Add root endpoint with API info

flask_app.py

@@ -93,6 +93,23 @@ def image_to_base64(img_array):
     return base64.b64encode(buffer).decode("utf-8")
 
 
+@app.route("/", methods=["GET"])
+def index():
+    """Root endpoint with API info"""
+    return jsonify(
+        {
+            "service": "DCRM Analysis API",
+            "version": "1.0.0",
+            "endpoints": {
+                "GET /health": "Health check",
+                "POST /analyze": "Full DCRM analysis with AI",
+                "POST /extract-curves": "Extract curves only (no AI)",
+            },
+            "docs": "https://github.com/YOUR_REPO/README.md",
+        }
+    )
+
+
 @app.route("/health", methods=["GET"])
 def health_check():
     """Health check endpoint"""