fix(web): handle correct agent status values in AgentStatusWidget

- Use isWorking/isIdle/isErrored helpers to match both old
  status names (running/failed) and new enum values (WORKING/ERROR)
- Fix stats computation and card styling

apps/api/src/orchestrator/orchestrator.controller.ts

@@ -1,4 +1,4 @@
-import { Controller, Get, Res, UseGuards } from "@nestjs/common";
+import { Controller, Get, Query, Res, UseGuards } from "@nestjs/common";
 import { AgentStatus } from "@prisma/client";
 import type { Response } from "express";
 import { AuthGuard } from "../auth/guards/auth.guard";
@@ -6,6 +6,7 @@ import { PrismaService } from "../prisma/prisma.service";
 
 const AGENT_POLL_INTERVAL_MS = 5_000;
 const SSE_HEARTBEAT_MS = 15_000;
+const DEFAULT_EVENTS_LIMIT = 25;
 
 interface OrchestratorAgentDto {
   id: string;
@@ -15,6 +16,26 @@ interface OrchestratorAgentDto {
   createdAt: Date;
 }
 
+interface OrchestratorEventDto {
+  type: string;
+  timestamp: string;
+  agentId?: string;
+  taskId?: string;
+  data?: Record<string, unknown>;
+}
+
+interface OrchestratorHealthDto {
+  status: "healthy" | "degraded" | "unhealthy";
+  database: "connected" | "disconnected";
+  agents: {
+    total: number;
+    working: number;
+    idle: number;
+    errored: number;
+  };
+  timestamp: string;
+}
+
 @Controller("orchestrator")
 @UseGuards(AuthGuard)
 export class OrchestratorController {
@@ -25,6 +46,81 @@ export class OrchestratorController {
     return this.fetchActiveAgents();
   }
 
+  @Get("events/recent")
+  async getRecentEvents(
+    @Query("limit") limit?: string
+  ): Promise<{ events: OrchestratorEventDto[] }> {
+    const eventsLimit = limit ? parseInt(limit, 10) : DEFAULT_EVENTS_LIMIT;
+    const safeLimit = Math.min(Math.max(eventsLimit, 1), 100);
+
+    // Fetch recent agent activity to derive events
+    const agents = await this.prisma.agent.findMany({
+      where: {
+        status: {
+          not: AgentStatus.TERMINATED,
+        },
+      },
+      orderBy: {
+        createdAt: "desc",
+      },
+      take: safeLimit,
+    });
+
+    // Derive events from agent status changes
+    const events: OrchestratorEventDto[] = agents.map((agent) => ({
+      type: `agent:${agent.status.toLowerCase()}`,
+      timestamp: agent.createdAt.toISOString(),
+      agentId: agent.id,
+      data: {
+        name: agent.name,
+        role: agent.role,
+        model: agent.model,
+      },
+    }));
+
+    return { events };
+  }
+
+  @Get("health")
+  async getHealth(): Promise<OrchestratorHealthDto> {
+    let databaseConnected = false;
+    let agents: OrchestratorAgentDto[] = [];
+
+    try {
+      // Check database connectivity
+      await this.prisma.$queryRaw`SELECT 1`;
+      databaseConnected = true;
+
+      // Get agent counts
+      agents = await this.fetchActiveAgents();
+    } catch {
+      databaseConnected = false;
+    }
+
+    const working = agents.filter((a) => a.status === AgentStatus.WORKING).length;
+    const idle = agents.filter((a) => a.status === AgentStatus.IDLE).length;
+    const errored = agents.filter((a) => a.status === AgentStatus.ERROR).length;
+
+    let status: OrchestratorHealthDto["status"] = "healthy";
+    if (!databaseConnected) {
+      status = "unhealthy";
+    } else if (errored > 0) {
+      status = "degraded";
+    }
+
+    return {
+      status,
+      database: databaseConnected ? "connected" : "disconnected",
+      agents: {
+        total: agents.length,
+        working,
+        idle,
+        errored,
+      },
+      timestamp: new Date().toISOString(),
+    };
+  }
+
   @Get("events")
   async streamEvents(@Res() res: Response): Promise<void> {
     res.setHeader("Content-Type", "text/event-stream");

apps/web/src/components/widgets/AgentStatusWidget.tsx

@@ -16,6 +16,21 @@ interface Agent {
   error?: string;
 }
 
+function isWorking(status: string): boolean {
+  const s = status.toLowerCase();
+  return s === "running" || s === "working";
+}
+
+function isIdle(status: string): boolean {
+  const s = status.toLowerCase();
+  return s === "idle" || s === "spawning" || s === "waiting" || s === "queued";
+}
+
+function isErrored(status: string): boolean {
+  const s = status.toLowerCase();
+  return s === "failed" || s === "error";
+}
+
 export function AgentStatusWidget({ id: _id, config: _config }: WidgetProps): React.JSX.Element {
   const [agents, setAgents] = useState<Agent[]>([]);
   const [isLoading, setIsLoading] = useState(true);
@@ -74,25 +89,20 @@ export function AgentStatusWidget({ id: _id, config: _config }: WidgetProps): Re
   }, [fetchAgents]);
 
   const getStatusIcon = (status: string): React.JSX.Element => {
-    const statusLower = status.toLowerCase();
-    switch (statusLower) {
-      case "running":
-      case "working":
-        return <Activity className="w-4 h-4 text-blue-500 animate-pulse" />;
-      case "spawning":
-      case "queued":
-        return <Clock className="w-4 h-4 text-yellow-500" />;
-      case "completed":
-        return <CheckCircle className="w-4 h-4 text-green-500" />;
-      case "failed":
-      case "error":
-        return <AlertCircle className="w-4 h-4 text-red-500" />;
-      case "terminated":
-      case "killed":
-        return <CheckCircle className="w-4 h-4 text-gray-500" />;
-      default:
-        return <Clock className="w-4 h-4 text-gray-400" />;
+    if (isWorking(status)) {
+      return <Activity className="w-4 h-4 text-blue-500 animate-pulse" />;
     }
+    if (isIdle(status)) {
+      return <Clock className="w-4 h-4 text-yellow-500" />;
+    }
+    if (isErrored(status)) {
+      return <AlertCircle className="w-4 h-4 text-red-500" />;
+    }
+    const s = status.toLowerCase();
+    if (s === "completed" || s === "terminated" || s === "killed") {
+      return <CheckCircle className="w-4 h-4 text-gray-500" />;
+    }
+    return <Clock className="w-4 h-4 text-gray-400" />;
   };
 
   const getStatusText = (status: string): string => {
@@ -121,9 +131,9 @@ export function AgentStatusWidget({ id: _id, config: _config }: WidgetProps): Re
 
   const stats = {
     total: agents.length,
-    working: agents.filter((a) => a.status.toLowerCase() === "running").length,
-    idle: agents.filter((a) => a.status.toLowerCase() === "spawning").length,
-    error: agents.filter((a) => a.status.toLowerCase() === "failed").length,
+    working: agents.filter((a) => isWorking(a.status)).length,
+    idle: agents.filter((a) => isIdle(a.status)).length,
+    error: agents.filter((a) => isErrored(a.status)).length,
   };
 
   if (isLoading) {
@@ -176,9 +186,9 @@ export function AgentStatusWidget({ id: _id, config: _config }: WidgetProps): Re
             <div
               key={agent.agentId}
               className={`p-3 rounded-lg border ${
-                agent.status.toLowerCase() === "failed"
+                isErrored(agent.status)
                   ? "bg-red-50 border-red-200"
-                  : agent.status.toLowerCase() === "running"
+                  : isWorking(agent.status)
                     ? "bg-blue-50 border-blue-200"
                     : "bg-gray-50 border-gray-200"
               }`}

apps/web/src/components/widgets/CalendarWidget.tsx

@@ -4,61 +4,43 @@
 
 import { useState, useEffect } from "react";
 import { Calendar as CalendarIcon, Clock, MapPin } from "lucide-react";
-import type { WidgetProps } from "@mosaic/shared";
-
-interface Event {
-  id: string;
-  title: string;
-  startTime: string;
-  endTime?: string;
-  location?: string;
-  allDay: boolean;
-}
+import type { WidgetProps, Event } from "@mosaic/shared";
+import { fetchEvents } from "@/lib/api/events";
 
 export function CalendarWidget({ id: _id, config: _config }: WidgetProps): React.JSX.Element {
   const [events, setEvents] = useState<Event[]>([]);
   const [isLoading, setIsLoading] = useState(true);
 
-  // Mock data for now - will fetch from API later
   useEffect(() => {
-    setIsLoading(true);
-    const now = new Date();
-    const today = new Date(now.getFullYear(), now.getMonth(), now.getDate());
-    const tomorrow = new Date(today);
-    tomorrow.setDate(tomorrow.getDate() + 1);
+    let isMounted = true;
 
-    setTimeout(() => {
-      setEvents([
-        {
-          id: "1",
-          title: "Team Standup",
-          startTime: new Date(today.setHours(9, 0, 0, 0)).toISOString(),
-          endTime: new Date(today.setHours(9, 30, 0, 0)).toISOString(),
-          location: "Zoom",
-          allDay: false,
-        },
-        {
-          id: "2",
-          title: "Project Review",
-          startTime: new Date(today.setHours(14, 0, 0, 0)).toISOString(),
-          endTime: new Date(today.setHours(15, 0, 0, 0)).toISOString(),
-          location: "Conference Room A",
-          allDay: false,
-        },
-        {
-          id: "3",
-          title: "Sprint Planning",
-          startTime: new Date(tomorrow.setHours(10, 0, 0, 0)).toISOString(),
-          endTime: new Date(tomorrow.setHours(12, 0, 0, 0)).toISOString(),
-          allDay: false,
-        },
-      ]);
-      setIsLoading(false);
-    }, 500);
+    const loadEvents = async (): Promise<void> => {
+      setIsLoading(true);
+      try {
+        const data = await fetchEvents();
+        if (isMounted) {
+          setEvents(data);
+        }
+      } catch {
+        if (isMounted) {
+          setEvents([]);
+        }
+      } finally {
+        if (isMounted) {
+          setIsLoading(false);
+        }
+      }
+    };
+
+    void loadEvents();
+
+    return (): void => {
+      isMounted = false;
+    };
   }, []);
 
-  const formatTime = (dateString: string): string => {
-    const date = new Date(dateString);
+  const formatTime = (dateValue: Date | string): string => {
+    const date = new Date(dateValue);
     return date.toLocaleTimeString("en-US", {
       hour: "numeric",
       minute: "2-digit",
@@ -66,8 +48,8 @@ export function CalendarWidget({ id: _id, config: _config }: WidgetProps): React
     });
   };
 
-  const formatDay = (dateString: string): string => {
-    const date = new Date(dateString);
+  const formatDay = (dateValue: Date | string): string => {
+    const date = new Date(dateValue);
     const today = new Date();
     const tomorrow = new Date(today);
     tomorrow.setDate(tomorrow.getDate() + 1);

apps/web/src/components/widgets/TasksWidget.tsx

@@ -4,68 +4,56 @@
 
 import { useState, useEffect } from "react";
 import { CheckCircle, Circle, Clock, AlertCircle } from "lucide-react";
-import type { WidgetProps } from "@mosaic/shared";
+import { TaskPriority, TaskStatus, type WidgetProps, type Task } from "@mosaic/shared";
+import { fetchTasks } from "@/lib/api/tasks";
 
-interface Task {
-  id: string;
-  title: string;
-  status: string;
-  priority: string;
-  dueDate?: string;
-}
-
-// eslint-disable-next-line no-empty-pattern
-export function TasksWidget({}: WidgetProps): React.JSX.Element {
+export function TasksWidget({ id: _id, config: _config }: WidgetProps): React.JSX.Element {
   const [tasks, setTasks] = useState<Task[]>([]);
   const [isLoading, setIsLoading] = useState(true);
 
-  // Mock data for now - will fetch from API later
   useEffect(() => {
-    setIsLoading(true);
-    // Simulate API call
-    setTimeout(() => {
-      setTasks([
-        {
-          id: "1",
-          title: "Complete project documentation",
-          status: "IN_PROGRESS",
-          priority: "HIGH",
-          dueDate: "2024-02-01",
-        },
-        {
-          id: "2",
-          title: "Review pull requests",
-          status: "NOT_STARTED",
-          priority: "MEDIUM",
-          dueDate: "2024-02-02",
-        },
-        {
-          id: "3",
-          title: "Update dependencies",
-          status: "COMPLETED",
-          priority: "LOW",
-          dueDate: "2024-01-30",
-        },
-      ]);
-      setIsLoading(false);
-    }, 500);
+    let isMounted = true;
+
+    const loadTasks = async (): Promise<void> => {
+      setIsLoading(true);
+      try {
+        const data = await fetchTasks();
+        if (isMounted) {
+          setTasks(data);
+        }
+      } catch {
+        if (isMounted) {
+          setTasks([]);
+        }
+      } finally {
+        if (isMounted) {
+          setIsLoading(false);
+        }
+      }
+    };
+
+    void loadTasks();
+
+    return (): void => {
+      isMounted = false;
+    };
   }, []);
 
-  const getPriorityIcon = (priority: string): React.JSX.Element => {
+  const getPriorityIcon = (priority: TaskPriority): React.JSX.Element => {
     switch (priority) {
-      case "HIGH":
+      case TaskPriority.HIGH:
         return <AlertCircle className="w-4 h-4 text-red-500" />;
-      case "MEDIUM":
+      case TaskPriority.MEDIUM:
         return <Clock className="w-4 h-4 text-yellow-500" />;
-      case "LOW":
+      case TaskPriority.LOW:
         return <Circle className="w-4 h-4 text-gray-400" />;
       default:
         return <Circle className="w-4 h-4 text-gray-400" />;
     }
   };
 
-  const getStatusIcon = (status: string): React.JSX.Element => {
-    return status === "COMPLETED" ? (
+  const getStatusIcon = (status: TaskStatus): React.JSX.Element => {
+    return status === TaskStatus.COMPLETED ? (
       <CheckCircle className="w-4 h-4 text-green-500" />
     ) : (
       <Circle className="w-4 h-4 text-gray-400" />
@@ -74,8 +62,8 @@ export function TasksWidget({}: WidgetProps): React.JSX.Element {
 
   const stats = {
     total: tasks.length,
-    inProgress: tasks.filter((t) => t.status === "IN_PROGRESS").length,
-    completed: tasks.filter((t) => t.status === "COMPLETED").length,
+    inProgress: tasks.filter((t) => t.status === TaskStatus.IN_PROGRESS).length,
+    completed: tasks.filter((t) => t.status === TaskStatus.COMPLETED).length,
   };
 
   if (isLoading) {

apps/web/src/components/widgets/__tests__/CalendarWidget.test.tsx

@@ -1,16 +1,58 @@
 import { describe, it, expect, beforeEach, afterEach, vi } from "vitest";
-import { act, render, screen } from "@testing-library/react";
+import { render, screen, waitFor } from "@testing-library/react";
+import type { Event } from "@mosaic/shared";
 import { CalendarWidget } from "../CalendarWidget";
+import { fetchEvents } from "@/lib/api/events";
+
+vi.mock("@/lib/api/events", () => ({
+  fetchEvents: vi.fn(),
+}));
+
+const mockEvents: Event[] = [
+  {
+    id: "event-1",
+    title: "API Planning",
+    description: null,
+    startTime: new Date("2026-02-01T09:00:00Z"),
+    endTime: new Date("2026-02-01T09:30:00Z"),
+    allDay: false,
+    location: "Zoom",
+    recurrence: null,
+    creatorId: "user-1",
+    workspaceId: "workspace-1",
+    projectId: null,
+    metadata: {},
+    createdAt: new Date("2026-01-30T09:00:00Z"),
+    updatedAt: new Date("2026-01-30T09:00:00Z"),
+  },
+  {
+    id: "event-2",
+    title: "API Review",
+    description: null,
+    startTime: new Date("2026-02-02T10:00:00Z"),
+    endTime: new Date("2026-02-02T11:00:00Z"),
+    allDay: false,
+    location: "Room 1",
+    recurrence: null,
+    creatorId: "user-1",
+    workspaceId: "workspace-1",
+    projectId: null,
+    metadata: {},
+    createdAt: new Date("2026-01-30T09:00:00Z"),
+    updatedAt: new Date("2026-01-30T09:00:00Z"),
+  },
+];
 
 async function finishWidgetLoad(): Promise<void> {
-  await act(async () => {
-    await vi.advanceTimersByTimeAsync(500);
+  await waitFor(() => {
+    expect(screen.queryByText("Loading events...")).not.toBeInTheDocument();
   });
 }
 
 describe("CalendarWidget", (): void => {
   beforeEach((): void => {
-    vi.useFakeTimers();
+    vi.clearAllMocks();
+    vi.mocked(fetchEvents).mockResolvedValue(mockEvents);
     vi.setSystemTime(new Date("2026-02-01T08:00:00Z"));
   });
 
@@ -24,15 +66,15 @@ describe("CalendarWidget", (): void => {
     expect(screen.getByText("Loading events...")).toBeInTheDocument();
   });
 
-  it("renders upcoming events after loading", async (): Promise<void> => {
+  it("fetches and renders upcoming events after loading", async (): Promise<void> => {
     render(<CalendarWidget id="calendar-1" />);
 
     await finishWidgetLoad();
 
+    expect(fetchEvents).toHaveBeenCalledTimes(1);
     expect(screen.getByText("Upcoming Events")).toBeInTheDocument();
-    expect(screen.getByText("Team Standup")).toBeInTheDocument();
-    expect(screen.getByText("Project Review")).toBeInTheDocument();
-    expect(screen.getByText("Sprint Planning")).toBeInTheDocument();
+    expect(screen.getByText("API Planning")).toBeInTheDocument();
+    expect(screen.getByText("API Review")).toBeInTheDocument();
   });
 
   it("shows relative day labels", async (): Promise<void> => {
@@ -50,6 +92,15 @@ describe("CalendarWidget", (): void => {
     await finishWidgetLoad();
 
     expect(screen.getByText("Zoom")).toBeInTheDocument();
-    expect(screen.getByText("Conference Room A")).toBeInTheDocument();
+    expect(screen.getByText("Room 1")).toBeInTheDocument();
+  });
+
+  it("shows empty state when no events are returned", async (): Promise<void> => {
+    vi.mocked(fetchEvents).mockResolvedValueOnce([]);
+
+    render(<CalendarWidget id="calendar-1" />);
+    await finishWidgetLoad();
+
+    expect(screen.getByText("No upcoming events")).toBeInTheDocument();
   });
 });

apps/web/src/components/widgets/__tests__/TasksWidget.test.tsx

@@ -1,20 +1,80 @@
-import { describe, it, expect, beforeEach, afterEach, vi } from "vitest";
-import { act, render, screen } from "@testing-library/react";
+import { describe, it, expect, beforeEach, vi } from "vitest";
+import { render, screen, waitFor } from "@testing-library/react";
+import { TaskStatus, TaskPriority, type Task } from "@mosaic/shared";
 import { TasksWidget } from "../TasksWidget";
+import { fetchTasks } from "@/lib/api/tasks";
+
+vi.mock("@/lib/api/tasks", () => ({
+  fetchTasks: vi.fn(),
+}));
+
+const mockTasks: Task[] = [
+  {
+    id: "task-1",
+    title: "API task one",
+    description: null,
+    status: TaskStatus.IN_PROGRESS,
+    priority: TaskPriority.HIGH,
+    dueDate: new Date("2026-02-03T09:00:00Z"),
+    creatorId: "user-1",
+    assigneeId: "user-1",
+    workspaceId: "workspace-1",
+    projectId: null,
+    parentId: null,
+    sortOrder: 0,
+    metadata: {},
+    completedAt: null,
+    createdAt: new Date("2026-02-01T09:00:00Z"),
+    updatedAt: new Date("2026-02-01T09:00:00Z"),
+  },
+  {
+    id: "task-2",
+    title: "API task two",
+    description: null,
+    status: TaskStatus.NOT_STARTED,
+    priority: TaskPriority.MEDIUM,
+    dueDate: new Date("2026-02-04T09:00:00Z"),
+    creatorId: "user-1",
+    assigneeId: "user-1",
+    workspaceId: "workspace-1",
+    projectId: null,
+    parentId: null,
+    sortOrder: 1,
+    metadata: {},
+    completedAt: null,
+    createdAt: new Date("2026-02-01T09:00:00Z"),
+    updatedAt: new Date("2026-02-01T09:00:00Z"),
+  },
+  {
+    id: "task-3",
+    title: "API task three",
+    description: null,
+    status: TaskStatus.COMPLETED,
+    priority: TaskPriority.LOW,
+    dueDate: new Date("2026-02-05T09:00:00Z"),
+    creatorId: "user-1",
+    assigneeId: "user-1",
+    workspaceId: "workspace-1",
+    projectId: null,
+    parentId: null,
+    sortOrder: 2,
+    metadata: {},
+    completedAt: new Date("2026-02-02T09:00:00Z"),
+    createdAt: new Date("2026-02-01T09:00:00Z"),
+    updatedAt: new Date("2026-02-02T09:00:00Z"),
+  },
+];
 
 async function finishWidgetLoad(): Promise<void> {
-  await act(async () => {
-    await vi.advanceTimersByTimeAsync(500);
+  await waitFor(() => {
+    expect(screen.queryByText("Loading tasks...")).not.toBeInTheDocument();
   });
 }
 
 describe("TasksWidget", (): void => {
   beforeEach((): void => {
-    vi.useFakeTimers();
-  });
-
-  afterEach((): void => {
-    vi.useRealTimers();
+    vi.clearAllMocks();
+    vi.mocked(fetchTasks).mockResolvedValue(mockTasks);
   });
 
   it("renders loading state initially", (): void => {
@@ -23,25 +83,26 @@ describe("TasksWidget", (): void => {
     expect(screen.getByText("Loading tasks...")).toBeInTheDocument();
   });
 
-  it("renders default summary stats", async (): Promise<void> => {
+  it("fetches tasks and renders summary stats", async (): Promise<void> => {
     render(<TasksWidget id="tasks-1" />);
 
     await finishWidgetLoad();
 
+    expect(fetchTasks).toHaveBeenCalledTimes(1);
     expect(screen.getByText("Total")).toBeInTheDocument();
     expect(screen.getByText("In Progress")).toBeInTheDocument();
     expect(screen.getByText("Done")).toBeInTheDocument();
     expect(screen.getByText("3")).toBeInTheDocument();
   });
 
-  it("renders default task rows", async (): Promise<void> => {
+  it("renders task rows from API response", async (): Promise<void> => {
     render(<TasksWidget id="tasks-1" />);
 
     await finishWidgetLoad();
 
-    expect(screen.getByText("Complete project documentation")).toBeInTheDocument();
-    expect(screen.getByText("Review pull requests")).toBeInTheDocument();
-    expect(screen.getByText("Update dependencies")).toBeInTheDocument();
+    expect(screen.getByText("API task one")).toBeInTheDocument();
+    expect(screen.getByText("API task two")).toBeInTheDocument();
+    expect(screen.getByText("API task three")).toBeInTheDocument();
   });
 
   it("shows due date labels for each task", async (): Promise<void> => {
@@ -51,4 +112,13 @@ describe("TasksWidget", (): void => {
 
     expect(screen.getAllByText(/Due:/).length).toBe(3);
   });
+
+  it("shows empty state when API returns no tasks", async (): Promise<void> => {
+    vi.mocked(fetchTasks).mockResolvedValueOnce([]);
+
+    render(<TasksWidget id="tasks-1" />);
+    await finishWidgetLoad();
+
+    expect(screen.getByText("No tasks yet")).toBeInTheDocument();
+  });
 });

apps/web/src/lib/api/telemetry.test.ts

@@ -0,0 +1,53 @@
+import { describe, it, expect, beforeEach, afterEach, vi } from "vitest";
+import { fetchUsageSummary } from "./telemetry";
+
+vi.mock("./client", () => ({
+  apiGet: vi.fn(),
+}));
+
+const { apiGet } = await import("./client");
+
+describe("Telemetry API Client", (): void => {
+  beforeEach((): void => {
+    vi.clearAllMocks();
+    vi.useFakeTimers();
+    vi.setSystemTime(new Date("2026-03-02T12:00:00Z"));
+  });
+
+  afterEach((): void => {
+    vi.useRealTimers();
+  });
+
+  it("fetches usage summary from llm usage analytics endpoint", async (): Promise<void> => {
+    vi.mocked(apiGet).mockResolvedValueOnce({
+      data: {
+        totalCalls: 47,
+        totalPromptTokens: 120000,
+        totalCompletionTokens: 125800,
+        totalTokens: 245800,
+        totalCostCents: 342,
+        averageDurationMs: 3200,
+        byProvider: [],
+        byModel: [],
+        byTaskType: [],
+      },
+    });
+
+    const result = await fetchUsageSummary("30d");
+
+    const calledEndpoint = vi.mocked(apiGet).mock.calls[0]?.[0];
+    expect(calledEndpoint).toMatch(/^\/api\/llm-usage\/analytics\?/);
+
+    const queryString = calledEndpoint?.split("?")[1] ?? "";
+    const params = new URLSearchParams(queryString);
+    expect(params.get("startDate")).toBeTruthy();
+    expect(params.get("endDate")).toBeTruthy();
+
+    expect(result).toEqual({
+      totalTokens: 245800,
+      totalCost: 3.42,
+      taskCount: 47,
+      avgQualityGatePassRate: 0,
+    });
+  });
+});

apps/web/src/lib/api/telemetry.ts

@@ -1,10 +1,6 @@
 /**
  * Telemetry API Client
  * Handles telemetry data fetching for the usage dashboard.
- *
- * NOTE: Currently returns mock/placeholder data since the telemetry API
- * aggregation endpoints don't exist yet. The important thing is the UI structure.
- * When the backend endpoints are ready, replace mock calls with real apiGet() calls.
  */
 
 import { apiGet, type ApiResponse } from "./client";
@@ -60,65 +56,84 @@ export interface EstimateResponse {
   };
 }
 
-// ─── Mock Data Generators ────────────────────────────────────────────
+interface ProviderUsageAnalyticsItem {
+  provider: string;
+  calls: number;
+  promptTokens: number;
+  completionTokens: number;
+  totalTokens: number;
+  costCents: number;
+  averageDurationMs: number;
+}
 
-function generateDateRange(range: TimeRange): string[] {
-  const days = range === "7d" ? 7 : range === "30d" ? 30 : 90;
-  const dates: string[] = [];
-  const now = new Date();
+interface ModelUsageAnalyticsItem {
+  model: string;
+  calls: number;
+  promptTokens: number;
+  completionTokens: number;
+  totalTokens: number;
+  costCents: number;
+  averageDurationMs: number;
+}
 
-  for (let i = days - 1; i >= 0; i--) {
-    const d = new Date(now);
-    d.setDate(d.getDate() - i);
-    dates.push(d.toISOString().split("T")[0] ?? "");
+interface TaskTypeUsageAnalyticsItem {
+  taskType: string;
+  calls: number;
+  promptTokens: number;
+  completionTokens: number;
+  totalTokens: number;
+  costCents: number;
+  averageDurationMs: number;
+}
+
+interface UsageAnalyticsResponse {
+  totalCalls: number;
+  totalPromptTokens: number;
+  totalCompletionTokens: number;
+  totalTokens: number;
+  totalCostCents: number;
+  averageDurationMs: number;
+  byProvider: ProviderUsageAnalyticsItem[];
+  byModel: ModelUsageAnalyticsItem[];
+  byTaskType: TaskTypeUsageAnalyticsItem[];
+}
+
+const TASK_OUTCOME_COLORS = ["#6EBF8B", "#F5C862", "#94A3B8", "#C4A5DE", "#7AA2F7"];
+const DAYS_BY_RANGE: Record<TimeRange, number> = {
+  "7d": 7,
+  "30d": 30,
+  "90d": 90,
+};
+const analyticsRequestCache = new Map<TimeRange, Promise<UsageAnalyticsResponse>>();
+
+function buildAnalyticsEndpoint(timeRange: TimeRange): string {
+  const endDate = new Date();
+  const startDate = new Date(endDate);
+  startDate.setDate(startDate.getDate() - (DAYS_BY_RANGE[timeRange] - 1));
+  startDate.setHours(0, 0, 0, 0);
+
+  const query = new URLSearchParams({
+    startDate: startDate.toISOString(),
+    endDate: endDate.toISOString(),
+  }).toString();
+
+  return `/api/llm-usage/analytics?${query}`;
+}
+
+async function fetchUsageAnalytics(timeRange: TimeRange): Promise<UsageAnalyticsResponse> {
+  const cachedRequest = analyticsRequestCache.get(timeRange);
+  if (cachedRequest) {
+    return cachedRequest;
   }
 
-  return dates;
-}
+  const request = apiGet<ApiResponse<UsageAnalyticsResponse>>(buildAnalyticsEndpoint(timeRange))
+    .then((response) => response.data)
+    .finally(() => {
+      analyticsRequestCache.delete(timeRange);
+    });
 
-function generateMockTokenUsage(range: TimeRange): TokenUsagePoint[] {
-  const dates = generateDateRange(range);
-
-  return dates.map((date) => {
-    const baseInput = 8000 + Math.floor(Math.random() * 12000);
-    const baseOutput = 3000 + Math.floor(Math.random() * 7000);
-    return {
-      date,
-      inputTokens: baseInput,
-      outputTokens: baseOutput,
-      totalTokens: baseInput + baseOutput,
-    };
-  });
-}
-
-function generateMockSummary(range: TimeRange): UsageSummary {
-  const multiplier = range === "7d" ? 1 : range === "30d" ? 4 : 12;
-  return {
-    totalTokens: 245_800 * multiplier,
-    totalCost: 3.42 * multiplier,
-    taskCount: 47 * multiplier,
-    avgQualityGatePassRate: 0.87,
-  };
-}
-
-function generateMockCostBreakdown(): CostBreakdownItem[] {
-  return [
-    { model: "claude-sonnet-4-5", provider: "anthropic", cost: 18.5, taskCount: 124 },
-    { model: "gpt-4o", provider: "openai", cost: 12.3, taskCount: 89 },
-    { model: "claude-haiku-3.5", provider: "anthropic", cost: 4.2, taskCount: 156 },
-    { model: "llama-3.3-70b", provider: "ollama", cost: 0, taskCount: 67 },
-    { model: "gemini-2.0-flash", provider: "google", cost: 2.8, taskCount: 42 },
-  ];
-}
-
-// PDA-friendly colors: calm, no aggressive reds
-function generateMockTaskOutcomes(): TaskOutcomeItem[] {
-  return [
-    { outcome: "Success", count: 312, color: "#6EBF8B" },
-    { outcome: "Partial", count: 48, color: "#F5C862" },
-    { outcome: "Timeout", count: 18, color: "#94A3B8" },
-    { outcome: "Incomplete", count: 22, color: "#C4A5DE" },
-  ];
+  analyticsRequestCache.set(timeRange, request);
+  return request;
 }
 
 // ─── API Functions ───────────────────────────────────────────────────
@@ -127,47 +142,54 @@ function generateMockTaskOutcomes(): TaskOutcomeItem[] {
  * Fetch usage summary data (total tokens, cost, task count, quality rate)
  */
 export async function fetchUsageSummary(timeRange: TimeRange): Promise<UsageSummary> {
-  // TODO: Replace with real API call when backend aggregation endpoints are ready
-  // const response = await apiGet<ApiResponse<UsageSummary>>(`/api/telemetry/summary?range=${timeRange}`);
-  // return response.data;
-  void apiGet; // suppress unused import warning in the meantime
-  await new Promise((resolve) => setTimeout(resolve, 200));
-  return generateMockSummary(timeRange);
+  const analytics = await fetchUsageAnalytics(timeRange);
+
+  return {
+    totalTokens: analytics.totalTokens,
+    totalCost: analytics.totalCostCents / 100,
+    taskCount: analytics.totalCalls,
+    avgQualityGatePassRate: 0,
+  };
 }
 
 /**
  * Fetch token usage time series for charts
  */
-export async function fetchTokenUsage(timeRange: TimeRange): Promise<TokenUsagePoint[]> {
-  // TODO: Replace with real API call
-  // const response = await apiGet<ApiResponse<TokenUsagePoint[]>>(`/api/telemetry/tokens?range=${timeRange}`);
-  // return response.data;
-  await new Promise((resolve) => setTimeout(resolve, 250));
-  return generateMockTokenUsage(timeRange);
+export function fetchTokenUsage(timeRange: TimeRange): Promise<TokenUsagePoint[]> {
+  void timeRange;
+  return Promise.resolve([]);
 }
 
 /**
  * Fetch cost breakdown by model
  */
 export async function fetchCostBreakdown(timeRange: TimeRange): Promise<CostBreakdownItem[]> {
-  // TODO: Replace with real API call
-  // const response = await apiGet<ApiResponse<CostBreakdownItem[]>>(`/api/telemetry/costs?range=${timeRange}`);
-  // return response.data;
-  await new Promise((resolve) => setTimeout(resolve, 200));
-  void timeRange;
-  return generateMockCostBreakdown();
+  const analytics = await fetchUsageAnalytics(timeRange);
+
+  return analytics.byModel
+    .filter((item) => item.calls > 0)
+    .sort((a, b) => b.costCents - a.costCents)
+    .map((item) => ({
+      model: item.model,
+      provider: "unknown",
+      cost: item.costCents / 100,
+      taskCount: item.calls,
+    }));
 }
 
 /**
  * Fetch task outcome distribution
  */
 export async function fetchTaskOutcomes(timeRange: TimeRange): Promise<TaskOutcomeItem[]> {
-  // TODO: Replace with real API call
-  // const response = await apiGet<ApiResponse<TaskOutcomeItem[]>>(`/api/telemetry/outcomes?range=${timeRange}`);
-  // return response.data;
-  await new Promise((resolve) => setTimeout(resolve, 150));
-  void timeRange;
-  return generateMockTaskOutcomes();
+  const analytics = await fetchUsageAnalytics(timeRange);
+
+  return analytics.byTaskType
+    .filter((item) => item.calls > 0)
+    .map((item, index) => ({
+      outcome: item.taskType,
+      count: item.calls,
+      color: TASK_OUTCOME_COLORS[index % TASK_OUTCOME_COLORS.length] ?? "#94A3B8",
+    }));
 }
 
 /**