feat: add layout_optimizer package for automatic layout of devices

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

unilabos/layout_optimizer/lab_parser.py

@@ -0,0 +1,49 @@
+"""解析实验室平面图 JSON。
+
+简单格式：
+{
+    "width": 6.0,
+    "depth": 4.0,
+    "obstacles": [
+        {"x": 2.0, "y": 0.0, "width": 0.1, "depth": 1.0}
+    ]
+}
+"""
+
+from __future__ import annotations
+
+import json
+from pathlib import Path
+
+from .models import Lab, Obstacle
+
+
+def parse_lab(data: dict) -> Lab:
+    """从字典解析实验室平面图。"""
+    obstacles = []
+    for obs in data.get("obstacles", []):
+        obstacles.append(
+            Obstacle(
+                x=float(obs["x"]),
+                y=float(obs["y"]),
+                width=float(obs["width"]),
+                depth=float(obs["depth"]),
+            )
+        )
+    return Lab(
+        width=float(data["width"]),
+        depth=float(data["depth"]),
+        obstacles=obstacles,
+    )
+
+
+def load_lab_from_file(path: str | Path) -> Lab:
+    """从 JSON 文件加载实验室平面图。"""
+    with open(path) as f:
+        data = json.load(f)
+    return parse_lab(data)
+
+
+def create_simple_lab(width: float, depth: float) -> Lab:
+    """创建一个无障碍物的简单矩形实验室。"""
+    return Lab(width=width, depth=depth)