feat(i18n): update video status messages and add thumbnail placeholder

- Simplify "failed" status message across languages
- Add thumbnail placeholder text for all locales
- Add error messages for image reference uploads in zh-cn

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

@@ -4674,10 +4674,13 @@
     "status": {
       "completed": "Generation Completed",
       "downloading": "Downloading",
-      "failed": "Failed to generate video",
+      "failed": "Generation Failed",
       "in_progress": "Generating",
       "queued": "Queued"
     },
+    "thumbnail": {
+      "placeholder": "No thumbnail"
+    },
     "title": "Video",
     "undefined": "No available video"
   },

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

@@ -4659,6 +4659,10 @@
     },
     "input_reference": {
       "add": {
+        "error": {
+          "format": "需要上传图片格式的文件",
+          "size": "图片过大，应小于 5MB"
+        },
         "tooltip": "添加图像参考"
       }
     },
@@ -4670,10 +4674,13 @@
     "status": {
       "completed": "生成完成",
       "downloading": "下载中",
-      "failed": "视频生成失败",
+      "failed": "生成失败",
       "in_progress": "生成中",
       "queued": "排队中"
     },
+    "thumbnail": {
+      "placeholder": "无缩略图"
+    },
     "title": "视频",
     "undefined": "无可用视频"
   },

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

@@ -4659,6 +4659,10 @@
     },
     "input_reference": {
       "add": {
+        "error": {
+          "format": "[to be translated]:Not a image",
+          "size": "[to be translated]:This image is too large. It should be under 5MB."
+        },
         "tooltip": "[to be translated]:Add image reference"
       }
     },
@@ -4674,6 +4678,9 @@
       "in_progress": "[to be translated]:Generating",
       "queued": "[to be translated]:Queued"
     },
+    "thumbnail": {
+      "placeholder": "[to be translated]:No thumbnail"
+    },
     "title": "[to be translated]:Video",
     "undefined": "[to be translated]:No available video"
   },

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

@@ -4659,6 +4659,10 @@
     },
     "input_reference": {
       "add": {
+        "error": {
+          "format": "[to be translated]:Not a image",
+          "size": "[to be translated]:This image is too large. It should be under 5MB."
+        },
         "tooltip": "[to be translated]:Add image reference"
       }
     },
@@ -4674,6 +4678,9 @@
       "in_progress": "[to be translated]:Generating",
       "queued": "[to be translated]:Queued"
     },
+    "thumbnail": {
+      "placeholder": "[to be translated]:No thumbnail"
+    },
     "title": "[to be translated]:Video",
     "undefined": "[to be translated]:No available video"
   },

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

@@ -4659,6 +4659,10 @@
     },
     "input_reference": {
       "add": {
+        "error": {
+          "format": "[to be translated]:Not a image",
+          "size": "[to be translated]:This image is too large. It should be under 5MB."
+        },
         "tooltip": "[to be translated]:Add image reference"
       }
     },
@@ -4674,6 +4678,9 @@
       "in_progress": "[to be translated]:Generating",
       "queued": "[to be translated]:Queued"
     },
+    "thumbnail": {
+      "placeholder": "[to be translated]:No thumbnail"
+    },
     "title": "[to be translated]:Video",
     "undefined": "[to be translated]:No available video"
   },

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

@@ -4659,6 +4659,10 @@
     },
     "input_reference": {
       "add": {
+        "error": {
+          "format": "[to be translated]:Not a image",
+          "size": "[to be translated]:This image is too large. It should be under 5MB."
+        },
         "tooltip": "[to be translated]:Add image reference"
       }
     },
@@ -4674,6 +4678,9 @@
       "in_progress": "[to be translated]:Generating",
       "queued": "[to be translated]:Queued"
     },
+    "thumbnail": {
+      "placeholder": "[to be translated]:No thumbnail"
+    },
     "title": "[to be translated]:Video",
     "undefined": "[to be translated]:No available video"
   },

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

@@ -4659,6 +4659,10 @@
     },
     "input_reference": {
       "add": {
+        "error": {
+          "format": "[to be translated]:Not a image",
+          "size": "[to be translated]:This image is too large. It should be under 5MB."
+        },
         "tooltip": "[to be translated]:Add image reference"
       }
     },
@@ -4674,6 +4678,9 @@
       "in_progress": "[to be translated]:Generating",
       "queued": "[to be translated]:Queued"
     },
+    "thumbnail": {
+      "placeholder": "[to be translated]:No thumbnail"
+    },
     "title": "[to be translated]:Video",
     "undefined": "[to be translated]:No available video"
   },

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

@@ -4659,6 +4659,10 @@
     },
     "input_reference": {
       "add": {
+        "error": {
+          "format": "[to be translated]:Not a image",
+          "size": "[to be translated]:This image is too large. It should be under 5MB."
+        },
         "tooltip": "[to be translated]:Add image reference"
       }
     },
@@ -4674,6 +4678,9 @@
       "in_progress": "[to be translated]:Generating",
       "queued": "[to be translated]:Queued"
     },
+    "thumbnail": {
+      "placeholder": "[to be translated]:No thumbnail"
+    },
     "title": "[to be translated]:Video",
     "undefined": "[to be translated]:No available video"
   },

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

@@ -4659,6 +4659,10 @@
     },
     "input_reference": {
       "add": {
+        "error": {
+          "format": "[to be translated]:Not a image",
+          "size": "[to be translated]:This image is too large. It should be under 5MB."
+        },
         "tooltip": "[to be translated]:Add image reference"
       }
     },
@@ -4674,6 +4678,9 @@
       "in_progress": "[to be translated]:Generating",
       "queued": "[to be translated]:Queued"
     },
+    "thumbnail": {
+      "placeholder": "[to be translated]:No thumbnail"
+    },
     "title": "[to be translated]:Video",
     "undefined": "[to be translated]:No available video"
   },