[pimpeters]

Why

A friend's message faded from free roam's log after 8-15 s, counted as read as soon as it showed, and could not be seen again in the game.

What changes for players

• An envelope with the unread count stays under the log until the conversation is opened (on touch screens, tap it).
• I opens the newest unread conversation.
• The message card in the game shows the history with that friend, up to the last 40 messages, above the field. It used to show only the friend's latest message.
• Tab lists the friends, unread first.
• Messages that arrive while the card is open join the conversation or wait for it to close.
• Quick chat no longer pushes a friend's message out of the log.
• A message shown only in the log now stays unread, so the Friends tab's dot stays lit until it is opened.

Page only: no server, runtime or lift changes. New texts are translated in every language, and docs/web/PLAYING.md is updated.

Testing

• npm run check and the language check pass.
• web/test/messages.test.mjs, with 3 new tests, passes (run in a real browser through a small stand-in for Playwright, as no browser could start in WSL).
• npm run test:fast: 556 passed, 8 failed, all 8 because no browser could start there. boot, claim-ui, copy, friends, quickchat, sitekeys and menu-layout still need CI.
• Checked by hand on a local server in the game, and with phone emulation.

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