Presidents Timeline in Committee Members Page

[mu-tsu-mi]

I added a timeline for Ruby Australia presidential history to the current committee members page based on the idea by @ZimbiX . Please refer below and review this request.

I used the existing yml files (committee.yml for the current president and previous.yml for all of previous presidents) to get president names, term start and term end. Presidents data is sourced from forum archive, Slack announcements and commits to those yml files. All logic for this timeline lives in the committee_helper file.

• The related issue is here: Record a history of all the Presidents of Ruby Australia on the website #443
• UI Screenshot:

[Copilot]

Pull request overview

Adds a “Presidents Timeline” visualization to the Committee Members page, sourcing presidential term data from existing committee YAML data and computing timeline segments in CommitteeHelper.

Changes:

• Extend committee data YAML to include president term start/end dates (including missing historical president entry data).
• Render a timeline chart on committee-members page using helper-provided president/term calculations.
• Add a helper spec to validate the presidents data pipeline.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
app/helpers/committee_helper.rb	Adds logic to load, group, and compute timeline term segments for presidents.
app/views/pages/committee-members.html.erb	Renders the presidents timeline UI above the committee members grid.
config/data/committee.yml	Adds start/end dates for the current president’s term.
config/data/previous.yml	Adds/updates historical president term ranges and appends a missing president entry.
spec/helpers/committee_helper_spec.rb	Introduces initial tests for CommitteeHelper#presidents.

[mu-tsu-mi]

@simonhildebrandt , I have made adjustments according to your advice and copilot suggestions. Please see comments for each item and review those updates.

[simonhildebrandt]

The mocks look great, and so does the result. Well done!

(One small question on the committee members template, but I won't hold up the PR for that.)

[leesheppard]

Thank you for your work @mu-tsu-mi appreciate your time and effort!