feat: 引入 ECharts 统一图表并完善员工画像标签分页

后端优化员工行为画像服务和辅助函数，完善系统设置模型和
配置持久化，前端引入 ECharts 替换所有图表组件实现统一
渲染，新增员工画像标签分页器和数字员工工作记录组件，优
化工作台响应式布局和登录页过渡动画，完善预算中心和数字
员工页面样式细节。

web/src/composables/useEcharts.js

@@ -0,0 +1,79 @@
+import { nextTick, onBeforeUnmount, onMounted, watch } from 'vue'
+import { init } from 'echarts/core'
+
+export function useEcharts(chartElement, chartOptions) {
+  let chartInstance = null
+  let resizeObserver = null
+  let renderFrame = 0
+
+  function renderChart() {
+    if (!chartElement.value) {
+      return
+    }
+    if (!chartInstance) {
+      chartInstance = init(chartElement.value, null, { renderer: 'canvas' })
+      chartInstance.resize()
+    }
+    chartInstance.setOption(chartOptions.value, true)
+  }
+
+  function handleResize() {
+    chartInstance?.resize()
+  }
+
+  function scheduleRender() {
+    if (typeof window === 'undefined') {
+      renderChart()
+      return
+    }
+    if (renderFrame) {
+      window.cancelAnimationFrame(renderFrame)
+    }
+    renderFrame = window.requestAnimationFrame(() => {
+      renderFrame = 0
+      renderChart()
+    })
+  }
+
+  function bindResize() {
+    if (!chartElement.value) {
+      return
+    }
+    if (typeof ResizeObserver !== 'undefined') {
+      resizeObserver = new ResizeObserver(handleResize)
+      resizeObserver.observe(chartElement.value)
+    }
+    window.addEventListener('resize', handleResize)
+  }
+
+  function unbindResize() {
+    resizeObserver?.disconnect()
+    resizeObserver = null
+    window.removeEventListener('resize', handleResize)
+  }
+
+  onMounted(() => {
+    renderChart()
+    bindResize()
+  })
+
+  onBeforeUnmount(() => {
+    unbindResize()
+    if (renderFrame && typeof window !== 'undefined') {
+      window.cancelAnimationFrame(renderFrame)
+      renderFrame = 0
+    }
+    if (chartInstance) {
+      chartInstance.dispose()
+      chartInstance = null
+    }
+  })
+
+  watch(chartOptions, () => {
+    nextTick(scheduleRender)
+  }, { deep: true })
+
+  return {
+    renderChart
+  }
+}