feat(tracker-web): page chrome via @bytelyst/dashboard-components (UX-10)

- error.tsx now renders ErrorPage (keeps trackEvent + reset wiring) (10.1)
- add PageHeader (title + breadcrumbs) to /dashboard, /dashboard/items,
  /dashboard/board and the item detail page for a consistent header band (10.2)
- replace ad-hoc loading text with LoadingSpinner on overview, items, detail (10.3)

Generated with [Devin](https://cli.devin.ai/docs)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

dashboards/tracker-web/docs/roadmaps/UX_INTEGRATION_BYTELYST.md

@@ -186,14 +186,14 @@ pnpm build      # final gate
 
 ## UX-10 — Page chrome via `@bytelyst/dashboard-components`
 
-- [ ] **10.1** `src/app/error.tsx`: render `ErrorPage` from `@bytelyst/dashboard-components`
+- [x] **10.1** `src/app/error.tsx`: render `ErrorPage` from `@bytelyst/dashboard-components`
       (keep the existing `trackEvent` telemetry side-effect + `reset` wiring). `not-found.tsx`
       already uses `NotFoundPage` — leave it.
-- [ ] **10.2** Add `PageHeader` (title + breadcrumbs) to the top of `/dashboard`, `/dashboard/items`,
+- [x] **10.2** Add `PageHeader` (title + breadcrumbs) to the top of `/dashboard`, `/dashboard/items`,
       `/dashboard/board`, and the item detail page for a consistent header band.
-- [ ] **10.3** Replace ad-hoc loading text with `LoadingSpinner`/`LoadingSkeleton` where a full
+- [x] **10.3** Replace ad-hoc loading text with `LoadingSpinner`/`LoadingSkeleton` where a full
       `SkeletonGroup` (UX-2) is overkill.
-      **Verify:** `pnpm typecheck && pnpm lint && pnpm build`.
+      **Verify:** `pnpm typecheck && pnpm lint && pnpm build`. (UX-10 verified: tc/lint/test 159 ✓/build/e2e 18 ✓; no new color literals)
 
 ## UX-11 — Adopt `@bytelyst/auth-ui` on the login surface
 
@@ -253,7 +253,7 @@ pnpm build      # final gate
 
 ```
 Core   : UX-1 ✅  UX-2 ⬜  UX-3 ⬜  UX-4 ⬜  UX-5 ⬜  UX-6 ⬜  UX-7 ⬜  UX-8 ⬜
-Expand : UX-9 ✅  UX-10 ⬜  UX-11 ⬜  UX-12 ⬜  UX-13 ⬜   (stretch: 12.3, 13.*)
+Expand : UX-9 ✅  UX-10 ✅  UX-11 ⬜  UX-12 ⬜  UX-13 ⬜   (stretch: 12.3, 13.*)
 ```
 
 **UX-1 is done** (token bridge + Primitives adapter, commit `dc01dd02`) — the `--bl-*` bridge is

dashboards/tracker-web/src/app/dashboard/board/page.tsx

@@ -2,6 +2,7 @@
 
 import { useEffect, useState, useCallback } from 'react';
 import Link from 'next/link';
+import { PageHeader } from '@bytelyst/dashboard-components';
 import { useAuth } from '@/lib/auth-context';
 import { listItems, updateItemStatus, type TrackerItem } from '@/lib/tracker-client';
 
@@ -56,10 +57,11 @@ export default function BoardPage() {
 
   return (
     <div className="space-y-6">
-      <div>
-        <h1 className="text-2xl font-bold tracking-tight">Board</h1>
-        <p className="text-sm text-muted-foreground">Kanban view of all items</p>
-      </div>
+      <PageHeader
+        title="Board"
+        breadcrumbs={[{ label: 'Dashboard', href: '/dashboard' }, { label: 'Board' }]}
+      />
+      <p className="-mt-4 text-sm text-muted-foreground">Kanban view of all items</p>
 
       {error && (
         <div className="rounded-md bg-destructive/10 px-4 py-3 text-sm text-destructive">

dashboards/tracker-web/src/app/dashboard/items/[id]/page.tsx

@@ -1,7 +1,8 @@
 'use client';
 
 import { useEffect, useState } from 'react';
-import { useParams, useRouter } from 'next/navigation';
+import { useParams } from 'next/navigation';
+import { PageHeader, LoadingSpinner } from '@bytelyst/dashboard-components';
 import { useAuth } from '@/lib/auth-context';
 import {
   getItem,
@@ -20,7 +21,6 @@ const VISIBILITIES = ['internal', 'public'] as const;
 
 export default function ItemDetailPage() {
   const { id } = useParams<{ id: string }>();
-  const router = useRouter();
   const { token } = useAuth();
 
   const [item, setItem] = useState<TrackerItem | null>(null);
@@ -109,21 +109,35 @@ export default function ItemDetailPage() {
 
   if (!item) {
     return (
-      <div className="flex min-h-[400px] items-center justify-center text-muted-foreground">
-        {error || 'Loading...'}
+      <div className="mx-auto flex min-h-[400px] max-w-3xl items-center justify-center">
+        {error ? <p className="text-sm text-destructive">{error}</p> : <LoadingSpinner />}
       </div>
     );
   }
 
   return (
     <div className="mx-auto max-w-3xl space-y-6">
-      {/* Back */}
-      <button
-        onClick={() => router.back()}
-        className="text-sm text-muted-foreground hover:text-foreground"
-      >
-        ← Back
-      </button>
+      <PageHeader
+        title={item.title}
+        breadcrumbs={[
+          { label: 'Dashboard', href: '/dashboard' },
+          { label: 'Items', href: '/dashboard/items' },
+        ]}
+        actions={
+          editing ? undefined : (
+            <button
+              onClick={() => {
+                setEditTitle(item.title);
+                setEditDescription(item.description);
+                setEditing(true);
+              }}
+              className="rounded-md px-3 py-1.5 text-sm text-muted-foreground hover:bg-accent"
+            >
+              Edit
+            </button>
+          )
+        }
+      />
 
       {error && (
         <div className="rounded-md bg-destructive/10 px-4 py-3 text-sm text-destructive">
@@ -131,7 +145,7 @@ export default function ItemDetailPage() {
         </div>
       )}
 
-      {/* Header */}
+      {/* Title/description editor */}
       <div className="space-y-2">
         {editing ? (
           <div className="space-y-3">
@@ -163,26 +177,9 @@ export default function ItemDetailPage() {
             </div>
           </div>
         ) : (
-          <>
-            <div className="flex items-start justify-between">
-              <h1 className="text-2xl font-bold tracking-tight">{item.title}</h1>
-              <button
-                onClick={() => {
-                  setEditTitle(item.title);
-                  setEditDescription(item.description);
-                  setEditing(true);
-                }}
-                className="rounded-md px-3 py-1.5 text-sm text-muted-foreground hover:bg-accent"
-              >
-                Edit
-              </button>
-            </div>
-            {item.description && (
-              <p className="whitespace-pre-wrap text-sm text-muted-foreground">
-                {item.description}
-              </p>
-            )}
-          </>
+          item.description && (
+            <p className="whitespace-pre-wrap text-sm text-muted-foreground">{item.description}</p>
+          )
         )}
       </div>
 

dashboards/tracker-web/src/app/dashboard/items/page.tsx

@@ -3,6 +3,7 @@
 import { useEffect, useState, useCallback, useMemo } from 'react';
 import Link from 'next/link';
 import { DataTable, type ColumnDef } from '@bytelyst/data-table';
+import { PageHeader, LoadingSpinner } from '@bytelyst/dashboard-components';
 import { useAuth } from '@/lib/auth-context';
 import { listItems, createItem, deleteItem, type TrackerItem } from '@/lib/tracker-client';
 
@@ -191,18 +192,19 @@ export default function ItemsListPage() {
   return (
     <div className="space-y-6">
       {/* Header */}
-      <div className="flex items-center justify-between">
-        <div>
-          <h1 className="text-2xl font-bold tracking-tight">Items</h1>
-          <p className="text-sm text-muted-foreground">{total} items total</p>
-        </div>
-        <button
-          onClick={() => setShowCreate(true)}
-          className="rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:bg-primary/90"
-        >
-          + New Item
-        </button>
-      </div>
+      <PageHeader
+        title="Items"
+        breadcrumbs={[{ label: 'Dashboard', href: '/dashboard' }, { label: 'Items' }]}
+        actions={
+          <button
+            onClick={() => setShowCreate(true)}
+            className="rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:bg-primary/90"
+          >
+            + New Item
+          </button>
+        }
+      />
+      <p className="-mt-4 text-sm text-muted-foreground">{total} items total</p>
 
       {error && (
         <div className="rounded-md bg-destructive/10 px-4 py-3 text-sm text-destructive">
@@ -256,7 +258,9 @@ export default function ItemsListPage() {
 
       {/* Items table — @bytelyst/data-table (Wave 9.C.9) */}
       {loading ? (
-        <div className="text-muted-foreground">Loading...</div>
+        <div className="flex justify-center py-10">
+          <LoadingSpinner />
+        </div>
       ) : (
         <DataTable
           ariaLabel="Tracker items"

dashboards/tracker-web/src/app/dashboard/page.tsx

@@ -1,6 +1,7 @@
 'use client';
 
 import { useEffect, useState } from 'react';
+import { PageHeader, LoadingSpinner } from '@bytelyst/dashboard-components';
 import { useAuth } from '@/lib/auth-context';
 import { getStats, type TrackerStats } from '@/lib/tracker-client';
 
@@ -54,10 +55,8 @@ export default function DashboardOverview() {
 
   return (
     <div className="space-y-6">
-      <div>
-        <h1 className="text-2xl font-bold tracking-tight">Dashboard</h1>
-        <p className="text-sm text-muted-foreground">Overview of all tracked items</p>
-      </div>
+      <PageHeader title="Dashboard" />
+      <p className="-mt-4 text-sm text-muted-foreground">Overview of all tracked items</p>
 
       {error && (
         <div className="rounded-md bg-destructive/10 px-4 py-3 text-sm text-destructive">
@@ -81,7 +80,9 @@ export default function DashboardOverview() {
           </div>
         </div>
       ) : !error ? (
-        <div className="text-muted-foreground">Loading stats...</div>
+        <div className="flex justify-center py-10">
+          <LoadingSpinner />
+        </div>
       ) : null}
     </div>
   );

dashboards/tracker-web/src/app/error.tsx

@@ -1,6 +1,7 @@
 'use client';
 
 import { useEffect } from 'react';
+import { ErrorPage } from '@bytelyst/dashboard-components';
 import { trackEvent } from '@/lib/telemetry';
 
 export default function GlobalError({
@@ -19,19 +20,7 @@ export default function GlobalError({
 
   return (
     <div className="flex min-h-screen items-center justify-center p-4">
-      <div className="mx-auto max-w-md text-center">
-        <div className="mb-4 text-5xl">⚠</div>
-        <h2 className="mb-2 text-xl font-semibold">Something went wrong</h2>
-        <p className="mb-6 text-sm text-muted-foreground">
-          {error.message || 'An unexpected error occurred.'}
-        </p>
-        <button
-          onClick={reset}
-          className="rounded-md bg-primary px-4 py-2 text-sm font-medium text-primary-foreground hover:bg-primary/90"
-        >
-          Try again
-        </button>
-      </div>
+      <ErrorPage message={error.message || 'An unexpected error occurred.'} onRetry={reset} />
     </div>
   );
 }