# Copy this file to .env and fill in your values.
# Never commit .env to version control.

# PostgreSQL connection string (psycopg / asyncpg format)
# Example: postgresql://researcher:change_me@localhost:5432/papers
DATABASE_URL=postgresql://researcher:change_me@localhost:5432/papers

# GROBID service base URL (containerised — see infra/docker-compose.yml)
GROBID_URL=http://localhost:8070

# Ollama base URL for optional local LLM Q&A layer
OLLAMA_BASE_URL=http://localhost:11434

# Sentence-transformers model for dense embeddings.
# BGE-M3 (BAAI/bge-m3) produces 1024-dimensional vectors and supports
# dense + sparse (hybrid) retrieval. Change together with EMBEDDING_DIM.
EMBEDDING_MODEL=BAAI/bge-m3

# Dimension of the embedding vectors. Must match EMBEDDING_MODEL output.
# BGE-M3 = 1024 | Jina v4 = 2048 | Qwen3-Embedding-0.6B = 1024
EMBEDDING_DIM=1024

# E-mail address for the OpenAlex Polite Pool (faster rate limits).
# Required by OpenAlex ToS when making automated requests.
OPENALEX_MAILTO=you@example.com