Enable analytics tracking in dev and prod

Remove dev environment check — tracking runs everywhere.
Data won't mix since each environment has its own database.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

assets/modules/analytics.js

@@ -86,7 +86,7 @@ async function trackPageView(visitor) {
 
 export async function initAnalytics() {
     const keyB64 = document.body.dataset.k
-    if (!keyB64 || document.body.dataset.env === 'dev') return
+    if (!keyB64) return
 
     try {
         encKey = await importKey(keyB64)