Fix incorrect SPA conversion instructions in CLAUDE.dist.md

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

docs/CLAUDE.dist.md

@@ -411,21 +411,17 @@ class Feature_Index_Action extends Spa_Action {
 </Define:Feature_Index_Action>
 ```
 
-**4. Update Controller**
+**4. Update Controller - Remove server-side route entirely:**
 ```php
-// Change #[Route] to #[SPA]
-#[SPA]
-public static function index(Request $request, array $params = []) {
-    return rsx_view(SPA);
-}
-
-// Add Ajax endpoints
+// Remove #[Route] method completely. Add Ajax endpoints:
 #[Ajax_Endpoint]
 public static function fetch_items(Request $request, array $params = []): array {
     return ['items' => Feature_Model::all()];
 }
 ```
 
+**CRITICAL**: Do NOT add `#[SPA]` to feature controllers. The `#[SPA]` attribute only exists in the bootstrap controller (e.g., `Frontend_Spa_Controller::index`). Feature controllers should only contain `#[Ajax_Endpoint]` methods for data fetching.
+
 **5. Update Route References**
 
 **Search entire codebase for old route references:**