fix: preserve SCADA comparison device coverage

src/features/agent/presentation/command-schema.ts

@@ -9,6 +9,7 @@ export function createChartSampleTimeSchema(zod: typeof z = z) {
 
 type PublicationChart = {
   chart_type: string;
+  scada?: { role: "current" | "comparison"; window_start: string };
   x_data: string[];
   series: Array<{ type?: string; data: Array<number | null>; sample_times?: Array<string | null> }>;
 };
@@ -56,8 +57,12 @@ export function chartPublicationError(chart: PublicationChart): string | null {
     if ((series.type ?? "line") === "line") for (const base of bases) current.add(base);
     else historical.push(...bases);
   }
-  if (current.size !== 1) return "当前 line 必须包含真实采样时间，且所有当前曲线使用同一窗口";
+  const emptyScada = current.size === 0 && chart.scada?.role === "comparison";
-  const start = [...current][0];
+  if (current.size !== 1 && !emptyScada) return "当前 line 必须包含真实采样时间，且所有当前曲线使用同一窗口";
+  const windowStart = emptyScada ? Date.parse(chart.scada!.window_start) + 8 * 3600_000 : 0;
+  const midnight = Math.floor(windowStart / 86400_000) * 86400_000;
+  const firstSlot = midnight + seconds[0] * 1000;
+  const start = emptyScada ? firstSlot + (firstSlot < windowStart ? 86400_000 : 0) : [...current][0];
   return historical.some((base) => start <= base || (start - base) % 86400_000 !== 0)
     ? "历史 scatter 必须来自当前窗口之前的对应日期" : null;
 }
@@ -67,9 +72,25 @@ export function createViewSchemas(zod: typeof z = z, publication = false, valida
   const z = zod;
 
   const presentationIdentifierSchema = z.string().trim().min(1).max(128);
+  const scadaChartSchema = z.object({
+    role: z.enum(["current", "comparison"]),
+    metric: z.enum(["pressure", "flow"]),
+    unit: presentationIdentifierSchema,
+    window_start: createChartSampleTimeSchema(z),
+    window_end: createChartSampleTimeSchema(z),
+    value_field: z.enum(["monitored_value", "cleaned_value"]).optional(),
+    // Populated by Server after checking observations, never a display exemption.
+    gaps: z.array(z.object({
+      device_id: presentationIdentifierSchema,
+      day_offset: z.number().int().min(0).max(7),
+      missing_count: z.number().int().min(1).max(100),
+      reason: z.enum(["no_readings", "outside_frozen_scope", "outside_frozen_window", "no_scheduled_samples"])
+    }).strict()).max(8).optional()
+  }).strict();
   const chartSchema = z
     .object({
       title: z.string().max(200),
+      scada: scadaChartSchema.optional(),
       chart_type: z.enum(["line", "bar", "time_comparison"]),
       x_axis_name: z.string().max(128).optional(),
       y_axis_name: z.string().max(128).optional(),
@@ -79,6 +100,8 @@ export function createViewSchemas(zod: typeof z = z, publication = false, valida
           z
             .object({
               name: z.string().max(128),
+              device_id: presentationIdentifierSchema.optional(),
+              day_offset: z.number().int().min(0).max(7).optional(),
               type: z.enum(["line", "bar", "scatter"]).optional(),
               data: z.array(z.number().finite().nullable()).min(1).max(100),
               sample_times: z.array(createChartSampleTimeSchema(z).nullable()).min(1).max(100).optional()

src/features/workbench/api/investigation-report.ts

@@ -85,7 +85,8 @@ export const investigationReportSchema = z
     stop_reason: text.nullish(),
     data_gaps: z.array(dataGapSchema).nullish(),
     diagram: investigationDiagramSchema.nullish(),
-    ui_blocks: reportUiBlocksSchema.optional()
+    ui_blocks: reportUiBlocksSchema.optional(),
+    scada_device_ids: z.array(text).max(1000).nullish()
   })
   .strict()
   .superRefine((report, ctx) => {

src/features/workbench/components/investigation-chart-group.tsx

@@ -34,6 +34,14 @@ export function InvestigationChartGroup({ group, reviewing, onCloseChart, refere
   const selected = group.items.find((item) => item.command.chart_id === selectedId) ?? group.items[0];
   const multiple = group.items.length > 1;
   const title = formatChartDisplayText(multiple ? group.title : selected.command.chart.title);
+  const gaps = selected.command.chart.scada?.gaps ?? [];
+  const missingCurrent = gaps.filter((gap) => gap.day_offset === 0 && gap.reason !== "no_scheduled_samples").reduce((sum, gap) => sum + gap.missing_count, 0);
+  const missingHistory = gaps.filter((gap) => gap.day_offset > 0 && gap.reason !== "no_scheduled_samples").reduce((sum, gap) => sum + gap.missing_count, 0);
+  const gapNotice = gaps.length ? <p role="status" aria-label="监测数据缺口" className="shrink-0 text-xs text-muted-foreground">
+    {[missingCurrent ? `当前缺测 ${missingCurrent} 点` : "", missingHistory ? `历史缺测 ${missingHistory} 点` : "",
+      gaps.some((gap) => gap.reason.startsWith("outside_frozen_")) ? "部分数据不在冻结范围内" : "",
+      gaps.some((gap) => gap.reason === "no_scheduled_samples") ? "窗口内无计划采样点" : ""].filter(Boolean).join("；")}，已保留空槽。
+  </p> : null;
   const objectButtons = (compact = false) => <aside aria-label="选择图表对象"
     className={compact ? "hidden min-h-0 min-w-0 overflow-auto border-l border-border pl-2 @min-[420px]:block" : "min-h-0 min-w-0 overflow-auto border-t border-border pt-3 @min-[560px]:border-t-0 @min-[560px]:border-l @min-[560px]:pl-3 @min-[560px]:pt-0"}>
     <div className={`${compact ? "mb-1" : "mb-2"} flex items-center justify-between text-[11px] text-muted-foreground`}>
@@ -51,6 +59,7 @@ export function InvestigationChartGroup({ group, reviewing, onCloseChart, refere
     </div>
   </aside>;
   const content = (expanded: boolean, compact = false) => compact ? <div className="@container flex h-full min-h-0 min-w-0 flex-col gap-1">
+    {gapNotice}
     {multiple ? <div className="shrink-0 @min-[420px]:hidden">
       <Select value={selected.command.chart_id} onValueChange={setSelectedId}>
         <SelectTrigger aria-label="选择图表对象" className="h-7 text-xs"><SelectValue /></SelectTrigger>
@@ -62,6 +71,7 @@ export function InvestigationChartGroup({ group, reviewing, onCloseChart, refere
       {multiple ? objectButtons(true) : null}
     </div>
   </div> : <div className={`@container min-w-0 ${expanded ? "flex h-full min-h-0 flex-col" : ""}`}>
+    {gapNotice}
     <div className={`grid min-w-0 grid-cols-1 gap-3 ${expanded ? multiple ? "flex-none @min-[560px]:min-h-0 @min-[560px]:flex-1" : "min-h-0 flex-1 grid-rows-1" : ""} ${multiple ? "@min-[560px]:grid-cols-[minmax(0,1fr)_176px] @min-[560px]:grid-rows-1" : ""}`}>
       <div className={`min-w-0 ${expanded ? `flex min-h-0 flex-col ${multiple ? "h-[480px] @min-[560px]:h-full" : "h-full"}` : ""}`}>
         {multiple ? <p className="mb-1 shrink-0 text-xs font-medium tabular-nums">{selected.label}<span className="ml-2 font-normal text-muted-foreground">{selected.command.chart.x_data[0]} 至 {selected.command.chart.x_data.at(-1)}</span></p> : null}

src/features/workbench/utils/investigation-chart-groups.test.ts

@@ -21,6 +21,32 @@ const legacyComparison = (id: string, metric = "压力", unit = "m", date = "202
 };
 
 describe("investigation comparison groups", () => {
+  it("groups all four bound devices even when titles differ and one device has no observations", () => {
+    const ids = ["486033", "542017", "541061", "524529"];
+    const charts = ids.map((id, index) => {
+      const command = comparison(id, "流量", "m3/h");
+      command.chart.title = `不同的标题 ${index}`;
+      command.chart.scada = { role: "comparison", metric: "flow", unit: "m3/h",
+        window_start: "2026-07-16T05:00:00+08:00", window_end: "2026-07-16T08:00:00+08:00" };
+      command.chart.series.forEach((series, offset) => {
+        series.device_id = id;
+        series.day_offset = offset;
+        series.name = offset ? "历史" : "当前";
+        if (id === "524529") { series.data = [null, null]; series.sample_times = [null, null]; }
+      });
+      return command;
+    });
+    const groups = groupInvestigationCharts(charts);
+    expect(groups).toHaveLength(1);
+    expect(groups[0].items.map((item) => item.label)).toEqual(ids);
+    expect(groups[0].id).toBe(groupInvestigationCharts([charts[3]])[0].id);
+    expect(groups[0].items[3].command).toBe(charts[3]);
+    charts[3].chart.scada!.unit = "m³/h";
+    charts[3].chart.scada!.window_start = "2026-07-15T21:00:00Z";
+    charts[3].chart.scada!.window_end = "2026-07-16T00:00:00Z";
+    expect(groupInvestigationCharts(charts)).toHaveLength(1);
+  });
+
   it("groups pressure objects and pipe flow objects separately without changing data or evidence", () => {
     const charts = [comparison("170486"), comparison("175618"), comparison("542017", "管流", "m³/h"), comparison("486033", "管流", "m³/h")];
     const groups = groupInvestigationCharts(charts);

src/features/workbench/utils/investigation-chart-groups.ts

@@ -44,10 +44,19 @@ export function groupInvestigationCharts(charts: InvestigationChart[]): Investig
   const groups = new Map<string, InvestigationChartGroup>();
   for (const command of charts) {
     const { chart } = command;
+    const scada = chart.scada;
+    const boundDevices = new Set(chart.series.map((series) => series.device_id));
+    const typed = scada?.role === "comparison" && boundDevices.size === 1 &&
+      !boundDevices.has(undefined) && chart.series.every((series) => series.day_offset !== undefined);
     const match = /^(?:(压力|流量)测点\s+|测点\s+)?([A-Za-z0-9][A-Za-z0-9_.-]*)\s+(.+)$/.exec(chart.title);
-    const object = match ? { id: match[2], title: `${match[1] ?? ""}${match[3]}` } : null;
+    const object = typed ? {
-    const comparable = object && chart.series.some((series) => series.type === "scatter") && matchesObjectSeries(command, object.id);
+      id: chart.series[0].device_id!,
-    const id = comparable ? JSON.stringify([
+      title: `${scada.metric === "pressure" ? "压力" : "流量"}当前曲线与前七天同期对比（${scada.unit}）`
+    } : match ? { id: match[2], title: `${match[1] ?? ""}${match[3]}` } : null;
+    const comparable = object && (typed || chart.series.some((series) => series.type === "scatter") && matchesObjectSeries(command, object.id));
+    const id = typed ? JSON.stringify(["scada-comparison", scada.metric, scada.unit.replace("³", "3").replace(/\s/g, "").toLowerCase(),
+      Date.parse(scada.window_start), Date.parse(scada.window_end), scada.value_field ?? "monitored_value", chart.x_data
+    ]) : comparable ? JSON.stringify([
       object.title, chart.chart_type, chart.x_axis_name, chart.y_axis_name, chart.x_data,
       chart.series.filter((series) => series.type !== "scatter").map((series) => [
         series.name.slice(object.id.length).trim(), series.sample_times ?? null

tests/browser/scada-presentation-coverage.e2e.ts

@@ -0,0 +1,54 @@
+import { expect, test } from "@playwright/test";
+import { basename, resolve } from "node:path";
+import { investigationFixture, mockInvestigationPresentation, selectInvestigation } from "./support/mock-investigation-presentation";
+
+const ids = ["486033", "542017", "541061", "524529"];
+const times = Array.from({ length: 13 }, (_, index) => `${String(5 + Math.floor(index / 4)).padStart(2, "0")}:${String(index % 4 * 15).padStart(2, "0")}`);
+const series = (id: string, day: number, missing = false) => ({
+  name: `${id} ${day ? `07-${String(16 - day).padStart(2, "0")}` : "当日"}`,
+  device_id: id, day_offset: day, type: day ? "scatter" : "line",
+  data: times.map((_, index) => missing || day > 0 && index < 10 ? null : 200 + index * 10),
+  sample_times: times.map((time, index) => missing || day > 0 && index < 10 ? null : `2026-07-${String(16 - day).padStart(2, "0")}T${time}:00+08:00`)
+});
+
+test("keeps four SCADA comparison objects and explains verified missing history", async ({ page }, testInfo) => {
+  test.setTimeout(60_000);
+  await page.route("**/@fs/**/noto-sans-sc-*.woff2", (route) => route.fulfill({
+    path: resolve("node_modules/@fontsource-variable/noto-sans-sc/files", basename(new URL(route.request().url()).pathname)), contentType: "font/woff2"
+  }));
+  const task = investigationFixture(1, "SCADA展示覆盖核查");
+  const mock = await mockInvestigationPresentation(page, [task]);
+  await selectInvestigation(page, task.title);
+  const context = { metric: "flow", unit: "m3/h", window_start: "2026-07-16T05:00:00+08:00", window_end: "2026-07-16T08:00:00+08:00" };
+  await mock.emit(task, { action: "open_chart", chart_id: "flow-current", evidence_refs: ["synthetic:flow"], chart: {
+    title: "流量当前三小时趋势", chart_type: "line", x_data: times,
+    scada: { ...context, role: "current" }, series: ids.map((id) => series(id, 0))
+  } });
+  for (const id of ids) {
+    await mock.emit(task, { action: "open_chart", chart_id: `flow-${id}`, evidence_refs: ["synthetic:flow"], chart: {
+      title: `${id} 流量同期对比`, chart_type: "time_comparison", x_data: times,
+      scada: { ...context, role: "comparison", gaps: id === "524529" ? Array.from({ length: 7 }, (_, day) => ({
+        device_id: id, day_offset: day + 1, missing_count: 3, reason: day < 3 ? "no_readings" : "outside_frozen_window"
+      })) : [] },
+      series: Array.from({ length: 8 }, (_, day) => series(id, day, id === "524529" && day > 0))
+    } });
+    await expect(page.locator(`[data-presentation-scope="investigation"] [data-investigation-chart="flow-${id}"]`)).toHaveCount(1);
+  }
+  await page.getByRole("dialog", { name: "图表管理", exact: true }).getByRole("button", { name: "关闭窗口", exact: true }).click();
+  const panel = page.getByLabel("调查实时展示", { exact: true });
+  await panel.getByRole("button", { name: /放大查看 流量当前曲线与前七天同期对比/ }).click();
+  const dialog = page.getByRole("dialog", { name: /流量当前曲线与前七天同期对比/ });
+  const objects = dialog.getByLabel("选择图表对象");
+  await expect(objects.getByRole("button")).toHaveCount(4);
+  await expect(objects).toContainText("4 个");
+  await objects.getByRole("button", { name: "切换对象 524529", exact: true }).click();
+  await expect(dialog.getByLabel("监测数据缺口")).toContainText("历史缺测 21 点");
+  await expect(dialog.getByLabel("监测数据缺口")).toContainText("部分数据不在冻结范围内");
+  await expect(dialog.getByRole("img", { name: "524529 流量同期对比", exact: true })).toBeVisible();
+  expect(await dialog.evaluate((element) => element.scrollWidth - element.clientWidth)).toBeLessThanOrEqual(1);
+  await page.evaluate(() => document.fonts.ready);
+  await testInfo.attach("scada-four-objects-missing-history", {
+    body: await dialog.screenshot({ path: testInfo.outputPath("scada-four-objects.png") }), contentType: "image/png"
+  });
+  expect(mock.mutations).toEqual([]);
+});