feat: implement dynamic database management via MySQL driver and API controllers

backend/app/Http/Controllers/Api/SchemaController.php

@@ -109,7 +109,7 @@ class SchemaController extends Controller
     {
         try {
             $this->initializeDriver($request);
-            $config = $request->only(['host', 'username', 'password', 'database', 'port']);
+            $config = $request->only(['host', 'username', 'password', 'database', 'port', 'table']);
             $filePath = $this->databaseService->export($config);
             
             return Response::download($filePath)->deleteFileAfterSend(true);
@@ -154,4 +154,26 @@ class SchemaController extends Controller
             return Response::json(['error' => $e->getMessage()], 400);
         }
     }
+
+    public function tableMetadata(Request $request, $database, $table)
+    {
+        try {
+            $request->merge(['database' => $database]);
+            $this->initializeDriver($request);
+            return Response::json($this->databaseService->getTableMetadata($database, $table));
+        } catch (\Exception $e) {
+            return Response::json(['error' => $e->getMessage()], 400);
+        }
+    }
+
+    public function truncate(Request $request, $table)
+    {
+        try {
+            $this->initializeDriver($request);
+            $this->databaseService->truncateTable($table);
+            return Response::json(['message' => "Table '{$table}' truncated successfully"]);
+        } catch (\Exception $e) {
+            return Response::json(['error' => $e->getMessage()], 400);
+        }
+    }
 }