AI Analysis: persist analysis on candidate profile

database/migrations/2026_03_22_213122_add_ai_analysis_to_candidates_table.php

@@ -0,0 +1,28 @@
+<?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('candidates', function (Blueprint $table) {
+            $table->json('ai_analysis')->nullable()->after('interview_score');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('candidates', function (Blueprint $table) {
+            $table->dropColumn('ai_analysis');
+        });
+    }
+};