feat(i18n): add new translation keys for agent errors and session management

Add "failed" error message for agent addition and implement session-related translations including delete confirmation and labels

src/renderer/src/i18n/locales/en-us.json

@@ -2,6 +2,7 @@
   "agent": {
     "add": {
       "error": {
+        "failed": "Failed to add agent",
         "invalid_agent": "Invalid Agent"
       },
       "title": "Add Agent",

src/renderer/src/i18n/locales/zh-cn.json

@@ -2,6 +2,7 @@
   "agent": {
     "add": {
       "error": {
+        "failed": "添加 Agent 失败",
         "invalid_agent": "无效的 Agent"
       },
       "title": "添加 Agent",
@@ -16,6 +17,14 @@
     },
     "edit": {
       "title": "编辑 Agent"
+    },
+    "session": {
+      "delete": {
+        "content": "确定要删除此会话吗？",
+        "title": "删除会话"
+      },
+      "label_one": "会话",
+      "label_other": "会话"
     }
   },
   "agents": {

src/renderer/src/i18n/locales/zh-tw.json

@@ -2,6 +2,7 @@
   "agent": {
     "add": {
       "error": {
+        "failed": "[to be translated]:Failed to add agent",
         "invalid_agent": "無效的 Agent"
       },
       "title": "新增代理",
@@ -16,6 +17,14 @@
     },
     "edit": {
       "title": "編輯 Agent"
+    },
+    "session": {
+      "delete": {
+        "content": "[to be translated]:Are you sure to delete this session?",
+        "title": "[to be translated]:Delete session"
+      },
+      "label_one": "[to be translated]:Session",
+      "label_other": "[to be translated]:Sessions"
     }
   },
   "agents": {

src/renderer/src/i18n/translate/el-gr.json

@@ -2,6 +2,7 @@
   "agent": {
     "add": {
       "error": {
+        "failed": "[to be translated]:Failed to add agent",
         "invalid_agent": "Μη έγκυρος Agent"
       },
       "title": "Προσθήκη Agent",
@@ -16,6 +17,14 @@
     },
     "edit": {
       "title": "Επεξεργαστής Agent"
+    },
+    "session": {
+      "delete": {
+        "content": "[to be translated]:Are you sure to delete this session?",
+        "title": "[to be translated]:Delete session"
+      },
+      "label_one": "[to be translated]:Session",
+      "label_other": "[to be translated]:Sessions"
     }
   },
   "agents": {

src/renderer/src/i18n/translate/es-es.json

@@ -2,6 +2,7 @@
   "agent": {
     "add": {
       "error": {
+        "failed": "[to be translated]:Failed to add agent",
         "invalid_agent": "Agent inválido"
       },
       "title": "Agregar Agente",
@@ -16,6 +17,14 @@
     },
     "edit": {
       "title": "Agent de edición"
+    },
+    "session": {
+      "delete": {
+        "content": "[to be translated]:Are you sure to delete this session?",
+        "title": "[to be translated]:Delete session"
+      },
+      "label_one": "[to be translated]:Session",
+      "label_other": "[to be translated]:Sessions"
     }
   },
   "agents": {

src/renderer/src/i18n/translate/fr-fr.json

@@ -2,6 +2,7 @@
   "agent": {
     "add": {
       "error": {
+        "failed": "[to be translated]:Failed to add agent",
         "invalid_agent": "Agent invalide"
       },
       "title": "Ajouter un agent",
@@ -16,6 +17,14 @@
     },
     "edit": {
       "title": "Éditer Agent"
+    },
+    "session": {
+      "delete": {
+        "content": "[to be translated]:Are you sure to delete this session?",
+        "title": "[to be translated]:Delete session"
+      },
+      "label_one": "[to be translated]:Session",
+      "label_other": "[to be translated]:Sessions"
     }
   },
   "agents": {

src/renderer/src/i18n/translate/ja-jp.json

@@ -2,6 +2,7 @@
   "agent": {
     "add": {
       "error": {
+        "failed": "[to be translated]:Failed to add agent",
         "invalid_agent": "無効なエージェント"
       },
       "title": "エージェントを追加",
@@ -16,6 +17,14 @@
     },
     "edit": {
       "title": "編集エージェント"
+    },
+    "session": {
+      "delete": {
+        "content": "[to be translated]:Are you sure to delete this session?",
+        "title": "[to be translated]:Delete session"
+      },
+      "label_one": "[to be translated]:Session",
+      "label_other": "[to be translated]:Sessions"
     }
   },
   "agents": {

src/renderer/src/i18n/translate/pt-pt.json

@@ -2,6 +2,7 @@
   "agent": {
     "add": {
       "error": {
+        "failed": "[to be translated]:Failed to add agent",
         "invalid_agent": "Agent inválido"
       },
       "title": "Adicionar Agente",
@@ -16,6 +17,14 @@
     },
     "edit": {
       "title": "Agent Editor"
+    },
+    "session": {
+      "delete": {
+        "content": "[to be translated]:Are you sure to delete this session?",
+        "title": "[to be translated]:Delete session"
+      },
+      "label_one": "[to be translated]:Session",
+      "label_other": "[to be translated]:Sessions"
     }
   },
   "agents": {

src/renderer/src/i18n/translate/ru-ru.json

@@ -2,6 +2,7 @@
   "agent": {
     "add": {
       "error": {
+        "failed": "[to be translated]:Failed to add agent",
         "invalid_agent": "Недействительный агент"
       },
       "title": "Добавить агента",
@@ -16,6 +17,14 @@
     },
     "edit": {
       "title": "Редактировать агент"
+    },
+    "session": {
+      "delete": {
+        "content": "[to be translated]:Are you sure to delete this session?",
+        "title": "[to be translated]:Delete session"
+      },
+      "label_one": "[to be translated]:Session",
+      "label_other": "[to be translated]:Sessions"
     }
   },
   "agents": {