Add home route with API documentation

app.py

@@ -23,6 +23,31 @@ app = Flask(__name__)
 # Load classifier globally
 classifier_model = load_classifier()
 
+@app.route('/')
+def home():
+    """API documentation homepage"""
+    return jsonify({
+        "name": "Pneumonia Risk Assessment API",
+        "version": "1.0.0",
+        "description": "AI-powered API for assessing pneumonia risk from respiratory audio recordings",
+        "endpoints": {
+            "POST /predict_pneumonia": {
+                "description": "Analyze audio file for pneumonia risk",
+                "parameters": {
+                    "audio_file": "Audio file (multipart/form-data)"
+                },
+                "response": {
+                    "filename": "string",
+                    "pneumonia_risk_score": "float (0.0-1.0)",
+                    "risk_level": "string (Low/Moderate/High)",
+                    "note": "string"
+                },
+                "example_curl": "curl -X POST -F 'audio_file=@recording.wav' https://your-space.hf.space/predict_pneumonia"
+            }
+        },
+        "note": "This is an AI assessment tool, not a medical diagnostic device. Always consult healthcare professionals."
+    }), 200
+
 @app.route('/predict_pneumonia', methods=['POST'])
 def predict_pneumonia_endpoint():
     if 'audio_file' not in request.files: