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env.example

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+#############################################
+## Django / Local Development
+#############################################
+DJANGO_SECRET_KEY=change-me-in-development
+DJANGO_DEBUG=true
+DJANGO_ALLOWED_HOSTS=localhost,127.0.0.1
+
+#############################################
+## Local PostgreSQL (Docker compose defaults)
+#############################################
+POSTGRES_HOST=localhost
+POSTGRES_PORT=5543
+POSTGRES_DB=hue_portal
+POSTGRES_USER=hue
+POSTGRES_PASSWORD=huepass
+
+#############################################
+## Redis Cache (Optional - for query rewrite and prefetch caching)
+#############################################
+# Supports Upstash and Railway Redis free tier
+REDIS_URL=redis://localhost:6380/0
+# Cache TTLs (in seconds)
+CACHE_QUERY_REWRITE_TTL=3600  # 1 hour
+CACHE_PREFETCH_TTL=1800  # 30 minutes
+
+#############################################
+## Hugging Face / Tunnel automation
+#############################################
+HF_SPACE_ID=davidtran999/hue-portal-backend
+# Nếu không export HF_TOKEN trong shell, tool sẽ cố đọc ~/.cache/huggingface/token
+HF_TOKEN=
+
+# Ngrok / Cloudflare tunnel settings
+NGROK_BIN=ngrok
+NGROK_REGION=ap
+NGROK_AUTHTOKEN=
+PG_TUNNEL_LOCAL_PORT=5543
+PG_TUNNEL_WATCH_INTERVAL=45
+
+# Credentials that sẽ được đẩy lên HF secrets
+PG_TUNNEL_USER=hue_remote
+PG_TUNNEL_PASSWORD=huepass123
+PG_TUNNEL_DB=hue_portal
+
+#############################################
+## LLM / llama.cpp (Qwen2.5-1.5b or Vi-Qwen2-3B-RAG) defaults
+#############################################
+DEFAULT_LLM_PROVIDER=llama_cpp
+LLM_PROVIDER=llama_cpp
+# Model path (local file path or Hugging Face repo)
+LLM_MODEL_PATH=/app/backend/models/qwen2.5-1.5b-instruct-q5_k_m.gguf
+# Future: Vi-Qwen2-3B-RAG (when Phase 3 is complete)
+# LLM_MODEL_PATH=/app/backend/models/vi-qwen2-3b-rag-q5_k_m.gguf
+LLAMA_CPP_CONTEXT=4096
+LLAMA_CPP_THREADS=2
+LLAMA_CPP_BATCH=512
+LLAMA_CPP_MAX_TOKENS=512
+LLAMA_CPP_TEMPERATURE=0.35
+LLAMA_CPP_TOP_P=0.85
+LLAMA_CPP_REPEAT_PENALTY=1.1
+LLAMA_CPP_USE_MMAP=true
+LLAMA_CPP_USE_MLOCK=true
+RUN_HEAVY_STARTUP_TASKS=0
+
+#############################################
+## Frontend
+#############################################
+# Gán VITE_API_BASE khi muốn trỏ tới API khác (vd HF Space)
+VITE_API_BASE=
+