fix: align Rust ML service verification

Corrected API response format documentation in README:
- Health endpoint: removed non-existent model_path field
- Metadata endpoint: fixed field names (service_name, service_version instead of service, version) and label order
- Prediction endpoint: corrected response structure to match implementation (single prediction object with probabilities map, not array)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

apps/ml-service/README.md

@@ -97,8 +97,7 @@ curl http://localhost:8001/health
 ```json
 {
   "status": "ok",
-  "model_loaded": true,
-  "model_path": "../../Machine_Learning/model/model.onnx"
+  "model_loaded": true
 }
 ```
 
@@ -117,15 +116,16 @@ curl http://localhost:8001/metadata
 **Response:**
 ```json
 {
-  "service": "ZeaVis ML Service",
-  "version": "0.1.0",
+  "service_name": "zeavis-ml-service",
+  "service_version": "0.1.0",
   "model_path": "../../Machine_Learning/model/model.onnx",
+  "model_loaded": true,
   "input_size": 224,
   "labels": [
     "Bercak Daun",
-    "Hawar Daun",
+    "Daun Sehat",
     "Karat Daun",
-    "Daun Sehat"
+    "Hawar Daun"
   ]
 }
 ```
@@ -148,28 +148,14 @@ curl -X POST http://localhost:8001/predict \
 
 **Response:**
 ```json
-{
-  "predictions": [
 {
   "label": "Daun Sehat",
-      "confidence": 0.95
-    },
-    {
-      "label": "Bercak Daun",
-      "confidence": 0.03
-    },
-    {
-      "label": "Hawar Daun",
-      "confidence": 0.01
-    },
-    {
-      "label": "Karat Daun",
-      "confidence": 0.01
-    }
-  ],
-  "top_prediction": {
-    "label": "Daun Sehat",
-    "confidence": 0.95
+  "confidence": 0.95,
+  "probabilities": {
+    "Bercak Daun": 0.02,
+    "Daun Sehat": 0.95,
+    "Karat Daun": 0.01,
+    "Hawar Daun": 0.02
   }
 }
 ```