diff --git a/src/gateway/server-methods.ts b/src/gateway/server-methods.ts
index 66492b976..ef271285b 100644
--- a/src/gateway/server-methods.ts
+++ b/src/gateway/server-methods.ts
@@ -18,6 +18,7 @@ import { sessionsHandlers } from "./server-methods/sessions.js";
 import { skillsHandlers } from "./server-methods/skills.js";
 import { systemHandlers } from "./server-methods/system.js";
 import { talkHandlers } from "./server-methods/talk.js";
+import { tasksHandlers } from "./server-methods/tasks.js";
 import { ttsHandlers } from "./server-methods/tts.js";
 import type { GatewayRequestHandlers, GatewayRequestOptions } from "./server-methods/types.js";
 import { updateHandlers } from "./server-methods/update.js";
@@ -72,6 +73,7 @@ const READ_METHODS = new Set([
   "node.list",
   "node.describe",
   "chat.history",
+  "tasks.get",
 ]);
 const WRITE_METHODS = new Set([
   "send",
@@ -88,6 +90,7 @@ const WRITE_METHODS = new Set([
   "chat.send",
   "chat.abort",
   "browser.request",
+  "tasks.save",
 ]);
 
 function authorizeGatewayMethod(method: string, client: GatewayRequestOptions["client"]) {
@@ -160,6 +163,7 @@ export const coreGatewayHandlers: GatewayRequestHandlers = {
   ...configHandlers,
   ...wizardHandlers,
   ...talkHandlers,
+  ...tasksHandlers,
   ...ttsHandlers,
   ...skillsHandlers,
   ...sessionsHandlers,
diff --git a/src/gateway/server-methods/tasks.ts b/src/gateway/server-methods/tasks.ts
new file mode 100644
index 000000000..f8ba19dfe
--- /dev/null
+++ b/src/gateway/server-methods/tasks.ts
@@ -0,0 +1,320 @@
+import fs from "node:fs/promises";
+import path from "node:path";
+
+import { ErrorCodes, errorShape } from "../protocol/index.js";
+import type { GatewayRequestHandlers } from "./types.js";
+import { loadConfig } from "../../config/io.js";
+
+type TaskColumnId = "todo" | "doing" | "done" | "blocked";
+
+type TaskChecklistItem = {
+  id: string;
+  text: string;
+  done: boolean;
+};
+
+type TaskEntity = {
+  id: string;
+  name: string;
+  description: string;
+  createdAtMs: number;
+  updatedAtMs: number;
+
+  priority?: number;
+  dueAtMs?: number | null;
+  tags?: string[];
+  links?: string[];
+  checklist?: TaskChecklistItem[];
+  blockReason?: string;
+
+  extras?: Record<string, unknown>;
+};
+
+export type TaskBoardV3 = {
+  version: 3;
+  updatedAtMs: number;
+  tasksById: Record<string, TaskEntity>;
+  columns: Record<TaskColumnId, string[]>;
+};
+
+type TaskBoardV2 = {
+  version: 2;
+  updatedAtMs: number;
+  tasksById: Record<string, TaskEntity>;
+  columns: Record<"todo" | "doing" | "done" | "later", string[]>;
+};
+
+type TaskBoardV1 = {
+  version: 1;
+  updatedAtMs: number;
+  columns: Record<
+    "todo" | "doing" | "done" | "later",
+    Array<{ id: string; title: string; createdAtMs: number; updatedAtMs: number }>
+  >;
+};
+
+const DEFAULT_BOARD: TaskBoardV3 = {
+  version: 3,
+  updatedAtMs: 0,
+  tasksById: {},
+  columns: { todo: [], doing: [], done: [], blocked: [] },
+};
+
+function resolveBoardPath(): string {
+  const cfg = loadConfig();
+  const workspace = cfg.agents?.defaults?.workspace;
+  const base = typeof workspace === "string" && workspace.trim() ? workspace.trim() : process.cwd();
+  return path.join(base, "tasks", "board.json");
+}
+
+async function readBoardFile(filePath: string): Promise<TaskBoardV3> {
+  try {
+    const raw = await fs.readFile(filePath, "utf-8");
+    const parsed = JSON.parse(raw) as unknown;
+
+    const v3 = coerceBoardV3(parsed);
+    if (v3) return v3;
+
+    const migrated = migrateToV3(parsed);
+    if (migrated) {
+      await writeBoardFile(filePath, migrated);
+      return migrated;
+    }
+
+    return { ...DEFAULT_BOARD };
+  } catch (err: any) {
+    if (err?.code === "ENOENT") return { ...DEFAULT_BOARD };
+    // If corrupted, return default rather than failing the UI.
+    return { ...DEFAULT_BOARD };
+  }
+}
+
+async function writeBoardFile(filePath: string, board: TaskBoardV3): Promise<void> {
+  await fs.mkdir(path.dirname(filePath), { recursive: true });
+  await fs.writeFile(filePath, JSON.stringify(board, null, 2) + "\n", "utf-8");
+}
+
+function isPlainObject(v: unknown): v is Record<string, unknown> {
+  return Boolean(v) && typeof v === "object" && !Array.isArray(v);
+}
+
+function coerceStringArray(v: unknown): string[] {
+  if (!Array.isArray(v)) return [];
+  return v
+    .filter((x) => typeof x === "string")
+    .map((x) => x.trim())
+    .filter(Boolean)
+    .slice(0, 2000);
+}
+
+function coerceTaskEntity(idHint: string, v: unknown): TaskEntity | null {
+  if (!isPlainObject(v)) return null;
+
+  const id = (typeof v.id === "string" ? v.id : idHint).trim();
+  const name = typeof v.name === "string" ? v.name.trim() : "";
+  const description = typeof v.description === "string" ? v.description : "";
+  const createdAtMs = typeof v.createdAtMs === "number" ? v.createdAtMs : Date.now();
+  const updatedAtMs = typeof v.updatedAtMs === "number" ? v.updatedAtMs : createdAtMs;
+  if (!id || !name) return null;
+
+  const priority = typeof v.priority === "number" ? v.priority : undefined;
+  const dueAtMs = typeof v.dueAtMs === "number" ? v.dueAtMs : v.dueAtMs === null ? null : undefined;
+  const tags = Array.isArray(v.tags)
+    ? v.tags
+        .filter((x) => typeof x === "string")
+        .map((x) => x.trim())
+        .filter(Boolean)
+        .slice(0, 50)
+    : undefined;
+  const links = Array.isArray(v.links)
+    ? v.links
+        .filter((x) => typeof x === "string")
+        .map((x) => x.trim())
+        .filter(Boolean)
+        .slice(0, 200)
+    : undefined;
+
+  const checklist = Array.isArray(v.checklist)
+    ? v.checklist
+        .map((x) => {
+          if (!isPlainObject(x)) return null;
+          const cid = typeof x.id === "string" ? x.id.trim() : "";
+          const text = typeof x.text === "string" ? x.text : "";
+          const done = Boolean(x.done);
+          if (!cid) return null;
+          return { id: cid, text, done } satisfies TaskChecklistItem;
+        })
+        .filter((x): x is TaskChecklistItem => Boolean(x))
+        .slice(0, 500)
+    : undefined;
+
+  const blockReason = typeof v.blockReason === "string" ? v.blockReason : undefined;
+  const extras = isPlainObject(v.extras) ? (v.extras as Record<string, unknown>) : undefined;
+
+  return {
+    id: id.slice(0, 128),
+    name: name.slice(0, 300),
+    description: description.slice(0, 20_000),
+    createdAtMs,
+    updatedAtMs,
+    priority,
+    dueAtMs,
+    tags,
+    links,
+    checklist,
+    blockReason: typeof blockReason === "string" ? blockReason.slice(0, 20_000) : undefined,
+    extras,
+  };
+}
+
+function coerceBoardV3(v: unknown): TaskBoardV3 | null {
+  if (!isPlainObject(v)) return null;
+  if (v.version !== 3) return null;
+  if (!isPlainObject(v.columns) || !isPlainObject(v.tasksById)) return null;
+
+  const columnsRaw = v.columns as Record<string, unknown>;
+  const tasksByIdRaw = v.tasksById as Record<string, unknown>;
+
+  const tasksById: Record<string, TaskEntity> = {};
+  for (const [id, raw] of Object.entries(tasksByIdRaw)) {
+    const coerced = coerceTaskEntity(id, raw);
+    if (coerced) tasksById[coerced.id] = coerced;
+  }
+
+  const columns: Record<TaskColumnId, string[]> = {
+    todo: coerceStringArray(columnsRaw.todo),
+    doing: coerceStringArray(columnsRaw.doing),
+    done: coerceStringArray(columnsRaw.done),
+    blocked: coerceStringArray(columnsRaw.blocked),
+  };
+
+  // Drop ids that don't exist.
+  for (const key of Object.keys(columns) as TaskColumnId[]) {
+    columns[key] = columns[key].filter((id) => Boolean(tasksById[id]));
+  }
+
+  const updatedAtMs = typeof v.updatedAtMs === "number" ? v.updatedAtMs : 0;
+  return { version: 3, updatedAtMs, tasksById, columns };
+}
+
+function migrateV1ToV3(v: unknown): TaskBoardV3 | null {
+  if (!isPlainObject(v)) return null;
+  if (v.version !== 1) return null;
+  if (!isPlainObject(v.columns)) return null;
+
+  const cols = v.columns as Record<string, unknown>;
+  const updatedAtMs = typeof v.updatedAtMs === "number" ? v.updatedAtMs : 0;
+
+  const tasksById: Record<string, TaskEntity> = {};
+  const columns: Record<TaskColumnId, string[]> = {
+    todo: [],
+    doing: [],
+    done: [],
+    blocked: [],
+  };
+
+  for (const key of ["todo", "doing", "done", "later"] as const) {
+    const items = Array.isArray(cols[key]) ? cols[key] : [];
+    for (const item of items) {
+      if (!isPlainObject(item)) continue;
+      const id = typeof item.id === "string" ? item.id.trim() : "";
+      const title = typeof item.title === "string" ? item.title.trim() : "";
+      if (!id || !title) continue;
+      const createdAtMs = typeof item.createdAtMs === "number" ? item.createdAtMs : Date.now();
+      const updatedAt = typeof item.updatedAtMs === "number" ? item.updatedAtMs : createdAtMs;
+      tasksById[id] = {
+        id,
+        name: title,
+        description: "",
+        createdAtMs,
+        updatedAtMs: updatedAt,
+        priority: 3,
+        dueAtMs: null,
+        tags: [],
+        links: [],
+        checklist: [],
+        blockReason: "",
+        extras: {},
+      };
+      const targetColumn: TaskColumnId = key === "later" ? "blocked" : (key satisfies any);
+      columns[targetColumn].push(id);
+    }
+  }
+
+  return { version: 3, updatedAtMs, tasksById, columns };
+}
+
+function migrateV2ToV3(v: unknown): TaskBoardV3 | null {
+  if (!isPlainObject(v)) return null;
+  if (v.version !== 2) return null;
+  if (!isPlainObject(v.columns) || !isPlainObject(v.tasksById)) return null;
+
+  const updatedAtMs = typeof v.updatedAtMs === "number" ? v.updatedAtMs : 0;
+
+  // Reuse entity coercion and just map columns.
+  const tasksByIdRaw = v.tasksById as Record<string, unknown>;
+  const tasksById: Record<string, TaskEntity> = {};
+  for (const [id, raw] of Object.entries(tasksByIdRaw)) {
+    const coerced = coerceTaskEntity(id, raw);
+    if (coerced) {
+      tasksById[coerced.id] = {
+        ...coerced,
+        blockReason: typeof coerced.blockReason === "string" ? coerced.blockReason : "",
+      };
+    }
+  }
+
+  const cols = v.columns as Record<string, unknown>;
+  const todo = coerceStringArray(cols.todo);
+  const doing = coerceStringArray(cols.doing);
+  const done = coerceStringArray(cols.done);
+  const blocked = coerceStringArray(cols.later);
+
+  const columns: Record<TaskColumnId, string[]> = {
+    todo: todo.filter((id) => Boolean(tasksById[id])),
+    doing: doing.filter((id) => Boolean(tasksById[id])),
+    done: done.filter((id) => Boolean(tasksById[id])),
+    blocked: blocked.filter((id) => Boolean(tasksById[id])),
+  };
+
+  return { version: 3, updatedAtMs, tasksById, columns };
+}
+
+function migrateToV3(v: unknown): TaskBoardV3 | null {
+  return migrateV2ToV3(v) ?? migrateV1ToV3(v);
+}
+
+function validateIncomingBoard(
+  v: unknown,
+): { ok: true; board: TaskBoardV3 } | { ok: false; message: string } {
+  const coerced = coerceBoardV3(v);
+  if (!coerced) return { ok: false, message: "board must be a v3 task board" };
+  const ids = Object.keys(coerced.tasksById);
+  if (ids.length > 5000) return { ok: false, message: "too many tasks" };
+  return { ok: true, board: coerced };
+}
+
+export const tasksHandlers: GatewayRequestHandlers = {
+  "tasks.get": async ({ respond }) => {
+    const filePath = resolveBoardPath();
+    const board = await readBoardFile(filePath);
+    respond(true, { board, path: filePath });
+  },
+
+  "tasks.save": async ({ params, respond }) => {
+    const incoming = (params as Record<string, unknown>).board;
+    const validated = validateIncomingBoard(incoming);
+    if (!validated.ok) {
+      respond(false, undefined, errorShape(ErrorCodes.INVALID_REQUEST, validated.message));
+      return;
+    }
+    const filePath = resolveBoardPath();
+    const now = Date.now();
+    const next: TaskBoardV3 = {
+      ...validated.board,
+      updatedAtMs: now,
+    };
+    await writeBoardFile(filePath, next);
+    respond(true, { ok: true, board: next, path: filePath });
+  },
+};
diff --git a/ui/src/styles/chat/sidebar.css b/ui/src/styles/chat/sidebar.css
index 934e285d9..83d915045 100644
--- a/ui/src/styles/chat/sidebar.css
+++ b/ui/src/styles/chat/sidebar.css
@@ -25,93 +25,3 @@
   overflow: hidden;
   animation: slide-in 200ms ease-out;
 }
-
-@keyframes slide-in {
-  from {
-    opacity: 0;
-    transform: translateX(20px);
-  }
-  to {
-    opacity: 1;
-    transform: translateX(0);
-  }
-}
-
-/* Sidebar Panel */
-.sidebar-panel {
-  display: flex;
-  flex-direction: column;
-  height: 100%;
-  background: var(--panel);
-}
-
-.sidebar-header {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  padding: 12px 16px;
-  border-bottom: 1px solid var(--border);
-  flex-shrink: 0;
-  position: sticky;
-  top: 0;
-  z-index: 10;
-  background: var(--panel);
-}
-
-/* Smaller close button for sidebar */
-.sidebar-header .btn {
-  padding: 4px 8px;
-  font-size: 14px;
-  min-width: auto;
-  line-height: 1;
-}
-
-.sidebar-title {
-  font-weight: 600;
-  font-size: 14px;
-}
-
-.sidebar-content {
-  flex: 1;
-  overflow: auto;
-  padding: 16px;
-}
-
-.sidebar-markdown {
-  font-size: 14px;
-  line-height: 1.5;
-}
-
-.sidebar-markdown pre {
-  background: rgba(0, 0, 0, 0.12);
-  border-radius: 4px;
-  padding: 12px;
-  overflow-x: auto;
-}
-
-.sidebar-markdown code {
-  font-family: var(--mono);
-  font-size: 13px;
-}
-
-/* Mobile: Full-screen modal */
-@media (max-width: 768px) {
-  .chat-split-container--open {
-    position: fixed;
-    top: 0;
-    left: 0;
-    right: 0;
-    bottom: 0;
-    z-index: 1000;
-  }
-
-  .chat-split-container--open .chat-main {
-    display: none; /* Hide chat on mobile when sidebar open */
-  }
-
-  .chat-split-container--open .chat-sidebar {
-    width: 100%;
-    min-width: 0;
-    border-left: none;
-  }
-}
diff --git a/ui/src/styles/components.css b/ui/src/styles/components.css
index 27dfe62d1..7963d4d39 100644
--- a/ui/src/styles/components.css
+++ b/ui/src/styles/components.css
@@ -1,4 +1,5 @@
 @import './chat.css';
+@import './taskboard.css';
 
 /* ===========================================
    Cards - Refined with depth
diff --git a/ui/src/styles/taskboard.css b/ui/src/styles/taskboard.css
new file mode 100644
index 000000000..9c48f1a22
--- /dev/null
+++ b/ui/src/styles/taskboard.css
@@ -0,0 +1,198 @@
+/* TaskBoard page */
+
+.taskboard {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+
+.taskboard__header {
+  display: flex;
+  justify-content: space-between;
+  align-items: flex-start;
+  gap: 12px;
+}
+
+.taskboard__title {
+  font-weight: 700;
+  font-size: 18px;
+}
+
+.taskboard__sub {
+  color: var(--muted);
+  font-size: 13px;
+  margin-top: 4px;
+}
+
+.taskboard__path {
+  font-size: 12px;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.taskboard__grid {
+  display: grid;
+  grid-template-columns: repeat(4, minmax(240px, 1fr));
+  gap: 12px;
+  align-items: start;
+}
+
+@media (max-width: 1100px) {
+  .taskboard__grid {
+    grid-template-columns: repeat(2, minmax(240px, 1fr));
+  }
+}
+
+@media (max-width: 680px) {
+  .taskboard__grid {
+    grid-template-columns: 1fr;
+  }
+}
+
+.taskboard-col {
+  border: 1px solid var(--border);
+  border-radius: var(--radius-lg);
+  background: var(--panel);
+  padding: 12px;
+}
+
+.taskboard-col__header {
+  display: flex;
+  justify-content: space-between;
+  align-items: baseline;
+  margin-bottom: 10px;
+}
+
+.taskboard-col__title {
+  font-weight: 600;
+  font-size: 13px;
+}
+
+.taskboard-col__count {
+  font-size: 12px;
+  color: var(--muted);
+}
+
+.taskboard-col__add {
+  display: grid;
+  grid-template-columns: 1fr;
+  gap: 8px;
+  margin-bottom: 10px;
+}
+
+.input {
+  width: 100%;
+  padding: 8px 10px;
+  border-radius: 10px;
+  border: 1px solid var(--border);
+  background: var(--bg);
+  color: var(--text);
+  font-size: 13px;
+}
+
+.textarea {
+  resize: vertical;
+}
+
+.taskboard-col__list {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.task {
+  border: 1px solid var(--border);
+  border-radius: 12px;
+  background: var(--bg);
+  overflow: hidden;
+}
+
+.task__summary {
+  list-style: none;
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 10px;
+  padding: 10px;
+  cursor: pointer;
+}
+
+.task__summary::-webkit-details-marker {
+  display: none;
+}
+
+.task__summary-main {
+  min-width: 0;
+}
+
+.task__name {
+  font-weight: 600;
+  font-size: 13px;
+  margin-bottom: 4px;
+}
+
+.task__desc {
+  font-size: 12px;
+  color: var(--muted);
+  white-space: pre-wrap;
+  display: -webkit-box;
+  -webkit-line-clamp: 3;
+  -webkit-box-orient: vertical;
+  overflow: hidden;
+}
+
+.task__blocked {
+  margin-top: 6px;
+  font-size: 12px;
+  color: #f59e0b;
+  white-space: pre-wrap;
+}
+
+.task__details {
+  border-top: 1px solid var(--border);
+  padding: 10px;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.field {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.field__label {
+  font-size: 12px;
+  color: var(--muted);
+}
+
+.task__row {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 10px;
+}
+
+@media (max-width: 680px) {
+  .task__row {
+    grid-template-columns: 1fr;
+  }
+}
+
+.checklist {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.checklist__item {
+  display: grid;
+  grid-template-columns: 18px 1fr auto;
+  gap: 8px;
+  align-items: center;
+}
+
+.checklist__text {
+  font-size: 13px;
+}
diff --git a/ui/src/ui/app-gateway.ts b/ui/src/ui/app-gateway.ts
index ba1df61e1..65dd7013b 100644
--- a/ui/src/ui/app-gateway.ts
+++ b/ui/src/ui/app-gateway.ts
@@ -139,6 +139,7 @@ export function connectGateway(host: GatewayHost) {
       void loadAgents(host as unknown as MoltbotApp);
       void loadNodes(host as unknown as MoltbotApp, { quiet: true });
       void loadDevices(host as unknown as MoltbotApp, { quiet: true });
+      // TaskBoard loads on-demand when tab is active.
       void refreshActiveTab(host as unknown as Parameters<typeof refreshActiveTab>[0]);
     },
     onClose: ({ code, reason }) => {
diff --git a/ui/src/ui/app-render.ts b/ui/src/ui/app-render.ts
index 422af6863..66997a0fc 100644
--- a/ui/src/ui/app-render.ts
+++ b/ui/src/ui/app-render.ts
@@ -32,6 +32,7 @@ import type {
 import type { ChatQueueItem, CronFormState } from "./ui-types";
 import { refreshChatAvatar } from "./app-chat";
 import { renderChat } from "./views/chat";
+import { renderTaskBoardView } from "./views/taskboard";
 import { renderConfig } from "./views/config";
 import { renderChannels } from "./views/channels";
 import { renderCron } from "./views/cron";
@@ -426,6 +427,23 @@ export function renderApp(state: AppViewState) {
             })
           : nothing}
 
+        ${state.tab === "taskboard"
+          ? renderTaskBoardView({
+              loading: state.taskBoardLoading,
+              saving: state.taskBoardSaving,
+              error: state.taskBoardError,
+              path: state.taskBoardPath,
+              board: state.taskBoard,
+              onRefresh: () => void state.refreshTaskBoard(),
+              onAdd: (column, payload) => state.addTask(column, payload),
+              onDelete: (taskId) => state.deleteTask(taskId),
+              onMove: (taskId, from, to) => state.moveTask(taskId, from, to),
+              onUpdate: (taskId, patch) => state.updateTask(taskId, patch),
+              onUpdateChecklist: (taskId, checklist) =>
+                state.updateTask(taskId, { checklist }),
+            })
+          : nothing}
+
         ${state.tab === "chat"
           ? renderChat({
               sessionKey: state.sessionKey,
diff --git a/ui/src/ui/app-settings.ts b/ui/src/ui/app-settings.ts
index 7e3ab29cf..bbbc65896 100644
--- a/ui/src/ui/app-settings.ts
+++ b/ui/src/ui/app-settings.ts
@@ -14,6 +14,7 @@ import { saveSettings, type UiSettings } from "./storage";
 import { resolveTheme, type ResolvedTheme, type ThemeMode } from "./theme";
 import { startThemeTransition, type ThemeTransitionContext } from "./theme-transition";
 import { scheduleChatScroll, scheduleLogsScroll } from "./app-scroll";
+import { loadTaskBoard } from "./controllers/tasks";
 import { startLogsPolling, stopLogsPolling, startDebugPolling, stopDebugPolling } from "./app-polling";
 import { refreshChat } from "./app-chat";
 import type { MoltbotApp } from "./app";
@@ -148,6 +149,7 @@ export async function refreshActiveTab(host: SettingsHost) {
   if (host.tab === "instances") await loadPresence(host as unknown as MoltbotApp);
   if (host.tab === "sessions") await loadSessions(host as unknown as MoltbotApp);
   if (host.tab === "cron") await loadCron(host);
+  if (host.tab === "taskboard") await loadTaskBoard(host as unknown as MoltbotApp);
   if (host.tab === "skills") await loadSkills(host as unknown as MoltbotApp);
   if (host.tab === "nodes") {
     await loadNodes(host as unknown as MoltbotApp);
diff --git a/ui/src/ui/app-view-state.ts b/ui/src/ui/app-view-state.ts
index f58656bfb..f64cda97a 100644
--- a/ui/src/ui/app-view-state.ts
+++ b/ui/src/ui/app-view-state.ts
@@ -20,6 +20,7 @@ import type {
   StatusSummary,
 } from "./types";
 import type { ChatAttachment, ChatQueueItem, CronFormState } from "./ui-types";
+import type { TaskBoard, TaskColumnId } from "./types/task-board";
 import type { EventLogEntry } from "./app-events";
 import type { SkillMessage } from "./controllers/skills";
 import type {
@@ -57,6 +58,15 @@ export type AppViewState = {
   chatAvatarUrl: string | null;
   chatThinkingLevel: string | null;
   chatQueue: ChatQueueItem[];
+
+  // Task board
+  taskBoardOpen: boolean;
+  taskBoardLoading: boolean;
+  taskBoardSaving: boolean;
+  taskBoardError: string | null;
+  taskBoardPath: string | null;
+  taskBoard: TaskBoard;
+
   nodesLoading: boolean;
   nodes: Array<Record<string, unknown>>;
   devicesLoading: boolean;
@@ -202,6 +212,14 @@ export type AppViewState = {
   handleChatSelectQueueItem: (id: string) => void;
   handleChatDropQueueItem: (id: string) => void;
   handleChatClearQueue: () => void;
+
+  // Task board
+  toggleTaskBoard: () => void;
+  refreshTaskBoard: () => Promise<void>;
+  addTask: (column: TaskColumnId, payload: { name: string; description: string }) => void;
+  updateTask: (taskId: string, patch: unknown) => void;
+  deleteTask: (taskId: string) => void;
+  moveTask: (taskId: string, from: TaskColumnId, to: TaskColumnId) => void;
   handleLogsFilterChange: (next: string) => void;
   handleLogsLevelFilterToggle: (level: LogLevel) => void;
   handleLogsAutoFollowToggle: (next: boolean) => void;
diff --git a/ui/src/ui/app.ts b/ui/src/ui/app.ts
index 50ffcdf76..1aaaeeb8a 100644
--- a/ui/src/ui/app.ts
+++ b/ui/src/ui/app.ts
@@ -78,6 +78,14 @@ import {
 } from "./app-channels";
 import type { NostrProfileFormState } from "./views/channels.nostr-profile-form";
 import { loadAssistantIdentity as loadAssistantIdentityInternal } from "./controllers/assistant-identity";
+import { loadTaskBoard, saveTaskBoard } from "./controllers/tasks";
+import {
+  DEFAULT_TASK_BOARD,
+  type TaskBoard,
+  type TaskColumnId,
+  type TaskEntity,
+} from "./types/task-board";
+import { generateUUID } from "./uuid";
 
 declare global {
   interface Window {
@@ -136,6 +144,16 @@ export class MoltbotApp extends LitElement {
   @state() sidebarError: string | null = null;
   @state() splitRatio = this.settings.splitRatio;
 
+  // Task board
+  @state() taskBoardOpen = true;
+  @state() taskBoardLoading = false;
+  @state() taskBoardSaving = false;
+  @state() taskBoardError: string | null = null;
+  @state() taskBoardPath: string | null = null;
+  @state() taskBoard: TaskBoard = { ...DEFAULT_TASK_BOARD };
+
+  private taskBoardSaveTimer: number | null = null;
+
   @state() nodesLoading = false;
   @state() nodes: Array<Record<string, unknown>> = [];
   @state() devicesLoading = false;
@@ -496,6 +514,118 @@ export class MoltbotApp extends LitElement {
     this.applySettings({ ...this.settings, splitRatio: newRatio });
   }
 
+  // --- Task board (Chat left sidebar) ---
+
+  toggleTaskBoard() {
+    this.taskBoardOpen = !this.taskBoardOpen;
+  }
+
+  private scheduleTaskBoardSave(next: TaskBoard) {
+    if (this.taskBoardSaveTimer != null) {
+      window.clearTimeout(this.taskBoardSaveTimer);
+    }
+    this.taskBoardSaveTimer = window.setTimeout(() => {
+      this.taskBoardSaveTimer = null;
+      void saveTaskBoard(this, next);
+    }, 400);
+  }
+
+  addTask(column: TaskColumnId, payload: { name: string; description: string }) {
+    const name = payload.name.trim();
+    const description = (payload.description ?? "").trim();
+    if (!name) return;
+    const now = Date.now();
+    const id = generateUUID();
+    const entity: TaskEntity = {
+      id,
+      name,
+      description,
+      createdAtMs: now,
+      updatedAtMs: now,
+      priority: 3,
+      dueAtMs: null,
+      tags: [],
+      links: [],
+      checklist: [],
+      blockReason: "",
+      extras: {},
+    };
+    const next: TaskBoard = {
+      ...this.taskBoard,
+      tasksById: { ...this.taskBoard.tasksById, [id]: entity },
+      columns: {
+        ...this.taskBoard.columns,
+        [column]: [id, ...(this.taskBoard.columns[column] ?? [])],
+      },
+    };
+    this.taskBoard = next;
+    this.scheduleTaskBoardSave(next);
+  }
+
+  updateTask(taskId: string, patch: Partial<TaskEntity>) {
+    const existing = this.taskBoard.tasksById[taskId];
+    if (!existing) return;
+    const now = Date.now();
+    const nextTask: TaskEntity = {
+      ...existing,
+      ...patch,
+      updatedAtMs: now,
+    };
+    const next: TaskBoard = {
+      ...this.taskBoard,
+      tasksById: { ...this.taskBoard.tasksById, [taskId]: nextTask },
+    };
+    this.taskBoard = next;
+    this.scheduleTaskBoardSave(next);
+  }
+
+  deleteTask(taskId: string) {
+    if (!this.taskBoard.tasksById[taskId]) return;
+    const nextTasksById = { ...this.taskBoard.tasksById };
+    delete nextTasksById[taskId];
+    const nextColumns = {
+      todo: (this.taskBoard.columns.todo ?? []).filter((id) => id !== taskId),
+      doing: (this.taskBoard.columns.doing ?? []).filter((id) => id !== taskId),
+      done: (this.taskBoard.columns.done ?? []).filter((id) => id !== taskId),
+      blocked: (this.taskBoard.columns.blocked ?? []).filter((id) => id !== taskId),
+    };
+    const next: TaskBoard = {
+      ...this.taskBoard,
+      tasksById: nextTasksById,
+      columns: nextColumns,
+    };
+    this.taskBoard = next;
+    this.scheduleTaskBoardSave(next);
+  }
+
+  moveTask(taskId: string, from: TaskColumnId, to: TaskColumnId) {
+    if (from === to) return;
+    if (!this.taskBoard.tasksById[taskId]) return;
+    const fromList = this.taskBoard.columns[from] ?? [];
+    const toList = this.taskBoard.columns[to] ?? [];
+    if (!fromList.includes(taskId)) return;
+    const now = Date.now();
+    const nextTasksById = {
+      ...this.taskBoard.tasksById,
+      [taskId]: { ...this.taskBoard.tasksById[taskId], updatedAtMs: now },
+    };
+    const next: TaskBoard = {
+      ...this.taskBoard,
+      tasksById: nextTasksById,
+      columns: {
+        ...this.taskBoard.columns,
+        [from]: fromList.filter((id) => id !== taskId),
+        [to]: [taskId, ...toList],
+      },
+    };
+    this.taskBoard = next;
+    this.scheduleTaskBoardSave(next);
+  }
+
+  async refreshTaskBoard() {
+    await loadTaskBoard(this);
+  }
+
   render() {
     return renderApp(this);
   }
diff --git a/ui/src/ui/controllers/tasks.ts b/ui/src/ui/controllers/tasks.ts
new file mode 100644
index 000000000..fec13c2e8
--- /dev/null
+++ b/ui/src/ui/controllers/tasks.ts
@@ -0,0 +1,52 @@
+import type { MoltbotApp } from "../app";
+import { DEFAULT_TASK_BOARD, type TaskBoard } from "../types/task-board";
+
+export async function loadTaskBoard(host: MoltbotApp) {
+  if (!host.client || !host.connected) return;
+  host.taskBoardLoading = true;
+  host.taskBoardError = null;
+  try {
+    const res = (await host.client.request("tasks.get")) as {
+      board?: unknown;
+      path?: unknown;
+    };
+    const board = isTaskBoard(res.board) ? res.board : DEFAULT_TASK_BOARD;
+    host.taskBoard = board;
+    host.taskBoardPath = typeof res.path === "string" ? res.path : null;
+  } catch (err: any) {
+    host.taskBoardError = String(err?.message ?? err);
+  } finally {
+    host.taskBoardLoading = false;
+  }
+}
+
+export async function saveTaskBoard(host: MoltbotApp, board: TaskBoard) {
+  if (!host.client || !host.connected) return;
+  host.taskBoardSaving = true;
+  host.taskBoardError = null;
+  try {
+    const res = (await host.client.request("tasks.save", { board })) as {
+      board?: unknown;
+      path?: unknown;
+    };
+    const next = isTaskBoard(res.board) ? res.board : board;
+    host.taskBoard = next;
+    host.taskBoardPath = typeof res.path === "string" ? res.path : host.taskBoardPath;
+  } catch (err: any) {
+    host.taskBoardError = String(err?.message ?? err);
+  } finally {
+    host.taskBoardSaving = false;
+  }
+}
+
+function isPlainObject(v: unknown): v is Record<string, unknown> {
+  return Boolean(v) && typeof v === "object" && !Array.isArray(v);
+}
+
+function isTaskBoard(v: unknown): v is TaskBoard {
+  if (!isPlainObject(v)) return false;
+  if (v.version !== 3) return false;
+  if (!isPlainObject(v.columns)) return false;
+  if (!isPlainObject(v.tasksById)) return false;
+  return true;
+}
diff --git a/ui/src/ui/navigation.ts b/ui/src/ui/navigation.ts
index 966abec96..02bfab522 100644
--- a/ui/src/ui/navigation.ts
+++ b/ui/src/ui/navigation.ts
@@ -4,7 +4,7 @@ export const TAB_GROUPS = [
   { label: "Chat", tabs: ["chat"] },
   {
     label: "Control",
-    tabs: ["overview", "channels", "instances", "sessions", "cron"],
+    tabs: ["overview", "channels", "instances", "sessions", "cron", "taskboard"],
   },
   { label: "Agent", tabs: ["skills", "nodes"] },
   { label: "Settings", tabs: ["config", "debug", "logs"] },
@@ -16,6 +16,7 @@ export type Tab =
   | "instances"
   | "sessions"
   | "cron"
+  | "taskboard"
   | "skills"
   | "nodes"
   | "chat"
@@ -29,6 +30,7 @@ const TAB_PATHS: Record<Tab, string> = {
   instances: "/instances",
   sessions: "/sessions",
   cron: "/cron",
+  taskboard: "/taskboard",
   skills: "/skills",
   nodes: "/nodes",
   chat: "/chat",
@@ -114,6 +116,8 @@ export function iconForTab(tab: Tab): IconName {
       return "fileText";
     case "cron":
       return "loader";
+    case "taskboard":
+      return "folder";
     case "skills":
       return "zap";
     case "nodes":
@@ -141,6 +145,8 @@ export function titleForTab(tab: Tab) {
       return "Sessions";
     case "cron":
       return "Cron Jobs";
+    case "taskboard":
+      return "TaskBoard";
     case "skills":
       return "Skills";
     case "nodes":
@@ -170,6 +176,8 @@ export function subtitleForTab(tab: Tab) {
       return "Inspect active sessions and adjust per-session defaults.";
     case "cron":
       return "Schedule wakeups and recurring agent runs.";
+    case "taskboard":
+      return "Local persistent task board (extensible).";
     case "skills":
       return "Manage skill availability and API key injection.";
     case "nodes":
diff --git a/ui/src/ui/types/task-board.ts b/ui/src/ui/types/task-board.ts
new file mode 100644
index 000000000..72d497489
--- /dev/null
+++ b/ui/src/ui/types/task-board.ts
@@ -0,0 +1,44 @@
+export type TaskColumnId = "todo" | "doing" | "done" | "blocked";
+
+export type TaskChecklistItem = {
+  id: string;
+  text: string;
+  done: boolean;
+};
+
+export type TaskEntity = {
+  id: string;
+  name: string;
+  description: string;
+  createdAtMs: number;
+  updatedAtMs: number;
+
+  // Optional/expandable fields
+  priority?: number; // 1-5
+  dueAtMs?: number | null;
+  tags?: string[];
+  links?: string[];
+  checklist?: TaskChecklistItem[];
+  // When a task is blocked, record why.
+  blockReason?: string;
+  extras?: Record<string, unknown>;
+};
+
+export type TaskBoard = {
+  version: 3;
+  updatedAtMs: number;
+  tasksById: Record<string, TaskEntity>;
+  columns: Record<TaskColumnId, string[]>; // arrays of task ids
+};
+
+export const DEFAULT_TASK_BOARD: TaskBoard = {
+  version: 3,
+  updatedAtMs: 0,
+  tasksById: {},
+  columns: {
+    todo: [],
+    doing: [],
+    done: [],
+    blocked: [],
+  },
+};
diff --git a/ui/src/ui/views/taskboard.ts b/ui/src/ui/views/taskboard.ts
new file mode 100644
index 000000000..e7332e440
--- /dev/null
+++ b/ui/src/ui/views/taskboard.ts
@@ -0,0 +1,343 @@
+import { html, nothing } from "lit";
+
+import type { TaskBoard, TaskColumnId, TaskEntity, TaskChecklistItem } from "../types/task-board";
+import { icons } from "../icons";
+
+export type TaskBoardViewProps = {
+  loading: boolean;
+  saving: boolean;
+  error: string | null;
+  path: string | null;
+  board: TaskBoard;
+
+  onRefresh: () => void;
+  onAdd: (column: TaskColumnId, payload: { name: string; description: string }) => void;
+  onDelete: (taskId: string) => void;
+  onMove: (taskId: string, from: TaskColumnId, to: TaskColumnId) => void;
+  onUpdate: (taskId: string, patch: Partial<TaskEntity>) => void;
+  onUpdateChecklist: (taskId: string, checklist: TaskChecklistItem[]) => void;
+};
+
+export function renderTaskBoardView(props: TaskBoardViewProps) {
+  const columns: Array<{ id: TaskColumnId; title: string }> = [
+    { id: "todo", title: "未完成" },
+    { id: "doing", title: "进行中" },
+    { id: "done", title: "已完成" },
+    { id: "blocked", title: "Blocked" },
+  ];
+
+  const onDropColumn = (e: DragEvent, to: TaskColumnId) => {
+    e.preventDefault();
+    const raw = e.dataTransfer?.getData("application/json") ?? "";
+    try {
+      const parsed = JSON.parse(raw) as { taskId?: unknown; from?: unknown };
+      const taskId = typeof parsed.taskId === "string" ? parsed.taskId : "";
+      const from = typeof parsed.from === "string" ? (parsed.from as TaskColumnId) : null;
+      if (!taskId || !from) return;
+      props.onMove(taskId, from, to);
+    } catch {
+      return;
+    }
+  };
+
+  return html`
+    <div class="taskboard">
+      <div class="taskboard__header">
+        <div>
+          <div class="taskboard__title">TaskBoard</div>
+          <div class="taskboard__sub">本地存储 · 可扩展任务看板</div>
+        </div>
+        <div class="taskboard__actions">
+          <button class="btn" type="button" @click=${props.onRefresh} title="Refresh">
+            ↻
+          </button>
+        </div>
+      </div>
+
+      ${props.error
+        ? html`<div class="callout danger">${props.error}</div>`
+        : nothing}
+      ${props.loading ? html`<div class="muted">Loading…</div>` : nothing}
+      ${props.saving ? html`<div class="muted">Saving…</div>` : nothing}
+      ${props.path ? html`<div class="muted taskboard__path">${props.path}</div>` : nothing}
+
+      <div class="taskboard__grid">
+        ${columns.map((col) => {
+          const ids = props.board.columns[col.id] ?? [];
+          const tasks = ids
+            .map((id) => props.board.tasksById[id])
+            .filter(Boolean) as TaskEntity[];
+          return html`
+            <div
+              class="taskboard-col"
+              @dragover=${(e: DragEvent) => e.preventDefault()}
+              @drop=${(e: DragEvent) => onDropColumn(e, col.id)}
+            >
+              <div class="taskboard-col__header">
+                <div class="taskboard-col__title">${col.title}</div>
+                <div class="taskboard-col__count">${tasks.length}</div>
+              </div>
+
+              <form
+                class="taskboard-col__add"
+                @submit=${(e: Event) => {
+                  e.preventDefault();
+                  const form = e.currentTarget as HTMLFormElement;
+                  const nameInput = form.querySelector(
+                    "input[name=task-name]",
+                  ) as HTMLInputElement | null;
+                  const descInput = form.querySelector(
+                    "textarea[name=task-desc]",
+                  ) as HTMLTextAreaElement | null;
+                  const name = nameInput?.value ?? "";
+                  const description = descInput?.value ?? "";
+                  if (!name.trim()) return;
+                  props.onAdd(col.id, { name, description });
+                  if (nameInput) nameInput.value = "";
+                  if (descInput) descInput.value = "";
+                }}
+              >
+                <input
+                  class="input"
+                  name="task-name"
+                  type="text"
+                  placeholder="任务名称"
+                />
+                <textarea
+                  class="input textarea"
+                  name="task-desc"
+                  placeholder="描述（可选）"
+                  rows="2"
+                ></textarea>
+                <button class="btn primary" type="submit">新增</button>
+              </form>
+
+              <div class="taskboard-col__list">
+                ${tasks.map((t) => renderTaskItem(props, t, col.id))}
+              </div>
+            </div>
+          `;
+        })}
+      </div>
+    </div>
+  `;
+}
+
+function renderTaskItem(
+  props: TaskBoardViewProps,
+  task: TaskEntity,
+  column: TaskColumnId,
+) {
+  const tags = Array.isArray(task.tags) ? task.tags.join(", ") : "";
+  const links = Array.isArray(task.links) ? task.links.join("\n") : "";
+  const checklist = Array.isArray(task.checklist) ? task.checklist : [];
+  const due = typeof task.dueAtMs === "number" ? new Date(task.dueAtMs).toISOString().slice(0, 10) : "";
+  const blockReason = (task.blockReason ?? "").trim();
+
+  return html`
+    <details class="task" @toggle=${(e: Event) => {
+      // No-op: allows click-to-expand without extra state.
+      void e;
+    }}>
+      <summary
+        class="task__summary"
+        draggable="true"
+        @dragstart=${(e: DragEvent) => {
+          e.dataTransfer?.setData(
+            "application/json",
+            JSON.stringify({ taskId: task.id, from: column }),
+          );
+          e.dataTransfer!.effectAllowed = "move";
+        }}
+      >
+        <div class="task__summary-main">
+          <div class="task__name">${task.name}</div>
+          ${task.description
+            ? html`<div class="task__desc">${task.description}</div>`
+            : nothing}
+          ${column === "blocked" && blockReason
+            ? html`<div class="task__blocked">Blocked: ${blockReason}</div>`
+            : nothing}
+        </div>
+        <div class="task__summary-actions">
+          <button
+            class="btn"
+            type="button"
+            title="Delete"
+            @click=${(e: Event) => {
+              e.preventDefault();
+              e.stopPropagation();
+              props.onDelete(task.id);
+            }}
+          >
+            ${icons.x}
+          </button>
+        </div>
+      </summary>
+
+      <div class="task__details">
+        <label class="field">
+          <div class="field__label">名称</div>
+          <input
+            class="input"
+            type="text"
+            .value=${task.name}
+            @change=${(e: Event) =>
+              props.onUpdate(task.id, { name: (e.target as HTMLInputElement).value })}
+          />
+        </label>
+
+        <label class="field">
+          <div class="field__label">描述</div>
+          <textarea
+            class="input textarea"
+            rows="4"
+            .value=${task.description ?? ""}
+            @change=${(e: Event) =>
+              props.onUpdate(task.id, {
+                description: (e.target as HTMLTextAreaElement).value,
+              })}
+          ></textarea>
+        </label>
+
+        <div class="task__row">
+          <label class="field">
+            <div class="field__label">优先级 (1-5)</div>
+            <input
+              class="input"
+              type="number"
+              min="1"
+              max="5"
+              .value=${String(task.priority ?? "")}
+              @change=${(e: Event) => {
+                const v = Number((e.target as HTMLInputElement).value);
+                props.onUpdate(task.id, { priority: Number.isFinite(v) ? v : undefined });
+              }}
+            />
+          </label>
+          <label class="field">
+            <div class="field__label">截止日期</div>
+            <input
+              class="input"
+              type="date"
+              .value=${due}
+              @change=${(e: Event) => {
+                const v = (e.target as HTMLInputElement).value;
+                const ms = v ? new Date(v + "T00:00:00Z").getTime() : null;
+                props.onUpdate(task.id, { dueAtMs: ms });
+              }}
+            />
+          </label>
+        </div>
+
+        <label class="field">
+          <div class="field__label">标签 (逗号分隔)</div>
+          <input
+            class="input"
+            type="text"
+            .value=${tags}
+            @change=${(e: Event) => {
+              const raw = (e.target as HTMLInputElement).value;
+              const arr = raw
+                .split(",")
+                .map((s) => s.trim())
+                .filter(Boolean);
+              props.onUpdate(task.id, { tags: arr });
+            }}
+          />
+        </label>
+
+        <label class="field">
+          <div class="field__label">Links (每行一个)</div>
+          <textarea
+            class="input textarea"
+            rows="3"
+            .value=${links}
+            @change=${(e: Event) => {
+              const raw = (e.target as HTMLTextAreaElement).value;
+              const arr = raw
+                .split("\n")
+                .map((s) => s.trim())
+                .filter(Boolean);
+              props.onUpdate(task.id, { links: arr });
+            }}
+          ></textarea>
+        </label>
+
+        <label class="field">
+          <div class="field__label">Blocked 原因</div>
+          <textarea
+            class="input textarea"
+            rows="3"
+            .value=${blockReason}
+            @change=${(e: Event) =>
+              props.onUpdate(task.id, {
+                blockReason: (e.target as HTMLTextAreaElement).value,
+              })}
+          ></textarea>
+        </label>
+
+        <div class="field">
+          <div class="field__label">Checklist</div>
+          <div class="checklist">
+            ${checklist.map(
+              (c) => html`
+                <label class="checklist__item">
+                  <input
+                    type="checkbox"
+                    .checked=${c.done}
+                    @change=${(e: Event) => {
+                      const done = (e.target as HTMLInputElement).checked;
+                      const next = checklist.map((x) =>
+                        x.id === c.id ? { ...x, done } : x,
+                      );
+                      props.onUpdateChecklist(task.id, next);
+                    }}
+                  />
+                  <input
+                    class="input checklist__text"
+                    type="text"
+                    .value=${c.text}
+                    @change=${(e: Event) => {
+                      const text = (e.target as HTMLInputElement).value;
+                      const next = checklist.map((x) =>
+                        x.id === c.id ? { ...x, text } : x,
+                      );
+                      props.onUpdateChecklist(task.id, next);
+                    }}
+                  />
+                  <button
+                    class="btn"
+                    type="button"
+                    title="Remove"
+                    @click=${() => {
+                      const next = checklist.filter((x) => x.id !== c.id);
+                      props.onUpdateChecklist(task.id, next);
+                    }}
+                  >
+                    ${icons.x}
+                  </button>
+                </label>
+              `,
+            )}
+
+            <button
+              class="btn"
+              type="button"
+              @click=${() => {
+                const id = crypto.randomUUID();
+                const next: TaskChecklistItem[] = [
+                  ...checklist,
+                  { id, text: "", done: false },
+                ];
+                props.onUpdateChecklist(task.id, next);
+              }}
+            >
+              + Add item
+            </button>
+          </div>
+        </div>
+      </div>
+    </details>
+  `;
+}