12-result-transfer/manifest.json

@@ -0,0 +1,52 @@
+{
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+  "date": "2026-09-12",
+  "basis": "Current accepted Jacobian implementation before this transfer experiment; not a rollback to git HEAD.",
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