旧版前端工程文件导入时版本对比查验、审阅与仿真时部分阻挡功能实现；前端参数输入格式统一规范

tests/manual/benchmark_project_input.py

@@ -0,0 +1,49 @@
+"""Measure JSON validation, input normalization and strict XML construction separately.
+Run from the repository root with its Python environment; artifacts are ignored.
+"""
+import json
+from pathlib import Path
+from statistics import median
+from time import perf_counter_ns
+
+from app.main import ReactFlowProjectPayload, build_reactflow_system_xml
+from app.project_parameters import prepare_project
+
+
+def measure(fn, repeat=200):
+    for _ in range(10):
+        fn()
+    samples = []
+    for _ in range(repeat):
+        start = perf_counter_ns()
+        fn()
+        samples.append((perf_counter_ns() - start) / 1e6)
+    samples.sort()
+    return {"medianMs": median(samples), "p95Ms": samples[int(.95 * len(samples))], "samples": repeat}
+
+
+def main():
+    source = Path("tests/data/test-mql-8-corrected.json")
+    raw = json.loads(source.read_text(encoding="utf-8"))
+    current = ReactFlowProjectPayload.model_validate(raw)
+    old = current.model_copy(deep=True)
+    for node in old.nodes:
+        node.data.modelVersion = "0.0.1"
+    normalized, _ = prepare_project(current)
+    metrics = {
+        "source": str(source), "nodes": len(current.nodes),
+        "parameters": sum(len(n.data.parameters) for n in current.nodes),
+        "pydanticInput": measure(lambda: ReactFlowProjectPayload.model_validate(raw)),
+        "prepareCurrent": measure(lambda: prepare_project(current)),
+        "prepareAllOld": measure(lambda: prepare_project(old)),
+        "strictXmlAfterPreparation": measure(lambda: build_reactflow_system_xml(normalized)),
+        "notes": "prepare includes a defensive copy, parameter/expression/unit conversion, version comparison and simulation time normalization; not version checking alone.",
+    }
+    destination = Path("test/project-contract-20260912/backend-input-timing.json")
+    destination.parent.mkdir(parents=True, exist_ok=True)
+    destination.write_text(json.dumps(metrics, indent=2), encoding="utf-8")
+    print(json.dumps(metrics, indent=2))
+
+
+if __name__ == "__main__":
+    main()