Migrate to laravel ai sdk (#181)

Also
* upgrade to livewire 4
* replace rappsoft tables with filament

database/migrations/2026_02_27_032405_create_agent_conversations_table.php

@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Models\User;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+use Laravel\Ai\Migrations\AiMigration;
+
+return new class extends AiMigration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('agent_conversations', function (Blueprint $table) {
+            $table->string('id', 36)->primary();
+            $table->foreignIdFor(User::class, 'user_id')->constrained()->onDelete('cascade')->nullable();
+            $table->string('title');
+            $table->timestamps();
+
+            $table->index(['user_id', 'updated_at']);
+        });
+
+        Schema::create('agent_conversation_messages', function (Blueprint $table) {
+            $table->string('id', 36)->primary();
+            $table->string('conversation_id', 36)->index();
+            $table->foreignIdFor(User::class, 'user_id')->constrained()->onDelete('cascade')->nullable();
+            $table->string('agent');
+            $table->string('role', 25);
+            $table->text('content');
+            $table->text('attachments');
+            $table->text('tool_calls');
+            $table->text('tool_results');
+            $table->text('usage');
+            $table->text('meta');
+            $table->timestamps();
+
+            $table->index(['conversation_id', 'user_id', 'updated_at'], 'conversation_index');
+            $table->index(['user_id']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('agent_conversations');
+        Schema::dropIfExists('agent_conversation_messages');
+    }
+};

database/migrations/2026_02_27_032447_add_chatable_to_agent_conversations_table.php

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+<?php
+
+declare(strict_types=1);
+
+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('agent_conversations', function (Blueprint $table) {
+            $table->nullableUuidMorphs('chatable');
+            $table->unique(['user_id', 'chatable_type', 'chatable_id'], 'chat_with_unique');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('agent_conversations', function (Blueprint $table) {
+            $table->dropUnique('chat_with_unique');
+            $table->dropMorphs('chatable');
+        });
+    }
+};