Thanks for the detailed check — you caught a real clarity problem. Both rules were active: Forge gives +4 per working item, while Open archive day adds +4 per verified item or −2 per unverified item. A working, verified item therefore gets +4 +4 from those two rules; neither replaces the other.
I’ve published 2.6.2. Port rule, Expedition event and any price-affecting Market signal are now shown together, with an explicit note that applicable bonuses and penalties add together. The same conditions are available in route information, the captain’s journal and the offer explanation; new arrival logs include them together too. The price calculation is unchanged. I checked the second-port display in English and Russian, including a narrow screen, and a real offer showed both +4 lines.
Reload the game page to get the update. Existing saves remain usable; older log entries keep their original wording. Thanks also for confirming that the presentation limit and expanded receipt were clear.
Update notes: 2.6.2: Two rules, one price