Preserve Cloudinary configuration on settings update

Modify Cloudinary configuration endpoint to allow partial updates and preserve existing API keys and secrets when not explicitly provided, and clear input fields on successful save.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ae4037a0-2a6f-4530-9bac-79b543286bda
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/397bca8c-984f-43ff-841a-10897aeb8140/ae4037a0-2a6f-4530-9bac-79b543286bda/sEXz3DF

shared/schema.ts

@@ -230,6 +230,11 @@ export const updateOpenrouterConfigSchema = insertOpenrouterConfigSchema.partial
   apiKey: true,
 });
 
+export const updateCloudinaryConfigSchema = insertCloudinaryConfigSchema.partial({
+  apiKey: true,
+  apiSecret: true,
+});
+
 // Types
 export type User = typeof users.$inferSelect;
 export type InsertUser = z.infer<typeof insertUserSchema>;
@@ -251,8 +256,10 @@ export type InsertAiGeneration = z.infer<typeof insertAiGenerationSchema>;
 
 export type CloudinaryConfig = typeof cloudinaryConfig.$inferSelect;
 export type InsertCloudinaryConfig = z.infer<typeof insertCloudinaryConfigSchema>;
+export type UpdateCloudinaryConfig = z.infer<typeof updateCloudinaryConfigSchema>;
 
 export type OpenrouterConfig = typeof openrouterConfig.$inferSelect;
 export type InsertOpenrouterConfig = z.infer<typeof insertOpenrouterConfigSchema>;
+export type UpdateOpenrouterConfig = z.infer<typeof updateOpenrouterConfigSchema>;
 
 export type PostMedia = typeof postMedia.$inferSelect;