Ignore own row when validating email update uniqueness

app/Http/Controllers/Settings/HomeSettings.php

@@ -172,7 +172,9 @@ trait HomeSettings
     public function emailUpdate(Request $request)
     {
         $this->validate($request, [
-            'email' => 'required|email|unique:users,email',
+            // Ignore the user's own row so an unchanged (pre-filled) submission
+            // is a no-op; collisions with other accounts still fail.
+            'email' => 'required|email|unique:users,email,'.$request->user()->id,
         ]);
         $changes = false;
         $email = $request->input('email');

tests/Feature/Settings/EmailUpdateTest.php

@@ -0,0 +1,56 @@
+<?php
+
+use App\Models\User;
+use Illuminate\Foundation\Testing\LazilyRefreshDatabase;
+
+uses(LazilyRefreshDatabase::class);
+
+/*
+|--------------------------------------------------------------------------
+| POST /settings/email
+|--------------------------------------------------------------------------
+|
+| The email form is pre-filled with the user's current address, so submitting
+| unchanged must be a no-op (the unique rule must ignore the user's own row),
+| while a genuinely new email still persists and collisions with other
+| accounts still fail.
+|
+*/
+
+it('accepts an unchanged email submission as a no-op', function () {
+    $user = User::factory()->create();
+    $user->refresh();
+
+    $this->actingAs($user)
+        ->withSession(['auth.password_confirmed_at' => time()])
+        ->post('/settings/email', ['email' => $user->email])
+        ->assertRedirect('/settings/email')
+        ->assertSessionHasNoErrors();
+});
+
+it('persists a genuinely new email', function () {
+    $user = User::factory()->create();
+    $user->refresh();
+
+    $newEmail = 'brand.new.'.uniqid().'@example.com';
+
+    $this->actingAs($user)
+        ->withSession(['auth.password_confirmed_at' => time()])
+        ->post('/settings/email', ['email' => $newEmail])
+        ->assertSessionHasNoErrors();
+
+    expect($user->fresh()->email)->toBe($newEmail);
+});
+
+it('rejects an email already used by another account', function () {
+    $other = User::factory()->create(['email' => 'taken@example.com']);
+    $user = User::factory()->create();
+    $user->refresh();
+
+    $this->actingAs($user)
+        ->withSession(['auth.password_confirmed_at' => time()])
+        ->post('/settings/email', ['email' => 'taken@example.com'])
+        ->assertSessionHasErrors('email');
+
+    expect($user->fresh()->email)->not->toBe('taken@example.com');
+});