R2：底板 / 刀片布局布线脚本、快照、截图与规划文档更新（含外壳、打印件、布线归档）

Co-Authored-By: Claude Opus 5.5 <[email protected]>

.claude/r2/dir_stats.py

@@ -0,0 +1,29 @@
+# -*- coding: utf-8 -*-
+u"""布线缓存的「方向符合度」：每层按长度算顺 / 逆 / 斜各占多少（L1 优选 x、L4 优选 y，route_base.LAYER_DIR）。
+
+    /c/Python314/python .claude/r2/dir_stats.py [缓存.json ...]      # 默认 _base_routes.json
+"""
+import io, json, math, os, sys
+sys.stdout.reconfigure(encoding='utf-8')
+HERE = os.path.dirname(os.path.abspath(__file__))
+PREF = {1: 'x', 2: 'y'}
+NAME = {1: 'L1 插槽面（优选 x）', 2: 'L4 器件面（优选 y）'}
+for path in (sys.argv[1:] or [os.path.join(HERE, '_base_routes.json')]):
+    d = json.load(io.open(path, encoding='utf-8'))
+    print(u'%s：%d 段 / %d 孔 / 未完成 %d' % (os.path.basename(path), len(d['segs']), len(d['vias']), len(d['logs'])))
+    for l in (1, 2):
+        a = {'顺': 0.0, '逆': 0.0, '斜': 0.0}
+        for s in d['segs']:
+            if s[0] != l:
+                continue
+            dx, dy = abs(s[3] - s[1]), abs(s[4] - s[2])
+            L = math.hypot(dx, dy)
+            if dx > 1e-6 and dy > 1e-6:
+                a['斜'] += L
+            elif (dx > dy) == (PREF[l] == 'x'):
+                a['顺'] += L
+            else:
+                a['逆'] += L
+        t = sum(a.values()) or 1.0
+        print(u'   %s  总 %7.1f mm：顺 %5.1f%%  逆 %5.1f%%  斜 %5.1f%%'
+              % (NAME[l], t, 100 * a['顺'] / t, 100 * a['逆'] / t, 100 * a['斜'] / t))