Serve dashboard stats from daily_stats and default visit list to today.

Stop live-scanning page_visits on every dashboard load (including today) so the admin home stays fast; keep the live path only for channel filters and cache the result for 45s.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/Feature/PageVisitTest.php

@@ -698,4 +698,48 @@ class PageVisitTest extends TestCase
             ->assertJsonPath('data.1.stage', 'pe')
             ->assertJsonPath('data.1.stage_label', '权限提升');
     }
+
+    #[Test]
+    public function visits_data_defaults_to_today(): void
+    {
+        PageVisit::query()->create([
+            'channel_id' => self::CHANNEL,
+            'client_uid' => 'today-uid',
+            'os' => 'iOS',
+            'os_version' => '16.6',
+            'browser' => 'Safari',
+            'created_at' => now(),
+        ]);
+        PageVisit::query()->create([
+            'channel_id' => self::CHANNEL,
+            'client_uid' => 'old-uid',
+            'os' => 'iOS',
+            'os_version' => '16.6',
+            'browser' => 'Safari',
+            'created_at' => now()->subDays(2),
+        ]);
+
+        $admin = Admin::query()->create(['username' => 'admin', 'password' => 'admin123']);
+        $payload = $this->actingAs($admin, 'admin')
+            ->getJson(route('admin.visits.data'))
+            ->assertOk()
+            ->assertJsonPath('code', 0)
+            ->assertJsonPath('count', 1)
+            ->json('data');
+
+        $this->assertCount(1, $payload);
+        $this->assertSame('today-uid', $payload[0]['client_uid']);
+    }
+
+    #[Test]
+    public function visits_page_defaults_range_to_today(): void
+    {
+        $admin = Admin::query()->create(['username' => 'admin', 'password' => 'admin123']);
+        $this->actingAs($admin, 'admin')
+            ->get(route('admin.visits.index'))
+            ->assertOk()
+            ->assertSee('value="today" selected', false)
+            ->assertSee("range: 'today'", false)
+            ->assertDontSee("range: '30d'", false);
+    }
 }