feat: 知识库实体筛选、技能白名单收紧、嵌入主题与提问组件优化

- 知识库笔记列表支持按实体精确筛选（路由/服务/仓储层透传，关系图索引查询）
- 自定义智能体技能白名单在 skill_view 与 skill_manage 的 list/view 别名上同样生效；
  config 未声明 skills 时视为无可见技能
- 嵌入圆桌主题解析默认深蓝，强制主题期间不再写 localStorage 覆盖主站选择
- 智能体提问建议拆出 agent-question-chips 组件，编辑器与详情面板联动优化
- 新增 qa-client 问答测试脚本

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

frontend-web/src/pages/AgentChatPage.tsx

@@ -8,6 +8,7 @@ import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import type { PromptInputMessage } from "@/components/ai-elements/prompt-input";
 import { Button } from "@/components/ui/button";
 import { AgentDetailPanel } from "@/components/workspace/agents/agent-detail-panel";
+import { AgentQuestionChips } from "@/components/workspace/agents/agent-question-chips";
 import { AgentWelcome } from "@/components/workspace/agent-welcome";
 import { ArtifactTrigger } from "@/components/workspace/artifacts";
 import { ChatBox, useThreadChat } from "@/components/workspace/chats";
@@ -28,7 +29,6 @@ import { useThreadStream } from "@/core/threads/hooks";
 import { textOfMessage } from "@/core/threads/utils";
 import { env } from "@/env";
 import { desensitize } from "@/lib/desensitize";
-import { cn } from "@/lib/utils";
 
 export default function AgentChatPage() {
   const routeBase = useRouteBase();
@@ -235,29 +235,12 @@ export default function AgentChatPage() {
                     className="mb-7"
                   />
                   <div className="w-full max-w-(--container-width-md)">
-                    {commonQuestions.length > 0 && (
-                      <div className="mb-2 flex max-h-20 flex-wrap items-start justify-start gap-2 overflow-y-auto px-1">
-                        {commonQuestions.map((question, index) => (
-                          <button
-                            key={index}
-                            type="button"
-                            disabled={isDemoMode}
-                            onClick={() =>
-                              handleSubmit({ text: question.prompt, files: [] })
-                            }
-                            title={desensitize(question.prompt)}
-                            className={cn(
-                              "border-border/70 bg-background/85 hover:bg-accent hover:border-border max-w-full rounded-full border px-3 py-1.5 text-left text-sm leading-5 shadow-sm transition-colors",
-                              "disabled:cursor-not-allowed disabled:opacity-50",
-                            )}
-                          >
-                            <span className="block max-w-[220px] truncate">
-                              {desensitize(question.title)}
-                            </span>
-                          </button>
-                        ))}
-                      </div>
-                    )}
+                    <AgentQuestionChips
+                      className="mb-3"
+                      questions={commonQuestions}
+                      disabled={isDemoMode}
+                      onAsk={(text) => handleSubmit({ text, files: [] })}
+                    />
                     <div className="min-w-0 flex-1">
                       <InputBox
                         className="w-full"

frontend-web/src/pages/EmbedChatPage.tsx

@@ -4,13 +4,9 @@ import { useSearchParams } from "next/navigation";
 import { useCallback, useEffect, useRef, useState } from "react";
 import { useParams } from "react-router-dom";
 
-import { useTheme } from "@/contexts/ThemeContext";
 import { loginByUsername } from "@/core/auth/api";
 import { setStoredAuth } from "@/core/auth";
-import {
-  resolveEmbedChatParams,
-  resolveEmbedTheme,
-} from "@/core/embed/params";
+import { resolveEmbedChatParams } from "@/core/embed/params";
 import { registerEmbedSession } from "@/core/embed/status-api";
 import { useThreadSettings } from "@/core/settings";
 import { useThreadStream } from "@/core/threads/hooks";
@@ -29,7 +25,8 @@ const EMBED_ROUTE_BASE = "/embed/chats";
 export default function EmbedChatPage() {
   const { thread_id: threadIdFromPath } = useParams<{ thread_id: string }>();
   const searchParams = useSearchParams();
-  const { setTheme } = useTheme();
+  // 主题不在这里处理 —— ?theme= 由 AppProviders 通过 forcedTheme 强制
+  // （不落 localStorage），避免污染主站用户自己选的主题。
   const embedParams = resolveEmbedChatParams(searchParams.toString());
   const [authReady, setAuthReady] = useState(false);
   const [authError, setAuthError] = useState<string | null>(null);
@@ -51,12 +48,6 @@ export default function EmbedChatPage() {
   const [settings] = useThreadSettings(threadId);
   const { tokenUsageEnabled } = useModels();
 
-  useEffect(() => {
-    if (embedParams.theme) {
-      setTheme(resolveEmbedTheme(embedParams.theme));
-    }
-  }, [embedParams.theme, setTheme]);
-
   useEffect(() => {
     let cancelled = false;
     async function runLogin() {

frontend-web/src/pages/EmbedRoundtablePage.tsx

@@ -3,7 +3,6 @@
 import { useEffect, useState } from "react";
 import { useSearchParams } from "next/navigation";
 
-import { useTheme } from "@/contexts/ThemeContext";
 import { loginByUsername } from "@/core/auth/api";
 import { setStoredAuth } from "@/core/auth";
 import { readWujieProps, isWujieEnv } from "@/core/embed/wujie";
@@ -13,17 +12,6 @@ import "@/roundtable-planning/styles/roundtable-planning.css";
 
 const DEFAULT_USERNAME = "guest";
 
-/**
- * 把宿主传入的主题标识映射成 light/dark。**默认深蓝（dark）**：
- * 只有明确传 light/红白 才走浅色，其余（dark / dark-blue / 深蓝 / 空）一律深蓝。
- * 不复用 `resolveEmbedTheme`（它只认严格的 "dark-blue"，传 "dark" 会被判成浅色）。
- */
-function resolveEmbedRoundtableTheme(raw: string): "dark" | "light" {
-  const v = raw.trim().toLowerCase();
-  if (v === "light" || v === "red" || v === "红白") return "light";
-  return "dark";
-}
-
 /**
  * 圆桌规划嵌入页（独立入口，**与现有 wujie ticket 登录无关**）。
  *
@@ -37,9 +25,10 @@ function resolveEmbedRoundtableTheme(raw: string): "dark" | "light" {
  */
 export default function EmbedRoundtablePage() {
   const searchParams = useSearchParams();
-  const { setTheme } = useTheme();
 
-  // username / password / theme：wujie props 优先，URL query 兜底。
+  // username / password：wujie props 优先，URL query 兜底。
+  // 主题不在这里处理 —— 嵌入路由的主题由 AppProviders 通过 forcedTheme
+  // 强制（不落 localStorage），避免污染主站用户自己选的主题。
   const wp = readWujieProps();
   const username =
     (typeof wp.username === "string" && wp.username.trim()) ||
@@ -53,19 +42,10 @@ export default function EmbedRoundtablePage() {
     (typeof wp.password === "string" && wp.password) ||
     searchParams.get("password") ||
     undefined;
-  // 主题色：宿主传入优先；默认「深蓝」= dark 主题（其主色为蓝，oklch hue 259）。
-  const themeParam =
-    (typeof wp.theme === "string" && wp.theme.trim()) ||
-    searchParams.get("theme")?.trim() ||
-    "dark";
 
   const [authReady, setAuthReady] = useState(false);
   const [authError, setAuthError] = useState<string | null>(null);
 
-  useEffect(() => {
-    setTheme(resolveEmbedRoundtableTheme(themeParam));
-  }, [themeParam, setTheme]);
-
   useEffect(() => {
     if (!isWujieEnv()) return;
     document.documentElement.classList.add("wujie-embed");

frontend-web/src/pages/NewAgentPage.tsx

@@ -184,13 +184,11 @@ export default function NewAgentPage() {
     // Name is intentionally NOT required here so the user can start chatting
     // immediately. If they leave it blank, ensureAgent() generates a placeholder
     // and writes it back into the input so they can rename it later.
-    if (enabledSkills.length > 0 && selectedSkills.length === 0) {
-      setFormError("请至少选择一个技能");
-      return null;
-    }
+    // Zero skills is a valid choice: the backend treats an empty/omitted skill
+    // list as "no skills" for custom agents (never "all skills").
     setFormError("");
     return nameInput.trim();
-  }, [enabledSkills.length, nameInput, selectedSkills.length]);
+  }, [nameInput]);
 
   const ensureAgent = useCallback(async () => {
     const provided = validateForm();