feat: 扩展 ECharts 第二阶段图表支持

新增 tree、treemap、sunburst、graph、sankey、chord、funnel、gauge 和 pictorialBar 系列，并注册对应的 ECharts 按需模块。

完善层级与关系数据校验、节点和边数量限制、默认布局及错误占位规则，同时补充默认 Markdown 与 README 示例。

静态渲染全局关闭 ECharts 动画，修复 Treemap 标签冻结在透明动画帧的问题，并完成快速预览、精确 PDF、容器镜像和 147 项全项目测试验证。

packages/markdown-echarts/src/security-policy.ts

@@ -11,6 +11,9 @@ export interface EChartsSecurityLimits {
   maxArrayLength: number;
   maxStringLength: number;
   maxSeries: number;
+  maxHierarchyNodes: number;
+  maxGraphNodes: number;
+  maxGraphEdges: number;
 }
 
 export const defaultEChartsSecurityLimits: EChartsSecurityLimits = {
@@ -19,7 +22,10 @@ export const defaultEChartsSecurityLimits: EChartsSecurityLimits = {
   maxObjectKeys: 1_000,
   maxArrayLength: 20_000,
   maxStringLength: 100_000,
-  maxSeries: 32
+  maxSeries: 32,
+  maxHierarchyNodes: 5_000,
+  maxGraphNodes: 5_000,
+  maxGraphEdges: 10_000
 };
 
 const forbiddenPropertyNames = new Set([
@@ -257,6 +263,86 @@ function assertSupportedSeries(
         `option.series.${index}.type 暂不支持 ${String(type)}`
       );
     }
+    assertSeriesStructureLimits(item, index, type, limits);
+  }
+}
+
+function countHierarchyNodes(
+  value: JsonValue | undefined,
+  limit: number,
+  path: string
+) {
+  if (!Array.isArray(value)) {
+    return;
+  }
+  let count = 0;
+  const pending = [...value];
+  while (pending.length > 0) {
+    const node = pending.pop();
+    count += 1;
+    if (count > limit) {
+      throw new EChartsFenceError(
+        "LIMIT_EXCEEDED",
+        `${path} 层级节点数量不能超过 ${limit}`
+      );
+    }
+    if (
+      node !== null &&
+      !Array.isArray(node) &&
+      typeof node === "object" &&
+      Array.isArray(node.children)
+    ) {
+      pending.push(...node.children);
+    }
+  }
+}
+
+function arrayLength(value: JsonValue | undefined) {
+  return Array.isArray(value) ? value.length : 0;
+}
+
+function assertSeriesStructureLimits(
+  series: Record<string, JsonValue>,
+  seriesIndex: number,
+  type: string,
+  limits: EChartsSecurityLimits
+) {
+  const path = `option.series.${seriesIndex}`;
+  if (
+    type === "tree" ||
+    type === "treemap" ||
+    type === "sunburst"
+  ) {
+    countHierarchyNodes(
+      series.data,
+      limits.maxHierarchyNodes,
+      `${path}.data`
+    );
+    return;
+  }
+  if (
+    type !== "graph" &&
+    type !== "sankey" &&
+    type !== "chord"
+  ) {
+    return;
+  }
+
+  const nodeCount =
+    arrayLength(series.data) + arrayLength(series.nodes);
+  if (nodeCount > limits.maxGraphNodes) {
+    throw new EChartsFenceError(
+      "LIMIT_EXCEEDED",
+      `${path} 节点数量不能超过 ${limits.maxGraphNodes}`
+    );
+  }
+  const edgeCount =
+    arrayLength(series.links) + arrayLength(series.edges);
+  if (edgeCount > limits.maxGraphEdges) {
+    throw new EChartsFenceError(
+      "LIMIT_EXCEEDED",
+      `${path} 边数量不能超过 ${limits.maxGraphEdges}`
+    );
   }
 }