diff --git a/src/components/ai/ChatInput.vue b/src/components/ai/ChatInput.vue
index 42bc265..9e779e1 100644
--- a/src/components/ai/ChatInput.vue
+++ b/src/components/ai/ChatInput.vue
@@ -119,7 +119,7 @@ import { ref, computed, nextTick, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useAiStore } from '../../stores/ai'
 import { useProjectStore } from '../../stores/project'
-import type { AiMessage, ContentPart, SkillInfo, ProjectRecord, TaskRecord } from '../../api/types'
+import type { AiMessage, ContentPart, SkillInfo, ProjectRecord, TaskRecord, IdeaRecord } from '../../api/types'
 
 const props = defineProps<{
   /** UX-09: 编辑末条 user 消息态;父持有,handleSend 据此走 editMessage 而非 sendMessage */
@@ -324,7 +324,7 @@ function clearSkill() {
 // 触发:输入框光标前最近的 @ 后无空白/换行 → 激活;Esc/光标移开/选中插入 → 关闭。
 // Enter 不冲突:popover 开时 Enter 插入选中(覆盖发送),关时 Enter 发送(原逻辑)。
 interface MentionItem {
-  type: 'project' | 'task'
+  type: 'project' | 'task' | 'idea'
   /** 扁平后唯一 key(用于 key/导航扁平索引定位) */
   uid: string
   /** 实体原始 id(供后端解析,目前仅插入 [类型:名] 文本,id 未透传) */
@@ -342,6 +342,7 @@ const mentionStart = ref(-1)
 const mentionGroupLabel = computed(() => ({
   project: t('aiChat.mentionGroupProject'),
   task: t('aiChat.mentionGroupTask'),
+  idea: t('aiChat.mentionGroupIdea'),
 }))
 
 /** 当前 @ 查询文本(@ 之后的串,不含 @) */
@@ -378,19 +379,33 @@ const mentionItems = computed<MentionItem[]>(() => {
       desc: tk.description || '',
       typeLabel: t('aiChat.mentionGroupTask'),
     }))
-  return [...projectItems, ...taskItems]
+  const ideas = (projectsStore.ideas || []) as IdeaRecord[]
+  const ideaItems: MentionItem[] = ideas
+    .filter(it => match(it.title) || match(it.description || ''))
+    .slice(0, 20)
+    .map(it => ({
+      type: 'idea' as const,
+      uid: 'i-' + it.id,
+      id: it.id,
+      name: it.title,
+      desc: it.description || '',
+      typeLabel: t('aiChat.mentionGroupIdea'),
+    }))
+  return [...projectItems, ...taskItems, ...ideaItems]
 })
 
 /** 联想候选总数(未过滤,用于区分"无匹配" vs "空") */
 const mentionTotal = computed(() =>
   ((projectsStore.projects || []) as ProjectRecord[]).length
-  + ((projectsStore.tasks || []) as TaskRecord[]).length,
+  + ((projectsStore.tasks || []) as TaskRecord[]).length
+  + ((projectsStore.ideas || []) as IdeaRecord[]).length,
 )
 
 /** 按类型分组(模板按组渲染组标题) */
 const mentionGroups = computed(() => [
   { key: 'project', label: mentionGroupLabel.value.project, items: mentionItems.value.filter(i => i.type === 'project') },
   { key: 'task', label: mentionGroupLabel.value.task, items: mentionItems.value.filter(i => i.type === 'task') },
+  { key: 'idea', label: mentionGroupLabel.value.idea, items: mentionItems.value.filter(i => i.type === 'idea') },
 ])
 
 /** 扁平下标(组内 item 在扁平列表中的位置,供键盘导航 ↑↓/高亮) */
@@ -405,7 +420,9 @@ function selectMention(item: MentionItem) {
   const after = inputText.value.slice(cursorAfter)
   const label = item.type === 'project'
     ? `[${t('aiChat.mentionGroupProject')}: ${item.name}]`
-    : `[${t('aiChat.mentionGroupTask')}: ${item.name}]`
+    : item.type === 'task'
+      ? `[${t('aiChat.mentionGroupTask')}: ${item.name}]`
+      : `[${t('aiChat.mentionGroupIdea')}: ${item.name}]`
   inputText.value = before + label + ' ' + after
   mentionOpen.value = false
   mentionStart.value = -1
diff --git a/src/i18n/en/aiChat.ts b/src/i18n/en/aiChat.ts
index 6caf7b9..811c327 100644
--- a/src/i18n/en/aiChat.ts
+++ b/src/i18n/en/aiChat.ts
@@ -90,6 +90,7 @@ export default {
     mentionHint: "{'@'} to mention project/task",
     mentionGroupProject: 'Projects',
     mentionGroupTask: 'Tasks',
+    mentionGroupIdea: 'Ideas',
     mentionNoMatch: 'No matching entity',
     mentionEmpty: 'No project/task to mention',
 
diff --git a/src/i18n/zh-CN/aiChat.ts b/src/i18n/zh-CN/aiChat.ts
index d913ff5..802a648 100644
--- a/src/i18n/zh-CN/aiChat.ts
+++ b/src/i18n/zh-CN/aiChat.ts
@@ -90,6 +90,7 @@ export default {
     mentionHint: "{'@'} 引用项目/任务",
     mentionGroupProject: '项目',
     mentionGroupTask: '任务',
+    mentionGroupIdea: '灵感',
     mentionNoMatch: '无匹配实体',
     mentionEmpty: '暂无可引用的项目/任务',