Remove the 5-model limit on multi-run groups

The per-group cap of 5 models was enforced in three client-side locations with no server-side constraint and no technical justification; the store iterates models in a plain loop and dispatches each run via Promise.allSettled. Remove the cap entirely from MultiRunLauncher, useMultiRunStore, and AgentManagerEmptyState, and drop the {max} ceiling from the launcher info copy across all locales.

Closes #2847

packages/ui/src/lib/i18n/messages/en.ts

@@ -369,7 +369,7 @@ export const dict = {
   'multirun.launcher.attachments.attach': 'Attach',
   'multirun.launcher.attachments.tooltip': 'Same files sent to all runs',
   'multirun.launcher.models.label': 'Models',
-  'multirun.launcher.models.info': 'Select 2-{max} models. Same model can be added multiple times.',
+  'multirun.launcher.models.info': 'Select 2 or more models. Same model can be added multiple times.',
   'multirun.launcher.toast.fileTooLarge': 'File "{fileName}" is too large (max 10MB)',
   'multirun.launcher.toast.attachFailed': 'Failed to attach "{fileName}"',
   'multirun.launcher.toast.attachedSingle': 'Attached {count} file',

packages/ui/src/lib/i18n/messages/es.ts

@@ -370,7 +370,7 @@ export const dict: Record<I18nKey, string> = {
   "multirun.launcher.attachments.attach": "Adjuntar",
   "multirun.launcher.attachments.tooltip": "Archivos idénticos enviados a todas las ejecuciones",
   "multirun.launcher.models.label": "Modelos",
-  "multirun.launcher.models.info": "Selecciona 2-{max} modelos. El mismo modelo puede añadirse varias veces.",
+  "multirun.launcher.models.info": "Selecciona 2 o más modelos. El mismo modelo puede añadirse varias veces.",
   "multirun.launcher.toast.fileTooLarge": "El archivo \"{fileName}\" es demasiado grande (máximo 10MB)",
   "multirun.launcher.toast.attachFailed": "No se pudo adjuntar \"{fileName}\"",
   "multirun.launcher.toast.attachedSingle": "Archivo adjuntado ({count})",

packages/ui/src/lib/i18n/messages/fr.ts

@@ -201,7 +201,7 @@ export const dict = {
   'multirun.launcher.attachments.attach': 'Attacher',
   'multirun.launcher.attachments.tooltip': 'Mêmes fichiers envoyés à toutes les exécutions',
   'multirun.launcher.models.label': 'Modèles',
-  'multirun.launcher.models.info': 'Sélectionnez les modèles 2-{max}. Le même modèle peut être ajouté plusieurs fois.',
+  'multirun.launcher.models.info': 'Sélectionnez 2 modèles ou plus. Le même modèle peut être ajouté plusieurs fois.',
   'multirun.launcher.toast.fileTooLarge': 'Le fichier "{fileName}" est trop volumineux (max 10 Mo)',
   'multirun.launcher.toast.attachFailed': 'Échec de la connexion de "{fileName}"',
   'multirun.launcher.toast.attachedSingle': 'Fichier {count} joint',

packages/ui/src/lib/i18n/messages/ko.ts

@@ -370,7 +370,7 @@ export const dict: Record<I18nKey, string> = {
   'multirun.launcher.attachments.attach': '첨부',
   'multirun.launcher.attachments.tooltip': '같은 파일을 모든 실행에 보냅니다',
   'multirun.launcher.models.label': '모델',
-  'multirun.launcher.models.info': '모델을 2~{max}개 선택하세요. 같은 모델을 여러 번 추가할 수 있습니다.',
+  'multirun.launcher.models.info': '모델을 2개 이상 선택하세요. 같은 모델을 여러 번 추가할 수 있습니다.',
   'multirun.launcher.toast.fileTooLarge': '파일 "{fileName}"이 너무 큽니다(최대 10MB)',
   'multirun.launcher.toast.attachFailed': '"{fileName}" 첨부 실패',
   'multirun.launcher.toast.attachedSingle': '파일 {count}개 첨부됨',

packages/ui/src/lib/i18n/messages/pl.ts

@@ -497,7 +497,7 @@ export const dict: Record<I18nKey, string> = {
   'multirun.launcher.attachments.attach': 'Dołącz',
   'multirun.launcher.attachments.tooltip': 'Te same pliki wysłane do wszystkich uruchomień',
   'multirun.launcher.models.label': 'Modele',
-  'multirun.launcher.models.info': 'Wybierz od 2 do {max} modeli. Ten sam model może być dodany wielokrotnie.',
+  'multirun.launcher.models.info': 'Wybierz 2 lub więcej modeli. Ten sam model może być dodany wielokrotnie.',
   'multirun.launcher.toast.fileTooLarge': 'Plik "{fileName}" jest zbyt duży (max 10MB)',
   'multirun.launcher.toast.attachFailed': 'Nie udało się dołączyć "{fileName}"',
   'multirun.launcher.toast.attachedSingle': 'Dołączono {count} plik',

packages/ui/src/lib/i18n/messages/pt-BR.ts

@@ -370,7 +370,7 @@ export const dict: Record<I18nKey, string> = {
   "multirun.launcher.attachments.attach": "Anexar",
   "multirun.launcher.attachments.tooltip": "Arquivos idênticos enviados a todas as execuções",
   "multirun.launcher.models.label": "Modelos",
-  "multirun.launcher.models.info": "Selecione 2-{max} modelos. O mesmo modelo pode ser adicionado várias vezes.",
+  "multirun.launcher.models.info": "Selecione 2 ou mais modelos. O mesmo modelo pode ser adicionado várias vezes.",
   "multirun.launcher.toast.fileTooLarge": "O arquivo \"{fileName}\" é grande demais (máximo 10MB)",
   "multirun.launcher.toast.attachFailed": "Não foi possível anexar \"{fileName}\"",
   "multirun.launcher.toast.attachedSingle": "Arquivo anexado ({count})",

packages/ui/src/lib/i18n/messages/uk.ts

@@ -370,7 +370,7 @@ export const dict: Record<I18nKey, string> = {
   "multirun.launcher.attachments.attach": "Прикріпити",
   "multirun.launcher.attachments.tooltip": "Ті самі файли буде надіслано в усі запуски",
   "multirun.launcher.models.label": "Моделі",
-  "multirun.launcher.models.info": "Вибрати моделі 2-{max}. Ту саму модель можна додавати кілька разів.",
+  "multirun.launcher.models.info": "Вибрати 2 або більше моделей. Ту саму модель можна додавати кілька разів.",
   "multirun.launcher.toast.fileTooLarge": "Файл \"{fileName}\" завеликий (макс. 10 МБ)",
   "multirun.launcher.toast.attachFailed": "Не вдалося вкласти \"{fileName}\"",
   "multirun.launcher.toast.attachedSingle": "Прикріплено файл: {count}",

packages/ui/src/lib/i18n/messages/zh-CN.ts

@@ -370,7 +370,7 @@ export const dict: Record<I18nKey, string> = {
   'multirun.launcher.attachments.attach': '附加',
   'multirun.launcher.attachments.tooltip': '相同文件会发送到所有运行',
   'multirun.launcher.models.label': '模型',
-  'multirun.launcher.models.info': '选择 2-{max} 个模型。同一模型可重复添加。',
+  'multirun.launcher.models.info': '选择 2 个或更多模型。同一模型可重复添加。',
   'multirun.launcher.toast.fileTooLarge': '文件“{fileName}”过大（最大 10MB）',
   'multirun.launcher.toast.attachFailed': '附加“{fileName}”失败',
   'multirun.launcher.toast.attachedSingle': '已附加 {count} 个文件',

packages/ui/src/lib/i18n/messages/zh-TW.ts

@@ -383,7 +383,7 @@ export const dict: Record<I18nKey, string> = {
   'multirun.launcher.attachments.attach': '附加',
   'multirun.launcher.attachments.tooltip': '相同檔案會傳送到所有執行',
   'multirun.launcher.models.label': '模型',
-  'multirun.launcher.models.info': '選擇 2-{max} 個模型。同一模型可重複加入。',
+  'multirun.launcher.models.info': '選擇 2 個或更多模型。同一模型可重複加入。',
   'multirun.launcher.toast.fileTooLarge': '檔案「{fileName}」過大（最大 10MB）',
   'multirun.launcher.toast.attachFailed': '附加「{fileName}」失敗',
   'multirun.launcher.toast.attachedSingle': '已附加 {count} 個檔案',