feat: 布线报告提示容量压力

docs/FreeCAD 3D自动布线设计方案.md

@@ -374,6 +374,8 @@ QetWiringCutOutBridgeExtensionMm = 20.0
 
 如果多条导线共用同一路径并触发 lane 偏移，批量报告会显示最大 lane 编号和 lane 间距。这个值用于确认当前结果是否只是完全重叠的导线，还是已经按共路情况做了可视错位；它仍然是显示层偏移，不等于真实线槽截面排布或填充率计算。
 
+当最大并行线数超过 route track 中记录的路径最小容量时，批量报告会给出容量提示。这个提示只基于 `QetRouteCarrierCapacity` 和当前 lane 情况，用于暴露“可能容量不足”的调试线索，不等同于按线径、截面积和线槽填充率计算的工程容量校核。
+
 ### 5.3 布线连接功能
 
 已完成：
@@ -457,6 +459,7 @@ tests/python/freecad_exchange_auto_routing_test.py
 33. 批量布线报告会显示路径网络自动桥接段数和主动避障屏蔽段数，方便核对调参和避障是否实际参与求路。
 34. 批量布线报告会显示最大 lane 编号和 lane 间距，方便确认多根线共路时是否发生了可视错位。
 35. `QetRouteTrackJson` 的 carrier payload 会记录 `capacity`，方便后续分析线槽容量偏好和共路绕行。
+36. 批量布线报告会在最大并行线数超过路径最小容量时显示容量提示，但当前仍不做真实填充率计算。
 
 已完成 FreeCAD smoke：
 

src/Mod/FreeCADExchange/AutoRouting.py

@@ -1777,6 +1777,45 @@ def _route_lane_summary(report):
     }
 
 
+def _route_track_min_capacity(route_track):
+    if not isinstance(route_track, dict):
+        return None
+    capacities = []
+    for segment in route_track.get("segments", []) or []:
+        carrier = segment.get("carrier", {}) if isinstance(segment, dict) else {}
+        if not isinstance(carrier, dict):
+            continue
+        try:
+            capacity = int(float(carrier.get("capacity", 0) or 0))
+        except Exception:
+            capacity = 0
+        if capacity > 0:
+            capacities.append(capacity)
+    if not capacities:
+        return None
+    return min(capacities)
+
+
+def _route_capacity_pressure_summary(report, lane_summary):
+    if not lane_summary:
+        return {}
+    max_parallel_wires = int(lane_summary.get("max_lane_index", 0) or 0) + 1
+    min_capacity = None
+    for route in report.get("routes", []) or []:
+        if not isinstance(route, dict):
+            continue
+        route_capacity = _route_track_min_capacity(route.get("route_track", {}))
+        if route_capacity is None:
+            continue
+        min_capacity = route_capacity if min_capacity is None else min(min_capacity, route_capacity)
+    if min_capacity is None or max_parallel_wires <= min_capacity:
+        return {}
+    return {
+        "max_parallel_wires": max_parallel_wires,
+        "min_capacity": min_capacity,
+    }
+
+
 def format_eplan_connection_route_report(report):
     message = "批量生成布线连接完成：routed={0}, collision_warnings={1}, missing_terminals={2}".format(
         report.get("routed", 0),
@@ -1834,6 +1873,12 @@ def format_eplan_connection_route_report(report):
             lane_summary.get("max_lane_index", 0),
             float(lane_summary.get("spacing_mm", 0.0) or 0.0),
         )
+    capacity_pressure = _route_capacity_pressure_summary(report, lane_summary)
+    if capacity_pressure:
+        message += "\n容量提示：最大并行线数 {0}，路径最小容量 {1}。".format(
+            capacity_pressure.get("max_parallel_wires", 0),
+            capacity_pressure.get("min_capacity", 0),
+        )
     route_source_sample = _route_source_sample_text(report)
     if route_source_sample:
         message += "\n{0}".format(route_source_sample)

tests/python/freecad_exchange_auto_routing_test.py

@@ -2247,6 +2247,30 @@ class AutoRoutingTest(unittest.TestCase):
 
         self.assertIn("并行错位：最大 lane 2，间距 10.0 mm。", message)
 
+    def test_route_report_warns_when_parallel_lanes_exceed_track_capacity(self):
+        _install_fake_freecad()
+        _terminal_objects, _wiring_objects, _routing_network, auto_routing = _reload_modules()
+        report = {
+            "routed": 3,
+            "collision_warnings": 0,
+            "skipped_missing_terminal": 0,
+            "routes": [
+                {
+                    "lane": {"index": 2, "spacing_mm": 10.0},
+                    "route_track": {
+                        "segments": [
+                            {"carrier": {"kind": "WireDuct", "capacity": 2}},
+                            {"carrier": {"kind": "WireDuct", "capacity": 4}},
+                        ]
+                    },
+                }
+            ],
+        }
+
+        message = auto_routing.format_eplan_connection_route_report(report)
+
+        self.assertIn("容量提示：最大并行线数 3，路径最小容量 2。", message)
+
     def test_route_eplan_connections_report_keeps_route_identity_and_diagnostics(self):
         _install_fake_freecad()
         terminal_objects, _wiring_objects, routing_network, auto_routing = _reload_modules()