feat: convert workshops to a Jekyll collection

[mmcky]

Summary

Converts workshops from hardcoded HTML in two separate files into a Jekyll collection, so adding a new workshop requires editing exactly one file.

Problem

Previously, adding a workshop meant updating two places manually:

1. pages/workshops.md — the full workshops page
2. _layouts/home.html — the hardcoded "Recent Workshops" list on the homepage

Solution

Introduced a _workshops/ Jekyll collection (similar to _lectures/ and _projects/).

Changes

_config.yml

Added workshops collection with output: false (no individual pages generated).

_workshops/ — 28 new data files

Each workshop is a markdown file named YYYY-MM-DD-slug.md with front matter:

title: "Workshop Title"
location: "Institution Name"
date: "YYYY-MM-DD"
year: YYYY
presenters: "Name, Name"
repo_url: "https://github.com/..."   # optional
description: "..."                    # optional, recent workshops only

pages/workshops.md

Rewritten as a Liquid template:

• Recent workshops (year >= 2024): sorted newest-first, shown with full details (presenters, link, description)
• Past workshops (year < 2024): grouped by year in a Bootstrap accordion, sorted newest-first, first year expanded

_layouts/home.html

Hardcoded 5-item list replaced with a Liquid loop:

{% assign recent_workshops = site.workshops | sort: "date" | reverse %}
{% for workshop in recent_workshops limit:5 %}

Verified

• bundle exec jekyll build passes cleanly
• Homepage "Recent Workshops" renders the same 5 entries (IUJ Feb 2026, IMF Dec 2025, Portugal Oct 2025, Hitotsubashi Sep 2025, Kyoto Jun 2025)
• Workshops page renders all recent and past workshops with correct dates and locations

Adding a new workshop (going forward)

Create a single file _workshops/YYYY-MM-DD-slug.md — the homepage and workshops page both update automatically on the next build.

Closes #197

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[Copilot]

Pull request overview

This PR migrates workshop content from hardcoded HTML into a dedicated Jekyll collection (_workshops/), so the homepage “Recent Workshops” section and the /workshops/ page can both render from a single source of truth.

Changes:

• Added a workshops collection in _config.yml and introduced _workshops/ Markdown front-matter entries for each workshop.
• Rewrote pages/workshops.md to render “Recent” vs “Past” workshops via Liquid, including a year-grouped accordion for past workshops.
• Updated _layouts/home.html to populate the homepage “Recent Workshops” list via a Liquid loop over site.workshops.

Reviewed changes

Copilot reviewed 31 out of 31 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
_config.yml	Registers the workshops collection for use in Liquid templates.
_layouts/home.html	Replaces hardcoded homepage workshop list with a dynamic Liquid loop.
pages/workshops.md	Replaces hardcoded workshops page content with Liquid-driven rendering/grouping.
_workshops/2016-05-01-chicago-federal-reserve.md	Adds workshop collection entry (data).
_workshops/2016-06-01-econometric-society.md	Adds workshop collection entry (data).
_workshops/2016-10-01-university-of-economics-ho-chi-minh-city.md	Adds workshop collection entry (data).
_workshops/2017-03-01-rba-rbnz.md	Adds workshop collection entry (data).
_workshops/2017-06-01-university-of-chicago.md	Adds workshop collection entry (data).
_workshops/2017-08-01-anu-ams.md	Adds workshop collection entry (data).
_workshops/2017-09-01-us-phd-workshops.md	Adds workshop collection entry (data).
_workshops/2018-03-01-anu-honours-workshop.md	Adds workshop collection entry (data).
_workshops/2018-05-01-university-of-copenhagen.md	Adds workshop collection entry (data).
_workshops/2019-04-01-department-of-industry-innovation-and-science.md	Adds workshop collection entry (data).
_workshops/2022-07-01-research-school-of-economics-anu.md	Adds workshop collection entry (data).
_workshops/2022-09-01-crest-paris.md	Adds workshop collection entry (data).
_workshops/2022-09-15-central-bank-of-chile.md	Adds workshop collection entry (data).
_workshops/2023-04-01-keio-university.md	Adds workshop collection entry (data).
_workshops/2023-04-10-nagoya-university.md	Adds workshop collection entry (data).
_workshops/2023-04-15-kobe-university.md	Adds workshop collection entry (data).
_workshops/2023-10-01-columbia-university.md	Adds workshop collection entry (data).
_workshops/2023-10-15-international-monetary-fund.md	Adds workshop collection entry (data).
_workshops/2024-03-01-international-monetary-fund.md	Adds workshop collection entry (data).
_workshops/2024-05-01-central-bank-of-chile.md	Adds workshop collection entry (data).
_workshops/2024-08-01-university-of-melbourne.md	Adds workshop collection entry (data).
_workshops/2024-11-01-reserve-bank-of-australia.md	Adds workshop collection entry (data).
_workshops/2025-06-01-international-university-of-japan.md	Adds workshop collection entry (data).
_workshops/2025-06-15-kyoto-university.md	Adds workshop collection entry (data).
_workshops/2025-09-01-hitotsubashi-university.md	Adds workshop collection entry (data).
_workshops/2025-10-01-bank-of-portugal.md	Adds workshop collection entry (data).
_workshops/2025-12-01-international-monetary-fund.md	Adds workshop collection entry (data).
_workshops/2026-02-01-international-university-of-japan.md	Adds workshop collection entry (data).

[mmcky]

Pre-merge validation summary

Branch was updated with main (clean merge; the only overlapping file, _config.yml, now carries both the url: setting from #199 and the workshops collection). Build CI green on the merge commit (5f91f3e).

Data fidelity — rendered output diffed against the old hardcoded content

Check	Result
Workshop headings (date, location) on /workshops/	28/28 identical, including the restored "June – August 2017, University of Chicago" range via the new date_display field
Presenter lines	Identical across all 28 workshops
Workshop repo links	Identical (set-diff of all github.com hrefs; only non-workshop chrome links differ)
Homepage "Recent Workshops" list	Matches the live site exactly — same 5 workshops, dates, and order
Descriptions	7/7 present; 6 byte-identical, 1 (IMF Dec 2025) has a minor tense copyedit ("will cover… and also investigate" → "covers… and investigates") — content-equivalent
Past-workshops accordion year order	2023 → 2016 descending, first year expanded, verified in built output

Review history

All 5 Copilot review comments addressed: past_years explicit sort and date_display support fixed in 5b273ab; recent/past year-boundary typo fixed in the PR description; the two title-rendering comments pushed back with justification (every workshop's visible heading renders unconditionally from date, location; the title field is only repo-link text, mirroring the old page).

Ready to merge. 🤖 Validated with Claude Code