fix: show pull request unavailable state

Replace the empty PR tab with a clear unavailable message
Explain when pull request actions are available

packages/ui/src/components/views/git/PullRequestSection.tsx

@@ -1365,7 +1365,16 @@ export const PullRequestSection: React.FC<{
   }, [directory, editBody, editTitle, github, prStatusKey, refresh, scheduleActionRefresh, updatePrStatus, t]);
 
   if (!canShow) {
-    return null;
+    return (
+      <section className="border-0 bg-transparent rounded-none">
+        <div className="space-y-1 pt-3">
+          <div className="typography-ui-header font-semibold text-foreground">{t('gitView.pullRequest.title')}</div>
+          <div className="typography-micro text-muted-foreground">
+            {t('gitView.pullRequest.availableOnFeatureBranches')}
+          </div>
+        </div>
+      </section>
+    );
   }
 
   const originRepoUrl = status?.repo?.url || null;

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

@@ -674,6 +674,7 @@ export const dict = {
   'gitView.pr.toast.titleRequired': 'Title is required',
   'gitView.pr.toast.updatePrFailed': 'Failed to update pull request',
   'gitView.pullRequest.createHint': 'Create and manage pull requests from this branch.',
+  'gitView.pullRequest.availableOnFeatureBranches': 'Available when the current branch can open a pull request.',
   'gitView.pullRequest.title': 'Pull request',
   'gitView.tabs.commit': 'Commit',
   'gitView.tabs.pr': 'PR',

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

@@ -675,6 +675,7 @@ export const dict: Record<I18nKey, string> = {
   "gitView.pr.toast.titleRequired": "El título es obligatorio",
   "gitView.pr.toast.updatePrFailed": "No se pudo actualizar la PR",
   "gitView.pullRequest.createHint": "Crea y gestiona PR desde esta rama.",
+  "gitView.pullRequest.availableOnFeatureBranches": "Disponible cuando la rama actual puede abrir un PR.",
   "gitView.pullRequest.title": "PR",
   "gitView.tabs.commit": "Commit",
   "gitView.tabs.pr": "PR",

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

@@ -675,6 +675,7 @@ export const dict: Record<I18nKey, string> = {
   'gitView.pr.toast.titleRequired': '제목 필수',
   'gitView.pr.toast.updatePrFailed': 'PR 업데이트 실패',
   'gitView.pullRequest.createHint': '이 브랜치에서 PR을 만들고 관리하세요.',
+  'gitView.pullRequest.availableOnFeatureBranches': '현재 브랜치에서 PR을 열 수 있을 때 사용할 수 있습니다.',
   'gitView.pullRequest.title': 'PR',
   'gitView.tabs.commit': '커밋',
   'gitView.tabs.pr': 'PR',

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

@@ -675,6 +675,7 @@ export const dict: Record<I18nKey, string> = {
   "gitView.pr.toast.titleRequired": "O título é obrigatório",
   "gitView.pr.toast.updatePrFailed": "Não foi possível atualizar a PR",
   "gitView.pullRequest.createHint": "Crie e gerencie PRs desta branch.",
+  "gitView.pullRequest.availableOnFeatureBranches": "Disponível quando a branch atual pode abrir uma PR.",
   "gitView.pullRequest.title": "PR",
   "gitView.tabs.commit": "Commit",
   "gitView.tabs.pr": "PR",

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

@@ -675,6 +675,7 @@ export const dict: Record<I18nKey, string> = {
   "gitView.pr.toast.titleRequired": "Необхідно вказати назву",
   "gitView.pr.toast.updatePrFailed": "Не вдалося оновити PR",
   "gitView.pullRequest.createHint": "Створюйте PR з цієї гілки та керуйте ними.",
+  "gitView.pullRequest.availableOnFeatureBranches": "Доступно, коли поточна гілка може відкрити PR.",
   "gitView.pullRequest.title": "PR",
   "gitView.tabs.commit": "Коміт",
   "gitView.tabs.pr": "PR",

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

@@ -675,6 +675,7 @@ export const dict: Record<I18nKey, string> = {
   'gitView.pr.toast.titleRequired': '标题不能为空',
   'gitView.pr.toast.updatePrFailed': '更新拉取请求失败',
   'gitView.pullRequest.createHint': '从当前分支创建并管理拉取请求。',
+  'gitView.pullRequest.availableOnFeatureBranches': '当前分支可以打开 PR 时可用。',
   'gitView.pullRequest.title': '拉取请求',
   'gitView.tabs.commit': '提交',
   'gitView.tabs.pr': 'PR',