Added profile setting to configre thread title click behavior - jump to first unread

app/assets/stylesheets/components/settings.css

@@ -444,6 +444,13 @@
   flex-shrink: 0;
 }
 
+.settings-page .radio-group input[type="checkbox"] {
+  width: auto;
+  margin: var(--spacing-1) 0 0 0;
+  padding: 0;
+  flex-shrink: 0;
+}
+
 .settings-page .radio-group .radio-text {
   flex: 1;
 }

app/controllers/settings/preferences_controller.rb

@@ -13,7 +13,7 @@ def update
     private
 
     def preferences_params
-      params.require(:user).permit(:mention_restriction)
+      params.require(:user).permit(:mention_restriction, :open_threads_at_first_unread)
     end
   end
 end

app/controllers/topics_controller.rb

@@ -1008,15 +1008,16 @@ def topics_page_cache_key
 
     latest_topic = @topics.first
     watermark = "#{latest_topic.last_activity.to_i}_#{latest_topic.id}"
-    [ "topics-index", watermark ]
+    [ "topics-index", watermark, topic_link_pref_cache_key ]
   end
 
   def topics_turbo_stream_cache_key
     [
       "topics-index-turbo",
       params[:filter],
       params[:team_id],
-      params[:cursor].presence || "root"
+      params[:cursor].presence || "root",
+      topic_link_pref_cache_key
     ]
   end
 
@@ -1030,6 +1031,12 @@ def topics_turbo_stream_cache_fetch
     Rails.cache.fetch(topics_turbo_stream_cache_key, expires_in: 10.minutes) { yield }
   end
 
+  def topic_link_pref_cache_key
+    return "top" unless user_signed_in?
+
+    current_user.open_threads_at_first_unread? ? "first-unread" : "top"
+  end
+
   def require_team_membership
     team_id = params[:team_id].presence&.to_i
     return unless team_id

app/helpers/topics_helper.rb

@@ -226,4 +226,12 @@ def team_readers_icon_html(topic:, readers:)
       safe_join(parts)
     end
   end
+
+  def topic_title_link(topic)
+    if user_signed_in? && current_user.open_threads_at_first_unread?
+      topic_path(topic, anchor: "first-unread")
+    else
+      topic_path(topic)
+    end
+  end
 end

app/views/settings/profiles/show.html.slim

@@ -40,4 +40,13 @@
             span.radio-text
               strong Teammates only
               span.radio-description Only users who share a team with you can @mention you
+      h2 Thread Navigation
+      p.settings-hint Control where thread titles open.
+      .form-group
+        .radio-group
+          label
+            = f.check_box :open_threads_at_first_unread
+            span.radio-text
+              strong Open at first unread
+              span.radio-description Jump to first unread message in the thread if the title was clicked
       = f.submit "Save", class: "button-primary"

app/views/topics/_status_cell.html.slim

@@ -27,9 +27,9 @@ td.topic-title.status-border class=status_class id=dom_id(topic, "status_cell")
   .topic-title-main
     .topic-title-icons
       == icons_html
-    = link_to topic.title, topic_path(topic), class: "topic-link"
+    = link_to topic.title, topic_title_link(topic), class: "topic-link"
   .topic-title-mobile
-    = link_to topic.title, topic_path(topic), class: "topic-link"
+    = link_to topic.title, topic_title_link(topic), class: "topic-link"
     - if creator || last_sender
       .topic-byline
         - if creator

db/migrate/20260212183000_add_open_threads_at_first_unread_to_users.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddOpenThreadsAtFirstUnreadToUsers < ActiveRecord::Migration[7.1]
+  def change
+    add_column :users, :open_threads_at_first_unread, :boolean, default: false, null: false
+  end
+end