add assessment feature

app/Models/AssessmentFormModel.php

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+<?php
+
+namespace App\Models;
+
+use CodeIgniter\Model;
+
+class AssessmentFormModel extends Model
+{
+    protected $table = 'assessment_forms';
+    protected $primaryKey = 'id';
+    protected $returnType = 'array';
+    protected $allowedFields = ['name', 'pool_id', 'school_year', 'created_by', 'status', 'education_committee_note'];
+    protected $useTimestamps = true;
+}

app/Models/AssessmentFormQuestionModel.php

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+<?php
+
+namespace App\Models;
+
+use CodeIgniter\Model;
+
+class AssessmentFormQuestionModel extends Model
+{
+    protected $table = 'assessment_form_questions';
+    // CI's Model API accepts one primary-key field; the database enforces the
+    // actual composite key (form_id, question_id).
+    protected $primaryKey = 'form_id';
+    protected $useAutoIncrement = false;
+    protected $returnType = 'array';
+    protected $allowedFields = ['form_id', 'question_id', 'order_index'];
+    protected $useTimestamps = false;
+}

app/Models/AssessmentQuestionModel.php

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+<?php
+
+namespace App\Models;
+
+use CodeIgniter\Model;
+
+class AssessmentQuestionModel extends Model
+{
+    protected $table = 'assessment_questions';
+    protected $primaryKey = 'id';
+    protected $returnType = 'array';
+    protected $allowedFields = ['pool_id', 'type', 'text', 'options', 'correct_answer', 'points', 'order_index'];
+    protected $useTimestamps = true;
+}

app/Models/QuestionPoolModel.php

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+<?php
+
+namespace App\Models;
+
+use CodeIgniter\Model;
+
+class QuestionPoolModel extends Model
+{
+    protected $table = 'question_pools';
+    protected $primaryKey = 'id';
+    protected $returnType = 'array';
+    protected $allowedFields = ['name', 'subject_tag', 'created_by'];
+    protected $useTimestamps = true;
+}

app/Models/StudentAnswerModel.php

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+<?php
+
+namespace App\Models;
+
+use CodeIgniter\Model;
+
+class StudentAnswerModel extends Model
+{
+    protected $table = 'student_answers';
+    protected $primaryKey = 'id';
+    protected $returnType = 'array';
+    protected $allowedFields = ['student_assessment_id', 'question_id', 'answer_value', 'is_correct', 'points_awarded'];
+    protected $useTimestamps = true;
+}

app/Models/StudentAssessmentModel.php

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+<?php
+
+namespace App\Models;
+
+use CodeIgniter\Model;
+
+class StudentAssessmentModel extends Model
+{
+    protected $table = 'student_assessments';
+    protected $primaryKey = 'id';
+    protected $returnType = 'array';
+    protected $allowedFields = ['form_id', 'student_id', 'status', 'assigned_at', 'started_at', 'submitted_at', 'graded_at', 'graded_by', 'score', 'education_committee_note'];
+    protected $useTimestamps = true;
+}