diff --git a/dashboards/tracker-web/docs/roadmaps/UX_INTEGRATION_BYTELYST.md b/dashboards/tracker-web/docs/roadmaps/UX_INTEGRATION_BYTELYST.md
index 1857bbf4..2773e4ab 100644
--- a/dashboards/tracker-web/docs/roadmaps/UX_INTEGRATION_BYTELYST.md
+++ b/dashboards/tracker-web/docs/roadmaps/UX_INTEGRATION_BYTELYST.md
@@ -215,8 +215,11 @@ pnpm build      # final gate
 
 ## UX-12 — Detail & board richness (Tabs · Tooltip · Drawer · Timeline · rich-text)
 
-- [ ] **12.1** `/dashboard` board↔list: use `SegmentedControl` (or `Tabs`) for the view toggle
+- [x] **12.1** `/dashboard` board↔list: use `SegmentedControl` (or `Tabs`) for the view toggle
       instead of bespoke buttons; `Tooltip` on truncated titles / status dots.
+      (SegmentedControl now drives the roadmap board/list toggle — the app's only board↔list
+      toggle — replacing the bespoke `blue-600` buttons; `Tooltip` wraps the truncated board
+      card titles. e2e toggle selector updated button→radio. UX-12.1 verified: tc/lint/test 162 ✓/build/e2e 18 ✓)
 - [ ] **12.2** Item detail: move row/item actions into an `ActionMenu`, and render the item's
       activity/comment history with `Timeline`.
 - [ ] **12.3** _(stretch — needs HTML-capable description/comment storage)_ Swap the plain
diff --git a/dashboards/tracker-web/e2e/tracker.spec.ts b/dashboards/tracker-web/e2e/tracker.spec.ts
index ba30bc48..91621e87 100644
--- a/dashboards/tracker-web/e2e/tracker.spec.ts
+++ b/dashboards/tracker-web/e2e/tracker.spec.ts
@@ -309,7 +309,8 @@ test.describe('Tracker — Public Roadmap', () => {
   test('can toggle between board and list view', async ({ page }) => {
     await page.goto('/roadmap');
     await expect(page.getByRole('heading', { name: 'Dark mode toggle' })).toBeVisible();
-    await page.getByRole('button', { name: 'List', exact: true }).click();
+    // The view toggle is a shared SegmentedControl (role=radio), UX-12.1.
+    await page.getByRole('radio', { name: 'List', exact: true }).click();
     // List view still shows the items (rendered as rows, not a <table>)
     await expect(page.getByRole('heading', { name: 'Dark mode toggle' })).toBeVisible();
     await expect(page.getByRole('heading', { name: 'Export to CSV' })).toBeVisible();
diff --git a/dashboards/tracker-web/src/app/dashboard/board/page.tsx b/dashboards/tracker-web/src/app/dashboard/board/page.tsx
index b7ea9be9..44552f12 100644
--- a/dashboards/tracker-web/src/app/dashboard/board/page.tsx
+++ b/dashboards/tracker-web/src/app/dashboard/board/page.tsx
@@ -3,6 +3,12 @@
 import { useEffect, useState, useCallback } from 'react';
 import Link from 'next/link';
 import { PageHeader } from '@bytelyst/dashboard-components';
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipProvider,
+  TooltipTrigger,
+} from '@/components/ui/Primitives';
 import { useAuth } from '@/lib/auth-context';
 import { listItems, updateItemStatus, type TrackerItem } from '@/lib/tracker-client';
 
@@ -56,88 +62,95 @@ export default function BoardPage() {
   };
 
   return (
-    <div className="space-y-6">
-      <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>
+    <TooltipProvider>
+      <div className="space-y-6">
+        <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">
-          {error}
-        </div>
-      )}
+        {error && (
+          <div className="rounded-md bg-destructive/10 px-4 py-3 text-sm text-destructive">
+            {error}
+          </div>
+        )}
 
-      <div className="grid grid-cols-1 gap-4 md:grid-cols-4">
-        {COLUMNS.map(col => {
-          const colItems = items.filter(i => i.status === col.key);
-          return (
-            <div
-              key={col.key}
-              className={`rounded-xl border border-border border-t-4 ${col.color} bg-card p-3`}
-            >
-              <div className="mb-3 flex items-center justify-between">
-                <h3 className="text-sm font-semibold">{col.label}</h3>
-                <span className="rounded-full bg-muted px-2 py-0.5 text-xs font-medium text-muted-foreground">
-                  {colItems.length}
-                </span>
-              </div>
+        <div className="grid grid-cols-1 gap-4 md:grid-cols-4">
+          {COLUMNS.map(col => {
+            const colItems = items.filter(i => i.status === col.key);
+            return (
+              <div
+                key={col.key}
+                className={`rounded-xl border border-border border-t-4 ${col.color} bg-card p-3`}
+              >
+                <div className="mb-3 flex items-center justify-between">
+                  <h3 className="text-sm font-semibold">{col.label}</h3>
+                  <span className="rounded-full bg-muted px-2 py-0.5 text-xs font-medium text-muted-foreground">
+                    {colItems.length}
+                  </span>
+                </div>
 
-              <div className="space-y-2">
-                {colItems.map(item => (
-                  <div
-                    key={item.id}
-                    className="rounded-lg border border-border bg-background p-3 shadow-sm transition-shadow hover:shadow-md"
-                  >
-                    <div className="mb-1 flex items-center gap-2">
-                      <span
-                        className={`h-2 w-2 rounded-full ${TYPE_DOT[item.type] || 'bg-gray-400'}`}
-                      />
-                      <span className="text-xs text-muted-foreground">{item.type}</span>
-                      <span
-                        className={`ml-auto text-xs font-medium ${PRIORITY_LABEL[item.priority] || ''}`}
-                      >
-                        {item.priority}
-                      </span>
-                    </div>
-
-                    <Link
-                      href={`/dashboard/items/${item.id}`}
-                      className="text-sm font-medium leading-tight hover:text-primary hover:underline"
+                <div className="space-y-2">
+                  {colItems.map(item => (
+                    <div
+                      key={item.id}
+                      className="rounded-lg border border-border bg-background p-3 shadow-sm transition-shadow hover:shadow-md"
                     >
-                      {item.title}
-                    </Link>
-
-                    <div className="mt-2 flex items-center gap-3 text-xs text-muted-foreground">
-                      {item.voteCount > 0 && <span>{item.voteCount} votes</span>}
-                      {item.commentCount > 0 && <span>{item.commentCount} comments</span>}
-                    </div>
-
-                    {/* Quick status move */}
-                    <div className="mt-2 flex gap-1">
-                      {COLUMNS.filter(c => c.key !== item.status).map(c => (
-                        <button
-                          key={c.key}
-                          onClick={() => handleStatusChange(item.id, c.key)}
-                          className="rounded px-1.5 py-0.5 text-[10px] text-muted-foreground hover:bg-accent hover:text-accent-foreground"
-                          title={`Move to ${c.label}`}
+                      <div className="mb-1 flex items-center gap-2">
+                        <span
+                          className={`h-2 w-2 rounded-full ${TYPE_DOT[item.type] || 'bg-gray-400'}`}
+                        />
+                        <span className="text-xs text-muted-foreground">{item.type}</span>
+                        <span
+                          className={`ml-auto text-xs font-medium ${PRIORITY_LABEL[item.priority] || ''}`}
                         >
-                          → {c.label}
-                        </button>
-                      ))}
-                    </div>
-                  </div>
-                ))}
+                          {item.priority}
+                        </span>
+                      </div>
 
-                {colItems.length === 0 && (
-                  <div className="py-8 text-center text-xs text-muted-foreground">No items</div>
-                )}
+                      <Tooltip>
+                        <TooltipTrigger asChild>
+                          <Link
+                            href={`/dashboard/items/${item.id}`}
+                            className="block truncate text-sm font-medium leading-tight hover:text-primary hover:underline"
+                          >
+                            {item.title}
+                          </Link>
+                        </TooltipTrigger>
+                        <TooltipContent>{item.title}</TooltipContent>
+                      </Tooltip>
+
+                      <div className="mt-2 flex items-center gap-3 text-xs text-muted-foreground">
+                        {item.voteCount > 0 && <span>{item.voteCount} votes</span>}
+                        {item.commentCount > 0 && <span>{item.commentCount} comments</span>}
+                      </div>
+
+                      {/* Quick status move */}
+                      <div className="mt-2 flex gap-1">
+                        {COLUMNS.filter(c => c.key !== item.status).map(c => (
+                          <button
+                            key={c.key}
+                            onClick={() => handleStatusChange(item.id, c.key)}
+                            className="rounded px-1.5 py-0.5 text-[10px] text-muted-foreground hover:bg-accent hover:text-accent-foreground"
+                            title={`Move to ${c.label}`}
+                          >
+                            → {c.label}
+                          </button>
+                        ))}
+                      </div>
+                    </div>
+                  ))}
+
+                  {colItems.length === 0 && (
+                    <div className="py-8 text-center text-xs text-muted-foreground">No items</div>
+                  )}
+                </div>
               </div>
-            </div>
-          );
-        })}
+            );
+          })}
+        </div>
       </div>
-    </div>
+    </TooltipProvider>
   );
 }
diff --git a/dashboards/tracker-web/src/app/roadmap/page.tsx b/dashboards/tracker-web/src/app/roadmap/page.tsx
index 042a53a2..4d7b469c 100644
--- a/dashboards/tracker-web/src/app/roadmap/page.tsx
+++ b/dashboards/tracker-web/src/app/roadmap/page.tsx
@@ -1,6 +1,7 @@
 'use client';
 
 import { useEffect, useState, useCallback } from 'react';
+import { SegmentedControl } from '@/components/ui/Primitives';
 import {
   getRoadmapItems,
   getRoadmapStats,
@@ -264,20 +265,15 @@ export default function RoadmapPage() {
             <option value="bug">Bugs</option>
             <option value="task">Tasks</option>
           </select>
-          <div className="flex border border-slate-300 dark:border-slate-600 rounded-lg overflow-hidden">
-            <button
-              onClick={() => setView('board')}
-              className={`px-3 py-2 text-sm ${view === 'board' ? 'bg-blue-600 text-white' : 'bg-white dark:bg-slate-800 text-slate-600 dark:text-slate-300'}`}
-            >
-              Board
-            </button>
-            <button
-              onClick={() => setView('list')}
-              className={`px-3 py-2 text-sm ${view === 'list' ? 'bg-blue-600 text-white' : 'bg-white dark:bg-slate-800 text-slate-600 dark:text-slate-300'}`}
-            >
-              List
-            </button>
-          </div>
+          <SegmentedControl
+            aria-label="Roadmap view"
+            value={view}
+            onValueChange={v => setView(v as 'board' | 'list')}
+            options={[
+              { value: 'board', label: 'Board' },
+              { value: 'list', label: 'List' },
+            ]}
+          />
         </div>
 
         {loading ? (