Images can be uploaded with alt text

This means associating images to notes via a pivot table, we also finish
off the migration of medai from S3.

database/migrations/2025_12_31_110617_create_media_note_pivot_table.php

@@ -0,0 +1,33 @@
+<?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('media_note', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('note_id')->constrained()->onDelete('cascade');
+            $table->foreignId('media_id')->constrained('media_endpoint')->onDelete('cascade');
+            $table->text('alt_text')->nullable();
+            $table->integer('order')->default(0);
+            $table->timestamps();
+
+            $table->unique(['note_id', 'media_id']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('media_note');
+    }
+};