fix: 完善剧本完成状态限制并优化表单对齐与配色

src/features/projects/access.ts

@@ -0,0 +1,16 @@
+import type { InjectionKey, ShallowRef } from 'vue'
+import type { Project } from './types'
+
+/** 由项目布局发布给应用侧栏的访问状态；不额外请求或持久化项目数据。 */
+export interface ProjectAccess {
+    projectId: string
+    completed: boolean
+}
+
+/** 侧栏与项目布局共享同一份判定，初次读取和切换项目时默认锁定。 */
+export const projectAccessKey: InjectionKey<ShallowRef<ProjectAccess | null>> = Symbol('project-access')
+
+/** 仅正式项目状态 completed 解锁下游；已有部分剧集或旧 checkpoint 不代表剧本完成。 */
+export function isProjectComplete(project: Pick<Project, 'id' | 'status'> | null, projectId: string): boolean {
+    return !!projectId && project?.id === projectId && project.status === 'completed'
+}