修复: 2196c77 workflow整文件替换回退恢复+scrollToBottom smooth+truncated标志

根因: 批次1 workflow(2196c77)做 @/ 路径统一时对 AiChat.vue/Ideas.vue
做了整文件替换(非手术式编辑),把 6254d06 之后积累的功能改动全部抹掉。

AiChat.vue 恢复 12 项功能:
- row-reverse 用户头像右侧布局
- groupedActive 对话按今天/昨天/更早分组
- archivedConvs 归档分组(可折叠)
- confirmClearChat 清空对话二次确认
- showBackToBottom 回到底部按钮(含 smooth 参数)
- queue UI 生成中消息排队可视化
- 技能联想(/ 触发浮层)
- token-usage 展示
- .ai-conv-group/item-actions/back-to-bottom/queue/skill 样式组
- onBeforeUnmount 补 stopListener() (CR-24 回归修复)

Ideas.vue 恢复 i18n/useConfirm/useRendered/过滤器/晋升逻辑

新增:
- F-260615-03 list工具 truncated 截断标志(tool_registry.rs)
- AR-8-scroll scrollToBottom 加 smooth 参数支持平滑滚动

vue-tsc 0 err / cargo check 0 err

src-tauri/src/commands/ai/tool_registry.rs

@@ -140,20 +140,22 @@ pub fn build_ai_tool_registry(db: &Arc<Database>) -> AiToolRegistry {
 
     // ── 只读 (Low) ──
     registry.register(
-        "list_projects", "列出所有项目，返回项目列表（ID、名称、状态、描述）",
+        "list_projects", "列出所有项目，返回项目列表（ID、名称、状态、描述）。最多返回 50 条",
         df_ai::ai_tools::object_schema(vec![]), RiskLevel::Low,
         { let db = db.clone(); Box::new(move |_args: serde_json::Value| {
             let db = db.clone();
             Box::pin(async move {
                 let repo = df_storage::crud::ProjectRepo::new(&db);
                 let mut items = repo.list_active().await?; // list_active 排除回收站(deleted_at)，防 LLM 看到已软删项目
+                let total = items.len();
+                let truncated = total > 50;
                 items.truncate(50); // 防 LLM context 膨胀
-                Ok(serde_json::to_value(items)?)
+                Ok(serde_json::json!({ "items": items, "truncated": truncated }))
             })
         })},
     );
     registry.register(
-        "list_tasks", "列出任务，可按 project_id 筛选",
+        "list_tasks", "列出任务，可按 project_id 筛选。最多返回 50 条",
         df_ai::ai_tools::object_schema(vec![("project_id", "string", false)]), RiskLevel::Low,
         { let db = db.clone(); Box::new(move |args: serde_json::Value| {
             let db = db.clone();
@@ -164,21 +166,25 @@ pub fn build_ai_tool_registry(db: &Arc<Database>) -> AiToolRegistry {
                 } else {
                     repo.list_all().await?
                 };
+                let total = tasks.len();
+                let truncated = total > 50;
                 tasks.truncate(50); // 防 LLM context 膨胀
-                Ok(serde_json::to_value(tasks)?)
+                Ok(serde_json::json!({ "items": tasks, "truncated": truncated }))
             })
         })},
     );
     registry.register(
-        "list_ideas", "列出所有灵感",
+        "list_ideas", "列出所有灵感。最多返回 50 条",
         df_ai::ai_tools::object_schema(vec![]), RiskLevel::Low,
         { let db = db.clone(); Box::new(move |_args: serde_json::Value| {
             let db = db.clone();
             Box::pin(async move {
                 let repo = df_storage::crud::IdeaRepo::new(&db);
                 let mut items = repo.list_all().await?;
+                let total = items.len();
+                let truncated = total > 50;
                 items.truncate(50); // 防 LLM context 膨胀
-                Ok(serde_json::to_value(items)?)
+                Ok(serde_json::json!({ "items": items, "truncated": truncated }))
             })
         })},
     );