FN-6650: add Overview analytics charts

Add graph-rich Overview visuals to the Command Center using existing analytics data.

- Add tokens-by-model, tool-category, and daily activity chart cards to the Overview tab.
- Style the chart section with responsive dashboard-token layouts and reduced-motion safeguards.
- Cover populated, partial, edge-case, and mobile-scroll chart rendering in tests.
- Document the Overview charts and add a patch changeset for the published CLI package.

Files changed:
 .../fn-6650-command-center-overview-charts.md      |   5 +
 docs/dashboard-guide.md                            |   2 +-
 .../components/command-center/CommandCenter.css    | 111 +++++++++++++++++++++
 .../components/command-center/CommandCenter.tsx    |  73 +++++++++++++-
 .../__tests__/CommandCenter.mobile-scroll.test.tsx |  73 +++++++++++++-
 .../__tests__/CommandCenter.test.tsx               |  58 +++++++++++
 6 files changed, 313 insertions(+), 9 deletions(-)

Fusion-Task-Id: FN-6650
Fusion-Task-Lineage: 227f5809-ed71-42fb-8847-b137dbef6ac7

.changeset/fn-6650-command-center-overview-charts.md

@@ -0,0 +1,5 @@
+---
+"@runfusion/fusion": patch
+---
+
+Add attractive Command Center Overview charts for tokens by model, tool categories, and daily activity using existing analytics data.

docs/dashboard-guide.md

@@ -663,7 +663,7 @@ Navigation:
 
 Features:
 - Global date-range picker in the header scopes the analytics tabs; **Mission Control** remains live rather than historical.
-- **Overview** summarizes token usage/cost, autonomy, active nodes, tasks done, model breadth, and open signals, and includes the SDLC throughput funnel for the selected range. The SDLC completion rate is shown as a radial gauge and is calculated as cohort conversion from in-range triage entrants, so the rate is capped at 100% even when older tasks finish during the range.
+- **Overview** summarizes token usage/cost, autonomy, active nodes, tasks done, model breadth, and open signals, and includes the SDLC throughput funnel for the selected range. It also shows a graph-rich software-factory snapshot with tokens-by-model, tool-category, and daily activity trend charts that reuse the already-loaded tokens, tools, and activity analytics; no extra endpoint is called. The chart reveal/glow accents are decorative and disabled when reduced-motion preferences are active. The SDLC completion rate is shown as a radial gauge and is calculated as cohort conversion from in-range triage entrants, so the rate is capped at 100% even when older tasks finish during the range.
 - **Tokens** breaks down token totals, estimated cost, tasks, and per-model usage.
 - **Tools** shows autonomy ratio, tool-call volume, intervention counts, sessions, and tool categories.
 - **Activity** tracks sessions, messages, active nodes, active agents, stickiness, and daily activity sparklines.

packages/dashboard/app/components/command-center/CommandCenter.css

@@ -238,6 +238,109 @@ The Command Center must remain scrollable on mobile inside the overflow-hidden .
   }
 }
 
+/*
+FNXC:CommandCenterStyling 2026-06-18-00:00:
+Overview charts must use dashboard tokens only and keep motion decorative; animations use --duration-* values and are disabled for reduced-motion users so the graph-rich snapshot does not violate accessibility or the mobile scroll contract.
+*/
+.cc-overview-charts {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: var(--space-3);
+  align-items: stretch;
+}
+
+.cc-overview-chart-card {
+  position: relative;
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-3);
+  min-width: 0;
+  padding: var(--space-3);
+  border-color: color-mix(in srgb, var(--color-accent) 22%, var(--border-subtle));
+  background:
+    linear-gradient(145deg, color-mix(in srgb, var(--color-accent) 10%, transparent), transparent),
+    var(--surface-1);
+  box-shadow: 0 0 var(--space-4) color-mix(in srgb, var(--color-accent) 12%, transparent);
+  overflow: hidden;
+  animation: cc-overview-chart-rise var(--duration-normal) ease-out both;
+}
+
+.cc-overview-chart-card--trend {
+  grid-column: 1 / -1;
+}
+
+.cc-overview-chart-card::before {
+  content: "";
+  position: absolute;
+  inset: 0;
+  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--color-accent) 16%, transparent), transparent);
+  opacity: 0;
+  pointer-events: none;
+  animation: cc-overview-chart-sheen calc(var(--duration-slow) * 7) ease-in-out infinite;
+}
+
+.cc-overview-chart-header {
+  position: relative;
+  z-index: 1;
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-1);
+}
+
+.cc-overview-chart-header p {
+  margin: 0;
+  color: var(--text-muted);
+  font-size: var(--font-size-sm);
+}
+
+.cc-overview-chart-card .cc-bar-chart,
+.cc-overview-chart-card .cc-sparkline {
+  position: relative;
+  z-index: 1;
+}
+
+.cc-overview-chart-card .cc-sparkline {
+  height: var(--space-16);
+}
+
+.cc-overview-chart-card .cc-bar-fill,
+.cc-overview-chart-card .cc-sparkline-bar {
+  box-shadow: 0 0 var(--space-2) color-mix(in srgb, var(--color-accent) 30%, transparent);
+}
+
+@keyframes cc-overview-chart-rise {
+  from {
+    opacity: 0;
+    transform: translateY(var(--space-2));
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}
+
+@keyframes cc-overview-chart-sheen {
+  0% {
+    opacity: 0;
+    transform: translateX(-100%);
+  }
+  45%,
+  55% {
+    opacity: 0.35;
+  }
+  100% {
+    opacity: 0;
+    transform: translateX(100%);
+  }
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .cc-overview-chart-card,
+  .cc-overview-chart-card::before {
+    animation: none;
+  }
+}
+
 @media (max-width: 768px) {
   .cc-live-strip {
     grid-template-columns: 1fr;
@@ -246,6 +349,14 @@ The Command Center must remain scrollable on mobile inside the overflow-hidden .
   .cc-live-strip-metrics {
     grid-template-columns: 1fr;
   }
+
+  .cc-overview-charts {
+    grid-template-columns: 1fr;
+  }
+
+  .cc-overview-chart-card--trend {
+    grid-column: auto;
+  }
 }
 
 /* ---- States ---- */

packages/dashboard/app/components/command-center/CommandCenter.tsx

@@ -1,4 +1,4 @@
-import { useCallback, useEffect, useRef, useState } from "react";
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import { useTranslation } from "react-i18next";
 import { AlertCircle, Gauge } from "lucide-react";
 import type { ActivityAnalytics, TokenAnalytics, ToolAnalytics } from "@fusion/core";
@@ -12,6 +12,7 @@ import { EcosystemArea } from "./areas/EcosystemArea";
 import { SignalsArea } from "./areas/SignalsArea";
 import { MissionControlPanel } from "./MissionControlPanel";
 import { SdlcFunnel } from "./SdlcFunnel";
+import { Bar, type BarDatum } from "./charts/Bar";
 import { Sparkline } from "./charts/Sparkline";
 import { useAnalyticsArea } from "./areas/useAnalyticsArea";
 import { formatCost, formatCount, isInvalidRange, rangeQuery } from "./areas/areaShared";
@@ -105,10 +106,38 @@ function OverviewTab({ range }: { range: DateRange }) {
   const tasksDone = activity.data?.funnel?.doneInRange ?? 0;
   const inProgressTasks = activity.data?.funnel?.stages.find((stage) => stage.stage === "in-progress")?.entered ?? 0;
   const uniqueModels = tokens.data?.groups?.length ?? 0;
+  const tokensByModelData = useMemo<BarDatum[]>(
+    () =>
+      [...(tokens.data?.groups ?? [])]
+        .sort((a, b) => b.totalTokens - a.totalTokens || (a.key ?? "").localeCompare(b.key ?? ""))
+        .slice(0, 8)
+        .map((g) => ({
+          label: g.key ?? t("commandCenter.tokens.unknownModel", "(unknown)"),
+          value: g.totalTokens,
+          valueLabel: formatCount(g.totalTokens),
+        })),
+    [tokens.data?.groups, t],
+  );
+  const toolCategoryData = useMemo<BarDatum[]>(
+    () =>
+      [...(tools.data?.byCategory ?? [])]
+        .sort((a, b) => b.count - a.count || a.category.localeCompare(b.category))
+        .map((c) => ({
+          label: c.category,
+          value: c.count,
+          valueLabel: formatCount(c.count),
+        })),
+    [tools.data?.byCategory],
+  );
+  const dailyActivityValues = useMemo(
+    () => (activity.data?.daily ?? []).map((day) => day.messages + day.activeAgents),
+    [activity.data?.daily],
+  );
   const activityTrendValues =
-    activity.data && activity.data.daily.length > 0
+    dailyActivityValues.length > 0
-      ? activity.data.daily.map((day) => day.messages + day.activeAgents)
+      ? dailyActivityValues
       : [activity.data?.sessions ?? 0, activity.data?.messages ?? 0, activeAgents, activeNodes, tasksDone];
+  const hasOverviewChartData = tokensByModelData.length > 0 || toolCategoryData.length > 0 || dailyActivityValues.length > 0;
   const hasActivityData =
     (activity.data?.sessions ?? 0) > 0 ||
     (activity.data?.messages ?? 0) > 0 ||
@@ -237,6 +266,44 @@ function OverviewTab({ range }: { range: DateRange }) {
           />
         </div>
       </div>
+      {hasOverviewChartData ? (
+        /*
+        FNXC:CommandCenter 2026-06-18-00:00:
+        Overview must present an attractive, graph-rich software-factory snapshot reusing existing tokens/tools/activity analytics with no new endpoint, additive to the live strip and funnel.
+        */
+        <section className="cc-overview-charts" data-testid="command-center-overview-charts">
+          {tokensByModelData.length > 0 ? (
+            <div className="card cc-overview-chart-card" data-testid="command-center-overview-chart-tokens">
+              <div className="cc-overview-chart-header">
+                <h3 className="cc-area-section-title">{t("commandCenter.overview.tokensByModel", "Tokens by model")}</h3>
+                <p>{t("commandCenter.overview.tokensByModelHint", "Top model token consumers in this range")}</p>
+              </div>
+              <Bar data={tokensByModelData} ariaLabel={t("commandCenter.overview.tokensByModel", "Tokens by model")} />
+            </div>
+          ) : null}
+          {toolCategoryData.length > 0 ? (
+            <div className="card cc-overview-chart-card" data-testid="command-center-overview-chart-tools">
+              <div className="cc-overview-chart-header">
+                <h3 className="cc-area-section-title">{t("commandCenter.overview.toolCategories", "Tool categories")}</h3>
+                <p>{t("commandCenter.overview.toolCategoriesHint", "Autonomous work grouped by tool family")}</p>
+              </div>
+              <Bar data={toolCategoryData} ariaLabel={t("commandCenter.overview.toolCategories", "Tool categories")} />
+            </div>
+          ) : null}
+          {dailyActivityValues.length > 0 ? (
+            <div className="card cc-overview-chart-card cc-overview-chart-card--trend" data-testid="command-center-overview-chart-activity">
+              <div className="cc-overview-chart-header">
+                <h3 className="cc-area-section-title">{t("commandCenter.overview.dailyActivity", "Daily activity trend")}</h3>
+                <p>{t("commandCenter.overview.dailyActivityHint", "Messages plus active agents per day")}</p>
+              </div>
+              <Sparkline
+                values={dailyActivityValues}
+                ariaLabel={t("commandCenter.overview.dailyActivityAria", "Daily activity trend")}
+              />
+            </div>
+          ) : null}
+        </section>
+      ) : null}
       {throughputSection}
     </div>
   );

packages/dashboard/app/components/command-center/__tests__/CommandCenter.mobile-scroll.test.tsx

@@ -54,11 +54,65 @@ function emptyActivityFixture() {
   };
 }
 
-function mockEmptyOverviewApi() {
+function populatedTokenFixture() {
+  return {
+    ...emptyTokenFixture(),
+    totals: { inputTokens: 600, outputTokens: 300, cachedTokens: 100, cacheWriteTokens: 0, totalTokens: 1000, nTasks: 3 },
+    cost: { usd: 9, unavailable: false, stale: false },
+    groups: [
+      {
+        key: "gpt-4o",
+        inputTokens: 600,
+        outputTokens: 300,
+        cachedTokens: 100,
+        cacheWriteTokens: 0,
+        totalTokens: 1000,
+        nTasks: 3,
+        cost: { usd: 9, unavailable: false, stale: false },
+      },
+    ],
+  };
+}
+
+function populatedToolsFixture() {
+  return {
+    ...emptyToolsFixture(),
+    toolCalls: 12,
+    byCategory: [{ category: "read", count: 12 }],
+    sessions: 2,
+    autonomyRatio: 6,
+    fullyAutonomous: false,
+  };
+}
+
+function populatedActivityFixture() {
+  return {
+    ...emptyActivityFixture(),
+    sessions: 2,
+    messages: 8,
+    activeNodes: 2,
+    activeAgents: 1,
+    daily: [{ day: "2026-06-08", activeNodes: 2, activeAgents: 1, messages: 8 }],
+    funnel: {
+      ...emptyActivityFixture().funnel,
+      stages: [
+        { stage: "triage", entered: 2, current: 0 },
+        { stage: "in-progress", entered: 1, current: 1 },
+        { stage: "done", entered: 2, current: 2 },
+      ],
+      enteredInRange: 2,
+      doneInRange: 2,
+      completionRate: 1,
+      throughputPerDay: 1,
+    },
+  };
+}
+
+function mockOverviewApi({ populated = false }: { populated?: boolean } = {}) {
   apiMock.mockImplementation((path: string) => {
-    if (path.startsWith("/command-center/tokens")) return Promise.resolve(emptyTokenFixture());
+    if (path.startsWith("/command-center/tokens")) return Promise.resolve(populated ? populatedTokenFixture() : emptyTokenFixture());
-    if (path.startsWith("/command-center/tools")) return Promise.resolve(emptyToolsFixture());
+    if (path.startsWith("/command-center/tools")) return Promise.resolve(populated ? populatedToolsFixture() : emptyToolsFixture());
-    if (path.startsWith("/command-center/activity")) return Promise.resolve(emptyActivityFixture());
+    if (path.startsWith("/command-center/activity")) return Promise.resolve(populated ? populatedActivityFixture() : emptyActivityFixture());
     if (path.startsWith("/command-center/signals")) return Promise.resolve({ totalSignals: 0, open: 0, resolved: 0, mttr: { value: null, unavailable: true }, bySource: [], bySeverity: [] });
     return Promise.reject(new Error(`Unhandled api path: ${path}`));
   });
@@ -111,7 +165,7 @@ function assertScrollOwnerContract(panel: HTMLElement) {
 describe("CommandCenter mobile scroll regression (FN-6595)", () => {
   beforeEach(() => {
     apiMock.mockReset();
-    mockEmptyOverviewApi();
+    mockOverviewApi();
     injectCommandCenterCss();
     mockMobileMatchMedia(true);
   });
@@ -129,6 +183,15 @@ describe("CommandCenter mobile scroll regression (FN-6595)", () => {
     assertScrollOwnerContract(tokensPanel);
   });
 
+  it("preserves the mobile scroll owner when the populated Overview charts render", async () => {
+    mockOverviewApi({ populated: true });
+    render(<CommandCenter />);
+
+    await screen.findByTestId("command-center-overview-charts");
+    expect(screen.getByTestId("command-center-overview-chart-tokens")).toBeTruthy();
+    assertScrollOwnerContract(screen.getByTestId("command-center-panel-overview"));
+  });
+
   it("keeps the same flex-fill scroll-owner contract outside the mobile breakpoint", () => {
     mockMobileMatchMedia(false);
     render(<CommandCenter />);

packages/dashboard/app/components/command-center/__tests__/CommandCenter.test.tsx

@@ -163,7 +163,9 @@ describe("CommandCenter shell", () => {
     render(<CommandCenter />);
     expect(screen.queryByTestId("command-center-empty")).toBeNull();
     expect(screen.getByTestId("command-center-overview-loading")).toBeTruthy();
+    expect(screen.queryByTestId("command-center-overview-charts")).toBeNull();
     await screen.findByTestId("command-center-empty");
+    expect(screen.queryByTestId("command-center-overview-charts")).toBeNull();
   });
 
   it("renders live Overview headline values when analytics data exists", async () => {
@@ -188,6 +190,12 @@ describe("CommandCenter shell", () => {
     expect(screen.getByTestId("command-center-throughput-trend")).toBeTruthy();
     expect(screen.getByRole("img", { name: "Recent activity throughput trend" })).toBeTruthy();
     expect(screen.getByTestId("command-center-throughput")).toBeTruthy();
+
+    const charts = screen.getByTestId("command-center-overview-charts");
+    expect(within(charts).getByText("Tokens by model")).toBeTruthy();
+    expect(within(screen.getByTestId("command-center-overview-chart-tokens")).getByText("gpt-4o")).toBeTruthy();
+    expect(within(screen.getByTestId("command-center-overview-chart-tools")).getByText("read")).toBeTruthy();
+    expect(screen.getByRole("img", { name: "Daily activity trend" })).toBeTruthy();
   });
 
   it("renders cards for partially populated analytics instead of the empty state", async () => {
@@ -198,6 +206,55 @@ describe("CommandCenter shell", () => {
     expect(screen.queryByTestId("command-center-empty")).toBeNull();
     expect(statValue("command-center-stat-tokens")).toBe("0");
     expect(statValue("command-center-stat-nodes")).toBe("1");
+    expect(screen.queryByTestId("command-center-overview-charts")).toBeNull();
+    expect(screen.queryByTestId("command-center-overview-loading")).toBeNull();
+    expect(screen.queryByTestId("command-center-overview-error")).toBeNull();
+  });
+
+  it("renders no empty chart shell when some populated sources have no chart rows", async () => {
+    mockOverviewApi({ tokens: tokenFixture(), tools: toolsFixture(0), activity: activityFixture(), signals: signalsFixture(0) });
+    render(<CommandCenter />);
+
+    await screen.findByTestId("command-center-overview-charts");
+    expect(screen.getByTestId("command-center-overview-chart-tokens")).toBeTruthy();
+    expect(screen.queryByTestId("command-center-overview-chart-tools")).toBeNull();
+    expect(screen.getByTestId("command-center-overview-chart-activity")).toBeTruthy();
+  });
+
+  it("handles empty, undefined, single-item, and zero chart data without NaN output", async () => {
+    const tokensWithSingleZeroGroup = {
+      ...tokenFixture(0),
+      groups: [
+        {
+          key: "idle-model",
+          inputTokens: 0,
+          outputTokens: 0,
+          cachedTokens: 0,
+          cacheWriteTokens: 0,
+          totalTokens: 0,
+          nTasks: 0,
+          cost: { usd: null, unavailable: true, stale: false },
+        },
+      ],
+    };
+    const toolsWithoutCategories = { ...toolsFixture(1), byCategory: undefined };
+    const activityWithSingleZeroDay = {
+      ...activityFixture({ sessions: 0, messages: 0, activeNodes: 1, activeAgents: 0, doneInRange: 0 }),
+      daily: [{ day: "2026-06-08", activeNodes: 0, activeAgents: 0, messages: 0 }],
+    };
+    mockOverviewApi({
+      tokens: tokensWithSingleZeroGroup,
+      tools: toolsWithoutCategories,
+      activity: activityWithSingleZeroDay,
+      signals: signalsFixture(0),
+    });
+    render(<CommandCenter />);
+
+    await screen.findByTestId("command-center-overview-charts");
+    expect(screen.getByTestId("command-center-overview-chart-tokens").textContent).toContain("idle-model");
+    expect(screen.queryByTestId("command-center-overview-chart-tools")).toBeNull();
+    expect(screen.getByTestId("command-center-overview-chart-activity")).toBeTruthy();
+    expect(screen.getByTestId("command-center-panel-overview").textContent).not.toContain("NaN");
   });
 
   it("keeps Overview populated when the signals endpoint is missing", async () => {
@@ -224,6 +281,7 @@ describe("CommandCenter shell", () => {
     expect(screen.getByTestId("command-center-overview-error").textContent).toContain("tokens failed");
     expect(screen.queryByTestId("command-center-overview-loading")).toBeNull();
     expect(screen.queryByTestId("command-center-empty")).toBeNull();
+    expect(screen.queryByTestId("command-center-overview-charts")).toBeNull();
   });
 
   it("re-fetches and re-derives the Overview empty state when the range changes", async () => {