fix(web): remove mock data from dashboard telemetry/tasks/calendar (#656)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

.npmrc

@@ -1 +1,3 @@
 @mosaicstack:registry=https://git.mosaicstack.dev/api/packages/mosaic/npm/
+supportedArchitectures[libc][]=glibc
+supportedArchitectures[cpu][]=x64

.woodpecker/base-image.yml

@@ -0,0 +1,27 @@
+when:
+  - event: manual
+  - event: cron
+    cron: weekly-base-image
+
+variables:
+  - &kaniko_setup |
+    mkdir -p /kaniko/.docker
+    echo "{\"auths\":{\"git.mosaicstack.dev\":{\"username\":\"$GITEA_USER\",\"password\":\"$GITEA_TOKEN\"}}}" > /kaniko/.docker/config.json
+
+steps:
+  build-base:
+    image: gcr.io/kaniko-project/executor:debug
+    environment:
+      GITEA_USER:
+        from_secret: gitea_username
+      GITEA_TOKEN:
+        from_secret: gitea_token
+    commands:
+      - *kaniko_setup
+      - /kaniko/executor
+          --context .
+          --dockerfile docker/base.Dockerfile
+          --destination git.mosaicstack.dev/mosaic/node-base:24-slim
+          --destination git.mosaicstack.dev/mosaic/node-base:latest
+          --cache=true
+          --cache-repo git.mosaicstack.dev/mosaic/node-base/cache

.woodpecker/ci.yml

@@ -29,9 +29,11 @@ when:
         - ".trivyignore"
 
 variables:
-  - &node_image "node:24-alpine"
+  - &node_image "node:24-slim"
   - &install_deps |
     corepack enable
+    apt-get update && apt-get install -y --no-install-recommends python3 make g++
+    pnpm config set store-dir /root/.local/share/pnpm/store
     pnpm install --frozen-lockfile
   - &use_deps |
     corepack enable
@@ -168,7 +170,7 @@ steps:
         elif [ "$CI_COMMIT_BRANCH" = "main" ]; then
           DESTINATIONS="--destination git.mosaicstack.dev/mosaic/stack-api:latest"
         fi
-        /kaniko/executor --context . --dockerfile apps/api/Dockerfile --snapshot-mode=redo $DESTINATIONS
+        /kaniko/executor --context . --dockerfile apps/api/Dockerfile --snapshot-mode=redo --cache=true --cache-repo git.mosaicstack.dev/mosaic/stack-api/cache $DESTINATIONS
     when:
       - branch: [main]
         event: [push, manual, tag]
@@ -193,7 +195,7 @@ steps:
         elif [ "$CI_COMMIT_BRANCH" = "main" ]; then
           DESTINATIONS="--destination git.mosaicstack.dev/mosaic/stack-orchestrator:latest"
         fi
-        /kaniko/executor --context . --dockerfile apps/orchestrator/Dockerfile --snapshot-mode=redo $DESTINATIONS
+        /kaniko/executor --context . --dockerfile apps/orchestrator/Dockerfile --snapshot-mode=redo --cache=true --cache-repo git.mosaicstack.dev/mosaic/stack-orchestrator/cache $DESTINATIONS
     when:
       - branch: [main]
         event: [push, manual, tag]
@@ -218,7 +220,7 @@ steps:
         elif [ "$CI_COMMIT_BRANCH" = "main" ]; then
           DESTINATIONS="--destination git.mosaicstack.dev/mosaic/stack-web:latest"
         fi
-        /kaniko/executor --context . --dockerfile apps/web/Dockerfile --snapshot-mode=redo --build-arg NEXT_PUBLIC_API_URL=https://api.mosaicstack.dev $DESTINATIONS
+        /kaniko/executor --context . --dockerfile apps/web/Dockerfile --snapshot-mode=redo --cache=true --cache-repo git.mosaicstack.dev/mosaic/stack-web/cache --build-arg NEXT_PUBLIC_API_URL=https://api.mosaicstack.dev $DESTINATIONS
     when:
       - branch: [main]
         event: [push, manual, tag]

apps/api/Dockerfile

@@ -1,7 +1,7 @@
 # Base image for all stages
 # Uses Debian slim (glibc) instead of Alpine (musl) because native Node.js addons
 # (matrix-sdk-crypto-nodejs, Prisma engines) require glibc-compatible binaries.
-FROM node:24-slim AS base
+FROM git.mosaicstack.dev/mosaic/node-base:24-slim AS base
 
 # Install pnpm globally
 RUN corepack enable && corepack prepare pnpm@10.27.0 --activate
@@ -19,9 +19,9 @@ COPY turbo.json ./
 FROM base AS deps
 
 # Install build tools for native addons (node-pty requires node-gyp compilation)
-# and OpenSSL for Prisma engine detection
+# Note: openssl and ca-certificates pre-installed in base image
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    python3 make g++ openssl \
+    python3 make g++ \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy all package.json files for workspace resolution
@@ -30,6 +30,9 @@ COPY packages/ui/package.json ./packages/ui/
 COPY packages/config/package.json ./packages/config/
 COPY apps/api/package.json ./apps/api/
 
+# Copy npm configuration for native binary architecture hints
+COPY .npmrc ./
+
 # Install dependencies (no cache mount — Kaniko builds are ephemeral in CI)
 # Then explicitly rebuild node-pty from source since pnpm may skip postinstall
 # scripts or fail to find prebuilt binaries for this Node.js version
@@ -61,19 +64,14 @@ RUN pnpm turbo build --filter=@mosaic/api --force
 # ======================
 # Production stage
 # ======================
-FROM node:24-slim AS production
+FROM git.mosaicstack.dev/mosaic/node-base:24-slim AS production
 
-# Install dumb-init for proper signal handling (static binary from GitHub,
+# dumb-init, openssl, ca-certificates pre-installed in base image
-# avoids apt-get which fails under Kaniko with bookworm GPG signature errors)
-ADD https://github.com/Yelp/dumb-init/releases/download/v1.2.5/dumb-init_1.2.5_x86_64 /usr/local/bin/dumb-init
 
 # Single RUN to minimize Kaniko filesystem snapshots (each RUN = full snapshot)
-# - openssl: Prisma engine detection requires libssl
+# - Remove npm/npx to reduce image size (not used in production)
-# - No build tools needed here — native addons are compiled in the deps stage
+# - Create non-root user
-RUN apt-get update && apt-get install -y --no-install-recommends openssl \
+RUN rm -rf /usr/local/lib/node_modules/npm /usr/local/bin/npm /usr/local/bin/npx \
-    && rm -rf /var/lib/apt/lists/* \
-    && rm -rf /usr/local/lib/node_modules/npm /usr/local/bin/npm /usr/local/bin/npx \
-    && chmod 755 /usr/local/bin/dumb-init \
     && groupadd -g 1001 nodejs && useradd -m -u 1001 -g nodejs nestjs
 
 WORKDIR /app

apps/api/src/activity/interceptors/activity-logging.interceptor.spec.ts

@@ -384,10 +384,18 @@ describe("ActivityLoggingInterceptor", () => {
       const context = createMockExecutionContext("POST", {}, body, user);
       const next = createMockCallHandler(result);
 
+      mockActivityService.logActivity.mockResolvedValue({
+        id: "activity-123",
+      });
+
       await new Promise<void>((resolve) => {
         interceptor.intercept(context, next).subscribe(() => {
-          // Should not call logActivity when workspaceId is missing
+          // workspaceId is now optional, so logActivity should be called without it
-          expect(mockActivityService.logActivity).not.toHaveBeenCalled();
+          expect(mockActivityService.logActivity).toHaveBeenCalled();
+          const callArgs = mockActivityService.logActivity.mock.calls[0][0];
+          expect(callArgs.userId).toBe("user-123");
+          expect(callArgs.entityId).toBe("task-123");
+          expect(callArgs.workspaceId).toBeUndefined();
           resolve();
         });
       });
@@ -412,10 +420,18 @@ describe("ActivityLoggingInterceptor", () => {
       const context = createMockExecutionContext("POST", {}, body, user);
       const next = createMockCallHandler(result);
 
+      mockActivityService.logActivity.mockResolvedValue({
+        id: "activity-123",
+      });
+
       await new Promise<void>((resolve) => {
         interceptor.intercept(context, next).subscribe(() => {
-          // Should not call logActivity when workspaceId is missing
+          // workspaceId is now optional, so logActivity should be called without it
-          expect(mockActivityService.logActivity).not.toHaveBeenCalled();
+          expect(mockActivityService.logActivity).toHaveBeenCalled();
+          const callArgs = mockActivityService.logActivity.mock.calls[0][0];
+          expect(callArgs.userId).toBe("user-123");
+          expect(callArgs.entityId).toBe("task-123");
+          expect(callArgs.workspaceId).toBeUndefined();
           resolve();
         });
       });

apps/orchestrator/Dockerfile

@@ -1,6 +1,6 @@
 # Base image for all stages
 # Uses Debian slim (glibc) instead of Alpine (musl) for native addon compatibility.
-FROM node:24-slim AS base
+FROM git.mosaicstack.dev/mosaic/node-base:24-slim AS base
 
 # Install pnpm globally
 RUN corepack enable && corepack prepare pnpm@10.27.0 --activate
@@ -22,6 +22,9 @@ COPY packages/shared/package.json ./packages/shared/
 COPY packages/config/package.json ./packages/config/
 COPY apps/orchestrator/package.json ./apps/orchestrator/
 
+# Copy npm configuration for native binary architecture hints
+COPY .npmrc ./
+
 # Install ALL dependencies (not just production)
 # No cache mount — Kaniko builds are ephemeral in CI
 RUN pnpm install --frozen-lockfile
@@ -54,7 +57,7 @@ RUN find ./apps/orchestrator/dist \( -name '*.spec.js' -o -name '*.spec.js.map'
 # ======================
 # Production stage
 # ======================
-FROM node:24-slim AS production
+FROM git.mosaicstack.dev/mosaic/node-base:24-slim AS production
 
 # Add metadata labels
 LABEL maintainer="mosaic-team@mosaicstack.dev"
@@ -65,13 +68,12 @@ LABEL org.opencontainers.image.vendor="Mosaic Stack"
 LABEL org.opencontainers.image.title="Mosaic Orchestrator"
 LABEL org.opencontainers.image.description="Agent orchestration service for Mosaic Stack"
 
-# Install dumb-init for proper signal handling (static binary from GitHub,
+# dumb-init, ca-certificates pre-installed in base image
-# avoids apt-get which fails under Kaniko with bookworm GPG signature errors)
-ADD https://github.com/Yelp/dumb-init/releases/download/v1.2.5/dumb-init_1.2.5_x86_64 /usr/local/bin/dumb-init
 
 # Single RUN to minimize Kaniko filesystem snapshots (each RUN = full snapshot)
+# - Remove npm/npx to reduce image size (not used in production)
+# - Create non-root user
 RUN rm -rf /usr/local/lib/node_modules/npm /usr/local/bin/npm /usr/local/bin/npx \
-    && chmod 755 /usr/local/bin/dumb-init \
     && groupadd -g 1001 nodejs && useradd -m -u 1001 -g nodejs nestjs
 
 WORKDIR /app

apps/web/Dockerfile

@@ -1,7 +1,7 @@
 # Base image for all stages
 # Uses Debian slim (glibc) for consistency with API/orchestrator and to prevent
 # future native addon compatibility issues with Alpine's musl libc.
-FROM node:24-slim AS base
+FROM git.mosaicstack.dev/mosaic/node-base:24-slim AS base
 
 # Install pnpm globally
 RUN corepack enable && corepack prepare pnpm@10.27.0 --activate
@@ -24,6 +24,9 @@ COPY packages/ui/package.json ./packages/ui/
 COPY packages/config/package.json ./packages/config/
 COPY apps/web/package.json ./apps/web/
 
+# Copy npm configuration for native binary architecture hints
+COPY .npmrc ./
+
 # Install dependencies (no cache mount — Kaniko builds are ephemeral in CI)
 RUN pnpm install --frozen-lockfile
 
@@ -38,6 +41,9 @@ COPY packages/ui/package.json ./packages/ui/
 COPY packages/config/package.json ./packages/config/
 COPY apps/web/package.json ./apps/web/
 
+# Copy npm configuration for native binary architecture hints
+COPY .npmrc ./
+
 # Install production dependencies only
 RUN pnpm install --frozen-lockfile --prod
 
@@ -87,15 +93,14 @@ RUN mkdir -p ./apps/web/public
 # ======================
 # Production stage
 # ======================
-FROM node:24-slim AS production
+FROM git.mosaicstack.dev/mosaic/node-base:24-slim AS production
 
-# Install dumb-init for proper signal handling (static binary from GitHub,
+# dumb-init, ca-certificates pre-installed in base image
-# avoids apt-get which fails under Kaniko with bookworm GPG signature errors)
-ADD https://github.com/Yelp/dumb-init/releases/download/v1.2.5/dumb-init_1.2.5_x86_64 /usr/local/bin/dumb-init
 
 # Single RUN to minimize Kaniko filesystem snapshots (each RUN = full snapshot)
+# - Remove npm/npx to reduce image size (not used in production)
+# - Create non-root user
 RUN rm -rf /usr/local/lib/node_modules/npm /usr/local/bin/npm /usr/local/bin/npx \
-    && chmod 755 /usr/local/bin/dumb-init \
     && groupadd -g 1001 nodejs && useradd -m -u 1001 -g nodejs nextjs
 
 WORKDIR /app

apps/web/src/app/(authenticated)/kanban/page.tsx

@@ -184,10 +184,11 @@ function TaskCard({ task, provided, snapshot, columnAccent }: TaskCardProps): Re
 interface KanbanColumnProps {
   config: ColumnConfig;
   tasks: Task[];
-  onAddTask: (status: TaskStatus, title: string) => Promise<void>;
+  onAddTask: (status: TaskStatus, title: string, projectId?: string) => Promise<void>;
+  projectId?: string;
 }
 
-function KanbanColumn({ config, tasks, onAddTask }: KanbanColumnProps): ReactElement {
+function KanbanColumn({ config, tasks, onAddTask, projectId }: KanbanColumnProps): ReactElement {
   const [showAddForm, setShowAddForm] = useState(false);
   const [inputValue, setInputValue] = useState("");
   const [isSubmitting, setIsSubmitting] = useState(false);
@@ -208,7 +209,7 @@ function KanbanColumn({ config, tasks, onAddTask }: KanbanColumnProps): ReactEle
 
     setIsSubmitting(true);
     try {
-      await onAddTask(config.status, inputValue.trim());
+      await onAddTask(config.status, inputValue.trim(), projectId);
       setInputValue("");
       setShowAddForm(false);
     } catch (err) {
@@ -362,6 +363,45 @@ function KanbanColumn({ config, tasks, onAddTask }: KanbanColumnProps): ReactEle
             }}
             autoFocus
           />
+          <div style={{ display: "flex", gap: 6, marginTop: 6 }}>
+            <button
+              type="submit"
+              disabled={isSubmitting || !inputValue.trim()}
+              style={{
+                padding: "6px 12px",
+                borderRadius: "var(--r)",
+                border: "1px solid var(--primary)",
+                background: "var(--primary)",
+                color: "#fff",
+                fontSize: "0.8rem",
+                fontWeight: 500,
+                cursor: isSubmitting || !inputValue.trim() ? "not-allowed" : "pointer",
+                opacity: isSubmitting || !inputValue.trim() ? 0.5 : 1,
+              }}
+            >
+              ✓ Add
+            </button>
+            <button
+              type="button"
+              onClick={() => {
+                setShowAddForm(false);
+                setInputValue("");
+              }}
+              disabled={isSubmitting}
+              style={{
+                padding: "6px 12px",
+                borderRadius: "var(--r)",
+                border: "1px solid var(--border)",
+                background: "transparent",
+                color: "var(--muted)",
+                fontSize: "0.8rem",
+                cursor: isSubmitting ? "not-allowed" : "pointer",
+                opacity: isSubmitting ? 0.5 : 1,
+              }}
+            >
+              Cancel
+            </button>
+          </div>
           <div style={{ marginTop: 6, fontSize: "0.75rem", color: "var(--muted)" }}>
             Press{" "}
             <kbd
@@ -745,10 +785,17 @@ export default function KanbanPage(): ReactElement {
   /* --- add task handler --- */
 
   const handleAddTask = useCallback(
-    async (status: TaskStatus, title: string) => {
+    async (status: TaskStatus, title: string, projectId?: string) => {
       try {
         const wsId = workspaceId ?? undefined;
-        const newTask = await createTask({ title, status }, wsId);
+        const taskData: { title: string; status: TaskStatus; projectId?: string } = {
+          title,
+          status,
+        };
+        if (projectId) {
+          taskData.projectId = projectId;
+        }
+        const newTask = await createTask(taskData, wsId);
         // Optimistically add to local state
         setTasks((prev) => [...prev, newTask]);
       } catch (err: unknown) {
@@ -866,23 +913,8 @@ export default function KanbanPage(): ReactElement {
             Clear filters
           </button>
         </div>
-      ) : tasks.length === 0 ? (
-        /* Empty state */
-        <div
-          style={{
-            background: "var(--surface)",
-            border: "1px solid var(--border)",
-            borderRadius: "var(--r-lg)",
-            padding: 48,
-            textAlign: "center",
-          }}
-        >
-          <p style={{ color: "var(--muted)", margin: 0, fontSize: "0.9rem" }}>
-            No tasks yet. Create some tasks to see them here.
-          </p>
-        </div>
       ) : (
-        /* Board */
+        /* Board (always render columns to allow adding first task) */
         <DragDropContext onDragEnd={handleDragEnd}>
           <div
             style={{
@@ -899,6 +931,7 @@ export default function KanbanPage(): ReactElement {
                 config={col}
                 tasks={grouped[col.status]}
                 onAddTask={handleAddTask}
+                projectId={filterProject}
               />
             ))}
           </div>

apps/web/src/components/layout/AppHeader.tsx

@@ -5,6 +5,7 @@ import Link from "next/link";
 import { usePathname } from "next/navigation";
 import { useAuth } from "@/lib/auth/auth-context";
 import { ThemeToggle } from "./ThemeToggle";
+import { UsageWidget } from "@/components/ui/UsageWidget";
 import { useSidebar } from "./SidebarContext";
 
 /**
@@ -350,6 +351,9 @@ export function AppHeader(): React.JSX.Element {
         {/* Theme Toggle */}
         <ThemeToggle />
 
+        {/* Usage Widget */}
+        <UsageWidget />
+
         {/* User Avatar + Dropdown */}
         <div ref={dropdownRef} style={{ position: "relative", flexShrink: 0 }}>
           <button

apps/web/src/components/ui/UsageWidget.tsx

@@ -0,0 +1,337 @@
+"use client";
+
+import { useState, useEffect, useRef, useCallback } from "react";
+import { fetchUsageSummary, type UsageSummary } from "@/lib/api/telemetry";
+
+// ─── Types ───────────────────────────────────────────────────────────
+
+interface UsageTier {
+  name: string;
+  tokens: number;
+  limit: number;
+  percentage: number;
+}
+
+// ─── Helpers ─────────────────────────────────────────────────────────
+
+function getUsageColor(percentage: number): string {
+  if (percentage < 60) return "var(--success)";
+  if (percentage < 80) return "var(--warn)";
+  return "var(--danger)";
+}
+
+function formatTokens(value: number): string {
+  if (value >= 1_000_000) return `${(value / 1_000_000).toFixed(1)}M`;
+  if (value >= 1_000) return `${(value / 1_000).toFixed(1)}K`;
+  return value.toFixed(0);
+}
+
+// ─── Component ───────────────────────────────────────────────────────
+
+export function UsageWidget(): React.JSX.Element {
+  const [summary, setSummary] = useState<UsageSummary | null>(null);
+  const [popoverOpen, setPopoverOpen] = useState(false);
+  const [isLoading, setIsLoading] = useState(true);
+  const popoverRef = useRef<HTMLDivElement>(null);
+
+  const tiers: UsageTier[] = summary
+    ? [
+        {
+          name: "Session",
+          tokens: summary.totalTokens,
+          limit: 100_000,
+          percentage: (summary.totalTokens / 100_000) * 100,
+        },
+        {
+          name: "Daily",
+          tokens: summary.totalTokens,
+          limit: 500_000,
+          percentage: (summary.totalTokens / 500_000) * 100,
+        },
+        {
+          name: "Monthly",
+          tokens: summary.totalTokens,
+          limit: 2_000_000,
+          percentage: (summary.totalTokens / 2_000_000) * 100,
+        },
+      ]
+    : [];
+
+  const currentTier = tiers[0];
+  const usageColor = currentTier ? getUsageColor(currentTier.percentage) : "var(--muted)";
+
+  const loadSummary = useCallback(async () => {
+    try {
+      const data = await fetchUsageSummary("30d");
+      setSummary(data);
+    } catch (err) {
+      console.error("Failed to load usage summary:", err);
+    } finally {
+      setIsLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    void loadSummary();
+  }, [loadSummary]);
+
+  useEffect(() => {
+    function handleClickOutside(event: MouseEvent): void {
+      if (popoverRef.current && !popoverRef.current.contains(event.target as Node)) {
+        setPopoverOpen(false);
+      }
+    }
+
+    if (!popoverOpen) {
+      return;
+    }
+
+    document.addEventListener("mousedown", handleClickOutside);
+    return (): void => {
+      document.removeEventListener("mousedown", handleClickOutside);
+    };
+  }, [popoverOpen]);
+
+  const pct = currentTier ? Math.min(currentTier.percentage, 100) : 0;
+
+  return (
+    <div ref={popoverRef} style={{ position: "relative" }}>
+      <button
+        onClick={(): void => {
+          setPopoverOpen((prev) => !prev);
+        }}
+        aria-label="Usage widget"
+        aria-expanded={popoverOpen}
+        aria-haspopup="true"
+        className="hidden lg:flex items-center"
+        style={{
+          gap: 6,
+          padding: "5px 10px",
+          borderRadius: 6,
+          background: "var(--surface)",
+          border: `1px solid ${popoverOpen ? usageColor : "var(--border)"}`,
+          fontSize: "0.75rem",
+          fontFamily: "var(--mono)",
+          color: "var(--text-2)",
+          cursor: "pointer",
+          transition: "border-color 0.15s, color 0.15s",
+          flexShrink: 0,
+        }}
+        onMouseEnter={(e): void => {
+          (e.currentTarget as HTMLButtonElement).style.borderColor = usageColor;
+          (e.currentTarget as HTMLButtonElement).style.color = "var(--text)";
+        }}
+        onMouseLeave={(e): void => {
+          if (!popoverOpen) {
+            (e.currentTarget as HTMLButtonElement).style.borderColor = "var(--border)";
+            (e.currentTarget as HTMLButtonElement).style.color = "var(--text-2)";
+          }
+        }}
+      >
+        <svg
+          width="12"
+          height="12"
+          viewBox="0 0 16 16"
+          fill="none"
+          stroke="currentColor"
+          strokeWidth="2"
+          strokeLinecap="round"
+          strokeLinejoin="round"
+          style={{ color: usageColor, flexShrink: 0 }}
+          aria-hidden="true"
+        >
+          <path d="M9 1L3 9h5l-1 6 6-8H8l1-6z" />
+        </svg>
+        <span style={{ fontWeight: 500, color: "var(--text-2)" }}>
+          {isLoading ? "..." : summary ? formatTokens(summary.totalTokens) : "0"}
+        </span>
+        {!isLoading && currentTier && (
+          <div
+            style={{
+              width: 24,
+              height: 4,
+              borderRadius: 2,
+              background: "var(--bg-mid)",
+              overflow: "hidden",
+              flexShrink: 0,
+            }}
+            aria-hidden="true"
+          >
+            <div
+              style={{
+                width: `${String(pct)}%`,
+                height: "100%",
+                background: usageColor,
+                borderRadius: 2,
+                transition: "width 0.3s ease-out",
+              }}
+            />
+          </div>
+        )}
+        {!isLoading && currentTier && (
+          <span style={{ fontWeight: 600, color: usageColor, minWidth: 32, textAlign: "right" }}>
+            {Math.round(currentTier.percentage)}%
+          </span>
+        )}
+      </button>
+
+      {popoverOpen && (
+        <div
+          role="dialog"
+          aria-label="Usage details"
+          style={{
+            position: "absolute",
+            top: "calc(100% + 8px)",
+            right: 0,
+            width: 280,
+            background: "var(--surface)",
+            border: "1px solid var(--border)",
+            borderRadius: 8,
+            padding: 12,
+            boxShadow: "0 8px 32px rgba(0,0,0,0.3)",
+            zIndex: 200,
+          }}
+        >
+          <div
+            style={{
+              fontSize: "0.83rem",
+              fontWeight: 600,
+              color: "var(--text)",
+              marginBottom: 12,
+              paddingBottom: 8,
+              borderBottom: "1px solid var(--border)",
+            }}
+          >
+            Token Usage
+          </div>
+
+          {isLoading ? (
+            <div
+              style={{
+                textAlign: "center",
+                padding: "20px 0",
+                color: "var(--muted)",
+                fontSize: "0.75rem",
+              }}
+            >
+              Loading usage data…
+            </div>
+          ) : summary ? (
+            <>
+              <div style={{ marginBottom: 12, display: "flex", flexDirection: "column", gap: 8 }}>
+                <div
+                  style={{ display: "flex", justifyContent: "space-between", fontSize: "0.75rem" }}
+                >
+                  <span style={{ color: "var(--muted)" }}>Total Tokens</span>
+                  <span style={{ color: "var(--text)", fontFamily: "var(--mono)" }}>
+                    {formatTokens(summary.totalTokens)}
+                  </span>
+                </div>
+                <div
+                  style={{ display: "flex", justifyContent: "space-between", fontSize: "0.75rem" }}
+                >
+                  <span style={{ color: "var(--muted)" }}>Estimated Cost</span>
+                  <span style={{ color: "var(--text)", fontFamily: "var(--mono)" }}>
+                    ${summary.totalCost.toFixed(2)}
+                  </span>
+                </div>
+                <div
+                  style={{ display: "flex", justifyContent: "space-between", fontSize: "0.75rem" }}
+                >
+                  <span style={{ color: "var(--muted)" }}>Tasks</span>
+                  <span style={{ color: "var(--text)", fontFamily: "var(--mono)" }}>
+                    {summary.taskCount}
+                  </span>
+                </div>
+              </div>
+
+              <div style={{ display: "flex", flexDirection: "column", gap: 10 }}>
+                {tiers.map((tier) => {
+                  const tierPct = Math.min(tier.percentage, 100);
+                  return (
+                    <div key={tier.name}>
+                      <div
+                        style={{
+                          display: "flex",
+                          justifyContent: "space-between",
+                          fontSize: "0.75rem",
+                          marginBottom: 4,
+                        }}
+                      >
+                        <span style={{ color: "var(--text-2)" }}>{tier.name}</span>
+                        <span
+                          style={{
+                            color: getUsageColor(tier.percentage),
+                            fontFamily: "var(--mono)",
+                            fontWeight: 500,
+                          }}
+                        >
+                          {formatTokens(tier.tokens)} / {formatTokens(tier.limit)}
+                        </span>
+                      </div>
+                      <div
+                        style={{
+                          width: "100%",
+                          height: 6,
+                          borderRadius: 3,
+                          background: "var(--bg-mid)",
+                          overflow: "hidden",
+                        }}
+                      >
+                        <div
+                          style={{
+                            width: `${String(tierPct)}%`,
+                            height: "100%",
+                            background: getUsageColor(tier.percentage),
+                            borderRadius: 3,
+                            transition: "width 0.3s ease-out",
+                          }}
+                        />
+                      </div>
+                    </div>
+                  );
+                })}
+              </div>
+
+              <a
+                href="/usage"
+                onClick={(): void => {
+                  setPopoverOpen(false);
+                }}
+                style={{
+                  display: "block",
+                  marginTop: 12,
+                  paddingTop: 8,
+                  borderTop: "1px solid var(--border)",
+                  fontSize: "0.75rem",
+                  color: "var(--primary)",
+                  textDecoration: "none",
+                  textAlign: "center",
+                }}
+                onMouseEnter={(e): void => {
+                  (e.currentTarget as HTMLAnchorElement).style.textDecoration = "underline";
+                }}
+                onMouseLeave={(e): void => {
+                  (e.currentTarget as HTMLAnchorElement).style.textDecoration = "none";
+                }}
+              >
+                View detailed usage →
+              </a>
+            </>
+          ) : (
+            <div
+              style={{
+                textAlign: "center",
+                padding: "20px 0",
+                color: "var(--muted)",
+                fontSize: "0.75rem",
+              }}
+            >
+              No usage data available
+            </div>
+          )}
+        </div>
+      )}
+    </div>
+  );
+}

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";
+import type { WidgetProps, Event } from "@mosaic/shared";
-
+import { fetchEvents } from "@/lib/api/events";
-interface Event {
-  id: string;
-  title: string;
-  startTime: string;
-  endTime?: string;
-  location?: string;
-  allDay: boolean;
-}
 
 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);
+    let isMounted = 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);
 
-    setTimeout(() => {
+    const loadEvents = async (): Promise<void> => {
-      setEvents([
+      setIsLoading(true);
-        {
+      try {
-          id: "1",
+        const data = await fetchEvents();
-          title: "Team Standup",
+        if (isMounted) {
-          startTime: new Date(today.setHours(9, 0, 0, 0)).toISOString(),
+          setEvents(data);
-          endTime: new Date(today.setHours(9, 30, 0, 0)).toISOString(),
+        }
-          location: "Zoom",
+      } catch {
-          allDay: false,
+        if (isMounted) {
-        },
+          setEvents([]);
-        {
+        }
-          id: "2",
+      } finally {
-          title: "Project Review",
+        if (isMounted) {
-          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);
+        }
+      }
+    };
+
+    void loadEvents();
+
+    return (): void => {
+      isMounted = false;
+    };
   }, []);
 
-  const formatTime = (dateString: string): string => {
+  const formatTime = (dateValue: Date | string): string => {
-    const date = new Date(dateString);
+    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 formatDay = (dateValue: Date | string): string => {
-    const date = new Date(dateString);
+    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 {
+export function TasksWidget({ id: _id, config: _config }: WidgetProps): React.JSX.Element {
-  id: string;
-  title: string;
-  status: string;
-  priority: string;
-  dueDate?: string;
-}
-
-// eslint-disable-next-line no-empty-pattern
-export function TasksWidget({}: WidgetProps): React.JSX.Element {
   const [tasks, setTasks] = useState<Task[]>([]);
   const [isLoading, setIsLoading] = useState(true);
 
-  // Mock data for now - will fetch from API later
   useEffect(() => {
+    let isMounted = true;
+
+    const loadTasks = async (): Promise<void> => {
       setIsLoading(true);
-    // Simulate API call
+      try {
-    setTimeout(() => {
+        const data = await fetchTasks();
-      setTasks([
+        if (isMounted) {
-        {
+          setTasks(data);
-          id: "1",
+        }
-          title: "Complete project documentation",
+      } catch {
-          status: "IN_PROGRESS",
+        if (isMounted) {
-          priority: "HIGH",
+          setTasks([]);
-          dueDate: "2024-02-01",
+        }
-        },
+      } finally {
-        {
+        if (isMounted) {
-          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);
+        }
+      }
+    };
+
+    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 => {
+  const getStatusIcon = (status: TaskStatus): React.JSX.Element => {
-    return status === "COMPLETED" ? (
+    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,
+    inProgress: tasks.filter((t) => t.status === TaskStatus.IN_PROGRESS).length,
-    completed: tasks.filter((t) => t.status === "COMPLETED").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 waitFor(() => {
-    await vi.advanceTimersByTimeAsync(500);
+    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("API Planning")).toBeInTheDocument();
-    expect(screen.getByText("Project Review")).toBeInTheDocument();
+    expect(screen.getByText("API Review")).toBeInTheDocument();
-    expect(screen.getByText("Sprint Planning")).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 { describe, it, expect, beforeEach, vi } from "vitest";
-import { act, render, screen } from "@testing-library/react";
+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 waitFor(() => {
-    await vi.advanceTimersByTimeAsync(500);
+    expect(screen.queryByText("Loading tasks...")).not.toBeInTheDocument();
   });
 }
 
 describe("TasksWidget", (): void => {
   beforeEach((): void => {
-    vi.useFakeTimers();
+    vi.clearAllMocks();
-  });
+    vi.mocked(fetchTasks).mockResolvedValue(mockTasks);
-
-  afterEach((): void => {
-    vi.useRealTimers();
   });
 
   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("API task one")).toBeInTheDocument();
-    expect(screen.getByText("Review pull requests")).toBeInTheDocument();
+    expect(screen.getByText("API task two")).toBeInTheDocument();
-    expect(screen.getByText("Update dependencies")).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;
-function generateDateRange(range: TimeRange): string[] {
+  calls: number;
-  const days = range === "7d" ? 7 : range === "30d" ? 30 : 90;
+  promptTokens: number;
-  const dates: string[] = [];
+  completionTokens: number;
-  const now = new Date();
+  totalTokens: number;
-
+  costCents: number;
-  for (let i = days - 1; i >= 0; i--) {
+  averageDurationMs: number;
-    const d = new Date(now);
-    d.setDate(d.getDate() - i);
-    dates.push(d.toISOString().split("T")[0] ?? "");
 }
 
-  return dates;
+interface ModelUsageAnalyticsItem {
+  model: string;
+  calls: number;
+  promptTokens: number;
+  completionTokens: number;
+  totalTokens: number;
+  costCents: number;
+  averageDurationMs: number;
 }
 
-function generateMockTokenUsage(range: TimeRange): TokenUsagePoint[] {
+interface TaskTypeUsageAnalyticsItem {
-  const dates = generateDateRange(range);
+  taskType: string;
+  calls: number;
+  promptTokens: number;
+  completionTokens: number;
+  totalTokens: number;
+  costCents: number;
+  averageDurationMs: number;
+}
 
-  return dates.map((date) => {
+interface UsageAnalyticsResponse {
-    const baseInput = 8000 + Math.floor(Math.random() * 12000);
+  totalCalls: number;
-    const baseOutput = 3000 + Math.floor(Math.random() * 7000);
+  totalPromptTokens: number;
-    return {
+  totalCompletionTokens: number;
-      date,
+  totalTokens: number;
-      inputTokens: baseInput,
+  totalCostCents: number;
-      outputTokens: baseOutput,
+  averageDurationMs: number;
-      totalTokens: baseInput + baseOutput,
+  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;
+  }
+
+  const request = apiGet<ApiResponse<UsageAnalyticsResponse>>(buildAnalyticsEndpoint(timeRange))
+    .then((response) => response.data)
+    .finally(() => {
+      analyticsRequestCache.delete(timeRange);
     });
-}
 
-function generateMockSummary(range: TimeRange): UsageSummary {
+  analyticsRequestCache.set(timeRange, request);
-  const multiplier = range === "7d" ? 1 : range === "30d" ? 4 : 12;
+  return request;
-  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" },
-  ];
 }
 
 // ─── 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 analytics = await fetchUsageAnalytics(timeRange);
-  // const response = await apiGet<ApiResponse<UsageSummary>>(`/api/telemetry/summary?range=${timeRange}`);
+
-  // return response.data;
+  return {
-  void apiGet; // suppress unused import warning in the meantime
+    totalTokens: analytics.totalTokens,
-  await new Promise((resolve) => setTimeout(resolve, 200));
+    totalCost: analytics.totalCostCents / 100,
-  return generateMockSummary(timeRange);
+    taskCount: analytics.totalCalls,
+    avgQualityGatePassRate: 0,
+  };
 }
 
 /**
  * Fetch token usage time series for charts
  */
-export async function fetchTokenUsage(timeRange: TimeRange): Promise<TokenUsagePoint[]> {
+export function fetchTokenUsage(timeRange: TimeRange): Promise<TokenUsagePoint[]> {
-  // TODO: Replace with real API call
+  void timeRange;
-  // const response = await apiGet<ApiResponse<TokenUsagePoint[]>>(`/api/telemetry/tokens?range=${timeRange}`);
+  return Promise.resolve([]);
-  // return response.data;
-  await new Promise((resolve) => setTimeout(resolve, 250));
-  return generateMockTokenUsage(timeRange);
 }
 
 /**
  * Fetch cost breakdown by model
  */
 export async function fetchCostBreakdown(timeRange: TimeRange): Promise<CostBreakdownItem[]> {
-  // TODO: Replace with real API call
+  const analytics = await fetchUsageAnalytics(timeRange);
-  // const response = await apiGet<ApiResponse<CostBreakdownItem[]>>(`/api/telemetry/costs?range=${timeRange}`);
+
-  // return response.data;
+  return analytics.byModel
-  await new Promise((resolve) => setTimeout(resolve, 200));
+    .filter((item) => item.calls > 0)
-  void timeRange;
+    .sort((a, b) => b.costCents - a.costCents)
-  return generateMockCostBreakdown();
+    .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 analytics = await fetchUsageAnalytics(timeRange);
-  // const response = await apiGet<ApiResponse<TaskOutcomeItem[]>>(`/api/telemetry/outcomes?range=${timeRange}`);
+
-  // return response.data;
+  return analytics.byTaskType
-  await new Promise((resolve) => setTimeout(resolve, 150));
+    .filter((item) => item.calls > 0)
-  void timeRange;
+    .map((item, index) => ({
-  return generateMockTaskOutcomes();
+      outcome: item.taskType,
+      count: item.calls,
+      color: TASK_OUTCOME_COLORS[index % TASK_OUTCOME_COLORS.length] ?? "#94A3B8",
+    }));
 }
 
 /**

docker/base.Dockerfile

@@ -0,0 +1,16 @@
+FROM node:24-slim AS base
+
+# Pre-bake OS updates and common packages shared across all apps.
+# Rebuild this image weekly or when base packages change.
+# Push to: git.mosaicstack.dev/mosaic/node-base:24-slim
+RUN apt-get update && apt-get upgrade -y --no-install-recommends \
+    && apt-get install -y --no-install-recommends \
+        openssl \
+        ca-certificates \
+        curl \
+        dumb-init \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+# Enable corepack for pnpm
+RUN corepack enable