diff --git a/admin/src/app/admin/projects/[id]/page.tsx b/admin/src/app/admin/projects/[id]/page.tsx
index c4f8bfc..ee588f4 100644
--- a/admin/src/app/admin/projects/[id]/page.tsx
+++ b/admin/src/app/admin/projects/[id]/page.tsx
@@ -61,6 +61,7 @@ export default function ProjectDetailPage() {
   // Member management
   const [showAddMember, setShowAddMember] = useState(false);
   const [addUserId, setAddUserId] = useState("");
+  const [addUserDisplay, setAddUserDisplay] = useState(""); // shown in the input field
   const [addScope, setAddScope] = useState("member");
   const [addMemberLoading, setAddMemberLoading] = useState(false);
   const [addMemberError, setAddMemberError] = useState("");
@@ -111,15 +112,24 @@ export default function ProjectDetailPage() {
   }
 
   async function handleUserSearch(q: string) {
-    setAddUserId(q);
+    setAddUserId(q); // raw typed text for form submission
     if (q.length < 2) { setSearchUsers([]); return; }
     setSearchLoading(true);
     try {
       const res = await fetch(`/api/platform/users?search=${encodeURIComponent(q)}&pageSize=10`);
       const data = await res.json();
+      if (!res.ok) {
+        setSearchUsers([]);
+        setAddMemberError(data.error || "搜索失败，请重试");
+        return;
+      }
       const existingIds = new Set(members.map(m => m.uid));
       setSearchUsers((data.users || []).filter((u: { uid: string }) => !existingIds.has(u.uid)));
-    } catch { setSearchUsers([]); }
+      setAddMemberError("");
+    } catch {
+      setSearchUsers([]);
+      setAddMemberError("搜索失败，请检查网络连接");
+    }
     finally { setSearchLoading(false); }
   }
 
@@ -137,6 +147,7 @@ export default function ProjectDetailPage() {
       if (!res.ok) { setAddMemberError(data.error || "添加失败"); return; }
       setShowAddMember(false);
       setAddUserId("");
+      setAddUserDisplay("");
       setAddScope("member");
       setSearchUsers([]);
       reload();
@@ -347,8 +358,8 @@ export default function ProjectDetailPage() {
               <label className="form-label">搜索用户</label>
               <input
                 className="form-input"
-                value={addUserId}
-                onChange={e => handleUserSearch(e.target.value)}
+                value={addUserDisplay || addUserId}
+                onChange={e => { setAddUserDisplay(e.target.value); handleUserSearch(e.target.value); }}
                 placeholder="输入用户名搜索..."
                 autoFocus
               />
@@ -358,7 +369,7 @@ export default function ProjectDetailPage() {
                     <div
                       key={u.uid}
                       style={{ padding: "8px 12px", cursor: "pointer", borderBottom: "1px solid #f0f0f0" }}
-                      onClick={() => { setAddUserId(u.uid); setSearchUsers([]); }}
+                      onClick={() => { setAddUserId(u.uid); setAddUserDisplay(u.username); setSearchUsers([]); }}
                     >
                       <div style={{ fontWeight: 500, fontSize: "14px" }}>{u.username}</div>
                       <div style={{ fontSize: "12px", color: "#737373" }}>{u.display_name || ""}</div>
@@ -376,7 +387,7 @@ export default function ProjectDetailPage() {
               </select>
             </div>
             <div className="modal-footer">
-              <button className="btn btn-secondary" onClick={() => { setShowAddMember(false); setSearchUsers([]); }}>取消</button>
+              <button className="btn btn-secondary" onClick={() => { setShowAddMember(false); setSearchUsers([]); setAddUserDisplay(""); }}>取消</button>
               <button className="btn btn-primary" disabled={addMemberLoading || !addUserId} onClick={handleAddMember}>
                 {addMemberLoading ? "添加中..." : "添加"}
               </button>
diff --git a/admin/src/app/admin/workspaces/[id]/page.tsx b/admin/src/app/admin/workspaces/[id]/page.tsx
index ded5e80..a805b62 100644
--- a/admin/src/app/admin/workspaces/[id]/page.tsx
+++ b/admin/src/app/admin/workspaces/[id]/page.tsx
@@ -73,6 +73,7 @@ export default function WorkspaceDetailPage() {
   // Member management
   const [showAddMember, setShowAddMember] = useState(false);
   const [addUserId, setAddUserId] = useState("");
+  const [addUserDisplay, setAddUserDisplay] = useState(""); // shown in the input field
   const [addRole, setAddRole] = useState("member");
   const [addMemberLoading, setAddMemberLoading] = useState(false);
   const [addMemberError, setAddMemberError] = useState("");
@@ -163,15 +164,25 @@ export default function WorkspaceDetailPage() {
 
   // Search users for adding member
   async function handleUserSearch(q: string) {
-    setAddUserId(q);
+    setAddUserId(q); // keep the raw typed text for form submission
     if (q.length < 2) { setSearchUsers([]); return; }
     setSearchLoading(true);
     try {
       const res = await fetch(`/api/platform/users?search=${encodeURIComponent(q)}&pageSize=10`);
       const data = await res.json();
-      const existingIds = new Set(members.map(m => m.uid));
+      if (!res.ok) {
+        // Show error from API
+        setSearchUsers([]);
+        setAddMemberError(data.error || "搜索失败，请重试");
+        return;
+      }
+      const existingIds = new Set(members.map(m => m.userId));
       setSearchUsers((data.users || []).filter((u: { uid: string }) => !existingIds.has(u.uid)));
-    } catch { setSearchUsers([]); }
+      setAddMemberError(""); // clear previous errors
+    } catch {
+      setSearchUsers([]);
+      setAddMemberError("搜索失败，请检查网络连接");
+    }
     finally { setSearchLoading(false); }
   }
 
@@ -189,6 +200,7 @@ export default function WorkspaceDetailPage() {
       if (!res.ok) { setAddMemberError(data.error || "添加失败"); return; }
       setShowAddMember(false);
       setAddUserId("");
+      setAddUserDisplay("");
       setAddRole("member");
       setSearchUsers([]);
       reload();
@@ -496,8 +508,8 @@ export default function WorkspaceDetailPage() {
               <label className="form-label">搜索用户</label>
               <input
                 className="form-input"
-                value={addUserId}
-                onChange={(e) => handleUserSearch(e.target.value)}
+                value={addUserDisplay || addUserId}
+                onChange={(e) => { setAddUserDisplay(e.target.value); handleUserSearch(e.target.value); }}
                 placeholder="输入用户名搜索..."
                 autoFocus
               />
@@ -509,6 +521,7 @@ export default function WorkspaceDetailPage() {
                       style={{ padding: "8px 12px", cursor: "pointer", borderBottom: "1px solid #f0f0f0" }}
                       onClick={() => {
                         setAddUserId(u.uid);
+                        setAddUserDisplay(u.username);
                         setSearchUsers([]);
                       }}
                     >
@@ -528,7 +541,7 @@ export default function WorkspaceDetailPage() {
               </select>
             </div>
             <div className="modal-footer">
-              <button className="btn btn-secondary" onClick={() => { setShowAddMember(false); setSearchUsers([]); }}>取消</button>
+              <button className="btn btn-secondary" onClick={() => { setShowAddMember(false); setSearchUsers([]); setAddUserDisplay(""); }}>取消</button>
               <button className="btn btn-primary" disabled={addMemberLoading || !addUserId} onClick={handleAddMember}>
                 {addMemberLoading ? "添加中..." : "添加"}
               </button>
diff --git a/admin/src/app/platform/sessions/page.tsx b/admin/src/app/platform/sessions/page.tsx
index 9da3b2f..2041965 100644
--- a/admin/src/app/platform/sessions/page.tsx
+++ b/admin/src/app/platform/sessions/page.tsx
@@ -2,8 +2,14 @@
 
 import { useEffect, useState } from "react";
 import { format } from "date-fns";
+import {
+  listUserSessions,
+  kickUser,
+  getUserStatus,
+  type UserSession,
+} from "@/lib/admin-rpc";
 
-interface SessionInfo {
+interface PlatformSessionInfo {
   sessionId: string;
   userId: string;
   username: string | null;
@@ -14,14 +20,17 @@ interface SessionInfo {
 }
 
 export default function PlatformSessionsPage() {
-  const [sessions, setSessions] = useState<SessionInfo[]>([]);
+  const [sessions, setSessions] = useState<PlatformSessionInfo[]>([]);
   const [loading, setLoading] = useState(true);
   const [kicking, setKicking] = useState<string | null>(null);
+  const [adminRpcAvailable, setAdminRpcAvailable] = useState(false);
 
   useEffect(() => { loadSessions(); }, []);
+
   async function loadSessions() {
     setLoading(true);
     try {
+      // Load platform sessions from the app's REST API (Redis-based)
       const res = await fetch("/api/platform/sessions");
       if (!res.ok) {
         setSessions([]);
@@ -37,6 +46,31 @@ export default function PlatformSessionsPage() {
     }
   }
 
+  async function handleKickAllSessions(userId: string) {
+    if (!confirm(`强制下线用户 ${userId} 的所有会话？`)) return;
+    setKicking(userId);
+    try {
+      if (adminRpcAvailable) {
+        await kickUser(userId);
+      } else {
+        // Fallback: kick sessions via Redis (app REST API)
+        const userSessions = sessions.filter((s) => s.userId === userId);
+        await Promise.all(
+          userSessions.map((s) =>
+            fetch("/api/platform/sessions", {
+              method: "DELETE",
+              headers: { "Content-Type": "application/json" },
+              body: JSON.stringify({ sessionId: s.sessionId }),
+            })
+          )
+        );
+      }
+      loadSessions();
+    } finally {
+      setKicking(null);
+    }
+  }
+
   async function handleKickSession(sessionId: string) {
     if (!confirm("确定强制下线该会话吗？")) return;
     setKicking(sessionId);
@@ -47,11 +81,13 @@ export default function PlatformSessionsPage() {
         body: JSON.stringify({ sessionId }),
       });
       loadSessions();
-    } finally { setKicking(null); }
+    } finally {
+      setKicking(null);
+    }
   }
 
   // Group by user
-  const byUser = sessions.reduce<Record<string, SessionInfo[]>>((acc, s) => {
+  const byUser = sessions.reduce<Record<string, PlatformSessionInfo[]>>((acc, s) => {
     const key = s.userId || "unknown";
     if (!acc[key]) acc[key] = [];
     acc[key].push(s);
@@ -65,9 +101,30 @@ export default function PlatformSessionsPage() {
           <h1 className="page-title">平台用户在线会话</h1>
           <p className="page-subtitle">
             共 {sessions.length} 个活跃会话，涉及 {Object.keys(byUser).length} 个用户
+            {adminRpcAvailable && (
+              <span style={{ marginLeft: "8px", color: "#22c55e", fontSize: "12px" }}>
+                ● adminrpc 已连接
+              </span>
+            )}
           </p>
         </div>
-        <button className="btn btn-secondary" onClick={loadSessions}>刷新</button>
+        <div style={{ display: "flex", gap: "8px" }}>
+          <button
+            className="btn btn-secondary"
+            onClick={async () => {
+              try {
+                const { adminRpcHealth } = await import("@/lib/admin-rpc");
+                await adminRpcHealth();
+                setAdminRpcAvailable(true);
+              } catch {
+                setAdminRpcAvailable(false);
+              }
+            }}
+          >
+            检测 adminrpc
+          </button>
+          <button className="btn btn-secondary" onClick={loadSessions}>刷新</button>
+        </div>
       </div>
 
       {loading ? (
@@ -91,23 +148,19 @@ export default function PlatformSessionsPage() {
                 <span className="badge badge-neutral" style={{ marginLeft: "8px" }}>
                   {userSessions.length} 个会话
                 </span>
+                {adminRpcAvailable && (
+                  <AdminRpcUserStatus userId={userId} />
+                )}
               </div>
-              <button
-                className="btn btn-danger btn-sm"
-                onClick={async () => {
-                  if (!confirm(`强制下线用户 ${userId} 的所有会话？`)) return;
-                  for (const s of userSessions) {
-                    await fetch("/api/platform/sessions", {
-                      method: "DELETE",
-                      headers: { "Content-Type": "application/json" },
-                      body: JSON.stringify({ sessionId: s.sessionId }),
-                    });
-                  }
-                  loadSessions();
-                }}
-              >
-                全部下线
-              </button>
+              {adminRpcAvailable && (
+                <button
+                  className="btn btn-danger btn-sm"
+                  disabled={kicking === userId}
+                  onClick={() => handleKickAllSessions(userId)}
+                >
+                  {kicking === userId ? "处理中..." : "全部下线 (adminrpc)"}
+                </button>
+              )}
             </div>
 
             <div className="table-container">
@@ -115,6 +168,7 @@ export default function PlatformSessionsPage() {
                 <thead>
                   <tr>
                     <th>Session ID</th>
+                    <th>工作空间</th>
                     <th>登录时间</th>
                     <th>IP</th>
                     <th>User Agent</th>
@@ -129,10 +183,15 @@ export default function PlatformSessionsPage() {
                           {s.sessionId.slice(0, 16)}...
                         </code>
                       </td>
+                      <td style={{ fontSize: "12px" }}>
+                        {s.workspaceId ? (
+                          <code>{s.workspaceId.slice(0, 8)}...</code>
+                        ) : "—"}
+                      </td>
                       <td>{s.createdAt ? format(new Date(s.createdAt), "yyyy-MM-dd HH:mm") : "—"}</td>
                       <td style={{ fontSize: "13px" }}>{s.ipAddress || "—"}</td>
                       <td
-                        style={{ fontSize: "12px", maxWidth: "280px", overflow: "hidden", textOverflow: "ellipsis", whiteSpace: "nowrap" }}
+                        style={{ fontSize: "12px", maxWidth: "240px", overflow: "hidden", textOverflow: "ellipsis", whiteSpace: "nowrap" }}
                         title={s.userAgent || ""}
                       >
                         {s.userAgent || "—"}
@@ -143,7 +202,7 @@ export default function PlatformSessionsPage() {
                           disabled={kicking === s.sessionId}
                           onClick={() => handleKickSession(s.sessionId)}
                         >
-                          {kicking === s.sessionId ? "处理中..." : "下线"}
+                          {kicking === s.sessionId ? "..." : "下线"}
                         </button>
                       </td>
                     </tr>
@@ -157,3 +216,23 @@ export default function PlatformSessionsPage() {
     </div>
   );
 }
+
+// ─── AdminRpc Status Badge ────────────────────────────────────────────────────
+
+function AdminRpcUserStatus({ userId }: { userId: string }) {
+  const [status, setStatus] = useState<string | null>(null);
+
+  useEffect(() => {
+    getUserStatus(userId)
+      .then((r) => setStatus(r.status))
+      .catch(() => setStatus(null));
+  }, [userId]);
+
+  if (!status) return null;
+  const color = status === "Online" ? "#22c55e" : "#f59e0b";
+  return (
+    <span style={{ marginLeft: "8px", color, fontSize: "12px", fontWeight: 500 }}>
+      [{status}]
+    </span>
+  );
+}
diff --git a/admin/src/lib/env.ts b/admin/src/lib/env.ts
index 18f7577..01c1bb8 100644
--- a/admin/src/lib/env.ts
+++ b/admin/src/lib/env.ts
@@ -48,3 +48,8 @@ export const RUST_BACKEND_URL =
   process.env.RUST_BACKEND_URL || "http://localhost:3000";
 export const ADMIN_API_SHARED_KEY =
   process.env.ADMIN_API_SHARED_KEY || "";
+
+// adminrpc HTTP 服务地址（k8s 内部默认地址）
+// 在 Kubernetes 环境中默认使用 Service DNS，在本地开发时覆盖为 localhost:9091
+export const ADMIN_RPC_URL =
+  process.env.ADMIN_RPC_URL || "http://adminrpc.admin.svc.cluster.local:9091";
diff --git a/src/app/page.tsx b/src/app/page.tsx
index c0e3b79..8ecb89f 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -1,7 +1,7 @@
 import {useEffect} from 'react';
 import {useNavigate} from 'react-router-dom';
 import {LandingNav} from '@/components/landing/landing-nav';
-import {LandingHero, LandingFeatures, LandingHighlight} from '@/components/landing/landing-sections';
+import {LandingFeatures, LandingHero, LandingHighlight} from '@/components/landing/landing-sections';
 import {LandingFooter} from '@/components/landing/landing-footer';
 import {useUser} from '@/contexts/user-context';
 
@@ -9,25 +9,19 @@ export default function GitDataLandingPage() {
     const navigate = useNavigate();
     const {isAuthenticated} = useUser();
     const handleRegister = () => navigate('/auth/register');
-
-    // Redirect authenticated users to workspace
     useEffect(() => {
         if (isAuthenticated) {
             navigate('/w/me', {replace: true});
         }
     }, [isAuthenticated, navigate]);
 
-    // Don't render landing page for authenticated users
     if (isAuthenticated) {
         return null;
     }
-
     return (
         <div className="min-h-screen bg-white dark:bg-zinc-950 text-zinc-900 dark:text-zinc-100 font-sans antialiased">
-            {/* Subtle background grid */}
             <div
                 className="fixed inset-0 bg-[linear-gradient(to_right,#09090b08_1px,transparent_1px),linear-gradient(to_bottom,#09090b08_1px,transparent_1px)] bg-[size:24px_24px] pointer-events-none"/>
-
             <LandingNav/>
             <main>
                 <LandingHero onRegister={handleRegister}/>
diff --git a/src/client/types.gen.ts b/src/client/types.gen.ts
index 5e9a71d..b9be364 100644
--- a/src/client/types.gen.ts
+++ b/src/client/types.gen.ts
@@ -4360,6 +4360,7 @@ export type RoomAiResponse = {
     think: boolean;
     stream: boolean;
     min_score?: number | null;
+    agent_type?: string | null;
     created_at: string;
     updated_at: string;
 };
@@ -4375,6 +4376,7 @@ export type RoomAiUpsertRequest = {
     think?: boolean | null;
     stream?: boolean | null;
     min_score?: number | null;
+    agent_type?: string | null;
 };
 
 export type RoomCategoryCreateRequest = {
diff --git a/src/components/room/RoomSettingsPanel.tsx b/src/components/room/RoomSettingsPanel.tsx
index 5112075..358cf06 100644
--- a/src/components/room/RoomSettingsPanel.tsx
+++ b/src/components/room/RoomSettingsPanel.tsx
@@ -55,6 +55,7 @@ export const RoomSettingsPanel = memo(function RoomSettingsPanel({
   const [useExact, setUseExact] = useState(false);
   const [think, setThink] = useState(false);
   const [stream, setStream] = useState(true);
+  const [agentType, setAgentType] = useState('chat');
   const [isAddingAi, setIsAddingAi] = useState(false);
 
   const handleSave = async () => {
@@ -110,6 +111,7 @@ export const RoomSettingsPanel = memo(function RoomSettingsPanel({
     setUseExact(false);
     setThink(false);
     setStream(true);
+    setAgentType('chat');
     setShowAdvanced(false);
     setShowAiAddDialog(true);
     loadModels();
@@ -131,6 +133,7 @@ export const RoomSettingsPanel = memo(function RoomSettingsPanel({
         use_exact: useExact,
         think,
         stream,
+        agent_type: agentType || undefined,
       };
       await aiUpsert({
         path: { room_id: room.id },
@@ -275,6 +278,14 @@ export const RoomSettingsPanel = memo(function RoomSettingsPanel({
                         think
                       </span>
                     )}
+                    {config.agent_type === 'react' && (
+                      <span
+                        className="rounded px-1 py-0.5 text-[10px] shrink-0"
+                        style={{ background: 'rgba(168,85,247,0.15)', color: '#c084fc' }}
+                      >
+                        react
+                      </span>
+                    )}
                   </div>
                   <Button
                     variant="ghost"
@@ -363,6 +374,32 @@ export const RoomSettingsPanel = memo(function RoomSettingsPanel({
               />
             </div>
 
+            {/* Agent type */}
+            <div className="space-y-2">
+              <Label className="text-sm" style={{ color: 'var(--room-text)' }}>Agent Type</Label>
+              <Select value={agentType} onValueChange={(v) => { if (v !== null) setAgentType(v); }}>
+                <SelectTrigger className="w-full" style={{ background: 'var(--room-bg)', borderColor: 'var(--room-border)', color: 'var(--room-text)' }}>
+                  <SelectValue>
+                    {agentType === 'react' ? 'ReAct (multi-step reasoning)' : 'Chat (simple)'}
+                  </SelectValue>
+                </SelectTrigger>
+                <SelectContent style={{ background: 'var(--room-bg)', border: '1px solid var(--room-border)' }}>
+                  <SelectItem value="chat">
+                    <div className="flex flex-col items-start gap-0.5">
+                      <span className="font-medium">Chat</span>
+                      <span className="text-xs" style={{ color: 'var(--room-text-muted)' }}>Simple single-turn response</span>
+                    </div>
+                  </SelectItem>
+                  <SelectItem value="react">
+                    <div className="flex flex-col items-start gap-0.5">
+                      <span className="font-medium">ReAct</span>
+                      <span className="text-xs" style={{ color: 'var(--room-text-muted)' }}>Multi-step reasoning with tool use</span>
+                    </div>
+                  </SelectItem>
+                </SelectContent>
+              </Select>
+            </div>
+
             {/* Advanced settings toggle */}
             <button
               type="button"