feat: implement MySQL driver and schema discovery service for dynamic database management

frontend/src/services/api.ts

@@ -36,7 +36,11 @@ export const SchemaService = {
   bulkAction: (data: { tables: string[], action: string, database: string }) => api.post('/schema/bulk-action', data),
   batchUpdate: (table: string, changes: any[]) => api.post(`/schema/${table}/batch-update`, { changes }),
   executeQuery: (query: string) => api.post('/schema/execute', { query }),
-  exportDatabase: (database?: string, table?: string) => api.post('/schema/export', { database, table }, { responseType: 'blob' }),
+  exportDatabase: (database?: string, table?: string, filters?: any) => api.post('/schema/export', { 
+    database, 
+    table, 
+    filters: filters ? JSON.stringify(filters) : undefined 
+  }, { responseType: 'blob' }),
   importDatabase: (formData: FormData) => api.post('/schema/import', formData, {
     headers: { 'Content-Type': 'multipart/form-data' }
   }),