feat(api): implement javascript-first architecture for cache compatibility

- Add REST endpoint GET /roi-theme/v1/adsense-placement/visibility
- Add Domain layer: UserContext, VisibilityDecision, AdsenseSettings VOs
- Add Application layer: CheckAdsenseVisibilityUseCase
- Add Infrastructure: AdsenseVisibilityChecker, Controller, Enqueuer
- Add JavaScript controller with localStorage caching
- Add test plan for production validation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Public/AdsensePlacement/Infrastructure/Providers/AdsenseJavascriptFirstServiceProvider.php

@@ -0,0 +1,113 @@
+<?php
+declare(strict_types=1);
+
+namespace ROITheme\Public\AdsensePlacement\Infrastructure\Providers;
+
+use ROITheme\Shared\Infrastructure\Di\DIContainer;
+use ROITheme\Public\AdsensePlacement\Domain\Contracts\AdsenseVisibilityCheckerInterface;
+use ROITheme\Public\AdsensePlacement\Infrastructure\Services\AdsenseVisibilityChecker;
+use ROITheme\Public\AdsensePlacement\Application\UseCases\CheckAdsenseVisibilityUseCase;
+use ROITheme\Public\AdsensePlacement\Infrastructure\Api\WordPress\AdsenseVisibilityController;
+use ROITheme\Public\AdsensePlacement\Infrastructure\Ui\AdsenseAssetsEnqueuer;
+
+/**
+ * Service Provider para el sistema JavaScript-First de AdSense.
+ *
+ * Registra todas las dependencias y hooks necesarios.
+ *
+ * @package ROITheme\Public\AdsensePlacement\Infrastructure\Providers
+ */
+final class AdsenseJavascriptFirstServiceProvider
+{
+    private ?AdsenseVisibilityCheckerInterface $visibilityChecker = null;
+    private ?CheckAdsenseVisibilityUseCase $useCase = null;
+    private ?AdsenseVisibilityController $controller = null;
+    private ?AdsenseAssetsEnqueuer $enqueuer = null;
+
+    public function __construct(
+        private DIContainer $container
+    ) {
+    }
+
+    /**
+     * Registra los servicios en el contenedor.
+     *
+     * Llamar en after_setup_theme.
+     */
+    public function register(): void
+    {
+        // Los servicios se crean lazy en boot()
+    }
+
+    /**
+     * Inicializa los hooks de WordPress.
+     *
+     * Llamar en init.
+     */
+    public function boot(): void
+    {
+        // Registrar REST API endpoint
+        add_action('rest_api_init', function(): void {
+            $this->getController()->registerRoutes();
+        });
+
+        // Registrar enqueue de assets
+        $this->getEnqueuer()->register();
+    }
+
+    /**
+     * Obtiene el checker de visibilidad (lazy initialization).
+     */
+    public function getVisibilityChecker(): AdsenseVisibilityCheckerInterface
+    {
+        if ($this->visibilityChecker === null) {
+            $this->visibilityChecker = new AdsenseVisibilityChecker(
+                $this->container->getComponentSettingsRepository()
+            );
+        }
+
+        return $this->visibilityChecker;
+    }
+
+    /**
+     * Obtiene el use case (lazy initialization).
+     */
+    public function getUseCase(): CheckAdsenseVisibilityUseCase
+    {
+        if ($this->useCase === null) {
+            $this->useCase = new CheckAdsenseVisibilityUseCase(
+                $this->getVisibilityChecker()
+            );
+        }
+
+        return $this->useCase;
+    }
+
+    /**
+     * Obtiene el controller REST (lazy initialization).
+     */
+    public function getController(): AdsenseVisibilityController
+    {
+        if ($this->controller === null) {
+            $this->controller = new AdsenseVisibilityController(
+                $this->getUseCase()
+            );
+        }
+
+        return $this->controller;
+    }
+
+    /**
+     * Obtiene el enqueuer de assets (lazy initialization).
+     */
+    public function getEnqueuer(): AdsenseAssetsEnqueuer
+    {
+        if ($this->enqueuer === null) {
+            $this->enqueuer = new AdsenseAssetsEnqueuer(
+                $this->container->getComponentSettingsRepository()
+            );
+        }
+
+        return $this->enqueuer;
+    }
+}