# OpenAI API authentication (required)
OPENAI_API_KEY=sk-...

# Qdrant configuration
QDRANT_URL=http://localhost:6333
QDRANT_API_KEY=

# Default cloud Embedding Model (registry id / OpenAI model name)
EMBEDDING_MODEL=text-embedding-3-large
LLM_MODEL=gpt-4o-mini

# Local Ollama embeddings (Active model switched in Admin)
OLLAMA_BASE_URL=http://192.168.10.10:11435

# Retrieval defaults
TOP_K=5
# Neighbor Expansion for fixed_size only (ADR-0023); 3/3 = stabilized default after benchmark
NEIGHBOR_PREV=3
NEIGHBOR_NEXT=3

# LLM generation parameters
TEMPERATURE=0.0
MAX_TOKENS=1024

# Chunking defaults
CHUNK_SIZE=512
CHUNK_OVERLAP=50

# Semantic chunking parameters
SEMANTIC_THRESHOLD=0.3
SEMANTIC_MIN_CHUNK_SIZE=3

# SQLite database path
DATABASE_URL=sqlite:///./data/chunking_benchmark.db
# Text PDF gate (reject scanned/image PDFs)
PDF_MIN_TOTAL_CHARS=100
PDF_MIN_MEDIAN_CHARS_PER_PAGE=40