fix(frontend): update ModelInfoResponse types to match backend structure

- Update TypeScript types to match flat backend response structure
- Remove nested model_info and metrics objects
- Remove label_config, use labels array and per_class_metrics array
- Update all component references to use new structure
- Generate default colors for prediction labels in CandleChart
- Fix TypeScript type errors for nullable model_version
- Remove accuracy/F1 metrics display (not in new response)

src/types/predictions.ts

@@ -16,40 +16,23 @@ export interface PerCandlePrediction {
   confidence: number;
 }
 
-export interface ModelInfo {
-  model_name: string;
-  model_version: string;
-  model_type: string;
-  experiment_name: string;
-  run_id: string;
-  trained_at: string;
-  feature_count: number;
-  label_names: string[];
-}
-
 export interface PerClassMetrics {
-  [label: string]: {
-    precision: number;
-    recall: number;
-    f1_score: number;
-    support: number;
-  };
-}
-
-export interface ModelMetrics {
-  accuracy: number;
-  f1_macro: number;
-  f1_weighted: number;
-  per_class: PerClassMetrics;
+  label: string;
+  precision: number;
+  recall: number;
+  f1_score: number;
+  support: number;
 }
 
 export interface ModelInfoResponse {
-  model_info: ModelInfo;
-  metrics: ModelMetrics;
-  label_config: {
-    name: string;
-    color: string;
-  }[];
+  model_name: string;
+  model_version: string | null;
+  model_type: string;
+  trained_at: string | null;
+  dataset_version: string | null;
+  feature_engineering_enabled: boolean;
+  labels: string[];
+  per_class_metrics: PerClassMetrics[];
 }
 
 export interface PredictRequest {