fix: 新建版本移除状态选择（规划中/开发中）

新建版本不再需要手动选择状态，直接默认为 developing。
移除状态选择器 UI 区块。

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/web/app/versions/page.tsx

@@ -595,7 +595,7 @@ function NewVersionModal({ overview, onClose, onCreate, currentUserName }: NewVe
   const [projectName, setProjectName] = useState('');
   const [iterationType, setIterationType] = useState<IterationType | ''>('');
   const [versionNumber, setVersionNumber] = useState('');
-  const [status, setStatus] = useState<VersionStatus>('planned');
+  const [status] = useState<VersionStatus>('developing');
   const [priority, setPriority] = useState<Priority>('P2');
   const [expectedReleaseDate, setExpectedReleaseDate] = useState('');
   const [submitting, setSubmitting] = useState(false);
@@ -712,19 +712,7 @@ function NewVersionModal({ overview, onClose, onCreate, currentUserName }: NewVe
           </div>
 
           {/* 状态 */}
-          <div>
-            <label className="mb-1.5 block text-[12px] font-medium text-[var(--ink-soft)]">状态</label>
-            <div className="flex gap-2">
-              {([
-                { key: 'planned' as VersionStatus, label: '规划中' },
-                { key: 'developing' as VersionStatus, label: '开发中' },
-              ]).map((opt) => (
-                <button key={opt.key} onClick={() => setStatus(opt.key)} className={`flex-1 h-9 rounded-lg border px-3 text-[12px] transition-colors ${status === opt.key ? 'border-[var(--accent)] bg-[var(--accent-soft)] text-[var(--accent)]' : 'border-[var(--line)] bg-[var(--bg-card)] text-[var(--ink-soft)] hover:border-[var(--accent)]'}`}>
-                  {opt.label}
-                </button>
-              ))}
-            </div>
-          </div>
+
 
           {/* 优先级 */}
           <div>