feat: 新增边缘查找拟合圆工具 + 优化拟合交互

- 新增 EdgeCircleFitProcessor 算子（卡尺径向边缘检测 + Kasa/RANSAC圆拟合）
- 新增 EdgeCircleFitPanel 辅助面板（拖拽画圆交互）
- Ribbon快捷工具组新增「圆拟合」按钮
- 拟合后卡尺保持可编辑状态，支持调整后重新拟合
- 每次拟合自动清除上一次结果
- 拟合方法固定RANSAC，UI不暴露选择
- 结果标注简化：直线显示角度，圆显示半径和圆心坐标
- 不再显示内点/外点小圆点
- 添加中英文本地化资源

XP.Common/Resources/Resources.zh-CN.resx

@@ -1937,4 +1937,66 @@
   <data name="EdgeLineFitProcessor_Thickness_Desc" xml:space="preserve">
     <value>绘制结果的线条粗细</value>
   </data>
+
+  <!-- EdgeCircleFitProcessor -->
+  <data name="EdgeCircleFitProcessor_Name" xml:space="preserve">
+    <value>边缘查找拟合圆</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_Description" xml:space="preserve">
+    <value>沿预估圆周放置卡尺检测边缘点，拟合圆（支持最小二乘和RANSAC）</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_CaliperCount" xml:space="preserve">
+    <value>卡尺数量</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_CaliperCount_Desc" xml:space="preserve">
+    <value>沿圆周等角度放置的卡尺数量</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_CaliperWidth" xml:space="preserve">
+    <value>卡尺宽度</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_CaliperWidth_Desc" xml:space="preserve">
+    <value>每个卡尺沿径向的搜索长度（像素）</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_EdgePolarity" xml:space="preserve">
+    <value>边缘极性</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_EdgePolarity_Desc" xml:space="preserve">
+    <value>边缘方向：BrightToDark（亮到暗）、DarkToBright（暗到亮）、Both（双向）</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_EdgeThreshold" xml:space="preserve">
+    <value>边缘阈值</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_EdgeThreshold_Desc" xml:space="preserve">
+    <value>边缘梯度强度阈值，低于此值的边缘将被忽略</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_Sigma" xml:space="preserve">
+    <value>平滑Sigma</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_Sigma_Desc" xml:space="preserve">
+    <value>高斯平滑的标准差，用于抑制噪声</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_SearchDirection" xml:space="preserve">
+    <value>搜索方向</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_SearchDirection_Desc" xml:space="preserve">
+    <value>卡尺搜索方向：Inward（向圆心）、Outward（背离圆心）、Both（双向）</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_FitMethod" xml:space="preserve">
+    <value>拟合方法</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_FitMethod_Desc" xml:space="preserve">
+    <value>圆拟合算法：LeastSquares（最小二乘）、RANSAC（鲁棒拟合）</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_RansacThreshold" xml:space="preserve">
+    <value>RANSAC阈值</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_RansacThreshold_Desc" xml:space="preserve">
+    <value>RANSAC内点判定距离阈值（像素），点到圆周距离小于此值视为内点</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_Thickness" xml:space="preserve">
+    <value>线条粗细</value>
+  </data>
+  <data name="EdgeCircleFitProcessor_Thickness_Desc" xml:space="preserve">
+    <value>绘制结果的线条粗细</value>
+  </data>
 </root>