feat: 데모 URL 관리 시스템 마이그레이션 및 시더 추가

- users 테이블에 role, is_active 필드 추가
- prospects 테이블 생성 (업체 정보)
- demo_links 테이블 생성 (토큰 관리)
- DemoSystemSeeder 추가 (Ops/Sales 계정, 샘플 데이터)

database/migrations/2025_10_14_135811_add_role_and_is_active_to_users_table.php

@@ -0,0 +1,29 @@
+<?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('users', function (Blueprint $table) {
+            $table->enum('role', ['sales', 'ops'])->default('sales')->after('email');
+            $table->boolean('is_active')->default(true)->after('role');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->dropColumn(['role', 'is_active']);
+        });
+    }
+};

database/migrations/2025_10_14_135811_create_prospects_table.php

@@ -0,0 +1,35 @@
+<?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::create('prospects', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('sales_user_id')->constrained('users')->onDelete('cascade');
+            $table->string('company_name', 100);
+            $table->string('contact_person', 100)->nullable();
+            $table->string('email', 100)->nullable();
+            $table->string('phone', 20)->nullable();
+            $table->text('notes')->nullable();
+            $table->timestamps();
+
+            $table->index('sales_user_id');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('prospects');
+    }
+};

database/migrations/2025_10_14_135812_create_demo_links_table.php

@@ -0,0 +1,37 @@
+<?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::create('demo_links', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('prospect_id')->constrained('prospects')->onDelete('cascade');
+            $table->foreignId('created_by')->constrained('users')->onDelete('cascade');
+            $table->string('token', 64)->unique();
+            $table->enum('status', ['active', 'expired', 'revoked'])->default('active');
+            $table->timestamp('expires_at');
+            $table->unsignedInteger('visit_count')->default(0);
+            $table->timestamps();
+
+            $table->index(['token', 'status']);
+            $table->index('prospect_id');
+            $table->index('created_by');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('demo_links');
+    }
+};