fix: reveal mode not working when already ON at page load

If reveal mode was saved as ON in settings, the page loaded with
revealMode=true and prevRevealMode=true. The checkRevealToggle
function only fires on transitions (off→on or on→off), so the
reveal interval was never started. Added initialization check
that starts the reveal interval immediately if revealMode is
already true at page load.

https://claude.ai/code/session_01KF4i7Ra7zCEDskxDBaNtcT

src/content/content.js

@@ -1715,6 +1715,14 @@
     prevRevealMode = settings.revealMode;
   }
 
+  // If reveal mode was already ON at page load, start the interval immediately
+  if (settings.revealMode) {
+    console.log('[Silent Send] Reveal mode ON (from saved settings)');
+    revealInterval = setInterval(() => {
+      if (settings.revealMode) revealAllResponses();
+    }, 2000);
+  }
+
   // Hook into config updates to detect reveal toggle
   window.addEventListener('message', (event) => {
     if (event.source !== window) return;