feat: Implement API V3 Testing Dashboard and Security Hardening

- Added comprehensive System Testing dashboard with live V3 trace tool.
- Implemented Section 2D 'Fail-Fast' protocol in get_object helper.
- Added reactive JWT synchronization in root layout to ensure V3 consistency.
- Resolved Tailwind 4 @apply compilation errors in testing page.

src/routes/+layout.svelte

@@ -681,6 +681,17 @@
         }
     });
 
+    // Sync JWT from local storage to API config for V3 endpoints
+    $effect(() => {
+        if ($ae_api.jwt !== $ae_loc.jwt) {
+            if (log_lvl) console.log('ROOT: Syncing JWT to API config');
+            $ae_api = {
+                ...$ae_api,
+                jwt: $ae_loc.jwt
+            };
+        }
+    });
+
     $effect(() => {
         if (browser) {
             const interval = setInterval(() => {