Fix async lifecycle ordering, add _spa_init boot phase, update to jqhtml _load_only/_load_render_only flags

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

app/RSpade/Integrations/Jqhtml/Jqhtml_Integration.js

@@ -133,10 +133,9 @@ class Jqhtml_Integration {
      * - Recursive nested component handling
      * - Promise tracking for async components
      */
-    static _on_framework_modules_init() {
-        jqhtml.boot().then(() => {
-            Rsx.trigger('jqhtml_ready');
-        });
+    static async _on_framework_modules_init() {
+        await jqhtml.boot();
+        Rsx.trigger('jqhtml_ready');
     }
 }