units,lesson as standalone

models/task/task_completion.mdl.js

@@ -42,13 +42,31 @@ const TaskCompletion = sequelize.define('TaskCompletion', {
         comment: 'Optional note the user attaches when submitting.',
         order: 1,
     },
+    response_text: {
+        type: DataTypes.TEXT,
+        allowNull: true,
+        comment: 'The learner\'s free-text answer, for submit_text requirements.',
+        order: 1.5,
+    },
     submitted_at: {
         type: DataTypes.DATE,
         defaultValue: DataTypes.NOW,
         allowNull: false,
         order: 2,
     },
- 
+
+    // ── Review workflow (requires_review requirements only) ──────────────────
+    status: {
+        type: DataTypes.ENUM('submitted', 'approved', 'rejected'),
+        allowNull: false,
+        defaultValue: 'submitted',
+        order: 2.1,
+        filterable: true,
+    },
+    reviewed_by: { type: DataTypes.BIGINT, allowNull: true, order: 2.2 },
+    reviewed_at: { type: DataTypes.DATE, allowNull: true, order: 2.3 },
+    review_note: { type: DataTypes.TEXT, allowNull: true, comment: 'Optional note the admin leaves when approving/rejecting.', order: 2.4 },
+
     // ── Audit trails ────────────────────────────────────────────────────────
     createdBy: { type: DataTypes.BIGINT, allowNull: true, order: 6 },
     updatedBy: { type: DataTypes.BIGINT, allowNull: true, order: 7 },