Enhance candidates management: add city field, drag-and-drop ranking persistence, AI analysis popover, and CV preview

database/migrations/2026_04_22_110459_add_sort_order_to_candidates_table.php

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+<?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->integer('sort_order')->default(0)->after('is_selected');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('candidates', function (Blueprint $table) {
+            $table->dropColumn('sort_order');
+        });
+    }
+};

database/migrations/2026_04_22_112940_add_city_to_candidates_table.php

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+<?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->string('city')->nullable()->after('linkedin_url');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('candidates', function (Blueprint $table) {
+            $table->dropColumn('city');
+        });
+    }
+};