refactor(dev-task): 去掉"已完成"状态，"已提测"作为终态

DevTask 状态简化为：待开发 → 开发中 → 自测 → 已提测（终态）

- 提测即代表开发交付完成，不需要额外的"已完成"
- 测试通过/失败产生的是 Bug，不影响 DevTask 状态
- 移除 TestCaseStore 中的自动完成副作用（不再需要）
- 版本执行态推导规则同步更新

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

apps/web/lib/dev-task.ts

@@ -1,6 +1,6 @@
 import type { Priority } from './derive';
 
-export type DevTaskStatus = 'todo' | 'in_progress' | 'testing' | 'submitted' | 'done';
+export type DevTaskStatus = 'todo' | 'in_progress' | 'testing' | 'submitted';
 
 export interface DevTask {
   id: string;
@@ -33,32 +33,28 @@ export const DEV_TASK_STATUS_LABEL: Record<DevTaskStatus, string> = {
   todo: '待开发',
   in_progress: '开发中',
   testing: '自测',
-  submitted: '提测',
-  done: '已完成',
+  submitted: '已提测',
 };
 
 export const DEV_TASK_STATUS_COLOR: Record<DevTaskStatus, string> = {
   todo: 'bg-zinc-100 text-zinc-600',
   in_progress: 'bg-blue-50 text-blue-600',
   testing: 'bg-purple-50 text-purple-600',
-  submitted: 'bg-orange-50 text-orange-600',
-  done: 'bg-emerald-50 text-emerald-600',
+  submitted: 'bg-emerald-50 text-emerald-600',
 };
 
 export const STATUS_PROGRESS: Record<DevTaskStatus, number> = {
   todo: 0,
   in_progress: 50,
   testing: 80,
-  submitted: 90,
-  done: 100,
+  submitted: 100,
 };
 
 export const ALLOWED_TRANSITIONS: Record<DevTaskStatus, DevTaskStatus[]> = {
   todo: ['in_progress'],
   in_progress: ['testing'],
   testing: ['submitted', 'in_progress'],
-  submitted: ['done', 'in_progress'],
-  done: [],
+  submitted: [],
 };
 
 export function canTransition(from: DevTaskStatus, to: DevTaskStatus): boolean {