Bug: events archive does not load the full past Meetup history #64

Problem

fetchMeetupEvents() reads the embedded Apollo state from one current-events page and one past-events page. It does not follow Meetup pagination or cursors, so /events can render only the first batch of past events even when Meetup reports a larger past-event total.

Expected behaviour

The on-site archive represents the full public past-event history available from Meetup, ordered newest first.

Acceptance criteria

• Identify and follow the public pagination/cursor mechanism currently used by Meetup for past events.
• Fetch pages until there is no next page or the public total is reached.
• Deduplicate events by stable Meetup ID and keep descending chronological order.
• Keep current upcoming-event behaviour unchanged.
• Add fixtures and tests for multi-page parsing, deduplication and an incomplete/changed payload.
• Keep the direct Meetup archive link as the canonical escape hatch when the source is unavailable.