fix: use correct column name (animal_id) in get_event_animals query

The animal_registry table uses animal_id as its primary key, not id.

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

data.txt

@@ -0,0 +1,14 @@
+41 ducks, 1 adult drake 13.02.2025
+-2 female ducks 27.04.2025 gift
+-4 male ducks 12.05.2025 harvest
++13 ducklings 15.06.2025
+-1 weak female duck 27.06.2025 put it down
+34 adult ducks of which 2 drakes, 27.06.2025
+-1 female duck, found dead, 22.07.2025
+-8 female ducks, 25.07.2025 harvest
+-10 female ducks 6.08.2025 harvest; 15 adults (14 female 2 male) + 13 ducklings left
++4 goslings 4.08.2025 bought from OLX (Oiã)
+-3 Chinese geese 08.10.2025 harvest (0 chinese and 4 toulouse goslings left)
+-2 geese predator 19.10.2025
+-1 female duck predator 19.12.2025
+-2 ducks (1 female and 1 male) predator 25.12.2025