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>

Schemas/adsense-placement.json

@@ -1,6 +1,6 @@
 {
   "component_name": "adsense-placement",
-  "version": "1.5.0",
+  "version": "1.6.0",
   "description": "Control de AdSense y Google Analytics - Con In-Content Ads Avanzado",
   "groups": {
     "visibility": {
@@ -282,6 +282,13 @@
       "label": "Ubicaciones en Posts",
       "priority": 70,
       "fields": {
+        "javascript_first_mode": {
+          "type": "boolean",
+          "label": "JavaScript-First Mode (Cache Compatible)",
+          "default": false,
+          "editable": true,
+          "description": "Mueve decisiones de visibilidad de PHP a JavaScript para compatibilidad con cache de pagina. Permite personalizacion por usuario en sitios cacheados."
+        },
         "post_top_enabled": {
           "type": "boolean",
           "label": "Despues de Featured Image",