fix(frontend): resolve TypeScript type errors from skin model refactor

- Remove s.trend from dashboard (field removed from SkinConditionSnapshot)
- Replace trend with texture in SkinPhotoAnalysisResponse (api.ts)
- Use record_id instead of id for LabResult and MedicationEntry keyed each blocks

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/lib/api.ts

@@ -221,7 +221,7 @@ export const deleteSkinSnapshot = (id: string): Promise<void> => api.del(`/skinc
 
 export interface SkinPhotoAnalysisResponse {
 	overall_state?: string;
-	trend?: string;
+	texture?: string;
 	skin_type?: string;
 	hydration_level?: number;
 	sebum_tzone?: number;