VERTEX_AI_MODEL_LOCATION=null no longer means "function region" (firestore-genai-chatbot §3), firestore-translate-text takes the vertex region from FUNCTION_REGION/genkit default (§2), firestore-vector-search same class (§5). Decide one fallback rule for all three kits.
we're sticking with an explicit DATABASE_REGION param, see firestore-bigquery-export for now.
Ledger: #2974.
VERTEX_AI_MODEL_LOCATION=nullno longer means "function region" (firestore-genai-chatbot §3), firestore-translate-text takes the vertex region fromFUNCTION_REGION/genkit default (§2), firestore-vector-search same class (§5). Decide one fallback rule for all three kits.we're sticking with an explicit DATABASE_REGION param, see firestore-bigquery-export for now.
Ledger: #2974.