feat(admin): ручные варианты UTM и независимый редактор config (#30)

admin/tests/link-builder.php

@@ -53,7 +53,12 @@ $targets = $linkStore->read('targets.json');$targets['first']['domain']='renamed
 $renamed = $builder->get('first');
 linkCheck(str_starts_with($renamed['url'],'https://renamed.example/?') && !str_contains($renamed['url'],'first.example'), 'domain rename rebases saved URL to current origin');
 linkCheck($renamed['selection']===$modified && $renamed['saved_at']===$updated['saved_at'] && parse_url($renamed['url'],PHP_URL_QUERY)===parse_url($updated['url'],PHP_URL_QUERY), 'domain rename preserves selection, timestamp and existing query noise');
-foreach ([[], array_diff_key($selection,['focus'=>true]), $selection+['unexpected'=>'1'], array_replace($selection,['theme'=>'9']), array_replace($selection,['indpic'=>'0']), array_replace($selection,['cons'=>1]), array_replace($selection,['tp'=>'rnd&host=evil']), array_replace($selection,['reg'=>['1']])] as $invalid) {
+foreach (array_keys($selection) as $key) {
+    $manualSelection=array_fill_keys(array_keys($selection),'rnd');$manualSelection[$key]='9';
+    $manual=$builder->save('second',$manualSelection);parse_str(parse_url($manual['url'],PHP_URL_QUERY),$manualParameters);
+    linkCheck($builder->get('second')===$manual&&$manual['selection'][$key]==='9'&&$manualParameters[$key][4]==='9','manual digit 9 encodes and persists for '.$key);
+}
+foreach ([[], array_diff_key($selection,['focus'=>true]), $selection+['unexpected'=>'1'], array_replace($selection,['theme'=>'10']), array_replace($selection,['indpic'=>'0']), array_replace($selection,['cons'=>1]), array_replace($selection,['tp'=>'rnd&host=evil']), array_replace($selection,['reg'=>['1']])] as $invalid) {
     linkReject(fn()=>$builder->save('first',$invalid),'strict selection rejects missing, unknown, wrong-type or injected value');
 }
 linkReject(fn()=>$builder->get('../targets'),'target traversal rejected');