autocal: 新增单位与换算页（默认锁定）及轴页报警与事件日志

- 设备设置新增“单位与换算”页：显示各轴 UNITS、读回值、脉冲/mm 换算与核对状态；
  默认锁定，点击“修改”后才可编辑，应用前弹窗确认，旋转轴偏离标定值时额外警告
- 轴调试页：脉冲当量改为只读并提供入口；新增报警与事件日志（报警、使能、
  回零、读取失败、单位不符等）及单位核对摘要
- 新增 motion/unit_report.py、motion/events.py 及对应测试

apps/autocal/src/orisys_autocal/ui/units_page.py

@@ -23,6 +23,7 @@ from PySide6.QtCore import Qt, Signal
 from PySide6.QtGui import QBrush, QColor
 from PySide6.QtWidgets import (
     QHBoxLayout,
+    QHeaderView,
     QLabel,
     QLineEdit,
     QMessageBox,
@@ -60,7 +61,9 @@ COLUMNS = (
     "units.col_check",
 )
 CONFIGURED_COLUMN = 3
-ROW_HEIGHT = 34
+STRETCH_COLUMNS = (0, 5, 6)
+ROW_HEIGHT = 40
+EDIT_HEIGHT = 26
 
 _ROLE_KEYS = {
     "x": "setup.role_x",
@@ -116,7 +119,7 @@ class UnitsPage(QWidget):
 
         column = QVBoxLayout(self)
         column.setContentsMargins(8, 8, 8, 8)
-        column.setSpacing(8)
+        column.setSpacing(10)
 
         self.hint_label = QLabel(self)
         self.hint_label.setObjectName("hintLabel")
@@ -153,10 +156,23 @@ class UnitsPage(QWidget):
         self.table.setEditTriggers(QTableWidget.EditTrigger.NoEditTriggers)
         self.table.setAlternatingRowColors(True)
         self.table.verticalHeader().setDefaultSectionSize(ROW_HEIGHT)
-        self.table.horizontalHeader().setStretchLastSection(True)
-        for index, width in enumerate((110, 60, 90, 110, 100, 230)):
-            self.table.setColumnWidth(index, width)
-        self.table.setMinimumHeight(40 + ROW_HEIGHT * 5 + 4)
+        self.table.setHorizontalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAlwaysOff)
+        self.table.setVerticalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAlwaysOff)
+        self.table.setWordWrap(False)
+        self.table.setTextElideMode(Qt.TextElideMode.ElideRight)
+        header = self.table.horizontalHeader()
+        header.setMinimumSectionSize(48)
+        header.setDefaultAlignment(Qt.AlignmentFlag.AlignCenter)
+        # Short columns size to their text; the wide ones share what is left, so the
+        # table always fits the dialog and never needs a scroll bar.
+        for index in range(len(COLUMNS)):
+            header.setSectionResizeMode(
+                index,
+                QHeaderView.ResizeMode.Stretch
+                if index in STRETCH_COLUMNS
+                else QHeaderView.ResizeMode.ResizeToContents,
+            )
+        self.table.setFixedHeight(header.height() + ROW_HEIGHT * 5 + 6)
         for row in range(5):
             for col in range(len(COLUMNS)):
                 if col != CONFIGURED_COLUMN:
@@ -243,7 +259,13 @@ class UnitsPage(QWidget):
             edit = QLineEdit(self.table)
             edit.setObjectName(f"unitsEdit_{row.role}")
             edit.setAlignment(Qt.AlignmentFlag.AlignCenter)
-            edit.setFixedHeight(28)
+            edit.setFixedHeight(EDIT_HEIGHT)
+            edit.setMinimumWidth(84)
+            # The global style gives line edits generous padding; inside a table cell
+            # that clips the text, so the cell edit is compact.
+            edit.setStyleSheet(
+                "QLineEdit { padding: 0 6px; margin: 0; min-height: 0; border-radius: 4px; }"
+            )
             self._edits[row.role] = edit
             self.table.setCellWidget(index, CONFIGURED_COLUMN, edit)
         edit.setReadOnly(self._locked)