fix:Add a new vendor page, API endpoint, and model name. (#1155)

* fix:Add a new vendor page, API endpoint, and model name. Fix the bug where, after entering characters, line breaks cannot be fully deleted.

* fix: add missing i18n key codexConfig.modelNameHint for zh/en/ja

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Co-authored-by: Jason <farion1231@gmail.com>

src/components/providers/forms/CodexFormFields.tsx

@@ -117,9 +117,13 @@ export function CodexFormFields({
             className="w-full px-3 py-2 border border-border-default bg-background text-foreground rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 transition-colors"
           />
           <p className="text-xs text-muted-foreground">
-            {t("codexConfig.modelNameHint", {
-              defaultValue: "指定使用的模型，将自动更新到 config.toml 中",
-            })}
+            {modelName.trim()
+              ? t("codexConfig.modelNameHint", {
+                  defaultValue: "指定使用的模型，将自动更新到 config.toml 中",
+                })
+              : t("providerForm.modelHint", {
+                  defaultValue: "💡 留空将使用供应商的默认模型",
+                })}
           </p>
         </div>
       )}