chore: update CHANGELOG.md to clarify improvements in visitor tracking accuracy, ensuring unique identifiers for analytics during high traffic periods

CHANGELOG.md

@@ -21,7 +21,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 - **Smarter data fetching.** Your dashboard now automatically prevents duplicate requests when multiple components ask for the same data at the same time. It also briefly caches recent responses, so switching between pages feels instant while still keeping everything up to date. This reduces server load and makes the app feel snappier.
 - **Smarter dashboard updates.** Your dashboard now knows when you're actively viewing it versus when it's in the background. When you switch to another tab, we intelligently slow down data refreshes to save resources, then instantly catch up when you return. This keeps your analytics current without putting unnecessary load on the system.
 - **Instant real-time visitor counts.** Your dashboard's "current visitors" counter now updates lightning-fast using an optimized tracking system. Instead of scanning your entire database, we maintain a live session index that shows active visitors in milliseconds—even when thousands of people are browsing your sites simultaneously.
-- **More accurate visitor tracking.** We've upgraded how we identify unique visitors to ensure your analytics are always precise, even during the busiest traffic spikes. Every visitor now gets a truly unique identifier that never overlaps with others, eliminating rare edge cases where visitor counts could be slightly off.
 - **Faster event tracking.** Your analytics data is now captured instantly without slowing down your website. We've switched to asynchronous processing that collects events in batches of 100, so your visitors' page views and interactions are recorded with zero impact on their browsing experience, even during traffic spikes.
 - **Faster dashboard loading.** Your site analytics now load almost instantly, even during busy periods. Behind the scenes, we've added intelligent caching that remembers your dashboard data for 30 seconds and refreshes it automatically in the background. Real-time visitor counts are updated every 5 seconds so you always see current activity without waiting.
 - **Better data management for long-term performance.** We've restructured how your analytics data is stored so the app stays fast even as you collect months of data. Old data is now automatically organized by month and cleaned up efficiently based on your retention settings, keeping everything running smoothly no matter how much traffic you get.
@@ -36,6 +35,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 - **Sign in after inactivity.** Clicking "Sign in" after a period of inactivity no longer does nothing. Previously, stale refresh cookies caused the middleware to redirect away from the login page; now only a valid access token triggers that redirect, so you can complete OAuth sign-in when your session has expired.
 - **Frequent re-login.** You no longer have to sign in multiple times a day. When the access token expires after 15 minutes of inactivity, the app now automatically refreshes it using your refresh token on the next page load, so you stay logged in for up to 30 days.
 - **2FA disable now requires password confirmation.** Disabling 2FA sends the derived password to the backend for verification. This prevents an attacker with a hijacked session from stripping 2FA.
+- **More accurate visitor tracking.** We fixed rare edge cases where visitor counts could be slightly off during busy traffic spikes. Previously, the timestamp-based session ID generation could occasionally create overlapping identifiers. Every visitor now gets a truly unique UUID that never overlaps with others, ensuring your analytics are always precise.
 
 ## [0.11.1-alpha] - 2026-02-23