contracts/agent-v1.openapi.json

@@ -1011,8 +1011,10 @@
                     "type": "string",
                     "enum": [
                       "request",
+                      "auto",
                       "always"
-                    ]
+                    ],
+                    "description": "request forwards approval prompts; auto approves only the low-risk allowlist; always approves every prompt not explicitly denied by OpenCode."
                   }
                 },
                 "required": [

contracts/manifest.json

@@ -3,11 +3,7 @@
   "contracts": {
     "agent": {
       "file": "agent-v1.openapi.json",
-      "sha256": "d559c6e76c33e7a7451743f60d85da0630d0df14fb5215228acefcf2eaea555a"
-    },
-    "server": {
-      "file": "server-v1.openapi.json",
-      "sha256": "b003a57c9b8c1a041b644363ef58afb8bfcede1fe076ce48a190d2a1ac915e3f"
+      "sha256": "94bd8914597c56b6429160e8c556993ac0617ad079de2980a4b6cb9fdf89c039"
     }
   }
 }

src/app/api/auth/[...nextauth]/options.test.ts

@@ -51,6 +51,58 @@ describe("NextAuth access token refresh", () => {
       restoreEnv("KEYCLOAK_CLIENT_SECRET", previousEnv.clientSecret);
     }
   });
+
+  it.each([
+    ["network failure", () => Promise.reject(new Error("connection refused"))],
+    [
+      "non-JSON response",
+      () =>
+        Promise.resolve({
+          ok: false,
+          json: async () => {
+            throw new SyntaxError("Unexpected token");
+          },
+        }),
+    ],
+    [
+      "invalid token payload",
+      () =>
+        Promise.resolve({
+          ok: true,
+          json: async () => ({ access_token: "   ", expires_in: 0 }),
+        }),
+    ],
+  ])("returns a session error for %s", async (_label, fetchResult) => {
+    const previousEnv = {
+      issuer: process.env.KEYCLOAK_ISSUER,
+      clientId: process.env.KEYCLOAK_CLIENT_ID,
+      clientSecret: process.env.KEYCLOAK_CLIENT_SECRET,
+    };
+    process.env.KEYCLOAK_ISSUER = "https://keycloak.example/realms/tjwater";
+    process.env.KEYCLOAK_CLIENT_ID = "frontend";
+    process.env.KEYCLOAK_CLIENT_SECRET = "secret";
+    const originalFetch = globalThis.fetch;
+    globalThis.fetch = jest.fn(fetchResult) as unknown as typeof fetch;
+
+    try {
+      const jwt = authOptions.callbacks?.jwt as (input: unknown) => Promise<{
+        error?: string;
+      }>;
+      await expect(
+        jwt({
+          token: { refreshToken: "refresh-token" },
+          trigger: "update",
+          session: { forceRefresh: true },
+        }),
+      ).resolves.toMatchObject({ error: "RefreshAccessTokenError" });
+    } finally {
+      if (originalFetch) globalThis.fetch = originalFetch;
+      else delete (globalThis as { fetch?: typeof fetch }).fetch;
+      restoreEnv("KEYCLOAK_ISSUER", previousEnv.issuer);
+      restoreEnv("KEYCLOAK_CLIENT_ID", previousEnv.clientId);
+      restoreEnv("KEYCLOAK_CLIENT_SECRET", previousEnv.clientSecret);
+    }
+  });
 });
 
 const restoreEnv = (key: string, value: string | undefined) => {

src/app/api/auth/[...nextauth]/options.ts

@@ -39,25 +39,43 @@ const refreshAccessToken = async (token: JWT): Promise<JWT> => {
     refresh_token: token.refreshToken,
   });
 
+  try {
     const response = await fetch(keycloakTokenEndpoint, {
       method: "POST",
       headers: { "Content-Type": "application/x-www-form-urlencoded" },
       body,
     });
-  const refreshed = (await response.json()) as KeycloakTokenResponse;
+    const refreshed = (await response.json()) as Partial<KeycloakTokenResponse> | null;
 
-  if (!response.ok || !refreshed.access_token || typeof refreshed.expires_in !== "number") {
+    if (
+      !response.ok ||
+      !refreshed ||
+      typeof refreshed.access_token !== "string" ||
+      !refreshed.access_token.trim() ||
+      typeof refreshed.expires_in !== "number" ||
+      !Number.isFinite(refreshed.expires_in) ||
+      refreshed.expires_in <= 0
+    ) {
       return { ...token, error: "RefreshAccessTokenError" };
     }
 
+    const rotatedRefreshToken =
+      typeof refreshed.refresh_token === "string" &&
+      refreshed.refresh_token.trim()
+        ? refreshed.refresh_token.trim()
+        : token.refreshToken;
+
     return {
       ...token,
-    accessToken: refreshed.access_token,
+      accessToken: refreshed.access_token.trim(),
       accessTokenIssuedAt: Date.now(),
       accessTokenExpires: Date.now() + refreshed.expires_in * 1000,
-    refreshToken: refreshed.refresh_token ?? token.refreshToken,
+      refreshToken: rotatedRefreshToken,
       error: undefined,
     };
+  } catch {
+    return { ...token, error: "RefreshAccessTokenError" };
+  }
 };
 
 const authOptions: NextAuthOptions = {

src/components/chat/AgentComposer.test.tsx

@@ -44,7 +44,7 @@ describe("AgentComposer", () => {
           modelOptions={[{ id: "test-model", label: "测试模型" }]}
           selectedModel="test-model"
           onModelChange={jest.fn()}
-          approvalMode="request"
+          approvalMode="auto"
           onApprovalModeChange={jest.fn()}
         />
       </ThemeProvider>,
@@ -56,6 +56,56 @@ describe("AgentComposer", () => {
     expect(screen.queryByRole("button", { name: "上传附件" })).not.toBeInTheDocument();
     expect(screen.getByTitle("快捷指令图标")).toBeInTheDocument();
     expect(screen.queryByAltText("TJWater Agent")).not.toBeInTheDocument();
+    expect(screen.getByText("自动批准")).toBeInTheDocument();
     expect(voiceButton.nextElementSibling?.contains(sendButton)).toBe(true);
   });
+
+  it("disables input while the Agent runtime is unavailable", () => {
+    render(
+      <ThemeProvider theme={createTheme()}>
+        <AgentComposer
+          isStreaming={false}
+          runtimeState="unavailable"
+          isListening={false}
+          isSttSupported={false}
+          presets={[]}
+          onSend={jest.fn()}
+          onAbort={jest.fn()}
+          onStartListening={jest.fn()}
+          onStopListening={jest.fn()}
+          modelOptions={[]}
+          onModelChange={jest.fn()}
+          approvalMode="auto"
+          onApprovalModeChange={jest.fn()}
+        />
+      </ThemeProvider>,
+    );
+
+    expect(screen.getByPlaceholderText("Agent 服务未就绪，暂时无法发送消息")).toBeDisabled();
+    expect(screen.getByRole("button", { name: "发送" })).toBeDisabled();
+  });
+
+  it("renders the always-allow mode as an explicit warning state", () => {
+    render(
+      <ThemeProvider theme={createTheme()}>
+        <AgentComposer
+          isStreaming={false}
+          isListening={false}
+          isSttSupported={false}
+          presets={[]}
+          onSend={jest.fn()}
+          onAbort={jest.fn()}
+          onStartListening={jest.fn()}
+          onStopListening={jest.fn()}
+          modelOptions={[]}
+          onModelChange={jest.fn()}
+          approvalMode="always"
+          onApprovalModeChange={jest.fn()}
+        />
+      </ThemeProvider>,
+    );
+
+    expect(screen.getByText("始终允许")).toBeInTheDocument();
+    expect(screen.getByTestId("WarningAmberRoundedIcon")).toBeInTheDocument();
+  });
 });

src/components/chat/AgentComposer.tsx

@@ -27,6 +27,8 @@ import BoltRounded from "@mui/icons-material/BoltRounded";
 import AutoAwesomeRounded from "@mui/icons-material/AutoAwesomeRounded";
 import VerifiedUserRounded from "@mui/icons-material/VerifiedUserRounded";
 import AdminPanelSettingsRounded from "@mui/icons-material/AdminPanelSettingsRounded";
+import WarningAmberRounded from "@mui/icons-material/WarningAmberRounded";
+import type { AgentRuntimeState } from "@/lib/agentRuntime";
 import type { AgentModelOption } from "@/lib/chatModels";
 import type { AgentApprovalMode, AgentModel } from "@/lib/chatStream";
 
@@ -40,6 +42,7 @@ export type AgentComposerHandle = {
 
 type AgentComposerProps = {
   isHydrating?: boolean;
+  runtimeState?: AgentRuntimeState;
   isStreaming: boolean;
   isListening: boolean;
   isSttSupported: boolean;
@@ -55,6 +58,35 @@ type AgentComposerProps = {
   onApprovalModeChange: (mode: AgentApprovalMode) => void;
 };
 
+const approvalModeOptions: ReadonlyArray<{
+  value: AgentApprovalMode;
+  label: string;
+  description: string;
+  icon: React.ElementType;
+}> = [
+  {
+    value: "request",
+    label: "请求批准",
+    description: "白名单外的工具权限逐次确认",
+    icon: VerifiedUserRounded,
+  },
+  {
+    value: "auto",
+    label: "自动批准",
+    description: "低风险自动批准，其余仍需确认",
+    icon: AdminPanelSettingsRounded,
+  },
+  {
+    value: "always",
+    label: "始终允许",
+    description: "除明确禁止项外自动放行",
+    icon: WarningAmberRounded,
+  },
+];
+
+const getApprovalModeOption = (value: AgentApprovalMode) =>
+  approvalModeOptions.find((option) => option.value === value) ?? approvalModeOptions[0];
+
 const renderModelIcon = (
   icon: AgentModelOption["icon"] | undefined,
   props?: React.ComponentProps<typeof BoltRounded>,
@@ -67,6 +99,7 @@ const renderModelIcon = (
 
 export const AgentComposer = React.forwardRef<AgentComposerHandle, AgentComposerProps>(function AgentComposer({
   isHydrating = false,
+  runtimeState = "ready",
   isStreaming,
   isListening,
   isSttSupported,
@@ -85,8 +118,19 @@ export const AgentComposer = React.forwardRef<AgentComposerHandle, AgentComposer
   const inputRef = React.useRef<HTMLInputElement | HTMLTextAreaElement | null>(null);
   const [input, setInput] = React.useState("");
   const [isPresetOpen, setIsPresetOpen] = React.useState(false);
-  const canSend = input.trim().length > 0 && !isStreaming && !isHydrating;
+  const isRuntimeReady = runtimeState === "ready";
+  const canSend = input.trim().length > 0 && !isStreaming && !isHydrating && isRuntimeReady;
+  const placeholder = isHydrating
+    ? "正在加载对话记录..."
+    : runtimeState === "checking"
+      ? "正在连接 Agent 服务..."
+      : runtimeState === "models_unavailable"
+        ? "模型尚未加载，暂时无法发送消息"
+        : runtimeState === "unavailable"
+          ? "Agent 服务未就绪，暂时无法发送消息"
+          : "描述你的分析目标，或点击上方指令库...";
   const selectedModelOption = modelOptions.find((model) => model.id === selectedModel);
+  const selectedApprovalModeOption = getApprovalModeOption(approvalMode);
 
   React.useImperativeHandle(
     ref,
@@ -102,10 +146,10 @@ export const AgentComposer = React.forwardRef<AgentComposerHandle, AgentComposer
 
   const handleSend = React.useCallback(() => {
     const prompt = input.trim();
-    if (!prompt || isStreaming || isHydrating) return;
+    if (!prompt || isStreaming || isHydrating || !isRuntimeReady) return;
     setInput("");
     onSend(prompt);
-  }, [input, isHydrating, isStreaming, onSend]);
+  }, [input, isHydrating, isRuntimeReady, isStreaming, onSend]);
 
   return (
     <Box sx={{ px: 2, pb: 2, pt: 1, zIndex: 10 }}>
@@ -154,6 +198,7 @@ export const AgentComposer = React.forwardRef<AgentComposerHandle, AgentComposer
                   label={prompt.replace(/[。.]$/, "")}
                   size="medium"
                   clickable
+                  disabled={!isRuntimeReady || isHydrating || isStreaming}
                   onClick={() => {
                     setInput(prompt);
                     setIsPresetOpen(false);
@@ -209,12 +254,12 @@ export const AgentComposer = React.forwardRef<AgentComposerHandle, AgentComposer
                 handleSend();
               }
             }}
-            placeholder={isHydrating ? "正在加载对话记录..." : "描述你的分析目标，或点击上方指令库..."}
+            placeholder={placeholder}
             fullWidth
             multiline
             maxRows={5}
             variant="standard"
-            disabled={isHydrating}
+            disabled={isHydrating || !isRuntimeReady}
             InputProps={{
               disableUnderline: true,
               sx: { px: 1, py: 0.5, fontSize: "1rem", lineHeight: 1.6, fontWeight: 500, color: "text.primary" },
@@ -223,26 +268,33 @@ export const AgentComposer = React.forwardRef<AgentComposerHandle, AgentComposer
 
           <Stack direction="row" alignItems="center" justifyContent="space-between" sx={{ mt: 2 }}>
             <Stack direction="row" spacing={0.5} alignItems="center">
-              <FormControl size="small" sx={{ minWidth: 96 }}>
+              <FormControl size="small" sx={{ minWidth: 128 }}>
                 <Select
                   value={approvalMode}
                   onChange={(event) =>
                     onApprovalModeChange(event.target.value as AgentApprovalMode)
                   }
-                  disabled={isHydrating || isStreaming}
+                  disabled={isHydrating || isStreaming || !isRuntimeReady}
                   aria-label="权限批准模式"
-                  renderValue={(val) => (
+                  renderValue={() => {
+                    const SelectedApprovalIcon = selectedApprovalModeOption.icon;
+                    return (
                       <Box sx={{ display: "flex", alignItems: "center", gap: 0.45 }}>
-                      {val === "always" ? (
-                        <AdminPanelSettingsRounded sx={{ fontSize: 18, color: "inherit" }} />
-                      ) : (
-                        <VerifiedUserRounded sx={{ fontSize: 18, color: "inherit" }} />
-                      )}
+                        <SelectedApprovalIcon
+                          sx={{
+                            fontSize: 18,
+                            color:
+                              selectedApprovalModeOption.value === "always"
+                                ? "warning.main"
+                                : "inherit",
+                          }}
+                        />
                         <Typography sx={{ fontSize: "0.75rem", fontWeight: 600, color: "inherit" }}>
-                        {val === "always" ? "始终允许" : "请求批准"}
+                          {selectedApprovalModeOption.label}
                         </Typography>
                       </Box>
-                  )}
+                    );
+                  }}
                   MenuProps={{
                     anchorOrigin: { vertical: "top", horizontal: "left" },
                     transformOrigin: { vertical: "bottom", horizontal: "left" },
@@ -250,7 +302,7 @@ export const AgentComposer = React.forwardRef<AgentComposerHandle, AgentComposer
                     PaperProps: {
                       sx: {
                         mb: 1.5,
-                        width: 210,
+                        width: 248,
                         borderRadius: 4,
                         bgcolor: alpha("#fff", 0.9),
                         backdropFilter: "blur(24px)",
@@ -269,6 +321,7 @@ export const AgentComposer = React.forwardRef<AgentComposerHandle, AgentComposer
                             "&:hover": { bgcolor: alpha("#00acc1", 0.12) },
                             "& .title": { color: "#00838f" },
                             "& .icon": { color: "#00acc1" },
+                            "& .always-icon": { color: "warning.main" },
                           },
                         },
                       },
@@ -298,20 +351,47 @@ export const AgentComposer = React.forwardRef<AgentComposerHandle, AgentComposer
                     },
                   }}
                 >
-                  <MenuItem value="request">
-                    <VerifiedUserRounded className="icon" sx={{ mr: 1.5, mt: 0.15, fontSize: 18, color: "text.secondary" }} />
+                  {approvalModeOptions.map((option) => {
+                    const ApprovalIcon = option.icon;
+                    const isAlways = option.value === "always";
+                    return (
+                      <MenuItem key={option.value} value={option.value}>
+                        <ApprovalIcon
+                          className={isAlways ? "icon always-icon" : "icon"}
+                          sx={{
+                            mr: 1.5,
+                            mt: 0.15,
+                            fontSize: 18,
+                            color: isAlways ? "warning.main" : "text.secondary",
+                          }}
+                        />
                         <Box>
-                      <Typography className="title" sx={{ fontSize: "0.85rem", fontWeight: 700, color: "text.primary", mb: 0.2 }}>请求批准</Typography>
-                      <Typography sx={{ fontSize: "0.7rem", fontWeight: 500, color: "text.secondary", lineHeight: 1.3 }}>工具权限逐次确认</Typography>
-                    </Box>
-                  </MenuItem>
-                  <MenuItem value="always">
-                    <AdminPanelSettingsRounded className="icon" sx={{ mr: 1.5, mt: 0.15, fontSize: 18, color: "text.secondary" }} />
-                    <Box>
-                      <Typography className="title" sx={{ fontSize: "0.85rem", fontWeight: 700, color: "text.primary", mb: 0.2 }}>始终允许</Typography>
-                      <Typography sx={{ fontSize: "0.7rem", fontWeight: 500, color: "text.secondary", lineHeight: 1.3 }}>自动允许本轮权限请求</Typography>
+                          <Typography
+                            className="title"
+                            sx={{
+                              mb: 0.2,
+                              color: "text.primary",
+                              fontSize: "0.85rem",
+                              fontWeight: 700,
+                            }}
+                          >
+                            {option.label}
+                          </Typography>
+                          <Typography
+                            sx={{
+                              color: "text.secondary",
+                              fontSize: "0.7rem",
+                              fontWeight: 500,
+                              lineHeight: 1.3,
+                              whiteSpace: "nowrap",
+                            }}
+                          >
+                            {option.description}
+                          </Typography>
                         </Box>
                       </MenuItem>
+                    );
+                  })}
                 </Select>
               </FormControl>
             </Stack>
@@ -452,7 +532,7 @@ export const AgentComposer = React.forwardRef<AgentComposerHandle, AgentComposer
                 ) : (
                   <IconButton
                     onClick={onStartListening}
-                    disabled={isStreaming || isHydrating}
+                    disabled={isStreaming || isHydrating || !isRuntimeReady}
                     aria-label="语音输入"
                     size="small"
                     sx={{ color: "text.secondary", width: 36, height: 36, bgcolor: alpha("#fff", 0.6) }}

src/components/chat/AgentHeader.tsx

@@ -19,12 +19,14 @@ import CloseRounded from "@mui/icons-material/CloseRounded";
 import EditRounded from "@mui/icons-material/EditRounded";
 import EditNoteRounded from "@mui/icons-material/EditNoteRounded";
 import HistoryRounded from "@mui/icons-material/HistoryRounded";
+import type { AgentRuntimeState } from "@/lib/agentRuntime";
 
 type AgentHeaderProps = {
   sessionTitle?: string;
   canRenameSessionTitle?: boolean;
   isHydrating?: boolean;
   isStreaming: boolean;
+  runtimeState?: AgentRuntimeState;
   isHistoryOpen: boolean;
   onHistoryToggle: () => void;
   onRenameSessionTitle?: (title: string) => void;
@@ -37,6 +39,7 @@ export const AgentHeader = ({
   canRenameSessionTitle = false,
   isHydrating = false,
   isStreaming,
+  runtimeState = "ready",
   isHistoryOpen,
   onHistoryToggle,
   onRenameSessionTitle,
@@ -47,6 +50,14 @@ export const AgentHeader = ({
   const displayTitle = sessionTitle?.trim() || "新对话";
   const [isEditingTitle, setIsEditingTitle] = React.useState(false);
   const [draftTitle, setDraftTitle] = React.useState(sessionTitle?.trim() || "");
+  const runtimeStatus =
+    runtimeState === "unavailable" || runtimeState === "models_unavailable"
+      ? { color: "#e53935", label: "Agent 服务未就绪" }
+      : runtimeState === "checking"
+        ? { color: "#ffb300", label: "正在连接 Agent 服务" }
+        : isStreaming
+          ? { color: "#ff9800", label: "Agent 正在生成" }
+          : { color: "#00e676", label: "Agent 已就绪" };
 
   React.useEffect(() => {
     if (!isEditingTitle) {
@@ -109,17 +120,19 @@ export const AgentHeader = ({
               />
             </Avatar>
             <Box
+              role="status"
+              aria-label={runtimeStatus.label}
               sx={{
                 position: "absolute",
                 bottom: -2,
                 right: -2,
                 width: 14,
                 height: 14,
-                bgcolor: isStreaming ? "#ff9800" : "#00e676",
+                bgcolor: runtimeStatus.color,
                 borderRadius: "50%",
                 border: "2.5px solid #fff",
-                boxShadow: `0 0 10px ${isStreaming ? "#ff9800" : "#00e676"}`,
-                animation: isStreaming ? "pulse 1.5s infinite" : "none",
+                boxShadow: `0 0 10px ${runtimeStatus.color}`,
+                animation: isStreaming && runtimeState === "ready" ? "pulse 1.5s infinite" : "none",
                 "@keyframes pulse": {
                   "0%": { boxShadow: `0 0 0 0 ${alpha("#ff9800", 0.7)}` },
                   "70%": { boxShadow: `0 0 0 6px ${alpha("#ff9800", 0)}` },

src/components/chat/AgentPermissionRequests.tsx

@@ -19,12 +19,12 @@ import TerminalRounded from "@mui/icons-material/TerminalRounded";
 import FolderOpenRounded from "@mui/icons-material/FolderOpenRounded";
 import CheckCircleRounded from "@mui/icons-material/CheckCircleRounded";
 import BlockRounded from "@mui/icons-material/BlockRounded";
-import PushPinRounded from "@mui/icons-material/PushPinRounded";
 import KeyboardArrowDownRounded from "@mui/icons-material/KeyboardArrowDownRounded";
 import KeyboardArrowUpRounded from "@mui/icons-material/KeyboardArrowUpRounded";
 import VerifiedUserRounded from "@mui/icons-material/VerifiedUserRounded";
+import GppGoodRounded from "@mui/icons-material/GppGoodRounded";
 
-import type { PermissionReply } from "@/lib/chatStream";
+import type { PermissionDecision } from "@/lib/chatStream";
 import type { Message } from "./GlobalChatbox.types";
 
 const getPermissionTitle = (permission: NonNullable<Message["permissions"]>[number]) => {
@@ -58,7 +58,7 @@ const PermissionIcon = ({
 };
 
 const getPermissionStatusLabel = (status: NonNullable<Message["permissions"]>[number]["status"]) => {
-  if (status === "approved_always") return "已始终允许";
+  if (status === "approved_always") return "已保存授权";
   if (status === "approved_once") return "已允许一次";
   if (status === "rejected") return "已拒绝";
   if (status === "aborted") return "已中断";
@@ -99,7 +99,7 @@ const PermissionRequestCard = ({
 }: {
   permission: NonNullable<Message["permissions"]>[number];
   isRunning: boolean;
-  onReply: (requestId: string, reply: PermissionReply) => void;
+  onReply: (requestId: string, reply: PermissionDecision) => void;
 }) => {
   const theme = useTheme();
   const isPending =
@@ -109,6 +109,9 @@ const PermissionRequestCard = ({
   const accentColor = getPermissionStatusColor(permission.status, theme);
   const statusTextColor = getPermissionStatusTextColor(permission.status, theme);
   const statusLabel = getPermissionStatusLabel(permission.status);
+  const persistentScope = permission.always.length > 0
+    ? permission.always
+    : permission.patterns;
 
   return (
     <Box
@@ -203,6 +206,29 @@ const PermissionRequestCard = ({
             {primaryValue}
           </Typography>
         </Box>
+        {isPending || isSubmitting ? (
+          <Box
+            sx={{
+              px: 1.25,
+              py: 0.85,
+              borderRadius: 2.5,
+              bgcolor: alpha(theme.palette.success.main, 0.055),
+              border: `1px solid ${alpha(theme.palette.success.main, 0.11)}`,
+            }}
+          >
+            <Typography variant="caption" color="success.dark" fontWeight={800}>
+              保存授权范围
+            </Typography>
+            <Typography
+              variant="caption"
+              color="text.secondary"
+              fontFamily={permission.permission === "bash" ? "monospace" : undefined}
+              sx={{ display: "block", mt: 0.2, lineHeight: 1.45, wordBreak: "break-word", whiteSpace: "pre-wrap" }}
+            >
+              {persistentScope.join("\n")}
+            </Typography>
+          </Box>
+        ) : null}
       </Stack>
 
       {permission.error ? (
@@ -264,10 +290,11 @@ const PermissionRequestCard = ({
           </Button>
           <Button
             size="small"
+            color="success"
             variant="outlined"
             disabled={isSubmitting}
             onClick={() => onReply(permission.requestId, "always")}
-              startIcon={<PushPinRounded fontSize="small" />}
+            startIcon={<GppGoodRounded fontSize="small" />}
             sx={{
               height: 34,
               borderRadius: "17px",
@@ -275,16 +302,15 @@ const PermissionRequestCard = ({
               fontWeight: 800,
               fontSize: "0.78rem",
               textTransform: "none",
-                color: "#00838f",
-                borderColor: alpha("#00838f", 0.24),
+              borderColor: alpha(theme.palette.success.main, 0.28),
               bgcolor: alpha("#fff", 0.45),
               "&:hover": {
-                  borderColor: alpha("#00838f", 0.36),
-                  bgcolor: alpha("#00838f", 0.08),
+                borderColor: alpha(theme.palette.success.main, 0.42),
+                bgcolor: alpha(theme.palette.success.main, 0.08),
               },
             }}
           >
-              始终允许
+            保存授权
           </Button>
           <Button
             size="small"
@@ -323,7 +349,7 @@ export const PermissionRequestGroup = ({
 }: {
   permissions: NonNullable<Message["permissions"]>;
   isRunning: boolean;
-  onReply: (requestId: string, reply: PermissionReply) => void;
+  onReply: (requestId: string, reply: PermissionDecision) => void;
 }) => {
   const theme = useTheme();
   const onceCount = permissions.filter((permission) => permission.status === "approved_once").length;
@@ -348,7 +374,7 @@ export const PermissionRequestGroup = ({
   const summaryItems = [
     { label: "共", value: permissions.length, color: theme.palette.text.secondary },
     { label: "允许一次", value: onceCount, color: getPermissionStatusColor("approved_once", theme), textColor: getPermissionStatusTextColor("approved_once", theme) },
-    { label: "始终允许", value: alwaysCount, color: getPermissionStatusColor("approved_always", theme), textColor: getPermissionStatusTextColor("approved_always", theme) },
+    { label: "保存授权", value: alwaysCount, color: getPermissionStatusColor("approved_always", theme), textColor: getPermissionStatusTextColor("approved_always", theme) },
     { label: "拒绝", value: rejectedCount, color: getPermissionStatusColor("rejected", theme), textColor: getPermissionStatusTextColor("rejected", theme) },
     { label: "中断", value: abortedCount, color: getPermissionStatusColor("aborted", theme), textColor: getPermissionStatusTextColor("aborted", theme) },
   ];

src/components/chat/AgentTurn.test.tsx

@@ -112,4 +112,56 @@ describe("AgentTurn speech selection", () => {
       expect(screen.queryByRole("button", { name: "从这里开始朗读" })).not.toBeInTheDocument();
     });
   });
+
+  it("offers one-time and saved permission approval with distinct actions", () => {
+    const onReplyPermission = jest.fn();
+    render(
+      <AgentTurn
+        message={{
+          id: "assistant-permission",
+          role: "assistant",
+          content: "",
+          progress: [
+            {
+              id: "permission-progress",
+              phase: "permission",
+              status: "running",
+              title: "等待权限确认",
+            },
+          ],
+          permissions: [
+            {
+              requestId: "permission-1",
+              sessionId: "session-1",
+              permission: "bash",
+              patterns: ["npm test"],
+              target: "npm test",
+              always: ["npm test"],
+              createdAt: 1,
+              status: "pending",
+            },
+          ],
+        }}
+        isStreaming
+        messageSpeechState="idle"
+        onSpeak={jest.fn()}
+        onPause={jest.fn()}
+        onResume={jest.fn()}
+        onStopSpeech={jest.fn()}
+        isTtsSupported
+        onCreateBranch={jest.fn()}
+        onReplyPermission={onReplyPermission}
+        onReplyQuestion={jest.fn()}
+        onRejectQuestion={jest.fn()}
+      />,
+    );
+
+    expect(screen.getByRole("button", { name: "允许一次" })).toBeInTheDocument();
+    expect(screen.getByText("保存授权范围")).toBeInTheDocument();
+    expect(screen.getAllByText("npm test")).toHaveLength(2);
+    expect(screen.getByTestId("GppGoodRoundedIcon")).toBeInTheDocument();
+    fireEvent.click(screen.getByRole("button", { name: "保存授权" }));
+    expect(onReplyPermission).toHaveBeenCalledWith("permission-1", "always");
+    expect(screen.getByRole("button", { name: "拒绝" })).toBeInTheDocument();
+  });
 });

src/components/chat/AgentTurn.tsx

@@ -20,7 +20,7 @@ import {
 } from "@mui/material";
 import ContentCopyRounded from "@mui/icons-material/ContentCopyRounded";
 import { TbArrowsSplit2 } from "react-icons/tb";
-import type { PermissionReply } from "@/lib/chatStream";
+import type { PermissionDecision } from "@/lib/chatStream";
 import {
   parseAssistantMessageSections,
   parseContentWithToolCalls,
@@ -100,7 +100,7 @@ type AgentTurnProps = {
   onStopSpeech: () => void;
   isTtsSupported: boolean;
   onCreateBranch: (messageId: string) => void;
-  onReplyPermission: (requestId: string, reply: PermissionReply) => void;
+  onReplyPermission: (requestId: string, reply: PermissionDecision) => void;
   onReplyQuestion: (requestId: string, answers: string[][]) => void;
   onRejectQuestion: (requestId: string) => void;
 };

src/components/chat/AgentWorkspace.test.tsx

@@ -1,7 +1,7 @@
 /* eslint-disable @next/next/no-img-element */
 import "@testing-library/jest-dom";
 import React from "react";
-import { render, screen } from "@testing-library/react";
+import { fireEvent, render, screen } from "@testing-library/react";
 
 import { AgentWorkspace } from "./AgentWorkspace";
 import type { Message } from "./GlobalChatbox.types";
@@ -85,6 +85,38 @@ describe("AgentWorkspace", () => {
     expect(screen.queryByText("我已就绪，请描述任务")).not.toBeInTheDocument();
   });
 
+  it("shows runtime startup failures in the existing empty state and retries there", () => {
+    const onRetryRuntime = jest.fn();
+    render(
+      <AgentWorkspace
+        {...defaultProps}
+        isStreaming={false}
+        runtimeState="unavailable"
+        onRetryRuntime={onRetryRuntime}
+        messages={[]}
+      />,
+    );
+
+    expect(screen.getByText("Agent 服务未就绪")).toBeInTheDocument();
+    expect(screen.queryByText("我已就绪，请描述任务")).not.toBeInTheDocument();
+    fireEvent.click(screen.getByRole("button", { name: "重新检测" }));
+    expect(onRetryRuntime).toHaveBeenCalledTimes(1);
+  });
+
+  it("distinguishes model loading failures from backend startup failures", () => {
+    render(
+      <AgentWorkspace
+        {...defaultProps}
+        isStreaming={false}
+        runtimeState="models_unavailable"
+        messages={[]}
+      />,
+    );
+
+    expect(screen.getByText("模型未加载")).toBeInTheDocument();
+    expect(screen.getByText(/模型配置加载失败/)).toBeInTheDocument();
+  });
+
   it("keeps stable history turns from re-rendering while the last assistant message streams", () => {
     const userMessage: Message = {
       id: "user-1",
@@ -164,4 +196,49 @@ describe("AgentWorkspace", () => {
     expect(unmountCounts.get("assistant-1") ?? 0).toBe(0);
     expect(streamingFlags.get("assistant-1")).toBe(false);
   });
+
+  it("windows long conversations instead of mounting every turn", () => {
+    const messages = Array.from({ length: 200 }, (_, index): Message => ({
+      id: `message-${index}`,
+      role: index % 2 === 0 ? "user" : "assistant",
+      content: `message ${index}`,
+    }));
+
+    render(
+      <AgentWorkspace
+        {...defaultProps}
+        isStreaming={false}
+        messages={messages}
+      />,
+    );
+
+    expect(renderCounts.size).toBeGreaterThan(0);
+    expect(renderCounts.size).toBeLessThan(40);
+  });
+
+  it("keeps visible turns mounted when crossing the windowing threshold", () => {
+    const messages = Array.from({ length: 41 }, (_, index): Message => ({
+      id: `message-${index}`,
+      role: index % 2 === 0 ? "user" : "assistant",
+      content: `message ${index}`,
+    }));
+    const { rerender } = render(
+      <AgentWorkspace
+        {...defaultProps}
+        isStreaming={false}
+        messages={messages.slice(0, 40)}
+      />,
+    );
+
+    rerender(
+      <AgentWorkspace
+        {...defaultProps}
+        isStreaming={false}
+        messages={messages}
+      />,
+    );
+
+    expect(mountCounts.get("message-0")).toBe(1);
+    expect(unmountCounts.get("message-0") ?? 0).toBe(0);
+  });
 });

src/components/chat/AgentWorkspace.tsx

@@ -3,14 +3,16 @@
 import Image from "next/image";
 import React from "react";
 import { AnimatePresence, motion } from "framer-motion";
-import { Box, Paper, Skeleton, Stack, Typography, alpha, useTheme, Grid } from "@mui/material";
+import { Box, Button, CircularProgress, Paper, Skeleton, Stack, Typography, alpha, Grid } from "@mui/material";
 import WaterDropRounded from "@mui/icons-material/WaterDropRounded";
 import SensorsRounded from "@mui/icons-material/SensorsRounded";
 import TroubleshootRounded from "@mui/icons-material/TroubleshootRounded";
 import MapRounded from "@mui/icons-material/MapRounded";
+import ReplayRounded from "@mui/icons-material/ReplayRounded";
 
 import { AgentTurn } from "./AgentTurn";
-import type { PermissionReply } from "@/lib/chatStream";
+import type { AgentRuntimeState } from "@/lib/agentRuntime";
+import type { PermissionDecision } from "@/lib/chatStream";
 import type {
   Message,
   SpeechState,
@@ -19,6 +21,8 @@ import type {
 type AgentWorkspaceProps = {
   messages: Message[];
   isStreaming: boolean;
+  runtimeState?: AgentRuntimeState;
+  onRetryRuntime?: () => void;
   isLoadingSession?: boolean;
   scrollContainerRef?: React.RefObject<HTMLDivElement | null>;
   bottomRef: React.RefObject<HTMLDivElement | null>;
@@ -35,13 +39,15 @@ type AgentWorkspaceProps = {
   onStopSpeech: () => void;
   isTtsSupported: boolean;
   onCreateBranch: (messageId: string) => void;
-  onReplyPermission: (requestId: string, reply: PermissionReply) => void;
+  onReplyPermission: (requestId: string, reply: PermissionDecision) => void;
   onReplyQuestion: (requestId: string, answers: string[][]) => void;
   onRejectQuestion: (requestId: string) => void;
 };
 
 type TurnListProps = {
   messages: Message[];
+  scrollTop: number;
+  viewportHeight: number;
   isAssistantStreaming: boolean;
   streamingMessageId: string | null;
   speakingMessageId: string | null;
@@ -56,13 +62,18 @@ type TurnListProps = {
   onStopSpeech: () => void;
   isTtsSupported: boolean;
   onCreateBranch: (messageId: string) => void;
-  onReplyPermission: (requestId: string, reply: PermissionReply) => void;
+  onReplyPermission: (requestId: string, reply: PermissionDecision) => void;
   onReplyQuestion: (requestId: string, answers: string[][]) => void;
   onRejectQuestion: (requestId: string) => void;
 };
 
 const STREAMING_BOTTOM_RESERVE_PX = 180;
 const STREAMING_NEAR_BOTTOM_THRESHOLD_PX = STREAMING_BOTTOM_RESERVE_PX + 120;
+const TURN_WINDOW_THRESHOLD = 40;
+const TURN_ESTIMATED_HEIGHT_PX = 220;
+const TURN_GAP_PX = 16;
+const TURN_OVERSCAN_PX = 600;
+const DEFAULT_VIEWPORT_HEIGHT_PX = 720;
 
 const sameMessages = (left: Message[], right: Message[]) =>
   left.length === right.length &&
@@ -72,6 +83,8 @@ const TurnItem = React.memo(AgentTurn);
 
 const TurnListInner = ({
   messages,
+  scrollTop,
+  viewportHeight,
   isAssistantStreaming,
   streamingMessageId,
   speakingMessageId,
@@ -86,11 +99,98 @@ const TurnListInner = ({
   onReplyQuestion,
   onRejectQuestion,
 }: TurnListProps) => {
+  const [measuredHeights, setMeasuredHeights] = React.useState(
+    () => new Map<string, number>(),
+  );
+  const isWindowed = messages.length > TURN_WINDOW_THRESHOLD;
+
+  React.useEffect(() => {
+    const activeIds = new Set(messages.map((message) => message.id));
+    setMeasuredHeights((current) => {
+      if ([...current.keys()].every((messageId) => activeIds.has(messageId))) {
+        return current;
+      }
+      return new Map(
+        [...current].filter(([messageId]) => activeIds.has(messageId)),
+      );
+    });
+  }, [messages]);
+
+  const updateMeasuredHeight = React.useCallback(
+    (messageId: string, height: number) => {
+      if (!Number.isFinite(height) || height <= 0) return;
+      const roundedHeight = Math.ceil(height);
+      setMeasuredHeights((current) => {
+        if (current.get(messageId) === roundedHeight) return current;
+        const next = new Map(current);
+        next.set(messageId, roundedHeight);
+        return next;
+      });
+    },
+    [],
+  );
+
+  const turnOffsets = React.useMemo(() => {
+    const offsets = new Array<number>(messages.length + 1).fill(0);
+    if (!isWindowed) return offsets;
+    for (let index = 0; index < messages.length; index += 1) {
+      const message = messages[index];
+      const size =
+        (measuredHeights.get(message.id) ?? TURN_ESTIMATED_HEIGHT_PX) +
+        TURN_GAP_PX;
+      offsets[index + 1] = offsets[index] + size;
+    }
+    return offsets;
+  }, [isWindowed, measuredHeights, messages]);
+
+  const windowState = React.useMemo(() => {
+    if (!isWindowed) {
+      return {
+        endIndex: messages.length,
+        startIndex: 0,
+        topSpacerHeight: 0,
+        bottomSpacerHeight: 0,
+      };
+    }
+
+    const visibleStart = Math.max(0, scrollTop - TURN_OVERSCAN_PX);
+    const visibleEnd = scrollTop + viewportHeight + TURN_OVERSCAN_PX;
+    const startIndex = Math.max(
+      0,
+      lowerBound(turnOffsets, visibleStart, 1) - 1,
+    );
+    const endIndex = lowerBound(turnOffsets, visibleEnd, startIndex);
+
+    const boundedEndIndex = Math.min(
+      messages.length,
+      Math.max(startIndex + 1, endIndex),
+    );
+    return {
+      startIndex,
+      endIndex: boundedEndIndex,
+      topSpacerHeight: turnOffsets[startIndex],
+      bottomSpacerHeight:
+        turnOffsets[messages.length] - turnOffsets[boundedEndIndex],
+    };
+  }, [isWindowed, messages.length, scrollTop, turnOffsets, viewportHeight]);
+
+  const visibleMessages = isWindowed
+    ? messages.slice(windowState.startIndex, windowState.endIndex)
+    : messages;
+
   return (
     <>
-      {messages.map((message) => (
-        <TurnItem
+      {windowState.topSpacerHeight > 0 ? (
+        <Box aria-hidden sx={{ height: windowState.topSpacerHeight, flexShrink: 0 }} />
+      ) : null}
+      {visibleMessages.map((message) => (
+        <MeasuredTurn
           key={message.id}
+          message={message}
+          measure={isWindowed}
+          onHeightChange={updateMeasuredHeight}
+        >
+          <TurnItem
             message={message}
             isStreaming={isAssistantStreaming && message.id === streamingMessageId}
             messageSpeechState={speakingMessageId === message.id ? speechState : "idle"}
@@ -104,15 +204,69 @@ const TurnListInner = ({
             onReplyQuestion={onReplyQuestion}
             onRejectQuestion={onRejectQuestion}
           />
+        </MeasuredTurn>
       ))}
+      {windowState.bottomSpacerHeight > 0 ? (
+        <Box aria-hidden sx={{ height: windowState.bottomSpacerHeight, flexShrink: 0 }} />
+      ) : null}
     </>
   );
 };
 
+const lowerBound = (values: number[], target: number, fromIndex: number) => {
+  let low = Math.max(0, fromIndex);
+  let high = values.length;
+  while (low < high) {
+    const middle = low + Math.floor((high - low) / 2);
+    if (values[middle] < target) low = middle + 1;
+    else high = middle;
+  }
+  return low;
+};
+
+type MeasuredTurnProps = {
+  children: React.ReactNode;
+  measure: boolean;
+  message: Message;
+  onHeightChange: (messageId: string, height: number) => void;
+};
+
+const MeasuredTurn = ({
+  children,
+  measure,
+  message,
+  onHeightChange,
+}: MeasuredTurnProps) => {
+  const rowRef = React.useRef<HTMLDivElement>(null);
+
+  React.useEffect(() => {
+    const row = rowRef.current;
+    if (!measure || !row) return;
+    const measureRow = () =>
+      onHeightChange(message.id, row.getBoundingClientRect().height);
+    measureRow();
+    if (typeof ResizeObserver === "undefined") return;
+    const observer = new ResizeObserver(measureRow);
+    observer.observe(row);
+    return () => observer.disconnect();
+  }, [measure, message.id, onHeightChange]);
+
+  return (
+    <Box
+      ref={rowRef}
+      sx={{ mb: measure ? `${TURN_GAP_PX}px` : 0, flexShrink: 0 }}
+    >
+      {children}
+    </Box>
+  );
+};
+
 const TurnList = React.memo(
   TurnListInner,
   (prevProps, nextProps) =>
     sameMessages(prevProps.messages, nextProps.messages) &&
+    prevProps.scrollTop === nextProps.scrollTop &&
+    prevProps.viewportHeight === nextProps.viewportHeight &&
     prevProps.isAssistantStreaming === nextProps.isAssistantStreaming &&
     prevProps.streamingMessageId === nextProps.streamingMessageId &&
     prevProps.speakingMessageId === nextProps.speakingMessageId &&
@@ -130,8 +284,34 @@ const TurnList = React.memo(
 
 TurnList.displayName = "TurnList";
 
-const EmptyState = () => {
-  const theme = useTheme();
+const EmptyState = ({
+  runtimeState,
+  onRetryRuntime,
+}: {
+  runtimeState: AgentRuntimeState;
+  onRetryRuntime?: () => void;
+}) => {
+  const isReady = runtimeState === "ready";
+  const isChecking = runtimeState === "checking";
+  const statusCopy = isChecking
+    ? {
+        title: "正在连接 Agent 服务",
+        detail: "正在确认后端运行时和模型加载状态，请稍候。",
+      }
+    : runtimeState === "models_unavailable"
+      ? {
+          title: "模型未加载",
+          detail: "Agent 服务已启动，但模型配置加载失败。请检查模型配置后重新检测。",
+        }
+      : runtimeState === "unavailable"
+        ? {
+            title: "Agent 服务未就绪",
+            detail: "无法连接 Agent 后端，或运行时启动失败。请检查服务后重新检测。",
+          }
+        : {
+            title: "我已就绪，请描述任务",
+            detail: "你可以使用自然语言下达指令，我会自主规划决策执行、并在地图上呈现分析结果。",
+          };
   const capabilities = [
     { icon: <WaterDropRounded sx={{ fontSize: 20, color: "#00acc1" }} />, label: "水力瓶颈识别" },
     { icon: <SensorsRounded sx={{ fontSize: 20, color: "#0288d1" }} />, label: "异常状态预警" },
@@ -147,6 +327,8 @@ const EmptyState = () => {
       style={{ margin: "auto", width: "100%", maxWidth: 440, padding: 16 }}
     >
       <Paper
+        role={isReady || isChecking ? "status" : "alert"}
+        aria-live="polite"
         elevation={0}
         sx={{
           p: 4,
@@ -170,9 +352,9 @@ const EmptyState = () => {
         }} />
         <motion.div
           animate={{
-            y: [-6, 4, -6],
-            scale: [1, 1.04, 1],
-            rotate: [-3, 3, -3],
+            y: isReady ? [-6, 4, -6] : 0,
+            scale: isReady ? [1, 1.04, 1] : 1,
+            rotate: isReady ? [-3, 3, -3] : 0,
           }}
           transition={{ duration: 4.8, repeat: Infinity, ease: "easeInOut" }}
           style={{
@@ -194,17 +376,32 @@ const EmptyState = () => {
             height={54}
             style={{
               objectFit: "contain",
-              filter: "drop-shadow(0 4px 12px rgba(0, 131, 143, 0.2))",
+              filter: isReady
+                ? "drop-shadow(0 4px 12px rgba(0, 131, 143, 0.2))"
+                : "grayscale(0.65) opacity(0.72)",
             }}
           />
         </motion.div>
         <Typography variant="h6" color="text.primary" fontWeight={800} gutterBottom>
-          我已就绪，请描述任务
+          {statusCopy.title}
         </Typography>
-        <Typography variant="body2" color="text.secondary" sx={{ lineHeight: 1.6, mb: 3 }}>
-          你可以使用自然语言下达指令，我会自主规划决策执行、并在地图上呈现分析结果。
+        <Typography variant="body2" color="text.secondary" sx={{ lineHeight: 1.6, mb: isReady ? 3 : 2 }}>
+          {statusCopy.detail}
         </Typography>
 
+        {isChecking ? (
+          <CircularProgress size={28} thickness={4} aria-label="正在检测 Agent 服务" />
+        ) : !isReady ? (
+          <Button
+            variant="contained"
+            size="small"
+            startIcon={<ReplayRounded />}
+            onClick={onRetryRuntime}
+            sx={{ borderRadius: 999, px: 2, boxShadow: "none" }}
+          >
+            重新检测
+          </Button>
+        ) : (
           <Grid container spacing={1.5}>
             {capabilities.map((item) => (
               <Grid item xs={6} key={item.label}>
@@ -239,6 +436,7 @@ const EmptyState = () => {
               </Grid>
             ))}
           </Grid>
+        )}
       </Paper>
     </motion.div>
   );
@@ -309,6 +507,8 @@ const SessionLoadingSkeleton = () => (
 export const AgentWorkspace = ({
   messages,
   isStreaming,
+  runtimeState = "ready",
+  onRetryRuntime,
   isLoadingSession = false,
   scrollContainerRef,
   bottomRef,
@@ -325,14 +525,23 @@ export const AgentWorkspace = ({
   onReplyQuestion,
   onRejectQuestion,
 }: AgentWorkspaceProps) => {
+  const localScrollContainerRef = React.useRef<HTMLDivElement>(null);
+  const [scrollMetrics, setScrollMetrics] = React.useState({
+    scrollTop: 0,
+    viewportHeight: DEFAULT_VIEWPORT_HEIGHT_PX,
+  });
   const streamingMessageId =
     isStreaming && messages.at(-1)?.role === "assistant"
       ? messages.at(-1)?.id ?? null
       : null;
   const handleScroll = React.useCallback(
     (event: React.UIEvent<HTMLDivElement>) => {
-      if (!onScrollStateChange) return;
       const target = event.currentTarget;
+      setScrollMetrics({
+        scrollTop: target.scrollTop,
+        viewportHeight: target.clientHeight || DEFAULT_VIEWPORT_HEIGHT_PX,
+      });
+      if (!onScrollStateChange) return;
       const distanceToBottom =
         target.scrollHeight - target.scrollTop - target.clientHeight;
       onScrollStateChange(
@@ -343,9 +552,37 @@ export const AgentWorkspace = ({
     [isStreaming, onScrollStateChange],
   );
 
+  const setScrollContainer = React.useCallback(
+    (node: HTMLDivElement | null) => {
+      localScrollContainerRef.current = node;
+      if (scrollContainerRef) {
+        scrollContainerRef.current = node;
+      }
+    },
+    [scrollContainerRef],
+  );
+
+  React.useEffect(() => {
+    const container = localScrollContainerRef.current;
+    if (!container || typeof ResizeObserver === "undefined") return;
+    const updateViewportHeight = () => {
+      const viewportHeight =
+        container.clientHeight || DEFAULT_VIEWPORT_HEIGHT_PX;
+      setScrollMetrics((current) =>
+        current.viewportHeight === viewportHeight
+          ? current
+          : { ...current, viewportHeight },
+      );
+    };
+    updateViewportHeight();
+    const observer = new ResizeObserver(updateViewportHeight);
+    observer.observe(container);
+    return () => observer.disconnect();
+  }, []);
+
   return (
     <Box
-      ref={scrollContainerRef}
+      ref={setScrollContainer}
       onScroll={handleScroll}
       sx={{
         flex: 1,
@@ -363,13 +600,30 @@ export const AgentWorkspace = ({
       ) : (
         <>
           <AnimatePresence initial={false}>
-            {messages.length === 0 ? <EmptyState /> : null}
+            {messages.length === 0 ? (
+              <EmptyState
+                runtimeState={runtimeState}
+                onRetryRuntime={onRetryRuntime}
+              />
+            ) : null}
           </AnimatePresence>
 
           {messages.length > 0 ? (
-            <Box sx={{ display: "flex", flexDirection: "column", gap: 2 }}>
+            <Box
+              sx={{
+                display: "flex",
+                flexDirection: "column",
+                gap: messages.length > TURN_WINDOW_THRESHOLD ? 0 : 2,
+              }}
+            >
               <TurnList
                 messages={messages}
+                scrollTop={
+                  messages.length > TURN_WINDOW_THRESHOLD
+                    ? scrollMetrics.scrollTop
+                    : 0
+                }
+                viewportHeight={scrollMetrics.viewportHeight}
                 isAssistantStreaming={isStreaming}
                 streamingMessageId={streamingMessageId}
                 speakingMessageId={speakingMessageId}

src/components/chat/GlobalChatbox.test.tsx

@@ -5,6 +5,7 @@ import { act, render, screen } from "@testing-library/react";
 import { GlobalChatbox } from "./GlobalChatbox";
 
 const createSession = jest.fn();
+const mockFetchAgentRuntimeHealth = jest.fn();
 let mockCurrentProjectId = "project-1";
 
 jest.mock("@refinedev/core", () => ({
@@ -15,6 +16,11 @@ jest.mock("@/lib/chatModels", () => ({
   fetchAgentModels: jest.fn(() => new Promise(() => {})),
 }));
 
+jest.mock("@/lib/agentRuntime", () => ({
+  fetchAgentRuntimeHealth: (...args: unknown[]) =>
+    mockFetchAgentRuntimeHealth(...args),
+}));
+
 jest.mock("@/store/projectStore", () => ({
   useProjectStore: (selector: (state: { currentProjectId: string }) => unknown) =>
     selector({ currentProjectId: mockCurrentProjectId }),
@@ -73,12 +79,14 @@ jest.mock("./AgentHistoryPanel", () => ({
 }));
 
 jest.mock("./AgentWorkspace", () => ({
-  AgentWorkspace: () => <div data-testid="agent-workspace">Workspace</div>,
+  AgentWorkspace: ({ runtimeState }: { runtimeState: string }) => (
+    <div data-testid="agent-workspace">Workspace state: {runtimeState}</div>
+  ),
 }));
 
 jest.mock("./AgentComposer", () => ({
-  AgentComposer: React.forwardRef(function MockAgentComposer() {
-    return <div>Composer</div>;
+  AgentComposer: React.forwardRef(function MockAgentComposer(props: { approvalMode: string }, _ref) {
+    return <div>Composer mode: {props.approvalMode}</div>;
   }),
 }));
 
@@ -90,6 +98,8 @@ describe("GlobalChatbox lifecycle", () => {
   beforeEach(() => {
     jest.useFakeTimers();
     createSession.mockClear();
+    mockFetchAgentRuntimeHealth.mockReset();
+    mockFetchAgentRuntimeHealth.mockImplementation(() => new Promise(() => {}));
     mockCurrentProjectId = "project-1";
   });
 
@@ -121,4 +131,19 @@ describe("GlobalChatbox lifecycle", () => {
 
     expect(createSession).toHaveBeenCalledTimes(2);
   });
+
+  it("defaults the composer to automatic permission approval", () => {
+    render(<GlobalChatbox open onClose={jest.fn()} />);
+
+    expect(screen.getByText("Composer mode: auto")).toBeInTheDocument();
+  });
+
+  it("passes backend startup failures into the existing workspace empty state", async () => {
+    mockFetchAgentRuntimeHealth.mockResolvedValueOnce(false);
+    render(<GlobalChatbox open onClose={jest.fn()} />);
+
+    await act(async () => Promise.resolve());
+
+    expect(screen.getByText("Workspace state: unavailable")).toBeInTheDocument();
+  });
 });

src/components/chat/GlobalChatbox.tsx

@@ -10,6 +10,10 @@ import { Box, Drawer, alpha, useTheme } from "@mui/material";
 import { useNotification } from "@refinedev/core";
 
 import { getAccessToken } from "@/lib/authToken";
+import {
+  fetchAgentRuntimeHealth,
+  type AgentRuntimeState,
+} from "@/lib/agentRuntime";
 import { fetchAgentModels, type AgentModelOption } from "@/lib/chatModels";
 import type { AgentApprovalMode, AgentModel } from "@/lib/chatStream";
 import { useProjectStore } from "@/store/projectStore";
@@ -26,6 +30,8 @@ import { useAgentToolActions } from "./hooks/useAgentToolActions";
 
 const STREAMING_BOTTOM_RESERVE_PX = 180;
 const STREAMING_SCROLL_RESTORE_AT_PX = STREAMING_BOTTOM_RESERVE_PX - 36;
+const AGENT_RUNTIME_POLL_MS = 30_000;
+const AGENT_RUNTIME_TIMEOUT_MS = 8_000;
 
 export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
   const [width, setWidth] = useState(520);
@@ -34,8 +40,9 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
   const [isCheckingAuth, setIsCheckingAuth] = useState(false);
   const [modelOptions, setModelOptions] = useState<AgentModelOption[]>([]);
   const [selectedModel, setSelectedModel] = useState<AgentModel | undefined>(undefined);
+  const [runtimeState, setRuntimeState] = useState<AgentRuntimeState>("checking");
   const [approvalMode, setApprovalMode] =
-    useState<AgentApprovalMode>("request");
+    useState<AgentApprovalMode>("auto");
 
   const bottomRef = useRef<HTMLDivElement>(null);
   const workspaceScrollRef = useRef<HTMLDivElement>(null);
@@ -43,6 +50,8 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
   const streamingScrollFrameRef = useRef<number | null>(null);
   const composerRef = useRef<AgentComposerHandle | null>(null);
   const initializedProjectIdRef = useRef<string | null | undefined>(undefined);
+  const runtimeRequestIdRef = useRef(0);
+  const runtimeAbortRef = useRef<AbortController | null>(null);
   const theme = useTheme();
   const { open: openNotification } = useNotification();
   const currentProjectId = useProjectStore((state) => state.currentProjectId);
@@ -68,13 +77,38 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
     isSupported: isSttSupported,
   } = useSpeechRecognition(handleSpeechResult);
 
-  useEffect(() => {
-    let cancelled = false;
+  const refreshAgentRuntime = useCallback(async (showChecking = true) => {
+    const requestId = ++runtimeRequestIdRef.current;
+    runtimeAbortRef.current?.abort();
+    const controller = new AbortController();
+    runtimeAbortRef.current = controller;
+    const timeoutId = window.setTimeout(
+      () => controller.abort(),
+      AGENT_RUNTIME_TIMEOUT_MS,
+    );
+    let runtimeHealthy = false;
+
+    if (showChecking) setRuntimeState("checking");
 
-    const loadModels = async () => {
     try {
-        const modelConfig = await fetchAgentModels();
-        if (cancelled) return;
+      runtimeHealthy = await fetchAgentRuntimeHealth(controller.signal);
+      if (requestId !== runtimeRequestIdRef.current) return;
+      if (!runtimeHealthy) {
+        setRuntimeState("unavailable");
+        setModelOptions([]);
+        setSelectedModel(undefined);
+        return;
+      }
+
+      const modelConfig = await fetchAgentModels(controller.signal);
+      if (requestId !== runtimeRequestIdRef.current) return;
+      if (modelConfig.models.length === 0) {
+        setRuntimeState("models_unavailable");
+        setModelOptions([]);
+        setSelectedModel(undefined);
+        return;
+      }
+
       setModelOptions(modelConfig.models);
       setSelectedModel((current) => {
         if (current && modelConfig.models.some((model) => model.id === current)) {
@@ -82,21 +116,37 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
         }
         return modelConfig.defaultModel;
       });
+      setRuntimeState("ready");
     } catch (error) {
-        console.error("[GlobalChatbox] Failed to load agent models:", error);
-        if (!cancelled) {
+      if (requestId !== runtimeRequestIdRef.current) return;
+      console.error("[GlobalChatbox] Failed to check agent runtime:", error);
+      setRuntimeState(runtimeHealthy ? "models_unavailable" : "unavailable");
       setModelOptions([]);
       setSelectedModel(undefined);
+    } finally {
+      window.clearTimeout(timeoutId);
+      if (runtimeAbortRef.current === controller) {
+        runtimeAbortRef.current = null;
       }
     }
-    };
+  }, []);
 
-    void loadModels();
+  useEffect(() => {
+    if (!open) return;
+
+    void refreshAgentRuntime(true);
+    const intervalId = window.setInterval(
+      () => void refreshAgentRuntime(false),
+      AGENT_RUNTIME_POLL_MS,
+    );
 
     return () => {
-      cancelled = true;
+      window.clearInterval(intervalId);
+      runtimeRequestIdRef.current += 1;
+      runtimeAbortRef.current?.abort();
+      runtimeAbortRef.current = null;
     };
-  }, []);
+  }, [open, refreshAgentRuntime]);
 
   const handleToolCall = useAgentToolActions();
   const {
@@ -203,7 +253,7 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
   }, [createSession, currentProjectId, isHydrating, open, resetConversationView]);
 
   const handleSend = useCallback(async (prompt: string) => {
-    if (isStreaming || isCheckingAuth) return;
+    if (isStreaming || isCheckingAuth || runtimeState !== "ready") return;
 
     setIsCheckingAuth(true);
     try {
@@ -229,7 +279,7 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
     } finally {
       setIsCheckingAuth(false);
     }
-  }, [isCheckingAuth, isStreaming, openNotification, sendPrompt]);
+  }, [isCheckingAuth, isStreaming, openNotification, runtimeState, sendPrompt]);
 
   const handleNewConversation = useCallback(() => {
     handleStopSpeech();
@@ -373,6 +423,7 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
           canRenameSessionTitle={Boolean(activeSessionId)}
           isHydrating={isHydrating}
           isStreaming={isStreaming}
+          runtimeState={runtimeState}
           isHistoryOpen={isHistoryOpen}
           onHistoryToggle={handleHistoryToggle}
           onRenameSessionTitle={handleRenameActiveSession}
@@ -430,6 +481,8 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
             <AgentWorkspace
               messages={messages}
               isStreaming={isStreaming}
+              runtimeState={runtimeState}
+              onRetryRuntime={() => void refreshAgentRuntime(true)}
               isLoadingSession={Boolean(loadingSessionId)}
               scrollContainerRef={workspaceScrollRef}
               bottomRef={bottomRef}
@@ -450,6 +503,7 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
             <AgentComposer
               ref={composerRef}
               isHydrating={isHydrating || isCheckingAuth}
+              runtimeState={runtimeState}
               isStreaming={isStreaming}
               isListening={isListening}
               isSttSupported={isSttSupported}

src/components/chat/hooks/useAgentChatSession.ts

@@ -13,7 +13,7 @@ import {
   resumeAgentChatStream,
   streamAgentChat,
 } from "@/lib/chatStream";
-import type { PermissionReply, StreamEvent } from "@/lib/chatStream";
+import type { PermissionDecision, StreamEvent } from "@/lib/chatStream";
 import { useAuthStore } from "@/store/authStore";
 import type {
   AgentArtifact,
@@ -799,7 +799,7 @@ export const useAgentChatSession = ({
   }, [flushPendingTokens, getLastAssistantMessageId]);
 
   const replyPermission = useCallback(
-    async (requestId: string, reply: PermissionReply) => {
+    async (requestId: string, reply: PermissionDecision) => {
       const target = messagesRef.current
         .flatMap((message) => message.permissions ?? [])
         .find((permission) => permission.requestId === requestId);

src/generated/agentApi.ts

@@ -899,8 +899,11 @@ export interface operations {
                 "application/json": {
                     message: string;
                     model?: string;
-                    /** @enum {string} */
-                    approval_mode?: "request" | "always";
+                    /**
+                     * @description request forwards approval prompts; auto approves only the low-risk allowlist; always approves every prompt not explicitly denied by OpenCode.
+                     * @enum {string}
+                     */
+                    approval_mode?: "request" | "auto" | "always";
                 };
             };
         };

src/lib/agentRuntime.test.ts

@@ -0,0 +1,44 @@
+import { fetchAgentRuntimeHealth } from "./agentRuntime";
+
+const apiFetch = jest.fn();
+
+jest.mock("@/lib/apiFetch", () => ({
+  apiFetch: (...args: unknown[]) => apiFetch(...args),
+}));
+
+describe("fetchAgentRuntimeHealth", () => {
+  beforeEach(() => {
+    apiFetch.mockReset();
+  });
+
+  it("reports ready only after runtime warmup is complete", async () => {
+    apiFetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => ({
+        ok: true,
+        ready: true,
+        warmed_up: true,
+        runtime: { healthy: true },
+      }),
+    });
+
+    await expect(fetchAgentRuntimeHealth()).resolves.toBe(true);
+    expect(apiFetch).toHaveBeenCalledWith(
+      expect.stringContaining("/health"),
+      expect.objectContaining({
+        method: "GET",
+        projectHeaderMode: "omit",
+        skipAuthRedirect: true,
+      }),
+    );
+  });
+
+  it("reports unavailable when runtime health is not ready", async () => {
+    apiFetch.mockResolvedValueOnce({
+      ok: false,
+      json: async () => ({ ok: false, ready: false, warmed_up: true }),
+    });
+
+    await expect(fetchAgentRuntimeHealth()).resolves.toBe(false);
+  });
+});

src/lib/agentRuntime.ts

@@ -0,0 +1,37 @@
+import { apiFetch } from "@/lib/apiFetch";
+import { config } from "@config/config";
+
+export type AgentRuntimeState =
+  | "checking"
+  | "ready"
+  | "unavailable"
+  | "models_unavailable";
+
+type AgentHealthPayload = {
+  ok?: unknown;
+  ready?: unknown;
+  warmed_up?: unknown;
+  runtime?: {
+    healthy?: unknown;
+  };
+};
+
+export const fetchAgentRuntimeHealth = async (
+  signal?: AbortSignal,
+): Promise<boolean> => {
+  const response = await apiFetch(`${config.AGENT_URL}/health`, {
+    method: "GET",
+    signal,
+    projectHeaderMode: "omit",
+    skipAuthRedirect: true,
+  });
+  const payload = (await response.json().catch(() => null)) as AgentHealthPayload | null;
+
+  return Boolean(
+    response.ok &&
+      payload?.ok === true &&
+      payload.ready === true &&
+      payload.warmed_up === true &&
+      payload.runtime?.healthy === true,
+  );
+};

src/lib/chatModels.ts

@@ -46,9 +46,10 @@ const normalizeModelOption = (value: unknown): AgentModelOption | null => {
   };
 };
 
-export const fetchAgentModels = async (): Promise<AgentModelConfig> => {
+export const fetchAgentModels = async (signal?: AbortSignal): Promise<AgentModelConfig> => {
   const response = await apiFetch(`${config.AGENT_URL}/api/v1/agent/models`, {
     method: "GET",
+    signal,
     projectHeaderMode: "include",
     skipAuthRedirect: true,
   });

src/lib/chatStream.test.ts

@@ -390,6 +390,7 @@ describe("streamAgentChat", () => {
         skipAuthRedirect: true,
       }),
     );
+
   });
 
   it("calls permission reply endpoint", async () => {
@@ -413,6 +414,19 @@ describe("streamAgentChat", () => {
         }),
       }),
     );
+
+    await replyAgentPermission("s1", "perm-2", "always");
+
+    expect(apiFetch).toHaveBeenLastCalledWith(
+      expect.stringContaining("/api/v1/agent/sessions/s1/permission-responses"),
+      expect.objectContaining({
+        method: "POST",
+        body: JSON.stringify({
+          request_id: "perm-2",
+          reply: "always",
+        }),
+      }),
+    );
   });
 
   it("submits refreshed credentials through the authenticated context", async () => {

src/lib/chatStream.ts

@@ -8,8 +8,9 @@ const getAgentSessionUrl = (sessionId: string, suffix = "") =>
 
 export type AgentModel = string;
 
-export type PermissionReply = "once" | "always" | "reject";
-export type AgentApprovalMode = "request" | "always";
+export type PermissionDecision = "once" | "always" | "reject";
+export type PermissionReply = PermissionDecision;
+export type AgentApprovalMode = "request" | "auto" | "always";
 
 export type AgentQuestionStatus =
   | "pending"
@@ -664,7 +665,7 @@ export const abortAgentChat = async (sessionId?: string) => {
 export const replyAgentPermission = async (
   sessionId: string,
   requestId: string,
-  reply: PermissionReply,
+  reply: PermissionDecision,
 ) => {
   const response = await apiFetch(
     getAgentSessionUrl(sessionId, "/permission-responses"),