feat: implement Phase 7 (Course Player v2, Furigana, XP System, Integrated Vocab)

database/migrations/2026_01_23_111012_create_lesson_vocabulary_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::create('lesson_vocabulary', function (Blueprint $table) {
+            $table->id();
+            $table->foreignUuid('lesson_id')->constrained()->cascadeOnDelete();
+            $table->foreignUuid('vocabulary_id')->constrained()->cascadeOnDelete();
+            $table->unique(['lesson_id', 'vocabulary_id']);
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('lesson_vocabulary');
+    }
+};