feat: Initial commit for Saqel Platform architecture, backend, Docker, and documentation

backend/bootstrap/app.php

@@ -0,0 +1,25 @@
+<?php
+
+use App\Http\Middleware\ApiTokenAuth;
+use Illuminate\Foundation\Application;
+use Illuminate\Foundation\Configuration\Exceptions;
+use Illuminate\Foundation\Configuration\Middleware;
+use Illuminate\Http\Request;
+
+return Application::configure(basePath: dirname(__DIR__))
+    ->withRouting(
+        web: __DIR__.'/../routes/web.php',
+        api: __DIR__.'/../routes/api.php',
+        commands: __DIR__.'/../routes/console.php',
+        health: '/up',
+    )
+    ->withMiddleware(function (Middleware $middleware): void {
+        $middleware->alias([
+            'api.token' => ApiTokenAuth::class,
+        ]);
+    })
+    ->withExceptions(function (Exceptions $exceptions): void {
+        $exceptions->shouldRenderJsonWhen(
+            fn (Request $request) => $request->is('api/*') || $request->expectsJson(),
+        );
+    })->create();

backend/bootstrap/cache/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

backend/bootstrap/providers.php

@@ -0,0 +1,7 @@
+<?php
+
+use App\Providers\AppServiceProvider;
+
+return [
+    AppServiceProvider::class,
+];