feat(provider): support additive provider key lifecycle management

Add `addToLive` parameter to add_provider so callers can opt out of
writing to the live config (e.g. when duplicating an inactive provider).
Add `originalId` parameter to update_provider to support provider key
renames — the old key is removed from live config before the new one
is written.

Frontend: ProviderForm now exposes provider-key input for openclaw app
type, and EditProviderDialog forwards originalId on save. Deep-link
import passes addToLive=true to preserve existing behavior.

src/i18n/locales/en.json

@@ -908,7 +908,8 @@
     "modelsRequired": "Please add at least one model",
     "providerKey": "Provider Key",
     "providerKeyPlaceholder": "my-provider",
-    "providerKeyHint": "Unique identifier in config file. Cannot be changed after creation. Use lowercase letters, numbers, and hyphens only.",
+    "providerKeyHint": "Unique identifier in config file. Use lowercase letters, numbers, and hyphens only.",
+    "providerKeyLockedHint": "This provider has already been added to the app config, so its key can no longer be changed.",
     "providerKeyRequired": "Provider key is required",
     "providerKeyDuplicate": "This key is already in use",
     "providerKeyInvalid": "Invalid format. Use lowercase letters, numbers, and hyphens only.",
@@ -1367,7 +1368,8 @@
     "backupCreated": "Backup created: {{path}}",
     "providerKey": "Provider Key",
     "providerKeyPlaceholder": "my-provider",
-    "providerKeyHint": "Unique identifier in config file. Cannot be changed after creation. Use lowercase letters, numbers, and hyphens only.",
+    "providerKeyHint": "Unique identifier in config file. Use lowercase letters, numbers, and hyphens only.",
+    "providerKeyLockedHint": "This provider has already been added to the app config, so its key can no longer be changed.",
     "providerKeyRequired": "Provider key is required",
     "providerKeyDuplicate": "This key is already in use",
     "providerKeyInvalid": "Invalid format. Use lowercase letters, numbers, and hyphens only.",

src/i18n/locales/ja.json

@@ -908,7 +908,8 @@
     "modelsRequired": "モデルを少なくとも1つ追加してください",
     "providerKey": "プロバイダーキー",
     "providerKeyPlaceholder": "my-provider",
-    "providerKeyHint": "設定ファイルの一意の識別子。作成後は変更できません。小文字、数字、ハイフンのみ使用できます。",
+    "providerKeyHint": "設定ファイルの一意の識別子です。小文字、数字、ハイフンのみ使用できます。",
+    "providerKeyLockedHint": "このプロバイダーは既にアプリ設定へ追加されているため、キーは変更できません。",
     "providerKeyRequired": "プロバイダーキーを入力してください",
     "providerKeyDuplicate": "このキーは既に使用されています",
     "providerKeyInvalid": "無効な形式です。小文字、数字、ハイフンのみ使用できます。",
@@ -1367,7 +1368,8 @@
     "backupCreated": "バックアップを作成しました: {{path}}",
     "providerKey": "プロバイダーキー",
     "providerKeyPlaceholder": "my-provider",
-    "providerKeyHint": "設定ファイル内のユニーク識別子。作成後は変更できません。小文字、数字、ハイフンのみ使用可能。",
+    "providerKeyHint": "設定ファイル内のユニーク識別子。小文字、数字、ハイフンのみ使用可能。",
+    "providerKeyLockedHint": "このプロバイダーは既にアプリ設定へ追加されているため、キーは変更できません。",
     "providerKeyRequired": "プロバイダーキーを入力してください",
     "providerKeyDuplicate": "このキーは既に使用されています",
     "providerKeyInvalid": "無効な形式です。小文字、数字、ハイフンのみ使用可能。",

src/i18n/locales/zh.json

@@ -908,7 +908,8 @@
     "modelsRequired": "请至少添加一个模型配置",
     "providerKey": "供应商标识",
     "providerKeyPlaceholder": "my-provider",
-    "providerKeyHint": "配置文件中的唯一标识符，创建后无法修改，只能使用小写字母、数字和连字符",
+    "providerKeyHint": "配置文件中的唯一标识符，只能使用小写字母、数字和连字符",
+    "providerKeyLockedHint": "该供应商已添加到应用配置中，供应商标识不可修改",
     "providerKeyRequired": "请填写供应商标识",
     "providerKeyDuplicate": "此标识已被使用，请更换",
     "providerKeyInvalid": "标识格式无效，只能使用小写字母、数字和连字符",
@@ -1367,7 +1368,8 @@
     "backupCreated": "已创建备份：{{path}}",
     "providerKey": "供应商标识",
     "providerKeyPlaceholder": "my-provider",
-    "providerKeyHint": "配置文件中的唯一标识符，创建后无法修改，只能使用小写字母、数字和连字符",
+    "providerKeyHint": "配置文件中的唯一标识符，只能使用小写字母、数字和连字符",
+    "providerKeyLockedHint": "该供应商已添加到应用配置中，供应商标识不可修改",
     "providerKeyRequired": "请填写供应商标识",
     "providerKeyDuplicate": "此标识已被使用，请更换",
     "providerKeyInvalid": "标识格式无效，只能使用小写字母、数字和连字符",