Edit Learning

Title

Body Action: I implemented the tag filtering feature. Details: I added a `tag_list` helper to the `Learning` model (simple `tags.split(',').map(&:strip)`). I updated `LearningsController#index` to filter by `params[:tag]` (`where("tags LIKE ?", "%#{params[:tag]}%")`) and collect unique tags for the view (`Learning.pluck(:tags).flat_map { |t| t.split(',') }.uniq`). I updated `index.html.erb` with a `turbo_frame_tag` around the list, clickable tag links (`link_to tag, learnings_path(tag: tag)`), and filter controls. I added basic CSS styling for tags. Learning: I learned that simple string-based tags (comma-separated) can be made functional for filtering using basic Rails querying (`LIKE` or `string_to_array` in PG) and Turbo Frames for efficient UI updates without full page reloads, adhering to the 37signals principle of starting simple.

Learned on (YYYY-MM-DD)

Tags

Add comma-separated tags. They help filter learnings later.