fix(qenv): replace smartfile-based config loading with native fs and yaml parsing for env files

ts/qenv.plugins.ts

@@ -1,7 +1,8 @@
 // native
+import * as fs from 'node:fs';
 import * as path from 'path';
 
-export { path };
+export { fs, path };
 
 // @api.global scope
 import * as typedrequest from '@api.global/typedrequest';
@@ -11,12 +12,16 @@ export {
 }
 
 // @pushrocks scope
-import * as smartfile from '@push.rocks/smartfile';
 import * as smartlog from '@push.rocks/smartlog';
 
-export { smartfile, smartlog };
+export { smartlog };
 
 // @configvault.io scope
 import * as configvaultInterfaces from '@configvault.io/interfaces';
 
 export { configvaultInterfaces };
+
+// third party scope
+import * as yaml from 'yaml';
+
+export { yaml };