feat(map): add coordinate zoom action

src/components/chat/ChatToolCallBlock.tsx

@@ -118,6 +118,12 @@ const TOOL_META: Record<string, ToolMeta> = {
     actionLabel: "定位到地图",
     color: "#3ba272",
   },
+  zoom_to_map: {
+    label: "缩放到坐标",
+    icon: <LocationOnRounded sx={{ fontSize: 18 }} />,
+    actionLabel: "缩放到地图",
+    color: "#0ea5e9",
+  },
   view_history: {
     label: "查看计算结果",
     icon: <TimelineRounded sx={{ fontSize: 18 }} />,
@@ -176,6 +182,46 @@ function normalizeLocateIds(params: Record<string, unknown>): string[] {
   return [];
 }
 
+function readFiniteNumber(value: unknown): number | null {
+  if (typeof value === "number" && Number.isFinite(value)) {
+    return value;
+  }
+  if (typeof value === "string" && value.trim()) {
+    const parsed = Number(value);
+    return Number.isFinite(parsed) ? parsed : null;
+  }
+  return null;
+}
+
+function buildZoomTo3857Action(
+  params: Record<string, unknown>,
+): Extract<ChatToolAction, { type: "zoom_to_map" }> | null {
+  const rawCoordinate = params.coordinate ?? params.coordinates ?? params.center;
+  const tuple = Array.isArray(rawCoordinate)
+    ? rawCoordinate
+    : [params.x ?? params.lon ?? params.longitude, params.y ?? params.lat ?? params.latitude];
+  const x = readFiniteNumber(tuple[0]);
+  const y = readFiniteNumber(tuple[1]);
+  if (x === null || y === null) {
+    return null;
+  }
+
+  const zoom = readFiniteNumber(params.zoom);
+  const durationMs = readFiniteNumber(params.duration_ms ?? params.durationMs);
+  const rawSourceCrs = params.source_crs ?? params.sourceCrs ?? params.crs;
+  const normalizedSourceCrs =
+    typeof rawSourceCrs === "string" ? rawSourceCrs.trim().toUpperCase() : "";
+  const sourceCrs =
+    normalizedSourceCrs === "EPSG:4326" ? "EPSG:4326" : "EPSG:3857";
+  return {
+    type: "zoom_to_map",
+    coordinate: [x, y],
+    sourceCrs,
+    zoom: zoom ?? undefined,
+    durationMs: durationMs ?? undefined,
+  };
+}
+
 function getToolDescription(toolCall: ToolCall): string {
   const { params } = toolCall;
   const resolveScadaFeatureInfos = (): [string, string][] => {
@@ -281,6 +327,14 @@ function getToolDescription(toolCall: ToolCall): string {
     case "render_junctions": {
       return (params.render_ref as string | undefined) ?? "渲染引用";
     }
+    case "zoom_to_map": {
+      const action = buildZoomTo3857Action(params);
+      if (!action) {
+        return "地图坐标";
+      }
+      const zoom = action.zoom === undefined ? "" : ` · zoom ${action.zoom}`;
+      return `${action.coordinate[0]}, ${action.coordinate[1]} · ${action.sourceCrs}${zoom}`;
+    }
     case APPLY_LAYER_STYLE_TOOL: {
       const payload = parseApplyLayerStylePayload(params);
       return payload ? describeApplyLayerStyle(payload) : "图层样式";
@@ -341,6 +395,8 @@ function buildAction(toolCall: ToolCall): ChatToolAction | null {
       (params.end as string | undefined),
   });
   switch (toolCall.tool) {
+    case "zoom_to_map":
+      return buildZoomTo3857Action(params);
     case "locate_features": {
       const featureTypeRaw = params.feature_type;
       const featureType =