Add requirements, environment configuration, and config loader

.env

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+# Hugging Face API
+HF_TOKEN=your_hf_token
+HF_API_ENDPOINT_URL=https://zxzbfrlg3ssrk7d9.us-east-1.aws.endpoints.huggingface.cloud/v1/
+
+# External APIs
+TAVILY_API_KEY=your_tavily_key
+OPENWEATHER_API_KEY=your_weather_key
+NASA_API_KEY=your_nasa_key
+
+# Redis
+REDIS_HOST=localhost
+REDIS_PORT=6379
+REDIS_USERNAME=your_redis_user
+REDIS_PASSWORD=your_redis_pass
+
+# Local Model
+LOCAL_MODEL_NAME=mistral-7b
+
+# Ollama
+OLLAMA_HOST=http://localhost:11434

requirements.txt

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+streamlit==1.24.0
+fastapi==0.95.0
+uvicorn==0.21.1
+redis==5.0.3
+python-dotenv==1.0.0
+openai==1.35.6
+tavily==1.0.2
+requests==2.31.0
+docker==6.1.3

utils/config.py

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+import os
+from dotenv import load_dotenv
+
+class Config:
+    def __init__(self):
+        load_dotenv()
+        self.hf_token = os.getenv("HF_TOKEN")
+        self.hf_api_url = os.getenv("HF_API_ENDPOINT_URL")
+        self.tavily_api_key = os.getenv("TAVILY_API_KEY")
+        self.openweather_api_key = os.getenv("OPENWEATHER_API_KEY")
+        self.nasa_api_key = os.getenv("NASA_API_KEY")
+        self.redis_host = os.getenv("REDIS_HOST")
+        self.redis_port = int(os.getenv("REDIS_PORT", "6379"))
+        self.redis_username = os.getenv("REDIS_USERNAME")
+        self.redis_password = os.getenv("REDIS_PASSWORD")
+        self.local_model_name = os.getenv("LOCAL_MODEL_NAME", "mistral-7b")
+        self.ollama_host = os.getenv("OLLAMA_HOST", "http://localhost:11434")
+
+config = Config()