diff --git a/tests/Feature/Admin/MemberNoteTest.php b/tests/Feature/Admin/MemberNoteTest.php
index 459347c..075fafb 100644
--- a/tests/Feature/Admin/MemberNoteTest.php
+++ b/tests/Feature/Admin/MemberNoteTest.php
@@ -202,4 +202,87 @@ class MemberNoteTest extends TestCase
         $this->assertEquals('Middle note', $notes[1]['content']);
         $this->assertEquals('Oldest note', $notes[2]['content']);
     }
+
+    public function test_notes_index_returns_author_name_and_created_at(): void
+    {
+        $admin = $this->createAdminUser();
+        $otherAdmin = User::factory()->create(['name' => '測試管理員']);
+        $otherAdmin->assignRole('admin');
+        $member = Member::factory()->create();
+
+        Note::factory()->forMember($member)->byAuthor($admin)->create(['content' => 'Note by admin']);
+        Note::factory()->forMember($member)->byAuthor($otherAdmin)->create(['content' => 'Note by other']);
+
+        $response = $this->actingAs($admin)->getJson(
+            route('admin.members.notes.index', $member)
+        );
+
+        $response->assertStatus(200);
+        $notes = $response->json('notes');
+
+        // Each note must have author.name and created_at for display
+        foreach ($notes as $note) {
+            $this->assertNotEmpty($note['author']['name']);
+            $this->assertNotEmpty($note['created_at']);
+        }
+
+        // Verify different authors are represented
+        $authorNames = array_column(array_column($notes, 'author'), 'name');
+        $this->assertContains($admin->name, $authorNames);
+        $this->assertContains('測試管理員', $authorNames);
+    }
+
+    public function test_notes_index_returns_empty_array_for_member_with_no_notes(): void
+    {
+        $admin = $this->createAdminUser();
+        $member = Member::factory()->create();
+
+        $response = $this->actingAs($admin)->getJson(
+            route('admin.members.notes.index', $member)
+        );
+
+        $response->assertStatus(200);
+        $response->assertJson(['notes' => []]);
+        $this->assertCount(0, $response->json('notes'));
+    }
+
+    public function test_member_list_renders_history_panel_directives(): void
+    {
+        $admin = $this->createAdminUser();
+        Member::factory()->create();
+
+        $response = $this->actingAs($admin)->get(route('admin.members.index'));
+
+        $response->assertStatus(200);
+        $response->assertSee('toggleHistory', false);
+        $response->assertSee('historyOpen', false);
+        $response->assertSee('x-collapse', false);
+        $response->assertSee('searchQuery', false);
+        $response->assertSee('filteredNotes', false);
+        $response->assertSee('尚無備註', false);
+        $response->assertSee('aria-expanded', false);
+        $response->assertSee('notes-panel-', false);
+    }
+
+    public function test_store_note_returns_note_with_author_for_cache_sync(): void
+    {
+        $admin = $this->createAdminUser();
+        $member = Member::factory()->create();
+
+        $response = $this->actingAs($admin)->postJson(
+            route('admin.members.notes.store', $member),
+            ['content' => 'Cache sync test note']
+        );
+
+        $response->assertStatus(201);
+        $note = $response->json('note');
+
+        // All fields needed for frontend cache sync
+        $this->assertArrayHasKey('id', $note);
+        $this->assertArrayHasKey('content', $note);
+        $this->assertArrayHasKey('created_at', $note);
+        $this->assertArrayHasKey('author', $note);
+        $this->assertArrayHasKey('name', $note['author']);
+        $this->assertEquals($admin->name, $note['author']['name']);
+    }
 }