LLM_BACKEND="llamacpp" TEXT_MODEL="Qwen/Qwen3-4B-Instruct-2507" GGUF_MODEL_REPO="Qwen/Qwen3-1.7B-GGUF" GGUF_MODEL_FILE="Qwen3-1.7B-Q8_0.gguf" LLAMA_CPP_N_CTX="4096" ASR_MODEL="openai/whisper-tiny" KOKORO_LANG_CODE="z" KOKORO_VOICE="zf_xiaobei" MAX_NEW_TOKENS="220" APP_URL="MY_APP_URL"