diff --git a/.ai-project/state.yaml b/.ai-project/state.yaml
index 2dc7ec9..6fca727 100644
--- a/.ai-project/state.yaml
+++ b/.ai-project/state.yaml
@@ -47,10 +47,10 @@
     状态: "已完成"
   - 编号: "F-008"
     名称: "会话管理与个人设置"
-    状态: "进行中"
+    状态: "已完成"
   - 编号: "F-009"
     名称: "Claude Desktop 视觉与交互收口"
-    状态: "待开始"
+    状态: "进行中"
   - 编号: "F-010"
     名称: "恢复、边界与发布前加固"
     状态: "待开始"
diff --git a/apps/web-server/src/composition/create-app.ts b/apps/web-server/src/composition/create-app.ts
index 66d0226..1b2657d 100644
--- a/apps/web-server/src/composition/create-app.ts
+++ b/apps/web-server/src/composition/create-app.ts
@@ -10,12 +10,14 @@ import type {
   ProjectService,
   InteractionService,
   WorkspaceService,
+  SettingsService,
 } from "@great-agent/agent-core";
 import type { RunRegistry } from "./run-registry";
 import { createRunRoutes } from "../routes/runs";
 import { createProjectRoutes } from "../routes/projects";
 import { createInteractionRoutes } from "../routes/interactions";
 import { createWorkspaceRoutes } from "../routes/workspace";
+import { createSettingsRoutes } from "../routes/settings";
 
 export function createApp(
   logger: Logger,
@@ -25,6 +27,7 @@ export function createApp(
   projects?: ProjectService,
   interactions?: InteractionService,
   workspace?: WorkspaceService,
+  settings?: SettingsService,
 ): Hono {
   const app = new Hono();
   app.use("*", requestId);
@@ -39,5 +42,6 @@ export function createApp(
   if (interactions && runs && runRegistry)
     app.route("/api", createInteractionRoutes(interactions, runs, runRegistry));
   if (workspace) app.route("/api", createWorkspaceRoutes(workspace));
+  if (settings) app.route("/api", createSettingsRoutes(settings));
   return app;
 }
diff --git a/apps/web-server/src/http/error-handler.ts b/apps/web-server/src/http/error-handler.ts
index a7b35e2..a9675af 100644
--- a/apps/web-server/src/http/error-handler.ts
+++ b/apps/web-server/src/http/error-handler.ts
@@ -27,7 +27,8 @@ export function createErrorHandler(logger: Logger): ErrorHandler {
           ? 404
           : error.code === "PROJECT_RUN_ACTIVE" ||
               error.code === "INTERACTION_ALREADY_RESOLVED" ||
-              error.code === "RUN_ALREADY_ACTIVE"
+              error.code === "RUN_ALREADY_ACTIVE" ||
+              error.code === "CONVERSATION_RUN_ACTIVE"
             ? 409
             : 400;
       return context.json(
diff --git a/apps/web-server/src/index.ts b/apps/web-server/src/index.ts
index 0727e0e..65e9812 100644
--- a/apps/web-server/src/index.ts
+++ b/apps/web-server/src/index.ts
@@ -4,6 +4,7 @@ import {
   FileRunRepository,
   FileProjectRepository,
   FileInteractionRepository,
+  FileSettingsRepository,
   createDataLayout,
   ensureDataLayout,
 } from "@great-agent/local-data";
@@ -15,6 +16,7 @@ import {
   CoreError,
   type ModelPort,
   WorkspaceService,
+  SettingsService,
 } from "@great-agent/agent-core";
 import { DeepSeekModelAdapter } from "@great-agent/model-deepseek";
 import { createApp } from "./composition/create-app";
@@ -39,6 +41,7 @@ const runRepository = new FileRunRepository(layout);
 const interactionRepository = new FileInteractionRepository(layout);
 const conversations = new ConversationService({
   conversations: conversationRepository,
+  runs: runRepository,
   clock,
   ids,
 });
@@ -55,11 +58,21 @@ const interactions = new InteractionService({
   clock,
   ids,
 });
+const workspaceResolver = new LocalWorkspaceResolver();
+const settings = new SettingsService({
+  settings: new FileSettingsRepository(layout),
+  workspaces: workspaceResolver,
+  clock,
+  initialWorkspaceRoot: environment.defaultWorkspaceRoot,
+  model: environment.deepSeekModel,
+  modelConfigured: Boolean(environment.deepSeekApiKey),
+  version: "0.1.0",
+});
 const workspace = new WorkspaceService(
   new LocalWorkspaceFiles(),
   conversations,
   projects,
-  environment.defaultWorkspaceRoot,
+  () => settings.getDefaultWorkspaceRoot(),
   clock,
 );
 const model: ModelPort = environment.deepSeekApiKey
@@ -96,6 +109,7 @@ const app = createApp(
   projects,
   interactions,
   workspace,
+  settings,
 );
 mountStaticWeb(app, resolve(import.meta.dir, "../../web/dist"));
 
diff --git a/apps/web-server/src/routes/conversations.test.ts b/apps/web-server/src/routes/conversations.test.ts
index 432bdb4..ba8d515 100644
--- a/apps/web-server/src/routes/conversations.test.ts
+++ b/apps/web-server/src/routes/conversations.test.ts
@@ -27,6 +27,12 @@ class MemoryRepository implements ConversationRepository {
   async create(value: Conversation) {
     this.values.set(value.id, value);
   }
+  async update(value: Conversation) {
+    this.values.set(value.id, value);
+  }
+  async delete(id: string) {
+    this.values.delete(id);
+  }
   async appendMessage(id: string, message: Conversation["messages"][number]) {
     const current = this.values.get(id);
     if (!current) throw new Error("not found");
@@ -50,6 +56,16 @@ function createTestApp() {
   return createApp(pino({ enabled: false }), service);
 }
 
+function createTestFixture() {
+  let id = 0;
+  const service = new ConversationService({
+    conversations: new MemoryRepository(),
+    clock: { now: () => new Date("2026-08-14T08:00:00Z") },
+    ids: { create: () => `manage_${++id}` },
+  });
+  return { service, app: createApp(pino({ enabled: false }), service) };
+}
+
 describe("普通会话路由", () => {
   test("会话路由只提供查询，消息必须通过 Run 创建", async () => {
     const app = createTestApp();
@@ -61,4 +77,26 @@ describe("普通会话路由", () => {
     });
     expect(directWrite.status).toBe(404);
   });
+
+  test("通过接口重命名和删除已有会话", async () => {
+    const { app, service } = createTestFixture();
+    const conversation = await service.createWithFirstMessage(
+      "原名称",
+      "run_1",
+    );
+    const renamed = await app.request(`/api/conversations/${conversation.id}`, {
+      method: "PATCH",
+      headers: { "content-type": "application/json" },
+      body: JSON.stringify({ title: "新名称" }),
+    });
+    expect(renamed.status).toBe(200);
+    expect((await renamed.json()).title).toBe("新名称");
+    const removed = await app.request(`/api/conversations/${conversation.id}`, {
+      method: "DELETE",
+    });
+    expect(removed.status).toBe(204);
+    expect(service.getConversation(conversation.id)).rejects.toMatchObject({
+      code: "CONVERSATION_NOT_FOUND",
+    });
+  });
 });
diff --git a/apps/web-server/src/routes/conversations.ts b/apps/web-server/src/routes/conversations.ts
index 4a55bb7..3801ce8 100644
--- a/apps/web-server/src/routes/conversations.ts
+++ b/apps/web-server/src/routes/conversations.ts
@@ -3,6 +3,7 @@ import type {
   ConversationService,
   WorkspaceService,
 } from "@great-agent/agent-core";
+import { renameConversationRequestSchema } from "@great-agent/web-contracts";
 
 export function createConversationRoutes(
   service: ConversationService,
@@ -20,5 +21,17 @@ export function createConversationRoutes(
         : conversation,
     );
   });
+  routes.patch("/conversations/:id", async (context) => {
+    const input = renameConversationRequestSchema.parse(
+      await context.req.json(),
+    );
+    return context.json(
+      await service.rename(context.req.param("id"), input.title),
+    );
+  });
+  routes.delete("/conversations/:id", async (context) => {
+    await service.delete(context.req.param("id"));
+    return context.body(null, 204);
+  });
   return routes;
 }
diff --git a/apps/web-server/src/routes/runs.test.ts b/apps/web-server/src/routes/runs.test.ts
index a6cb10e..ca58574 100644
--- a/apps/web-server/src/routes/runs.test.ts
+++ b/apps/web-server/src/routes/runs.test.ts
@@ -41,6 +41,12 @@ class Conversations implements ConversationRepository {
   async create(value: Conversation) {
     this.value = value;
   }
+  async update(value: Conversation) {
+    this.value = value;
+  }
+  async delete(id: string) {
+    if (this.value?.id === id) this.value = null;
+  }
   async appendMessage(_id: string, message: Conversation["messages"][number]) {
     if (!this.value) throw new Error("not found");
     this.value = { ...this.value, messages: [...this.value.messages, message] };
diff --git a/apps/web-server/src/routes/settings.ts b/apps/web-server/src/routes/settings.ts
new file mode 100644
index 0000000..659cf93
--- /dev/null
+++ b/apps/web-server/src/routes/settings.ts
@@ -0,0 +1,13 @@
+import { Hono } from "hono";
+import type { SettingsService } from "@great-agent/agent-core";
+import { updateSettingsRequestSchema } from "@great-agent/web-contracts";
+
+export function createSettingsRoutes(service: SettingsService): Hono {
+  const routes = new Hono();
+  routes.get("/settings", async (context) => context.json(await service.get()));
+  routes.patch("/settings", async (context) => {
+    const input = updateSettingsRequestSchema.parse(await context.req.json());
+    return context.json(await service.update(input));
+  });
+  return routes;
+}
diff --git a/apps/web/src/api/conversations.ts b/apps/web/src/api/conversations.ts
index b6f57ea..b2e1943 100644
--- a/apps/web/src/api/conversations.ts
+++ b/apps/web/src/api/conversations.ts
@@ -33,3 +33,21 @@ export async function listProjectConversations(
       ),
     );
 }
+
+export async function renameConversation(
+  id: string,
+  title: string,
+): Promise<ConversationResponse> {
+  return conversationSchema.parse(
+    await request(`/api/conversations/${encodeURIComponent(id)}`, {
+      method: "PATCH",
+      body: JSON.stringify({ title }),
+    }),
+  );
+}
+
+export async function deleteConversation(id: string): Promise<void> {
+  await request(`/api/conversations/${encodeURIComponent(id)}`, {
+    method: "DELETE",
+  });
+}
diff --git a/apps/web/src/api/settings.ts b/apps/web/src/api/settings.ts
new file mode 100644
index 0000000..2c9c6c9
--- /dev/null
+++ b/apps/web/src/api/settings.ts
@@ -0,0 +1,21 @@
+import {
+  settingsSchema,
+  type SettingsResponse,
+} from "@great-agent/web-contracts";
+import { request } from "./request";
+
+export async function getSettings(): Promise<SettingsResponse> {
+  return settingsSchema.parse(await request("/api/settings"));
+}
+
+export async function updateSettings(input: {
+  defaultWorkspaceRoot: string;
+  showToolDetails: boolean;
+}): Promise<SettingsResponse> {
+  return settingsSchema.parse(
+    await request("/api/settings", {
+      method: "PATCH",
+      body: JSON.stringify(input),
+    }),
+  );
+}
diff --git a/apps/web/src/app/app-controller-types.ts b/apps/web/src/app/app-controller-types.ts
index 784c31d..d53176f 100644
--- a/apps/web/src/app/app-controller-types.ts
+++ b/apps/web/src/app/app-controller-types.ts
@@ -6,6 +6,7 @@ import type {
   InteractionAnswerRequest,
   InteractionResponse,
   ProjectResponse,
+  SettingsResponse,
 } from "@great-agent/web-contracts";
 
 export type Selection =
@@ -15,6 +16,9 @@ export type Selection =
   | { kind: "project-draft"; projectId: string }
   | { kind: "project-rename"; projectId: string }
   | { kind: "project-delete"; projectId: string }
+  | { kind: "conversation-rename"; conversationId: string }
+  | { kind: "conversation-delete"; conversationId: string }
+  | { kind: "settings" }
   | { kind: "conversation"; id: string };
 
 export type AppController = Readonly<{
@@ -31,6 +35,7 @@ export type AppController = Readonly<{
   assistantDraft: State<string>;
   error: State<string>;
   toolActivities: State<ToolActivity[]>;
+  settings: State<SettingsResponse | null>;
   initialize(): Promise<void>;
   startNewTask(): void;
   startProjectCreation(): void;
@@ -42,6 +47,15 @@ export type AppController = Readonly<{
   startProjectDelete(id: string): void;
   deleteProject(id: string): Promise<void>;
   openConversation(id: string): Promise<void>;
+  startConversationRename(id: string): void;
+  renameConversation(id: string, title: string): Promise<void>;
+  startConversationDelete(id: string): void;
+  deleteConversation(id: string): Promise<void>;
+  openSettings(): Promise<void>;
+  saveSettings(
+    defaultWorkspaceRoot: string,
+    showToolDetails: boolean,
+  ): Promise<void>;
   send(content: string, attachments?: readonly string[]): Promise<boolean>;
   answerInteraction(
     id: string,
diff --git a/apps/web/src/app/app-controller.ts b/apps/web/src/app/app-controller.ts
index 82f8b0c..30f91b5 100644
--- a/apps/web/src/app/app-controller.ts
+++ b/apps/web/src/app/app-controller.ts
@@ -6,6 +6,7 @@ import type {
   InteractionResponse,
   AgentRunResponse,
   ProjectResponse,
+  SettingsResponse,
 } from "@great-agent/web-contracts";
 import {
   getConversation,
@@ -35,6 +36,8 @@ import type {
   ToolActivity,
 } from "./app-controller-types";
 import { collectRunEvent } from "./controller-run-events";
+import { createManagementActions } from "./controller-management";
+import { getSettings } from "../api/settings";
 export type { AppController, Selection } from "./app-controller-types";
 
 export function createAppController(): AppController {
@@ -53,15 +56,17 @@ export function createAppController(): AppController {
   const assistantDraft = van.state("");
   const error = van.state("");
   const toolActivities = van.state<ToolActivity[]>([]);
+  const settings = van.state<SettingsResponse | null>(null);
 
   async function initialize() {
     loading.val = true;
     error.val = "";
     toolActivities.val = [];
     try {
-      [recent.val, projects.val] = await Promise.all([
+      [recent.val, projects.val, settings.val] = await Promise.all([
         listConversations(),
         listProjects(),
+        getSettings(),
       ]);
     } catch (cause) {
       error.val = readMessage(cause);
@@ -326,6 +331,16 @@ export function createAppController(): AppController {
     }
   }
 
+  const management = createManagementActions({
+    recent,
+    projectConversations,
+    active,
+    settings,
+    selection,
+    select,
+    perform,
+  });
+
   return {
     selection,
     recent,
@@ -340,6 +355,7 @@ export function createAppController(): AppController {
     assistantDraft,
     error,
     toolActivities,
+    settings,
     initialize,
     startNewTask,
     startProjectCreation,
@@ -351,6 +367,7 @@ export function createAppController(): AppController {
     startProjectDelete,
     deleteProject: deleteExistingProject,
     openConversation,
+    ...management,
     send,
     answerInteraction,
     cancelInteraction,
diff --git a/apps/web/src/app/controller-management.ts b/apps/web/src/app/controller-management.ts
new file mode 100644
index 0000000..764d883
--- /dev/null
+++ b/apps/web/src/app/controller-management.ts
@@ -0,0 +1,110 @@
+import type { State } from "vanjs-core";
+import type {
+  ConversationResponse,
+  ConversationSummaryResponse,
+  SettingsResponse,
+} from "@great-agent/web-contracts";
+import { deleteConversation, renameConversation } from "../api/conversations";
+import { getSettings, updateSettings } from "../api/settings";
+import type { Selection } from "./app-controller-types";
+
+type Dependencies = Readonly<{
+  recent: State<ConversationSummaryResponse[]>;
+  projectConversations: State<Record<string, ConversationSummaryResponse[]>>;
+  active: State<ConversationResponse | null>;
+  settings: State<SettingsResponse | null>;
+  selection: State<Selection>;
+  select(selection: Selection): void;
+  perform(action: () => Promise<void>): Promise<void>;
+}>;
+
+export function createManagementActions(dependencies: Dependencies) {
+  function startConversationRename(id: string) {
+    dependencies.selection.val = {
+      kind: "conversation-rename",
+      conversationId: id,
+    };
+  }
+
+  function startConversationDelete(id: string) {
+    dependencies.selection.val = {
+      kind: "conversation-delete",
+      conversationId: id,
+    };
+  }
+
+  async function renameExistingConversation(id: string, title: string) {
+    await dependencies.perform(async () => {
+      const updated = await renameConversation(id, title);
+      const summary = toSummary(updated);
+      dependencies.recent.val = dependencies.recent.val.map((item) =>
+        item.id === id ? summary : item,
+      );
+      dependencies.projectConversations.val = Object.fromEntries(
+        Object.entries(dependencies.projectConversations.val).map(
+          ([projectId, conversations]) => [
+            projectId,
+            conversations.map((item) => (item.id === id ? summary : item)),
+          ],
+        ),
+      );
+      dependencies.active.val = updated;
+      dependencies.select({ kind: "conversation", id });
+      dependencies.active.val = updated;
+    });
+  }
+
+  async function deleteExistingConversation(id: string) {
+    await dependencies.perform(async () => {
+      await deleteConversation(id);
+      dependencies.recent.val = dependencies.recent.val.filter(
+        (item) => item.id !== id,
+      );
+      dependencies.projectConversations.val = Object.fromEntries(
+        Object.entries(dependencies.projectConversations.val).map(
+          ([projectId, conversations]) => [
+            projectId,
+            conversations.filter((item) => item.id !== id),
+          ],
+        ),
+      );
+      dependencies.select({ kind: "none" });
+    });
+  }
+
+  async function openSettings() {
+    await dependencies.perform(async () => {
+      dependencies.settings.val = await getSettings();
+      dependencies.select({ kind: "settings" });
+    });
+  }
+
+  async function saveSettings(
+    defaultWorkspaceRoot: string,
+    showToolDetails: boolean,
+  ) {
+    await dependencies.perform(async () => {
+      dependencies.settings.val = await updateSettings({
+        defaultWorkspaceRoot,
+        showToolDetails,
+      });
+      dependencies.select({ kind: "settings" });
+    });
+  }
+
+  return {
+    startConversationRename,
+    renameConversation: renameExistingConversation,
+    startConversationDelete,
+    deleteConversation: deleteExistingConversation,
+    openSettings,
+    saveSettings,
+  };
+}
+
+function toSummary(
+  conversation: ConversationResponse,
+): ConversationSummaryResponse {
+  const { messages: _messages, ...summary } = conversation;
+  return summary;
+}
diff --git a/apps/web/src/features/conversations/conversation-management-panel.css b/apps/web/src/features/conversations/conversation-management-panel.css
new file mode 100644
index 0000000..ce6b805
--- /dev/null
+++ b/apps/web/src/features/conversations/conversation-management-panel.css
@@ -0,0 +1,66 @@
+.conversation-management {
+  width: min(520px, calc(100% - 48px));
+  margin: 0 auto;
+  padding-top: 90px;
+}
+.management-icon {
+  display: grid;
+  width: 38px;
+  height: 38px;
+  place-items: center;
+  border-radius: 10px;
+  color: #d7a08f;
+  background: #3d302c;
+}
+.management-icon.danger {
+  color: #e2a398;
+  background: #4b2d29;
+}
+.conversation-management h1 {
+  margin: 18px 0 8px;
+  font: 600 22px var(--font-serif);
+}
+.conversation-management p {
+  color: #928e87;
+  font-size: 11px;
+  line-height: 1.6;
+}
+.conversation-management label {
+  display: grid;
+  gap: 7px;
+  margin-top: 24px;
+  color: #aaa69f;
+  font-size: 10px;
+}
+.conversation-management input,
+.conversation-name {
+  padding: 10px 12px;
+  border: 1px solid #494641;
+  border-radius: 8px;
+  color: #e3dfd8;
+  background: #292826;
+}
+.conversation-name {
+  margin-top: 20px;
+  font-size: 12px;
+}
+.management-actions {
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
+  margin-top: 20px;
+}
+.management-actions button {
+  padding: 8px 14px;
+  border-radius: 7px;
+  color: #bbb6af;
+  background: #363431;
+}
+.management-actions .primary {
+  color: #fff;
+  background: #a95e4d;
+}
+.management-actions .danger-button {
+  color: #fff;
+  background: #974f44;
+}
diff --git a/apps/web/src/features/conversations/conversation-management-panel.ts b/apps/web/src/features/conversations/conversation-management-panel.ts
new file mode 100644
index 0000000..9128cbd
--- /dev/null
+++ b/apps/web/src/features/conversations/conversation-management-panel.ts
@@ -0,0 +1,74 @@
+import van from "vanjs-core";
+import type { AppController } from "../../app/app-controller";
+import "./conversation-management-panel.css";
+
+const { button, div, form, h1, input, label, p, span } = van.tags;
+
+export function ConversationManagementPanel(
+  controller: AppController,
+): HTMLElement {
+  const conversation = controller.active.val;
+  const selection = controller.selection.val;
+  if (!conversation || !("conversationId" in selection))
+    return div({ class: "conversation-management" }, p("会话不存在"));
+  if (selection.kind === "conversation-delete")
+    return div(
+      { class: "conversation-management" },
+      span({ class: "management-icon danger" }, "×"),
+      h1("删除会话？"),
+      p("将删除该会话的消息、附件元数据和运行记录。此操作不会修改工作区文件。"),
+      div({ class: "conversation-name" }, conversation.title),
+      div(
+        { class: "management-actions" },
+        button(
+          { onclick: () => void controller.openConversation(conversation.id) },
+          "取消",
+        ),
+        button(
+          {
+            class: "danger-button",
+            onclick: () => void controller.deleteConversation(conversation.id),
+          },
+          "确认删除",
+        ),
+      ),
+    );
+  const title = van.state(conversation.title);
+  return form(
+    {
+      class: "conversation-management",
+      onsubmit: (event: Event) => {
+        event.preventDefault();
+        void controller.renameConversation(conversation.id, title.val);
+      },
+    },
+    span({ class: "management-icon" }, "✎"),
+    h1("重命名会话"),
+    p("修改侧栏中显示的会话名称。"),
+    label(
+      "会话名称",
+      input({
+        value: title,
+        maxlength: 80,
+        autofocus: true,
+        oninput: (event: Event) => {
+          title.val = (event.target as HTMLInputElement).value;
+        },
+      }),
+    ),
+    div(
+      { class: "management-actions" },
+      button(
+        {
+          type: "button",
+          onclick: () => void controller.openConversation(conversation.id),
+        },
+        "取消",
+      ),
+      button(
+        { class: "primary", type: "submit", disabled: () => !title.val.trim() },
+        "保存",
+      ),
+    ),
+  );
+}
diff --git a/apps/web/src/features/conversations/conversation-pane.ts b/apps/web/src/features/conversations/conversation-pane.ts
index a259dbe..d467668 100644
--- a/apps/web/src/features/conversations/conversation-pane.ts
+++ b/apps/web/src/features/conversations/conversation-pane.ts
@@ -5,6 +5,8 @@ import { ProjectPanel } from "../projects/project-panel";
 import { InteractionCard } from "../interactions/interaction-card";
 import { RunStatus } from "../runs/run-status";
 import { FilePicker } from "../files/file-picker";
+import { ConversationManagementPanel } from "./conversation-management-panel";
+import { SettingsPanel } from "../settings/settings-panel";
 
 const { article, button, div, h1, header, main, p, span, textarea } = van.tags;
 
@@ -31,87 +33,100 @@ export function ConversationPane(controller: AppController): HTMLElement {
     div({ class: "pane-content" }, () =>
       controller.selection.val.kind.startsWith("project-")
         ? ProjectPanel(controller)
-        : controller.selection.val.kind === "conversation" &&
-            controller.active.val
-          ? div(
-              { class: "conversation-view" },
-              h1({ class: "conversation-title" }, controller.active.val.title),
-              div(
-                { class: "message-list" },
-                controller.active.val.messages.map((message) =>
+        : controller.selection.val.kind.startsWith("conversation-")
+          ? ConversationManagementPanel(controller)
+          : controller.selection.val.kind === "settings"
+            ? SettingsPanel(controller)
+            : controller.selection.val.kind === "conversation" &&
+                controller.active.val
+              ? div(
+                  { class: "conversation-view" },
+                  h1(
+                    { class: "conversation-title" },
+                    controller.active.val.title,
+                  ),
                   div(
-                    { class: "timeline-entry" },
-                    article(
-                      { class: `message ${message.role}` },
-                      span(
-                        { class: `message-role ${message.role}-role` },
-                        message.role === "user" ? "你" : "G",
+                    { class: "message-list" },
+                    controller.active.val.messages.map((message) =>
+                      div(
+                        { class: "timeline-entry" },
+                        article(
+                          { class: `message ${message.role}` },
+                          span(
+                            { class: `message-role ${message.role}-role` },
+                            message.role === "user" ? "你" : "G",
+                          ),
+                          message.content ? p(message.content) : div(),
+                          message.attachments.length
+                            ? div(
+                                { class: "message-attachments" },
+                                message.attachments.map((attachment) =>
+                                  span(
+                                    {
+                                      class: `attachment-chip ${attachment.status}`,
+                                      title:
+                                        attachment.reason ?? attachment.path,
+                                    },
+                                    "▤ ",
+                                    attachment.name,
+                                    attachment.status === "unavailable"
+                                      ? " · 不可用"
+                                      : attachment.status === "unsupported"
+                                        ? " · 不支持读取"
+                                        : "",
+                                  ),
+                                ),
+                              )
+                            : null,
+                        ),
+                        controller.interactions.val
+                          .filter(
+                            (interaction) =>
+                              interaction.messageId === message.id,
+                          )
+                          .map((interaction) =>
+                            InteractionCard(controller, interaction),
+                          ),
                       ),
-                      message.content ? p(message.content) : div(),
-                      message.attachments.length
-                        ? div(
-                            { class: "message-attachments" },
-                            message.attachments.map((attachment) =>
-                              span(
-                                {
-                                  class: `attachment-chip ${attachment.status}`,
-                                  title: attachment.reason ?? attachment.path,
-                                },
-                                "▤ ",
-                                attachment.name,
-                                attachment.status === "unavailable"
-                                  ? " · 不可用"
-                                  : attachment.status === "unsupported"
-                                    ? " · 不支持读取"
-                                    : "",
-                              ),
-                            ),
+                    ),
+                    () =>
+                      controller.assistantDraft.val
+                        ? article(
+                            { class: "message assistant streaming" },
+                            span({ class: "message-role assistant-role" }, "G"),
+                            p(controller.assistantDraft),
                           )
                         : null,
-                    ),
-                    controller.interactions.val
-                      .filter(
-                        (interaction) => interaction.messageId === message.id,
-                      )
-                      .map((interaction) =>
-                        InteractionCard(controller, interaction),
-                      ),
-                  ),
-                ),
-                () =>
-                  controller.assistantDraft.val
-                    ? article(
-                        { class: "message assistant streaming" },
-                        span({ class: "message-role assistant-role" }, "G"),
-                        p(controller.assistantDraft),
-                      )
-                    : null,
-                () =>
-                  div(
-                    { class: "tool-activities" },
-                    ...controller.toolActivities.val.map((tool) =>
+                    () =>
                       div(
-                        { class: `tool-activity ${tool.status}` },
-                        span(
-                          tool.status === "running"
-                            ? "◌"
-                            : tool.status === "completed"
-                              ? "✓"
-                              : "!",
+                        {
+                          class: "tool-activities",
+                          hidden: () =>
+                            controller.settings.val?.showToolDetails === false,
+                        },
+                        ...controller.toolActivities.val.map((tool) =>
+                          div(
+                            { class: `tool-activity ${tool.status}` },
+                            span(
+                              tool.status === "running"
+                                ? "◌"
+                                : tool.status === "completed"
+                                  ? "✓"
+                                  : "!",
+                            ),
+                            span(toolName(tool.name)),
+                            span(tool.detail),
+                          ),
                         ),
-                        span(toolName(tool.name)),
-                        span(tool.detail),
                       ),
-                    ),
                   ),
-              ),
-              () => RunStatus(controller),
-            )
-          : div(
-              { class: "onboarding" },
-              h1(span({ class: "spark" }, "✳"), " 今天想完成什么？"),
-              p("从一个问题、想法或具体任务开始。"),
-            ),
+                  () => RunStatus(controller),
+                )
+              : div(
+                  { class: "onboarding" },
+                  h1(span({ class: "spark" }, "✳"), " 今天想完成什么？"),
+                  p("从一个问题、想法或具体任务开始。"),
+                ),
     ),
     div(
       { class: "composer-slot", hidden: () => !canCompose(controller) },
diff --git a/apps/web/src/features/conversations/sidebar.css b/apps/web/src/features/conversations/sidebar.css
index 3b31676..f56f4f1 100644
--- a/apps/web/src/features/conversations/sidebar.css
+++ b/apps/web/src/features/conversations/sidebar.css
@@ -64,7 +64,7 @@
   background: #1c1c1b;
 }
 .new-task:hover,
-.recent-list button:hover,
+.conversation-open:hover,
 .project-open:hover {
   background: #323230;
 }
@@ -111,7 +111,7 @@
   color: #96928c;
   background: transparent;
 }
-.project-conversations button {
+.project-conversations .conversation-open {
   overflow: hidden;
   width: 100%;
   padding: 5px 8px 5px 27px;
@@ -157,7 +157,14 @@
   padding: 0;
   list-style: none;
 }
-.recent-list button {
+.conversation-item {
+  position: relative;
+  border-radius: 5px;
+}
+.conversation-item.selected {
+  background: #323230;
+}
+.recent-list .conversation-open {
   overflow: hidden;
   width: 100%;
   padding: 6px 10px 6px 20px;
@@ -169,7 +176,7 @@
   white-space: nowrap;
   font-size: 11px;
 }
-.recent-list button::before {
+.recent-list .conversation-open::before {
   content: "○";
   margin-left: -13px;
   margin-right: 6px;
@@ -185,6 +192,12 @@
   border-top: 1px solid #302f2e;
   color: #c8c5bf;
   font-size: 11px;
+  width: 100%;
+  background: transparent;
+  text-align: left;
+}
+.sidebar-footer:hover {
+  background: #302f2d;
 }
 .sidebar-footer div {
   display: grid;
@@ -204,6 +217,20 @@
   background: #ce7c64;
   font-weight: 700;
 }
+.conversation-actions {
+  position: absolute;
+  top: 2px;
+  right: 3px;
+  display: flex;
+  background: #323230;
+}
+.conversation-actions button {
+  width: 23px;
+  height: 23px;
+  padding: 0;
+  color: #99958e;
+  background: transparent;
+}
 
 @media (max-width: 700px) {
   .sidebar {
diff --git a/apps/web/src/features/conversations/sidebar.ts b/apps/web/src/features/conversations/sidebar.ts
index 203a4ec..817e484 100644
--- a/apps/web/src/features/conversations/sidebar.ts
+++ b/apps/web/src/features/conversations/sidebar.ts
@@ -44,17 +44,15 @@ export function Sidebar(controller: AppController): HTMLElement {
             : ul(
                 { class: "recent-list" },
                 controller.recent.val.map((item) =>
-                  li(
-                    button(
-                      { onclick: () => controller.openConversation(item.id) },
-                      item.title,
-                    ),
-                  ),
+                  ConversationItem(controller, item.id),
                 ),
               ),
     ),
-    div(
-      { class: "sidebar-footer" },
+    button(
+      {
+        class: "sidebar-footer",
+        onclick: () => void controller.openSettings(),
+      },
       span({ class: "avatar" }, "G"),
       div("Great Agent 2", span("本地个人助手")),
     ),
@@ -116,15 +114,7 @@ function ProjectItem(
             { class: "project-conversations" },
             (controller.projectConversations.val[project.id] ?? []).map(
               (conversation) =>
-                li(
-                  button(
-                    {
-                      onclick: () =>
-                        controller.openConversation(conversation.id),
-                    },
-                    conversation.title,
-                  ),
-                ),
+                ConversationItem(controller, conversation.id, true),
             ),
           )
         : null,
@@ -132,6 +122,59 @@ function ProjectItem(
   });
 }
 
+function ConversationItem(
+  controller: AppController,
+  conversationId: string,
+  nested = false,
+): HTMLElement {
+  const conversation = [
+    ...controller.recent.val,
+    ...Object.values(controller.projectConversations.val).flat(),
+  ].find((item) => item.id === conversationId);
+  if (!conversation) return li();
+  const selected = selectedConversationId(controller) === conversation.id;
+  return li(
+    {
+      class: `conversation-item${selected ? " selected" : ""}${nested ? " nested" : ""}`,
+    },
+    button(
+      {
+        class: "conversation-open",
+        onclick: () => controller.openConversation(conversation.id),
+      },
+      conversation.title,
+    ),
+    selected
+      ? div(
+          { class: "conversation-actions" },
+          button(
+            {
+              title: "重命名会话",
+              onclick: () =>
+                controller.startConversationRename(conversation.id),
+            },
+            "✎",
+          ),
+          button(
+            {
+              title: "删除会话",
+              onclick: () =>
+                controller.startConversationDelete(conversation.id),
+            },
+            "×",
+          ),
+        )
+      : null,
+  );
+}
+
+function selectedConversationId(controller: AppController): string | null {
+  const selection = controller.selection.val;
+  if (selection.kind === "conversation") return selection.id;
+  if ("conversationId" in selection) return selection.conversationId;
+  return null;
+}
+
 function selectedProjectId(controller: AppController): string | null {
   const selection = controller.selection.val;
   if ("projectId" in selection) return selection.projectId;
diff --git a/apps/web/src/features/settings/settings-panel.css b/apps/web/src/features/settings/settings-panel.css
new file mode 100644
index 0000000..4c4121a
--- /dev/null
+++ b/apps/web/src/features/settings/settings-panel.css
@@ -0,0 +1,71 @@
+.settings-panel {
+  width: min(560px, calc(100% - 48px));
+  margin: 0 auto;
+  padding-top: 70px;
+}
+.settings-icon {
+  display: grid;
+  width: 42px;
+  height: 42px;
+  place-items: center;
+  border-radius: 50%;
+  color: #211f1d;
+  background: #ce7c64;
+  font-weight: 700;
+}
+.settings-panel h1 {
+  margin: 18px 0 7px;
+  font: 600 23px var(--font-serif);
+}
+.settings-panel > p {
+  color: #8f8b84;
+  font-size: 11px;
+}
+.settings-panel > label:not(.checkbox-setting) {
+  display: grid;
+  gap: 7px;
+  margin-top: 24px;
+  color: #aaa69f;
+  font-size: 10px;
+}
+.settings-panel input[type="text"],
+.settings-panel input:not([type]) {
+  padding: 10px 12px;
+  border: 1px solid #494641;
+  border-radius: 8px;
+  color: #e3dfd8;
+  background: #292826;
+}
+.checkbox-setting {
+  display: flex;
+  gap: 9px;
+  align-items: center;
+  margin-top: 17px;
+  color: #bbb6af;
+  font-size: 11px;
+}
+.settings-summary {
+  margin-top: 25px;
+  padding: 12px;
+  border: 1px solid #403e3a;
+  border-radius: 9px;
+  background: #292826;
+}
+.settings-summary p {
+  display: flex;
+  justify-content: space-between;
+  margin: 5px 0;
+  color: #8f8b84;
+  font-size: 10px;
+}
+.settings-summary span {
+  color: #cbc6bf;
+}
+.settings-save {
+  float: right;
+  margin-top: 18px;
+  padding: 8px 14px;
+  border-radius: 7px;
+  color: #fff;
+  background: #a95e4d;
+}
diff --git a/apps/web/src/features/settings/settings-panel.ts b/apps/web/src/features/settings/settings-panel.ts
new file mode 100644
index 0000000..5052e48
--- /dev/null
+++ b/apps/web/src/features/settings/settings-panel.ts
@@ -0,0 +1,58 @@
+import van from "vanjs-core";
+import type { AppController } from "../../app/app-controller";
+import "./settings-panel.css";
+
+const { button, div, form, h1, input, label, p, span } = van.tags;
+
+export function SettingsPanel(controller: AppController): HTMLElement {
+  const current = controller.settings.val;
+  if (!current) return div({ class: "settings-panel" }, p("正在加载设置…"));
+  const root = van.state(current.defaultWorkspaceRoot);
+  const showTools = van.state(current.showToolDetails);
+  return form(
+    {
+      class: "settings-panel",
+      onsubmit: (event: Event) => {
+        event.preventDefault();
+        void controller.saveSettings(root.val, showTools.val);
+      },
+    },
+    span({ class: "settings-icon" }, "G"),
+    h1("个人设置"),
+    p("这些设置只保存在当前实例的本地数据目录中。"),
+    label(
+      "普通对话默认工作区",
+      input({
+        value: root,
+        oninput: (event: Event) => {
+          root.val = (event.target as HTMLInputElement).value;
+        },
+      }),
+    ),
+    label(
+      { class: "checkbox-setting" },
+      input({
+        type: "checkbox",
+        checked: showTools,
+        onchange: (event: Event) => {
+          showTools.val = (event.target as HTMLInputElement).checked;
+        },
+      }),
+      span("显示文件工具执行详情"),
+    ),
+    div(
+      { class: "settings-summary" },
+      p("模型", span(current.model)),
+      p("模型状态", span(current.modelConfigured ? "已配置" : "未配置")),
+      p("应用版本", span(current.version)),
+    ),
+    button(
+      {
+        class: "settings-save",
+        type: "submit",
+        disabled: () => !root.val.trim(),
+      },
+      "保存设置",
+    ),
+  );
+}
diff --git a/docs/FEATURES.md b/docs/FEATURES.md
index 9156b25..bea669e 100644
--- a/docs/FEATURES.md
+++ b/docs/FEATURES.md
@@ -99,13 +99,17 @@
 
 ### F-008——会话管理与个人设置
 
-- 状态：进行中
+- 状态：已完成（Agent 于 2026-08-14 验证通过，等待最终统一人工审核）
 - 用户可见结果：重命名和删除会话，查看并修改非敏感设置。
 - 主要验收：AC-003、AC-018。
+- 会话管理：普通会话和项目会话在选中后提供重命名与删除入口；重命名立即更新会话文件、侧栏和当前标题。删除前展示会话名称，并明确说明删除消息、附件元数据和运行记录但不修改工作区文件；有活动任务时拒绝删除，成功后普通或项目会话列表同步移除。
+- 个人设置：侧栏底部进入设置页，可查看和修改普通对话默认工作区及文件工具详情偏好；新工作区经服务端 `realpath` 和读写目录校验后保存到独立 `settings.json`，后续普通对话即时使用新目录。页面只显示 DeepSeek 模型名、是否已配置和应用版本，不返回或渲染模型密钥。
+- 自动化验证结果：2026-08-14 通过全仓类型检查、35 项测试和 121 个断言、生产构建、代码检查、格式检查、文件规模检查与架构依赖检查；覆盖会话重命名/删除接口、设置持久化、工作区规范化以及响应中不存在密钥字段。
+- 人工操作结果：2026-08-14 使用隔离数据目录和本机应用内浏览器完成；验证创建失败终态会话后重命名、刷新恢复名称、删除确认与列表清空；将默认工作区修改为 `/tmp` 并关闭工具详情后刷新，页面恢复规范化路径 `/private/tmp` 和关闭状态；隔离页面控制台无错误。
 
 ### F-009——Claude Desktop 视觉与交互收口
 
-- 状态：待开始
+- 状态：进行中
 - 用户可见结果：全部已支持状态在目标视口下贴近确认后的参考界面。
 - 主要验收：AC-001、AC-002、AC-012、AC-013、AC-020、AC-024。
 
diff --git a/packages/agent-core/src/domain/settings.ts b/packages/agent-core/src/domain/settings.ts
new file mode 100644
index 0000000..0624196
--- /dev/null
+++ b/packages/agent-core/src/domain/settings.ts
@@ -0,0 +1,12 @@
+export type PersonalSettings = Readonly<{
+  defaultWorkspaceRoot: string;
+  showToolDetails: boolean;
+  updatedAt: string;
+}>;
+
+export type SettingsView = PersonalSettings &
+  Readonly<{
+    model: string;
+    modelConfigured: boolean;
+    version: string;
+  }>;
diff --git a/packages/agent-core/src/index.ts b/packages/agent-core/src/index.ts
index b8b0851..2972fbc 100644
--- a/packages/agent-core/src/index.ts
+++ b/packages/agent-core/src/index.ts
@@ -9,6 +9,7 @@ export type {
 } from "./domain/conversation";
 export type { AgentRun, AgentRunStatus, RunEvent } from "./domain/agent-run";
 export type { Project, ProjectView } from "./domain/project";
+export type { PersonalSettings, SettingsView } from "./domain/settings";
 export type {
   InteractionAnswer,
   InteractionKind,
@@ -26,6 +27,7 @@ export type {
 export type { RunRepository } from "./ports/run-repository";
 export type { ProjectRepository } from "./ports/project-repository";
 export type { InteractionRepository } from "./ports/interaction-repository";
+export type { SettingsRepository } from "./ports/settings-repository";
 export type {
   ClockPort,
   IdPort,
@@ -58,3 +60,7 @@ export {
   InteractionService,
   type InteractionServiceDependencies,
 } from "./use-cases/interaction-service";
+export {
+  SettingsService,
+  type SettingsServiceDependencies,
+} from "./use-cases/settings-service";
diff --git a/packages/agent-core/src/ports/conversation-repository.ts b/packages/agent-core/src/ports/conversation-repository.ts
index f497e43..add5451 100644
--- a/packages/agent-core/src/ports/conversation-repository.ts
+++ b/packages/agent-core/src/ports/conversation-repository.ts
@@ -13,5 +13,7 @@ export interface ConversationRepository {
     conversationId: string,
     message: Message,
   ): Promise<Conversation>;
+  update(conversation: Conversation): Promise<void>;
+  delete(id: string): Promise<void>;
   deleteByProject(projectId: string): Promise<void>;
 }
diff --git a/packages/agent-core/src/ports/settings-repository.ts b/packages/agent-core/src/ports/settings-repository.ts
new file mode 100644
index 0000000..e2c3616
--- /dev/null
+++ b/packages/agent-core/src/ports/settings-repository.ts
@@ -0,0 +1,6 @@
+import type { PersonalSettings } from "../domain/settings";
+
+export interface SettingsRepository {
+  get(): Promise<PersonalSettings | null>;
+  save(settings: PersonalSettings): Promise<void>;
+}
diff --git a/packages/agent-core/src/use-cases/agent-run-service.test.ts b/packages/agent-core/src/use-cases/agent-run-service.test.ts
index ed96463..f6ad0be 100644
--- a/packages/agent-core/src/use-cases/agent-run-service.test.ts
+++ b/packages/agent-core/src/use-cases/agent-run-service.test.ts
@@ -41,6 +41,12 @@ class MemoryConversationRepository implements ConversationRepository {
   async create(value: Conversation) {
     this.values.set(value.id, value);
   }
+  async update(value: Conversation) {
+    this.values.set(value.id, value);
+  }
+  async delete(id: string) {
+    this.values.delete(id);
+  }
   async appendMessage(id: string, message: Conversation["messages"][number]) {
     const current = this.values.get(id);
     if (!current) throw new Error("not found");
diff --git a/packages/agent-core/src/use-cases/conversation-service.test.ts b/packages/agent-core/src/use-cases/conversation-service.test.ts
index 01cf412..1cac476 100644
--- a/packages/agent-core/src/use-cases/conversation-service.test.ts
+++ b/packages/agent-core/src/use-cases/conversation-service.test.ts
@@ -23,6 +23,12 @@ class MemoryConversationRepository implements ConversationRepository {
   async create(conversation: Conversation): Promise<void> {
     this.values.set(conversation.id, conversation);
   }
+  async update(conversation: Conversation): Promise<void> {
+    this.values.set(conversation.id, conversation);
+  }
+  async delete(id: string): Promise<void> {
+    this.values.delete(id);
+  }
   async appendMessage(
     id: string,
     message: Conversation["messages"][number],
@@ -91,4 +97,20 @@ describe("ConversationService", () => {
     expect(created.messages[0]?.content).toBe("");
     expect(created.messages[0]?.attachments[0]?.path).toBe("docs/说明.md");
   });
+
+  test("重命名和删除会话立即更新仓库", async () => {
+    const conversations = new MemoryConversationRepository();
+    let id = 0;
+    const service = new ConversationService({
+      conversations,
+      clock: { now: () => new Date("2026-08-14T08:00:00Z") },
+      ids: { create: () => `manage_${++id}` },
+    });
+    const created = await service.createWithFirstMessage("原名称", "run_1");
+    expect((await service.rename(created.id, "  新名称  ")).title).toBe(
+      "新名称",
+    );
+    await service.delete(created.id);
+    expect(await conversations.getById(created.id)).toBeNull();
+  });
 });
diff --git a/packages/agent-core/src/use-cases/conversation-service.ts b/packages/agent-core/src/use-cases/conversation-service.ts
index abcb47f..c880542 100644
--- a/packages/agent-core/src/use-cases/conversation-service.ts
+++ b/packages/agent-core/src/use-cases/conversation-service.ts
@@ -6,11 +6,13 @@ import type {
 import { CoreError } from "../errors/core-error";
 import type { ConversationRepository } from "../ports/conversation-repository";
 import type { ClockPort, IdPort } from "../ports/system-ports";
+import type { RunRepository } from "../ports/run-repository";
 
 export type ConversationServiceDependencies = Readonly<{
   conversations: ConversationRepository;
   clock: ClockPort;
   ids: IdPort;
+  runs?: RunRepository;
 }>;
 
 export class ConversationService {
@@ -31,6 +33,36 @@ export class ConversationService {
     return conversation;
   }
 
+  async rename(id: string, title: string): Promise<Conversation> {
+    const conversation = await this.getConversation(id);
+    const normalized = title.trim();
+    if (!normalized)
+      throw new CoreError("CONVERSATION_TITLE_EMPTY", "请输入会话名称");
+    if (normalized.length > 80)
+      throw new CoreError("CONVERSATION_TITLE_TOO_LONG", "会话名称过长");
+    const updated = {
+      ...conversation,
+      title: normalized,
+      updatedAt: this.dependencies.clock.now().toISOString(),
+    };
+    await this.dependencies.conversations.update(updated);
+    return updated;
+  }
+
+  async delete(id: string): Promise<void> {
+    await this.getConversation(id);
+    if (
+      this.dependencies.runs &&
+      (await this.dependencies.runs.hasActiveForConversations([id]))
+    )
+      throw new CoreError(
+        "CONVERSATION_RUN_ACTIVE",
+        "会话中仍有任务正在运行，请先停止任务",
+      );
+    await this.dependencies.runs?.deleteByConversations([id]);
+    await this.dependencies.conversations.delete(id);
+  }
+
   async createWithFirstMessage(
     content: string,
     runId: string,
diff --git a/packages/agent-core/src/use-cases/interaction-run.test.ts b/packages/agent-core/src/use-cases/interaction-run.test.ts
index 9b190a2..c887d88 100644
--- a/packages/agent-core/src/use-cases/interaction-run.test.ts
+++ b/packages/agent-core/src/use-cases/interaction-run.test.ts
@@ -28,6 +28,12 @@ class Conversations implements ConversationRepository {
   async create(value: Conversation) {
     this.values.set(value.id, value);
   }
+  async update(value: Conversation) {
+    this.values.set(value.id, value);
+  }
+  async delete(id: string) {
+    this.values.delete(id);
+  }
   async appendMessage(id: string, message: Conversation["messages"][number]) {
     const current = this.values.get(id);
     if (!current) throw new Error("not found");
diff --git a/packages/agent-core/src/use-cases/project-service.test.ts b/packages/agent-core/src/use-cases/project-service.test.ts
index 8d5d104..6a0b315 100644
--- a/packages/agent-core/src/use-cases/project-service.test.ts
+++ b/packages/agent-core/src/use-cases/project-service.test.ts
@@ -44,6 +44,12 @@ class Conversations implements ConversationRepository {
   async create(value: Conversation) {
     this.values.set(value.id, value);
   }
+  async update(value: Conversation) {
+    this.values.set(value.id, value);
+  }
+  async delete(id: string) {
+    this.values.delete(id);
+  }
   async appendMessage(
     _id: string,
     _message: Conversation["messages"][number],
diff --git a/packages/agent-core/src/use-cases/settings-service.test.ts b/packages/agent-core/src/use-cases/settings-service.test.ts
new file mode 100644
index 0000000..89a30f0
--- /dev/null
+++ b/packages/agent-core/src/use-cases/settings-service.test.ts
@@ -0,0 +1,48 @@
+import { describe, expect, test } from "bun:test";
+import type { PersonalSettings, SettingsRepository } from "..";
+import { SettingsService } from "..";
+
+class MemorySettings implements SettingsRepository {
+  value: PersonalSettings | null = null;
+  async get() {
+    return this.value;
+  }
+  async save(value: PersonalSettings) {
+    this.value = value;
+  }
+}
+
+describe("SettingsService", () => {
+  test("只返回模型配置摘要并持久化有效默认工作区", async () => {
+    const repository = new MemorySettings();
+    const service = new SettingsService({
+      settings: repository,
+      workspaces: {
+        async resolveForCreation(path) {
+          return `/real${path}`;
+        },
+        async isAvailable() {
+          return true;
+        },
+      },
+      clock: { now: () => new Date("2026-08-14T08:00:00Z") },
+      initialWorkspaceRoot: "/default",
+      model: "deepseek-v4-pro",
+      modelConfigured: true,
+      version: "0.1.0",
+    });
+    const initial = await service.get();
+    expect(initial).toMatchObject({
+      defaultWorkspaceRoot: "/default",
+      model: "deepseek-v4-pro",
+      modelConfigured: true,
+    });
+    const updated = await service.update({
+      defaultWorkspaceRoot: "/chosen",
+      showToolDetails: false,
+    });
+    expect(updated.defaultWorkspaceRoot).toBe("/real/chosen");
+    expect(updated.showToolDetails).toBe(false);
+    expect(Object.keys(updated)).not.toContain("apiKey");
+  });
+});
diff --git a/packages/agent-core/src/use-cases/settings-service.ts b/packages/agent-core/src/use-cases/settings-service.ts
new file mode 100644
index 0000000..563e803
--- /dev/null
+++ b/packages/agent-core/src/use-cases/settings-service.ts
@@ -0,0 +1,58 @@
+import type { PersonalSettings, SettingsView } from "../domain/settings";
+import type { SettingsRepository } from "../ports/settings-repository";
+import type { ClockPort, WorkspaceResolverPort } from "../ports/system-ports";
+
+export type SettingsServiceDependencies = Readonly<{
+  settings: SettingsRepository;
+  workspaces: WorkspaceResolverPort;
+  clock: ClockPort;
+  initialWorkspaceRoot: string;
+  model: string;
+  modelConfigured: boolean;
+  version: string;
+}>;
+
+export class SettingsService {
+  constructor(private readonly dependencies: SettingsServiceDependencies) {}
+
+  async get(): Promise<SettingsView> {
+    const settings = await this.getPersonal();
+    return {
+      ...settings,
+      model: this.dependencies.model,
+      modelConfigured: this.dependencies.modelConfigured,
+      version: this.dependencies.version,
+    };
+  }
+
+  async getDefaultWorkspaceRoot(): Promise<string> {
+    return (await this.getPersonal()).defaultWorkspaceRoot;
+  }
+
+  async update(input: {
+    defaultWorkspaceRoot: string;
+    showToolDetails: boolean;
+  }): Promise<SettingsView> {
+    const defaultWorkspaceRoot =
+      await this.dependencies.workspaces.resolveForCreation(
+        input.defaultWorkspaceRoot,
+      );
+    const settings: PersonalSettings = {
+      defaultWorkspaceRoot,
+      showToolDetails: input.showToolDetails,
+      updatedAt: this.dependencies.clock.now().toISOString(),
+    };
+    await this.dependencies.settings.save(settings);
+    return this.get();
+  }
+
+  private async getPersonal(): Promise<PersonalSettings> {
+    const stored = await this.dependencies.settings.get();
+    if (stored) return stored;
+    return {
+      defaultWorkspaceRoot: this.dependencies.initialWorkspaceRoot,
+      showToolDetails: true,
+      updatedAt: this.dependencies.clock.now().toISOString(),
+    };
+  }
+}
diff --git a/packages/agent-core/src/use-cases/workspace-service.ts b/packages/agent-core/src/use-cases/workspace-service.ts
index 0b78d51..18b1cb4 100644
--- a/packages/agent-core/src/use-cases/workspace-service.ts
+++ b/packages/agent-core/src/use-cases/workspace-service.ts
@@ -15,7 +15,7 @@ export class WorkspaceService {
     private readonly files: WorkspacePort,
     private readonly conversations: ConversationService,
     private readonly projects: ProjectService,
-    private readonly defaultRoot: string,
+    private readonly defaultRoot: string | (() => Promise<string>),
     private readonly clock: ClockPort,
   ) {}
 
@@ -149,9 +149,13 @@ export class WorkspaceService {
   }
 
   private async requireDefaultRoot(): Promise<string> {
+    const root =
+      typeof this.defaultRoot === "string"
+        ? this.defaultRoot
+        : await this.defaultRoot();
     try {
-      await this.files.list(this.defaultRoot);
-      return this.defaultRoot;
+      await this.files.list(root);
+      return root;
     } catch {
       throw new CoreError(
         "DEFAULT_WORKSPACE_UNAVAILABLE",
diff --git a/packages/local-data/src/index.ts b/packages/local-data/src/index.ts
index 3e1cb78..6ebd0fb 100644
--- a/packages/local-data/src/index.ts
+++ b/packages/local-data/src/index.ts
@@ -10,3 +10,4 @@ export { FileConversationRepository } from "./repositories/file-conversation-rep
 export { FileRunRepository } from "./repositories/file-run-repository";
 export { FileProjectRepository } from "./repositories/file-project-repository";
 export { FileInteractionRepository } from "./repositories/file-interaction-repository";
+export { FileSettingsRepository } from "./repositories/file-settings-repository";
diff --git a/packages/local-data/src/repositories/file-conversation-repository.ts b/packages/local-data/src/repositories/file-conversation-repository.ts
index 14f7f24..41e4050 100644
--- a/packages/local-data/src/repositories/file-conversation-repository.ts
+++ b/packages/local-data/src/repositories/file-conversation-repository.ts
@@ -62,6 +62,19 @@ export class FileConversationRepository implements ConversationRepository {
     return next;
   }
 
+  async update(conversation: Conversation): Promise<void> {
+    if (!(await this.getById(conversation.id))) throw new Error("会话不存在");
+    await writeJsonAtomically(this.pathFor(conversation.id), conversation);
+  }
+
+  async delete(id: string): Promise<void> {
+    try {
+      await unlink(this.pathFor(id));
+    } catch (cause) {
+      if (!isFileNotFound(cause)) throw cause;
+    }
+  }
+
   async deleteByProject(projectId: string): Promise<void> {
     const conversations = await this.readAll();
     await Promise.all(
diff --git a/packages/local-data/src/repositories/file-settings-repository.test.ts b/packages/local-data/src/repositories/file-settings-repository.test.ts
new file mode 100644
index 0000000..0cdad49
--- /dev/null
+++ b/packages/local-data/src/repositories/file-settings-repository.test.ts
@@ -0,0 +1,28 @@
+import { describe, expect, test } from "bun:test";
+import { mkdtemp, rm } from "node:fs/promises";
+import { join } from "node:path";
+import { tmpdir } from "node:os";
+import { createDataLayout, ensureDataLayout, FileSettingsRepository } from "..";
+
+describe("FileSettingsRepository", () => {
+  test("在独立 settings.json 中保存非敏感配置", async () => {
+    const root = await mkdtemp(join(tmpdir(), "great-agent-settings-"));
+    try {
+      const layout = createDataLayout(root);
+      await ensureDataLayout(layout);
+      const repository = new FileSettingsRepository(layout);
+      expect(await repository.get()).toBeNull();
+      await repository.save({
+        defaultWorkspaceRoot: "/workspace",
+        showToolDetails: true,
+        updatedAt: "2026-08-14T08:00:00Z",
+      });
+      expect(await repository.get()).toMatchObject({
+        defaultWorkspaceRoot: "/workspace",
+        showToolDetails: true,
+      });
+    } finally {
+      await rm(root, { recursive: true });
+    }
+  });
+});
diff --git a/packages/local-data/src/repositories/file-settings-repository.ts b/packages/local-data/src/repositories/file-settings-repository.ts
new file mode 100644
index 0000000..92e7136
--- /dev/null
+++ b/packages/local-data/src/repositories/file-settings-repository.ts
@@ -0,0 +1,30 @@
+import { readFile } from "node:fs/promises";
+import { join } from "node:path";
+import type {
+  PersonalSettings,
+  SettingsRepository,
+} from "@great-agent/agent-core";
+import { writeJsonAtomically } from "../atomic-writes/write-json-atomically";
+import type { DataLayout } from "../layout/data-layout";
+
+export class FileSettingsRepository implements SettingsRepository {
+  constructor(private readonly layout: DataLayout) {}
+
+  async get(): Promise<PersonalSettings | null> {
+    try {
+      return JSON.parse(await readFile(this.path, "utf8")) as PersonalSettings;
+    } catch (cause) {
+      if (cause instanceof Error && "code" in cause && cause.code === "ENOENT")
+        return null;
+      throw cause;
+    }
+  }
+
+  save(settings: PersonalSettings): Promise<void> {
+    return writeJsonAtomically(this.path, settings);
+  }
+
+  private get path(): string {
+    return join(this.layout.root, "settings.json");
+  }
+}
diff --git a/packages/web-contracts/src/index.ts b/packages/web-contracts/src/index.ts
index 7752317..66f48b0 100644
--- a/packages/web-contracts/src/index.ts
+++ b/packages/web-contracts/src/index.ts
@@ -1,6 +1,14 @@
 export { healthResponseSchema, type HealthResponse } from "./responses/health";
 export { messageInputSchema, type MessageInput } from "./requests/message";
 export { startRunRequestSchema, type StartRunRequest } from "./requests/run";
+export {
+  renameConversationRequestSchema,
+  type RenameConversationRequest,
+} from "./requests/conversation";
+export {
+  updateSettingsRequestSchema,
+  type UpdateSettingsRequest,
+} from "./requests/settings";
 export {
   createProjectRequestSchema,
   renameProjectRequestSchema,
@@ -36,3 +44,4 @@ export {
   type WorkspaceEntryResponse,
   type WorkspaceSearchMatchResponse,
 } from "./responses/workspace";
+export { settingsSchema, type SettingsResponse } from "./responses/settings";
diff --git a/packages/web-contracts/src/requests/conversation.ts b/packages/web-contracts/src/requests/conversation.ts
new file mode 100644
index 0000000..a5e4106
--- /dev/null
+++ b/packages/web-contracts/src/requests/conversation.ts
@@ -0,0 +1,9 @@
+import { z } from "zod";
+
+export const renameConversationRequestSchema = z.object({
+  title: z.string().trim().min(1).max(80),
+});
+
+export type RenameConversationRequest = z.infer<
+  typeof renameConversationRequestSchema
+>;
diff --git a/packages/web-contracts/src/requests/settings.ts b/packages/web-contracts/src/requests/settings.ts
new file mode 100644
index 0000000..ce24611
--- /dev/null
+++ b/packages/web-contracts/src/requests/settings.ts
@@ -0,0 +1,8 @@
+import { z } from "zod";
+
+export const updateSettingsRequestSchema = z.object({
+  defaultWorkspaceRoot: z.string().trim().min(1),
+  showToolDetails: z.boolean(),
+});
+
+export type UpdateSettingsRequest = z.infer<typeof updateSettingsRequestSchema>;
diff --git a/packages/web-contracts/src/responses/settings.ts b/packages/web-contracts/src/responses/settings.ts
new file mode 100644
index 0000000..6359d6c
--- /dev/null
+++ b/packages/web-contracts/src/responses/settings.ts
@@ -0,0 +1,12 @@
+import { z } from "zod";
+
+export const settingsSchema = z.object({
+  defaultWorkspaceRoot: z.string(),
+  showToolDetails: z.boolean(),
+  updatedAt: z.string(),
+  model: z.string(),
+  modelConfigured: z.boolean(),
+  version: z.string(),
+});
+
+export type SettingsResponse = z.infer<typeof settingsSchema>;