404 Redirects

Added

• 404 interception via ErrorHandler::EVENT_BEFORE_HANDLE_EXCEPTION
• Redirect rules with Craft's RedirectRule pattern matching (exact and regex)
• Auto-redirect creation on element URI change with chain flattening
• Entry destinations with element chip display in redirects table
• 404 logging with hit counts, referrer tracking, and handled/unhandled status
• Redirect loop detection at save time
• Scheduled redirects with start/end date support
• 410 Gone support for permanently removed content
• Configurable pipeline with shouldHandle, normalizeUrlFromRequest, and normalizeRedirectUrl callbacks
• Dry-run mode for testing alongside other redirect plugins
• Multi-site support with UrlHelper::siteUrl() redirect resolution for correct site prefixes
• Conditional site column in tables and detail pages when multiple sites exist
• CP control panel with 404s listing, redirect management, and log viewer
• Dashboard widgets: latest/top 404s table, 404 trend area chart, handled/unhandled coverage doughnut
• Inline pattern testing with debounced live results on the redirect edit form
• Status indicators using Cp::statusLabelHtml() for handled, enabled, and redirect status
• User permissions: view 404s, delete 404s, manage redirects, delete redirects, view logs
• Pattern matching reference slideout
• Meta sidebar with user chips, element chips, and double-click-to-edit
• GraphQL API with notFoundRedirects404s, notFoundRedirects404, notFoundRedirectsRedirects, notFoundRedirectsRedirect queries
• CSV export/import for 404s and redirects with format selector (native + Retour)
• Retour CSV import with automatic regex-to-Craft pattern conversion
• Import results page with per-row status and error reporting
• Retour migration CLI commands
• Console commands for export, import, reprocess, purge, and migration
• Entry sidebar widget showing redirects pointing to an entry with chip action menus
• Quick add redirect from entry sidebar via slideout
• Redirect edit/delete via slideout from entry sidebar chips
• Slideout-safe Garnish JS components using formAttributes + registerJsWithVars
• Custom event system (notFoundRedirects:redirectSaved, notFoundRedirects:redirectDeleted) for sidebar refresh
• Dedicated log target at storage/logs/not-found-redirects-*.log
• URI helper following Craft convention (no leading slashes)
• Homepage redirect support (empty to displayed as /)