feat: implement intern authentication and secure document dashboard for internship applications

database/migrations/2026_05_26_150000_add_intern_auth_fields_to_career_applications_table.php

@@ -0,0 +1,30 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('career_applications', function (Blueprint $table) {
+            $table->string('username')->nullable()->unique()->after('status');
+            $table->string('password')->nullable()->after('username');
+            $table->string('signed_internship_form_path')->nullable()->after('password');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('career_applications', function (Blueprint $table) {
+            $table->dropColumn(['username', 'password', 'signed_internship_form_path']);
+        });
+    }
+};