fix: reduce repeated explanations and clarify member activity

AGENTS.md

@@ -21,7 +21,7 @@ For the console app, run `cd apps/undefined-console && npm ci && npm run check`.
 For the native chat client, run `cd apps/undefined-chat && npm ci && npm run check` (Biome + TypeScript + Vitest unit/e2e + `cargo fmt --check`/`cargo check`/`cargo test`). Use `npm run tauri:dev` for the desktop shell.
 
 ## Coding Style & Naming Conventions
-Use 4-space indentation. Python code must be fully type-annotated and pass strict mypy checks. Disk I/O should go through `src/Undefined/utils/io.py` so writes stay async-safe and atomic. Follow `snake_case` for modules and functions, `PascalCase` for classes, and prefer extending existing services/helpers over introducing one-off abstractions. Skills handlers must not import repo-local modules outside `skills/`; pass dependencies through the execution context instead. WebUI JavaScript in `src/Undefined/webui/static/js/` is formatted with Biome, and `apps/undefined-console/` changes must satisfy Biome, TypeScript, and Cargo checks.
+Use 4-space indentation. Python code must be fully type-annotated and pass strict mypy checks. Disk I/O should go through `src/Undefined/utils/io.py` so writes stay async-safe and atomic. Follow `snake_case` for modules and functions, `PascalCase` for classes, and prefer extending existing services/helpers over introducing one-off abstractions. Skills handlers must not import repo-local modules outside `skills/`; pass dependencies through the execution context instead. WebUI JavaScript in `src/Undefined/webui/static/js/` and both native apps use Biome 2.5.10; keep the two package pins, lockfiles, and three configuration schemas in sync. Nested app configurations use `root: false` without inheriting the WebUI rules. App changes must satisfy Biome, TypeScript, and Cargo checks.
 
 ## Tools & Features
 
@@ -44,6 +44,10 @@ Consecutive messages from the same sender within `[message_batcher].window_secon
 ### User identification in prompts
 The system prompt now includes a rule: **recognize and address users by their QQ ID (`sender_id`)** because nicknames can change. When needing to address a user, use the latest nickname obtained via `group.get_member_info(brief=true)`. `end.observations` must be substantive facts worth future retrieval (prefer empty over noise); user-centered observations should always include the QQ ID, e.g., “QQ号12345678（昵称张三）做了某事”.
 
+### Reply relevance and member activity semantics
+Both main prompt variants and `res/IMPORTANT/each.md` guide replies to add useful information without repeating shared background. Keep exceptions for requested explanations, recaps, complete steps, corrections, and natural social replies; never infer a user's knowledge solely from their identity or terminology.
+`group_analysis.member_activity` distinguishes recency (`member_list`), retrieved window message counts (`history`), and weighted indicators (`hybrid`, default). History-mode timestamps must come from messages inside the selected window. History aggregation uses `try_parse_message_time` and skips invalid timestamps before counting or ranking; `parse_message_time` retains its current-time fallback for existing display callers. Missing/zero `last_sent_time` means unknown, not proof of inactivity or never speaking; last-message time does not indicate current online status. See [the toolset documentation](src/Undefined/skills/toolsets/group_analysis/README.md) for reporting limits.
+
 ## Testing Guidelines
 Write tests as `tests/test_<feature>.py`. Async tests use `pytest-asyncio`. Add or update coverage for behavior changes in APIs, config loading/hot reload, cognitive memory, meme or knowledge flows, and WebUI/runtime routes. If you touch `apps/undefined-console/` or `src/Undefined/webui/static/js/`, run `npm run check` in `apps/undefined-console/` in addition to the Python checks; if you touch `apps/undefined-chat/`, run `npm run check` in `apps/undefined-chat/` (it bundles Vitest unit/e2e suites, so cover changed behavior there). No fixed coverage threshold is configured, so cover touched paths well.
 

README.md

@@ -1,6 +1,6 @@
 <table border="0">
   <tr>
-    <td width="100%" valign="top">
+    <td width="70%" valign="top">
       <div align="center">
         <h1>Undefined</h1>
         <em>QQ and WeChat bot platform with cognitive memory architecture and multi-agent Skills.</em>
@@ -18,17 +18,18 @@
         <strong>Undefined</strong> 是一个基于 Python 异步架构的高性能机器人平台，以 OneBot V11 接入 QQ，并可通过微信 ClawBot/iLink 接入微信私聊。项目搭载<strong>认知记忆架构</strong>，采用自研 <strong>Skills</strong> 系统，内置多个智能 Agent，支持代码分析、网络搜索、娱乐互动等多模态能力，并提供 <strong>WebUI</strong> 在线管理，以及可连接同一管理服务的 <strong>跨平台 App</strong>。
       </p>
     </td>
+    <td width="30%" valign="top">
+      <a href="https://raw.githubusercontent.com/69gg/Undefined/main/img/undefined-9527.png">
+        <img src="https://raw.githubusercontent.com/69gg/Undefined/main/img/undefined-9527.png" width="100%" alt="Undefined 9527 自主智能体识别证" />
+      </a>
+    </td>
   </tr>
 </table>
 
 ### _与 [NagaAgent](https://github.com/Xxiii8322766509/NagaAgent) 进行联动！_
 
 ---
 
-## ⚡ 立即体验
-
-[点击添加官方实例QQ](https://qm.qq.com/q/cvjJoNysGA)
-
 ## Release 下载速查
 
 如果只是部署和运行 QQ Bot，通常**不需要**在 GitHub Release 的 Assets 里下载任何文件。推荐按下方[快速开始](#-快速开始-源码模式)使用源码部署；只想快速体验命令行入口时，可使用 `pip install -U Undefined-bot` 或 `uv tool install Undefined-bot`。

apps/undefined-chat/README.md

@@ -40,13 +40,15 @@ iOS：
 ## 快速开始
 
 ```bash
-npm install
+npm ci
 npm run check
 npm run tauri:dev
 ```
 
 `npm run check` 当前包含 Biome、TypeScript、unit/jsdom integration tests、cargo fmt、cargo check 和 cargo test。
 
+Biome 固定为 **2.5.10**，与 Console 和根目录 WebUI 配置保持一致；使用 `npm ci` 安装锁定版本。App 的 `biome.json` 使用独立嵌套配置（`root: false`），不继承 WebUI 格式规则，并显式启用 React 的 `noArrayIndexKey` 检查，避免依赖自动检测造成漏检；升级约定见 [构建文档](../../docs/build.md#6-git-hook-集成)。
+
 Runtime 默认连接 `http://127.0.0.1:8788`，受保护请求由 Tauri Rust command 注入 `X-Undefined-API-Key`。React 侧不直接持有 API Key。
 
 ## Android smoke checklist

apps/undefined-chat/biome.json

@@ -1,14 +1,15 @@
 {
-    "$schema": "https://biomejs.dev/schemas/1.9.4/schema.json",
+    "root": false,
+    "$schema": "https://biomejs.dev/schemas/2.5.10/schema.json",
     "files": {
-        "include": [
-            "src/**/*.ts",
-            "src/**/*.tsx",
-            "package.json",
-            "tsconfig.json",
-            "vite.config.ts",
-            "src-tauri/tauri.conf.json",
-            "src-tauri/capabilities/**/*.json"
+        "includes": [
+            "**/src/**/*.ts",
+            "**/src/**/*.tsx",
+            "**/package.json",
+            "**/tsconfig.json",
+            "**/vite.config.ts",
+            "**/src-tauri/tauri.conf.json",
+            "**/src-tauri/capabilities/**/*.json"
         ]
     },
     "linter": {
@@ -18,6 +19,9 @@
             },
             "correctness": {
                 "noUnusedVariables": "warn"
+            },
+            "suspicious": {
+                "noArrayIndexKey": "error"
             }
         }
     }

apps/undefined-chat/package.json

@@ -43,7 +43,7 @@
 		"remark-gfm": "^4.0.1"
 	},
 	"devDependencies": {
-		"@biomejs/biome": "^1.9.4",
+		"@biomejs/biome": "2.5.10",
 		"@tauri-apps/cli": "^2.3.1",
 		"@testing-library/jest-dom": "^6.9.1",
 		"@testing-library/react": "^16.2.0",

apps/undefined-chat/src/App.test.tsx

@@ -10,7 +10,7 @@ import userEvent from "@testing-library/user-event";
 import type { ReactElement } from "react";
 import { beforeEach, describe, expect, test, vi } from "vitest";
 import { App } from "./App";
-import { LOCALE_STORAGE_KEY, LanguageProvider } from "./i18n";
+import { LanguageProvider, LOCALE_STORAGE_KEY } from "./i18n";
 import { createTauriRuntimeClient } from "./runtime-client/tauri";
 import { conversation, historyItem, runtimeClientStub } from "./test-fixtures";
 

apps/undefined-chat/src/App.tsx

@@ -470,6 +470,7 @@ export function App() {
 						if (e.key === "Escape") closeMobileSidebar();
 					}}
 					role="presentation"
+					aria-hidden="true"
 				/>
 
 				{/* 侧边栏 */}

apps/undefined-chat/src/chat-store/store.ts

@@ -1476,7 +1476,7 @@ export function createChatStore({
 
 	async function loadMoreHistory(conversationId: string): Promise<void> {
 		const historyState = state.historyByConversation[conversationId];
-		if (!historyState || !historyState.hasMore || historyState.loading) {
+		if (!historyState?.hasMore || historyState.loading) {
 			return;
 		}
 

apps/undefined-chat/src/components/ConfirmDialog.tsx

@@ -58,6 +58,7 @@ export function ConfirmDialog({
 		>
 			<div
 				className="confirm-dialog"
+				role="document"
 				onClick={(event) => event.stopPropagation()}
 				onKeyDown={(event) => event.stopPropagation()}
 			>

apps/undefined-chat/src/conversation-list/ConversationList.tsx

@@ -37,6 +37,7 @@ export function ConversationList({
 	const navLabel = t("conversation.nav");
 
 	return (
+		// biome-ignore lint/a11y/useAriaPropsSupportedByRole: aria-modal 仅在同一条件将 role 切换为 dialog 时启用。
 		<nav
 			id={id}
 			aria-label={navLabel}

apps/undefined-chat/src/i18n/index.ts

@@ -1,7 +1,7 @@
 import {
-	type ReactNode,
 	createContext,
 	createElement,
+	type ReactNode,
 	useCallback,
 	useContext,
 	useMemo,

apps/undefined-chat/src/i18n/zh-CN.ts

@@ -3,7 +3,7 @@
  * 包含聊天阶段状态的中英文字映射
  */
 
-import { type Locale, defaultLocale } from "./index";
+import { defaultLocale, type Locale } from "./index";
 
 export type ChatStage =
 	| "received"

apps/undefined-chat/src/image-viewer/ImageViewerModal.tsx

@@ -79,6 +79,7 @@ export function ImageViewerModal({
 		>
 			<div
 				className="runtime-image-viewer-stage"
+				role="document"
 				onClick={(e) => e.stopPropagation()}
 				onKeyDown={(e) => e.stopPropagation()}
 			>
@@ -97,6 +98,7 @@ export function ImageViewerModal({
 			</div>
 			<div
 				className="runtime-image-viewer-toolbar"
+				role="group"
 				onClick={(e) => e.stopPropagation()}
 				onKeyDown={(e) => e.stopPropagation()}
 			>

apps/undefined-chat/src/image-viewer/index.ts

@@ -1,4 +1,4 @@
-export { ImageViewerModal } from "./ImageViewerModal";
 export type { ImageViewerModalProps } from "./ImageViewerModal";
-export { useImageViewer } from "./useImageViewer";
+export { ImageViewerModal } from "./ImageViewerModal";
 export type { UseImageViewerReturn } from "./useImageViewer";
+export { useImageViewer } from "./useImageViewer";

apps/undefined-chat/src/message-composer/CommandPalette.test.tsx

@@ -2,7 +2,7 @@ import { render, screen } from "@testing-library/react";
 import userEvent from "@testing-library/user-event";
 import type { ComponentProps } from "react";
 import { beforeEach, describe, expect, test, vi } from "vitest";
-import { LOCALE_STORAGE_KEY, LanguageProvider } from "../i18n";
+import { LanguageProvider, LOCALE_STORAGE_KEY } from "../i18n";
 import { commandInfo, subcommandInfo } from "../test-fixtures";
 import { CommandPalette } from "./CommandPalette";
 import { buildCommandContext, computeMatches } from "./command-context";

apps/undefined-chat/src/message-composer/MessageComposer.test.tsx

@@ -8,7 +8,7 @@ import {
 import userEvent from "@testing-library/user-event";
 import type { ReactNode } from "react";
 import { beforeEach, describe, expect, test, vi } from "vitest";
-import { LOCALE_STORAGE_KEY, LanguageProvider } from "../i18n";
+import { LanguageProvider, LOCALE_STORAGE_KEY } from "../i18n";
 import { commandInfo, subcommandInfo } from "../test-fixtures";
 import { MessageComposer } from "./MessageComposer";
 

apps/undefined-chat/src/message-composer/MessageComposer.tsx

@@ -3,14 +3,14 @@ import type { AttachmentDraft } from "../chat-store/store";
 import { useTranslation } from "../i18n";
 import type { CommandInfo, MessageReference } from "../runtime-client/types";
 import { CommandPalette } from "./CommandPalette";
-import { ReferenceChips } from "./ReferenceChips";
 import {
-	type CommandMatch,
 	buildCommandContext,
 	buildReplacement,
+	type CommandMatch,
 	computeMatches,
 	findCommandByNameOrAlias,
 } from "./command-context";
+import { ReferenceChips } from "./ReferenceChips";
 
 export type MessageComposerProps = {
 	attachmentQueue: AttachmentDraft[];
@@ -95,7 +95,7 @@ export function MessageComposer({
 	}, [focusRequest]);
 
 	// 输入框高度自适应
-	// biome-ignore lint/correctness/useExhaustiveDependencies: update height on value change
+	// 随输入内容更新高度。
 	useEffect(() => {
 		const textarea = textareaRef.current;
 		if (textarea) {
@@ -125,7 +125,7 @@ export function MessageComposer({
 
 	// 子命令模式下命令存在但无子命令 → 展示帮助卡片
 	const helpCommand = useMemo<CommandInfo | null>(() => {
-		if (!commandContext || commandContext.mode !== "subcommand") return null;
+		if (commandContext?.mode !== "subcommand") return null;
 		if (commandMatches.length > 0) return null;
 		const command = findCommandByNameOrAlias(
 			commandSuggestions,