v6.2.13

Fixed

• Push notifications requiring re-enable — Push subscriptions can expire (browser push service decides when), causing notifications to silently stop working. The viewer now auto-resubscribes on page load when the browser permission is still granted but the subscription was lost. A localStorage flag remembers the user's opt-in preference across subscription losses.
• Push subscription renewal while tab closed — Added pushsubscriptionchange handler in the service worker so the browser can auto-renew the push subscription even when no tab is open, keeping notifications working indefinitely.

Changed

• Refactored push subscription sync — Extracted syncSubscriptionToServer() helper to share logic between initial subscribe, auto-resubscribe, and subscription renewal flows.

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📋 Full changelog: docs/CHANGELOG.md