GOOGLE_API_KEY=your-gemini-key-here
GROQ_API_KEY=your-groq-key-here

PYTHONIOENCODING=utf-8

# --- LLM providers ---
# groq (default) | gemini | claude_local. claude_local runs the claude CLI on this machine with your own Claude
# subscription: local runs only (refused in the clouds, CI, containers and with a cloud STATE_BACKEND), and
# `serve` needs --host 127.0.0.1.
# MAIN_LLM_MODEL=groq
# EVAL_LLM_MODEL=groq                     # the judge and ingest-batch's question writer
# CLAUDE_LOCAL_MODEL=haiku                # haiku | sonnet | opus
# CLAUDE_LOCAL_EFFORT=low
# CLAUDE_LOCAL_MAX_CONCURRENCY=2

# --- Persistent state snapshots ---
# STATE_BACKEND=local                     # local | azure_blob | s3
# LOCAL_DIR=/tmp/state/.local
# DATA_DIR=/tmp/state/data
# AZURE_STORAGE_ACCOUNT_URL=https://<account>.blob.core.windows.net
# AZURE_STATE_CONTAINER=rag-state
# AZURE_STORAGE_CONNECTION_STRING=        # Azurite only
# S3_STATE_BUCKET=

# --- MCP server (HTTP transport at /mcp) ---
# Localhost-only Host header check. Keep it on locally; public deployments set it to false.
# MCP_DNS_REBINDING_PROTECTION=true

# --- Classical routing ---
# A chunk at least this similar to the question overrules the classifier's "no retrieval".
# Measured on 2026-10-02 (.plan.md, Phase 7); re-measure after large batches.
# CORPUS_PROBE_THRESHOLD=0.55