fix: 完善剧本完成状态限制并优化表单对齐与配色

src/features/storyboard/StoryboardPage.vue

@@ -176,7 +176,7 @@ watch(
                                 <NCheckbox
                                     v-model:checked="force"
                                     :disabled="operation.pending"
-                                    class="flex items-center gap-2 pb-3 text-xs"
+                                    class="control-row-checkbox text-xs"
                                     >批量覆盖已有结果</NCheckbox
                                 >
                             </div>

src/features/storyboard/useStoryboard.ts

@@ -72,7 +72,7 @@ export function useStoryboard() {
             !!context.error.value ||
             !!query.error.value ||
             !data.value ||
-            context.project.value?.status === 'generating' ||
+            context.project.value?.status !== 'completed' ||
             prerequisites.value.breakdownRunning
     )
     const directionComplete = computed(