Changes, as filed:

• Guided tutorial: 11 marker-led steps from the first station to the first planks, prescriptive hexes with rotation, working in co-op for host and clients; disable in Options or skip on the card
• The station ghost shares the exact build rulebook - a green ghost never lies about platform track again
• The lobby checks the BUILD as well as the mods: half-synced playtest pairs get a readable rejection at the door
• Four playtest reports fixed: chat keeps the caret after Enter, buying a train opens the new train's panel, Record/Awards buttons unlight when their panel closes, tutorial labels draw in front of the rings
• Hex rings turned 30 degrees to actually hug their tile (tutorial markers and the pad crosshair)
• Edit line: clicking a served facility or town picks its station; the join address is remembered
• Co-op clients see foundings, closures, ruins and town growth immediately; train motion is smoothed between packets; client wagons no longer fall out of the sky
• Playtest mini-build pipeline with a version stamp; exported builds write crash logs

The bank trusts these prove satisfactory.