<ul><li>Built complete standardized module structure for BlogManager under /modules/BlogManager/</li><li>Created BlogModuleModel (PHP 8.1 compliant) — adapts getBlogList, getCategoryList, getBlogById, getBlogCount, getCategoryCount from legacy BlogModel; uses BASEPATH_ for DB connect, session_status() check, intval() on all SQL params, null-coalescing on all session reads</li><li>Created BlogAdminService — shared by PlatformAdmin and TenantAdmin contexts; exposes getAdminContext(), getDashboardData(), getModuleMeta(), getBlogList(), getCategoryList()</li><li>Created 4 controllers: BlogPlatformAdminController, BlogTenantAdminController, BlogTenantMemberController, BlogTenantPublicController</li><li>Created context entry points: platform_admin/, tenant_admin/, tenant_member/, tenant_public/ index files</li><li>Created UBOLD4 Bootstrap 4 views for all 4 contexts with dashboard counters, post tables, category badges</li><li>Created API stub (api/index.php) returning standard JSON envelope</li><li>Created module.config.php (module_key: blog), routes.php, bootstrap index.php with 5-tier context resolution</li><li>Created documentation/README.md with 9 sections including legacy compat model, context model, PHP 8.1 notes, future paging plan, shared AdminService notes</li><li>All 18 PHP files pass php -l syntax check — 0 errors</li><li>Legacy files (classes/blog/BlogModel.php, controller/blog/BlogController.php, platform/module/BlogManager/) untouched</li></ul>