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## Description: When a nation attacked multiple bots via boat attacks in parallel, each boat attack computed its troop allocation independently using `player.troops() / 5` without subtracting `botAttackTroopsSent`. The cumulative troop commitment could exceed the nation's actual troop count, and when the queued `AttackExecution`s ran `init()`, they drained the nation to zero. Planetary Realignment found this bug by accident, here Russia has only 39 troops: <img width="1189" height="654" alt="image" src="https://github.com/user-attachments/assets/07b85e00-6734-4ddd-a16e-fe53309e0ef8" /> The land attack path already handled this correctly. The bug in `sendBoatAttack` was introduced by #3786, which made nations see and attack enemies across rivers via boats, and changed `attackBots()` from `.neighbors()` to `.nearby()`. So the bug was on prod for the entirety of v31. This fix extracts the shared attack troop calculation (reserve, bot-aware allocation, troopSendCap, isAttackTooWeak, emoji) into a new `calculateAttackTroops` method, with a callback for the non-bot troop default (land: `player.troops() - targetTroops`, boat: `player.troops() / 5`). Bot targets in both paths now go through the same reserve-aware calculation. ## Please complete the following: - [X] I have added screenshots for all UI updates - [X] I process any text displayed to the user through translateText() and I've added it to the en.json file - [X] I have added relevant tests to the test directory ## Please put your Discord username so you can be contacted if a bug or regression is found: FloPinguin