Diploma

Added

• Full multisite support. Each course, lesson, and quiz lives only on the site it was created on, just like Craft entries with site-scoped sections. Element queries and index pages are now correctly scoped to the active site.
• Standard Craft breadcrumb-style site switcher on every Diploma CP page (dashboard, course/lesson/quiz edit screens, enrollments, certificates, settings). Course and quiz element indexes show the same switcher when multisite is enabled. Switching sites preserves the current path and query params.
• Migration m260518_140000_pin_elements_to_primary_site cleans up any cross-site elements_sites rows from earlier installs so existing elements remain pinned to their original site.

Fixed

• "Add Question" button now appears on the quiz edit screen — the control-panel JS bundle was registering CSS only, so quiz-builder.js never loaded.
• Question modal is now scrollable when content exceeds the viewport; the Save/Cancel footer stays pinned while the body scrolls.
• Saving a question now works on multisite installs. The save endpoint URL was built by concatenating Craft.actionUrl + '/diploma/questions/save', which produced a broken URL when Craft.actionUrl already contained a ?site=… query string. Switched to Craft.getActionUrl() so the path is appended before the query string.
• Frontend progress.js and quiz.js no longer hardcode /diploma/api/… paths, which broke on sites configured under a non-root base URL. The asset bundle now publishes a window.DiplomaUrls object built from UrlHelper::actionUrl() so the scripts always hit the correct per-site action endpoint.

Changed

• Redesigned the question modal to use Craft's native form styling (proper field labels, select dropdown, fullwidth textareas, bordered answer rows) and Garnish's modal shell.
• Course, Lesson, and Quiz now declare isLocalized() as true and override getSupportedSites() to return only the element's own site, so each element is pinned to the site it was created on. New elements pick up the active site from Cp::requestedSite() so creating one with ?site=X writes it to that site.
• Bumped schemaVersion to 1.0.1. Run php craft migrate/all after upgrading.

Fixed

• Dashboard cards and other CP styles weren't loading because the plugin layout never registered the CP asset bundle.

Changed

• Marked nullable parameters explicitly (?string) on element defineSources() and defineActions() for forward compatibility with PHP 8.4's implicit-nullable deprecation.
• Switched lesson and course queries from the string form of orderBy() to the array form (['sortOrder' => SORT_ASC]), and quoted column references in select() so cross-driver behavior is consistent.

Added

• Initial release.
• Courses, lessons, and quizzes as Craft elements.
• Multiple question types: multiple choice, true/false, short answer, matching.
• Enrollment and progress tracking.
• Certificate generation with public verification.
• Pro edition: drip content, PDF certificates, Commerce/Headcount integration.