Give a highlighted fixture back its date, and let the folded sheet have one

[dgoodenough]

Two things I broke in #14, found by looking at what Upcoming actually does now.

The tooltip lost the date

A summary has room for a headline and a detail, and the split rewrite spent the detail on the mirror archive. So a cell highlighted as an upcoming first meeting said "first meeting coming up" and stopped there — the date and the competition, the only reason to look at a yellow cell, were gone.

It was not only Upcoming. The detail line carried three different facts, and every one of them was being dropped:

cell	before #14	after #14	now
upcoming	first meeting coming up · 2026-09-23 · International Friendly	Men's: first meeting coming up · Women's: never played	Men's: first meeting coming up · 2026-09-23 · International Friendly · Women's: never played
played	110 meetings · 1914–2025	Men's: 110 meetings · Women's: 15 meetings	Men's: 110 meetings · 1914–2025 · Women's: 15 meetings
pre-debut	had not debuted by 1930 · first match 2007	Men's: had not debuted by 1930 · Women's: …	all three

The cell's own archive keeps its detail and the mirror is appended rather than substituted. summaryHtml renders as many lines as it is given instead of exactly two, so the tooltip, the peek card and the live region all pick it up.

Upcoming was dead on the folded sheet

The toggle greyed out alongside Never-played, on the grounds that both were single-archive ideas. Only one of them is.

Never-played moves the meetings ramp, and a folded cell carries the four-way key instead, whose colours are fixed — it genuinely has nothing to change there. But a pairing that has never met in either game and has a date booked is exactly what the folded sheet is for. It highlights those now, on the same rule the unfolded halves use: yellow replaces never, and a pair that has already met in one game keeps the colour that says so.

Of the 36 scheduled first meetings (34 distinct pairs — two have a fixture booked in both games), 23 have never met in either and light up folded; the other 11 keep their men's-only or women's-only colour. The folded tooltip names the fixture either way.

Two bits of rot, while there

• The folded key named four colours; the sheet paints seven. Upcoming, not-yet-debuted and never-played-anyone are in it now.
• The fixtures feed still described itself as covering both games "whichever dataset the grid is set to" — not a thing to set since the fold landed.

Testing

Verified in Chromium, unfolded and folded:

• Upcoming cells carry date and competition again, in both halves; played pairs carry their year range; pre-debut cells carry their first-match year; never-played-anyone and self cells are unchanged.
• Scrubbed to 1930 as well as at the present.
• Folded: 384px of highlight where there was none, the toggle live, Never-played still correctly disabled, and toggling off clears it.
• The peek card renders the extra line.
• No console errors.

python -m unittest discover -s tests — 37 passed.

🤖 Generated with Claude Code

https://claude.ai/code/session_01Ktg1PkqJw6sBz1Wh5qyDsh

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