Fix clearer error message when CouchDB is unavailable#66

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Dev10-sys wants to merge 3 commits intodbpedia:masterfrom

Dev10-sys:couchdb-better-error-message

Commits on Jan 22, 2026

fix(chatbot): handle CouchDB unavailability with clear error and safe SPARQL init
Dev10-sys
committed
fix(chatbot): safely handle CouchDB outage using disabled SPARQL fallback
Dev10-sys
committed

Commits on Jan 23, 2026

fix(chatbot): fully disable SPARQL paths when explorer DB is unavailable
Dev10-sys
committed