Added

• Portfolio search auto-scroll: typing in the search box scrolls the first matching project row into view.
• TasksAPI.fetchOne(id) for fetching a single task by ID.

Fixed

• Task create/update and comment operations no longer block on a full cache table re-sync. cacheWriteThrough is now fire-and-forget since GET /tasks reads from files, not the cache.
• Comment handlers (add, edit, delete) now fetch only the edited task instead of all tasks, reducing unnecessary API load.