Learning path display options

[fbacall]

Summary of changes

• Learning paths with only 1 topic will have that topic expanded by default.
• Adds the option to display learning paths "unordered", which hides the ordering labels from the topic view.

Motivation and context

#1169
#1247

Screenshots

LP with only 1 topic:

Unordered LP:

Form:

Display:

Checklist

• I have read and followed the CONTRIBUTING guide.
• I confirm that I have the authority necessary to make this contribution on behalf of its copyright owner and agree to license it to the TeSS codebase under the BSD license.

[Copilot]

Pull request overview

Updates Learning Path presentation to better support (a) single-topic learning paths and (b) “unordered” learning paths where topic ordering labels are hidden.

Changes:

• Auto-expands the topic contents when a learning path has exactly one topic (CSS/JS + view classes).
• Adds an unordered flag on learning_paths with a form checkbox and applies an .unordered class in the show view.
• Adds controller/view tests for single-topic display.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
test/controllers/learning_paths_controller_test.rb	Adds assertions for multi-topic vs single-topic rendering.
db/schema.rb	Reflects new unordered column on learning_paths.
db/migrate/20260421144919_add_unordered_to_learning_paths.rb	Adds unordered boolean column.
config/locales/en.yml	Adds hint text for the new form option.
app/views/learning_paths/show.html.erb	Adds class logic for single-topic + unordered display modes.
app/views/learning_paths/_form.html.erb	Adds checkbox to edit unordered.
app/controllers/learning_paths_controller.rb	Permits :unordered via strong params.
app/assets/stylesheets/learning-paths.scss	Adds styling for .single-topic and .unordered.
app/assets/javascripts/learning_paths.js	Disables expand/collapse click behavior for single-topic view.

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