Fixes a TypeError on the What's New / New Posts page that could occur on fresh installs when exclusion data had not been initialized yet. Also normalizes existing exclusion values during upgrade so older NULL data is converted safely.
Admin option: "Globally excluded users" - specify users whose threads are hidden from the New Posts feed for ALL users site-wide. Uses XenForo's native token-input autocomplete for easy username entry.
Admin option: "Allow per-user exclusions" (on/off toggle, default ON) - controls whether individual users can manage their own exclusion lists via Account settings. When disabled, the account page and nav link are hidden.
Improvements
New option group "New Posts Filter" in AdminCP > Options
Account sidebar nav link is now conditionally shown based on the per-user toggle
Account page now includes proper sidebar navigation and uses standard XenForo member list styling
Thread filtering merges both global and per-user exclusion lists into a single SQL filter
