<ul><li><strong>Playwright screenshot QA pass completed</strong>: All 8 target screenshots captured — main page, FAQS tab, CATEGORIES tab, FAQ VIDEOS tab, SETTINGS tab, Add FAQ modal, Add Category view, final console state</li><li><strong>PHP errors found and fixed — classes/pluginreplace.php</strong>: Added <code>global $domainsite_params;</code> inside wwbnPlugin() function — was silently failing with undefined variable warning on every call; fixed undefined variable $citiesList and $citiesCount by initializing to empty defaults before conditional block; fixed Undefined array key [1] on $subdArr by adding <code>isset($subdArr[1])</code> guard; added null-safe defaults for all 30+ str_replace variables (domainDetailKeyword, geo fields, contact fields, social URLs, ads, logos, description) to eliminate Deprecated: str_replace null parameter warnings across all modules that call wwbnPlugin()</li><li><strong>PHP errors fixed — FAQManager/inc_faq_manager.php</strong>: Added domain name lookup using domain_names_sites table to resolve $rsDomain and $domainid for page header display — these variables were undefined causing Warning + Deprecated strtoupper(null) on every tab</li><li><strong>Null-safe strtoupper() applied</strong>: videos.php, settings.php, list_faq_categories.php, list_faq_items.php — all use <code>strtoupper($rsDomain ?? '')</code> as defense in depth</li><li><strong>Net result</strong>: 0 PHP errors visible on page after fixes; all 5 tabs render cleanly (FAQS, CATEGORIES, FAQ VIDEOS, SETTINGS, ADMIN); Add FAQ modal opens correctly with all fields; network 0 4xx/5xx failures</li><li><strong>Remaining JS warnings (pre-existing, not FAQManager)</strong>: Permissions-Policy header YouTube allowlist (server config issue), bootstrap-slider namespace conflict, nested select tag from another module, cCategoryName/cCategoryDesc from ticket_system hidden modal</li><li><strong>Backups created</strong>: pluginreplace-bk-v1.php, inc_faq_manager-bk-v5.php, videos-bk-v3.php, settings-bk-v3.php, list_faq_categories-bk-v4.php, list_faq_items-bk-v4.php</li></ul>