Add studio-defined account-registration questions

Studio admins can now define registration questions that every new student
answers as a required second step during signup, with each student's answers
shown under a "Registration Information" section in the admin.

Extends the existing Registration domain: us_questions gains a scope column
(offering | account) and a nullable offering_id, and account answers reuse
us_question_answers with registration_type = 'account'. Authoring reuses the
Offerings -> Questions page via an "Account signup" scope (studio-admin only).
The registration form becomes two steps (progressive enhancement via
assets/js/register.js; works without JS); required answers are validated before
the account is created and apply to all signup paths (invite, group link,
self-approval). StudentHistory::registrationInfo() powers the admin section.

Bumps the plugin version to 1.1.0 so dbDelta runs the schema migration.

Closes #90

Co-Authored-By: Claude Opus 4.8 <[email protected]>

tests/Unit/Auth/RegistrationPageTest.php

@@ -15,6 +15,10 @@ use Unsupervised\Schedular\Policy\Policy;
 use Unsupervised\Schedular\Policy\PolicyRepository;
 use Unsupervised\Schedular\Policy\PolicyVersion;
 use Unsupervised\Schedular\Policy\PolicyVersionRepository;
+use Unsupervised\Schedular\Registration\Answer;
+use Unsupervised\Schedular\Registration\AnswerRepository;
+use Unsupervised\Schedular\Registration\Question;
+use Unsupervised\Schedular\Registration\QuestionRepository;
 use Unsupervised\Schedular\Tests\Unit\TestCase;
 
 class RegistrationPageTest extends TestCase
@@ -28,18 +32,26 @@ class RegistrationPageTest extends TestCase
 
         Functions\when('wp_unslash')->alias(static fn ($v) => $v);
         Functions\when('sanitize_text_field')->alias(static fn ($v) => $v);
+        Functions\when('sanitize_textarea_field')->alias(static fn ($v) => $v);
         Functions\when('sanitize_email')->alias(static fn ($v) => $v);
+        Functions\when('absint')->alias(static fn ($v) => (int) $v);
         Functions\when('current_time')->justReturn('2024-01-01 00:00:00');
 
-        $invites  = Mockery::mock(InviteRepository::class);
-        $policies = Mockery::mock(PolicyRepository::class);
+        $invites   = Mockery::mock(InviteRepository::class);
+        $policies  = Mockery::mock(PolicyRepository::class);
+        $questions = Mockery::mock(QuestionRepository::class);
+        $answers   = Mockery::mock(AnswerRepository::class);
         $policies->shouldReceive('findForScope')->andReturn([])->byDefault();
+        $questions->shouldReceive('findByScope')->andReturn([])->byDefault();
+        $answers->shouldReceive('insert')->andReturn(1)->byDefault();
 
         $this->ctx = [
-            'invites'  => $invites,
-            'policies' => $policies,
-            'mailer'   => Mockery::mock(RegistrationMailer::class),
-            'settings' => Mockery::mock(StudioSettings::class),
+            'invites'   => $invites,
+            'policies'  => $policies,
+            'questions' => $questions,
+            'answers'   => $answers,
+            'mailer'    => Mockery::mock(RegistrationMailer::class),
+            'settings'  => Mockery::mock(StudioSettings::class),
         ];
 
         $this->ctx['page'] = new RegistrationPage(
@@ -49,6 +61,8 @@ class RegistrationPageTest extends TestCase
             Mockery::mock(AcceptanceRepository::class),
             $this->ctx['settings'],
             $this->ctx['mailer'],
+            $questions,
+            $answers,
         );
 
         $_POST = [];
@@ -309,4 +323,58 @@ class RegistrationPageTest extends TestCase
         self::assertNotSame('confirm', $result);
         self::assertNotSame('', $result);
     }
+
+    public function testRejectsWhenARequiredAccountQuestionIsUnanswered(): void
+    {
+        $_POST = [ 'password' => 'password123', 'display_name' => 'Ada', 'email' => '[email protected]' ];
+
+        Functions\when('is_email')->justReturn(true);
+
+        $question = new Question(null, 'Emergency contact', isRequired: true, scope: Question::SCOPE_ACCOUNT, id: 5);
+        $this->ctx['questions']->shouldReceive('findByScope')->with(Question::SCOPE_ACCOUNT, Mockery::any())->andReturn([$question]);
+
+        // A missing required answer must be caught before any account is created.
+        Functions\expect('wp_insert_user')->never();
+        $this->ctx['answers']->shouldReceive('insert')->never();
+
+        $result = $this->submit(null, true);
+
+        self::assertNotSame('confirm', $result);
+        self::assertNotSame('', $result);
+    }
+
+    public function testRecordsAccountAnswersOnSuccess(): void
+    {
+        $_POST = [
+            'password'     => 'password123',
+            'display_name' => 'Ada',
+            'us_answers'   => [ '5' => 'By a friend' ],
+        ];
+
+        Functions\when('email_exists')->justReturn(false);
+        Functions\when('wp_insert_user')->justReturn(42);
+        Functions\when('is_wp_error')->justReturn(false);
+        Functions\expect('wp_set_current_user')->once();
+        Functions\expect('wp_set_auth_cookie')->once();
+        $this->ctx['invites']->shouldReceive('markAccepted')->once();
+
+        $question = new Question(null, 'How did you hear about us?', isRequired: true, scope: Question::SCOPE_ACCOUNT, id: 5);
+        $this->ctx['questions']->shouldReceive('findByScope')->with(Question::SCOPE_ACCOUNT, Mockery::any())->andReturn([$question]);
+
+        // The answer is written against the new user (account scope).
+        $this->ctx['answers']->shouldReceive('insert')
+            ->once()
+            ->with(Mockery::on(static function (Answer $answer): bool {
+                return $answer->registrationType === Answer::REG_ACCOUNT
+                    && $answer->registrationId === 42
+                    && $answer->studentId === 42
+                    && $answer->questionId === 5
+                    && $answer->answerValue === 'By a friend';
+            }))
+            ->andReturn(1);
+
+        $invite = new Invite(email: '[email protected]', token: 'hash');
+
+        self::assertSame('invite', $this->submit($invite, false));
+    }
 }