diff --git a/android-app/app/src/main/java/site/hyzq/bossandroid/model/Models.kt b/android-app/app/src/main/java/site/hyzq/bossandroid/model/Models.kt
index f73489d..b8ae1ef 100644
--- a/android-app/app/src/main/java/site/hyzq/bossandroid/model/Models.kt
+++ b/android-app/app/src/main/java/site/hyzq/bossandroid/model/Models.kt
@@ -10,6 +10,7 @@ data class AppStatePayload(
   val tasks: List<TaskItem> = emptyList(),
   val workers: List<WorkerNode> = emptyList(),
   val deviceBindings: List<DeviceBinding> = emptyList(),
+  val deviceProjects: List<DeviceProject> = emptyList(),
   val approvals: List<ApprovalRequest> = emptyList(),
   val events: List<BossEvent> = emptyList(),
 )
@@ -123,6 +124,23 @@ data class DeviceBinding(
   val updatedAt: String,
 )
 
+@Serializable
+data class DeviceProject(
+  val id: String,
+  val workerId: String,
+  val source: String,
+  val workspaceRoot: String,
+  val workspaceLabel: String,
+  val projectName: String,
+  val status: String,
+  val primaryThreadId: String? = null,
+  val primaryThreadTitle: String = "",
+  val recentThreadTitles: List<String> = emptyList(),
+  val recentThreadCount: Int = 0,
+  val pinnedThreadIds: List<String> = emptyList(),
+  val updatedAt: String,
+)
+
 @Serializable
 data class DeviceBindingLaunchPayload(
   val binding: DeviceBinding,
diff --git a/android-app/app/src/main/java/site/hyzq/bossandroid/ui/BossApp.kt b/android-app/app/src/main/java/site/hyzq/bossandroid/ui/BossApp.kt
index ba4e8ec..ca71f3e 100644
--- a/android-app/app/src/main/java/site/hyzq/bossandroid/ui/BossApp.kt
+++ b/android-app/app/src/main/java/site/hyzq/bossandroid/ui/BossApp.kt
@@ -74,6 +74,7 @@ import java.time.format.DateTimeFormatter
 import site.hyzq.bossandroid.model.ApprovalRequest
 import site.hyzq.bossandroid.model.BossEvent
 import site.hyzq.bossandroid.model.DeviceBinding
+import site.hyzq.bossandroid.model.DeviceProject
 import site.hyzq.bossandroid.model.Message
 import site.hyzq.bossandroid.model.Session
 import site.hyzq.bossandroid.model.TaskItem
@@ -576,6 +577,7 @@ private fun OverviewTab(
   onSelectSession: (String) -> Unit,
   onSelectWorker: (String?) -> Unit,
 ) {
+  val selectedWorker = uiState.workers.firstOrNull { it.id == uiState.selectedWorkerId }
   val messagesBySession = remember(uiState.messages) {
     uiState.messages.groupBy { it.sessionId }
   }
@@ -585,11 +587,44 @@ private fun OverviewTab(
   val workerById = remember(uiState.workers) {
     uiState.workers.associateBy { it.id }
   }
-  val activeTasks = remember(uiState.tasks) {
-    uiState.tasks.filter { it.status in listOf("planning", "queued", "assigned", "running", "blocked", "paused", "waiting_approval") }
+  val selectedWorkerSessionIds = remember(uiState.selectedWorkerId, uiState.sessions, uiState.tasks) {
+    if (uiState.selectedWorkerId == null) {
+      uiState.sessions.map { it.id }.toSet()
+    } else {
+      mutableSetOf<String>().apply {
+        uiState.sessions
+          .filter { session -> session.activeWorkerId == uiState.selectedWorkerId }
+          .forEach { add(it.id) }
+        uiState.tasks
+          .filter {
+            it.assignedWorkerId == uiState.selectedWorkerId ||
+              it.preferredWorkerId == uiState.selectedWorkerId
+          }
+          .forEach { add(it.sessionId) }
+      }
+    }
   }
-  val recentMessages = remember(uiState.messages) {
-    uiState.messages.sortedByDescending { it.createdAt }.take(12)
+  val visibleSessions = remember(uiState.sessions, selectedWorkerSessionIds) {
+    uiState.sessions.filter { it.id in selectedWorkerSessionIds }
+  }
+  val activeTasks = remember(uiState.tasks, uiState.selectedWorkerId) {
+    uiState.tasks.filter {
+      it.status in listOf("planning", "queued", "assigned", "running", "blocked", "paused", "waiting_approval") &&
+        (uiState.selectedWorkerId == null ||
+          it.assignedWorkerId == uiState.selectedWorkerId ||
+          it.preferredWorkerId == uiState.selectedWorkerId)
+    }
+  }
+  val recentMessages = remember(uiState.messages, selectedWorkerSessionIds) {
+    uiState.messages
+      .filter { it.sessionId in selectedWorkerSessionIds }
+      .sortedByDescending { it.createdAt }
+      .take(12)
+  }
+  val visibleDeviceProjects = remember(uiState.deviceProjects, uiState.selectedWorkerId) {
+    uiState.deviceProjects.filter { project ->
+      uiState.selectedWorkerId == null || project.workerId == uiState.selectedWorkerId
+    }
   }
 
   Column(verticalArrangement = Arrangement.spacedBy(16.dp)) {
@@ -613,14 +648,34 @@ private fun OverviewTab(
       }
     }
 
-    SectionHeading("所有项目")
-    if (uiState.sessions.isEmpty()) {
+    SectionHeading(if (selectedWorker != null) "${selectedWorker.name} 的 Codex 项目" else "设备 Codex 项目")
+    if (visibleDeviceProjects.isEmpty()) {
       EmptyStateCard(
-        title = "还没有项目",
-        body = "你可以在手机上创建，也可以在电脑入口创建。Boss 会自动把它们同步到这里。",
+        title = "当前还没有同步到 Codex 项目",
+        body = if (selectedWorker != null) {
+          "这台设备还没把本机 Codex 项目索引上报到 Boss，等下一次心跳后会自动刷新。"
+        } else {
+          "选中一台设备后，这里会显示该设备当前打开或最近活跃的 Codex 项目。"
+        },
       )
     } else {
-      uiState.sessions.forEach { session ->
+      visibleDeviceProjects.forEach { project ->
+        DeviceProjectCard(project = project)
+      }
+    }
+
+    SectionHeading(if (selectedWorker != null) "该设备关联会话" else "所有项目")
+    if (visibleSessions.isEmpty()) {
+      EmptyStateCard(
+        title = if (selectedWorker != null) "这台设备还没有关联会话" else "还没有项目",
+        body = if (selectedWorker != null) {
+          "你可以先切到这台设备发起任务，Boss 会把相关会话自动归到它下面。"
+        } else {
+          "你可以在手机上创建，也可以在电脑入口创建。Boss 会自动把它们同步到这里。"
+        },
+      )
+    } else {
+      visibleSessions.forEach { session ->
         val recentMessage = messagesBySession[session.id]?.maxByOrNull { it.createdAt }
         val sessionTasks = tasksBySession[session.id].orEmpty()
         val sessionWorkerNames = sessionTasks
@@ -1360,6 +1415,72 @@ private fun ProjectOverviewCard(
   }
 }
 
+@Composable
+private fun DeviceProjectCard(
+  project: DeviceProject,
+) {
+  OutlinedCard(
+    modifier = Modifier.fillMaxWidth(),
+    colors = CardDefaults.outlinedCardColors(
+      containerColor = if (project.status == "active") {
+        MaterialTheme.colorScheme.primaryContainer.copy(alpha = 0.35f)
+      } else {
+        MaterialTheme.colorScheme.surface
+      },
+    ),
+  ) {
+    Column(
+      modifier = Modifier.padding(16.dp),
+      verticalArrangement = Arrangement.spacedBy(10.dp),
+    ) {
+      Row(
+        modifier = Modifier.fillMaxWidth(),
+        horizontalArrangement = Arrangement.SpaceBetween,
+        verticalAlignment = Alignment.CenterVertically,
+      ) {
+        Column(modifier = Modifier.weight(1f)) {
+          Text(project.projectName, style = MaterialTheme.typography.titleMedium, fontWeight = FontWeight.SemiBold)
+          Text(
+            project.workspaceRoot,
+            color = MaterialTheme.colorScheme.onSurfaceVariant,
+            maxLines = 1,
+            overflow = TextOverflow.Ellipsis,
+          )
+        }
+        StatusChip(
+          label = if (project.status == "active") "当前活跃" else "最近活跃",
+          tone = if (project.status == "active") "running" else "pending",
+        )
+      }
+
+      if (project.primaryThreadTitle.isNotBlank()) {
+        Text("主对话：${project.primaryThreadTitle}")
+      }
+      if (project.recentThreadTitles.isNotEmpty()) {
+        Text(
+          "最近对话：${project.recentThreadTitles.joinToString(" · ")}",
+          color = MaterialTheme.colorScheme.onSurfaceVariant,
+          maxLines = 2,
+          overflow = TextOverflow.Ellipsis,
+        )
+      }
+
+      Row(horizontalArrangement = Arrangement.spacedBy(10.dp)) {
+        AssistChip(onClick = {}, label = { Text("${project.recentThreadCount} 个对话") })
+        if (project.pinnedThreadIds.isNotEmpty()) {
+          AssistChip(onClick = {}, label = { Text("${project.pinnedThreadIds.size} 个置顶") })
+        }
+      }
+
+      Text(
+        "最近同步 ${formatRelative(project.updatedAt)}",
+        style = MaterialTheme.typography.bodySmall,
+        color = MaterialTheme.colorScheme.onSurfaceVariant,
+      )
+    }
+  }
+}
+
 @Composable
 private fun GlobalMessageCard(
   message: Message,
diff --git a/android-app/app/src/main/java/site/hyzq/bossandroid/ui/BossViewModel.kt b/android-app/app/src/main/java/site/hyzq/bossandroid/ui/BossViewModel.kt
index 60827f6..cff8885 100644
--- a/android-app/app/src/main/java/site/hyzq/bossandroid/ui/BossViewModel.kt
+++ b/android-app/app/src/main/java/site/hyzq/bossandroid/ui/BossViewModel.kt
@@ -19,6 +19,7 @@ import site.hyzq.bossandroid.model.AppStatePayload
 import site.hyzq.bossandroid.model.ApprovalRequest
 import site.hyzq.bossandroid.model.BossEvent
 import site.hyzq.bossandroid.model.DeviceBinding
+import site.hyzq.bossandroid.model.DeviceProject
 import site.hyzq.bossandroid.model.HealthPayload
 import site.hyzq.bossandroid.model.Message
 import site.hyzq.bossandroid.model.Session
@@ -63,6 +64,7 @@ data class BossUiState(
   val approvals: List<ApprovalRequest> = emptyList(),
   val workers: List<WorkerNode> = emptyList(),
   val deviceBindings: List<DeviceBinding> = emptyList(),
+  val deviceProjects: List<DeviceProject> = emptyList(),
   val events: List<BossEvent> = emptyList(),
   val selectedSessionId: String? = null,
   val selectedWorkerId: String? = null,
@@ -361,6 +363,10 @@ class BossViewModel(
     val approvals = snapshot.approvals.sortedByDescending { it.updatedAt }
     val workers = snapshot.workers.sortedBy { it.name.lowercase() }
     val deviceBindings = snapshot.deviceBindings.sortedByDescending { it.updatedAt }
+    val deviceProjects = snapshot.deviceProjects.sortedWith(
+      compareByDescending<DeviceProject> { it.status == "active" }
+        .thenByDescending { it.updatedAt },
+    )
     val events = snapshot.events.sortedByDescending { it.timestamp }
 
     val selectedSessionId = preferredSessionId
@@ -383,6 +389,7 @@ class BossViewModel(
         approvals = approvals,
         workers = workers,
         deviceBindings = deviceBindings,
+        deviceProjects = deviceProjects,
         events = events,
         health = HealthPayload(
           status = "ok",
diff --git a/src/codex-project-sync.ts b/src/codex-project-sync.ts
new file mode 100644
index 0000000..85c6a04
--- /dev/null
+++ b/src/codex-project-sync.ts
@@ -0,0 +1,234 @@
+import { createHash } from "node:crypto";
+import { existsSync, readFileSync } from "node:fs";
+import { basename, join, resolve } from "node:path";
+import { homedir } from "node:os";
+import type { DeviceProject } from "./types.js";
+import { now } from "./utils.js";
+
+interface SessionIndexEntry {
+  id: string;
+  thread_name?: string;
+  updated_at?: string;
+}
+
+interface GlobalStatePayload {
+  ["active-workspace-roots"]?: unknown;
+  ["electron-saved-workspace-roots"]?: unknown;
+  ["electron-workspace-root-labels"]?: unknown;
+  ["pinned-thread-ids"]?: unknown;
+  ["thread-workspace-root-hints"]?: unknown;
+}
+
+interface ProjectThreadSummary {
+  id: string;
+  title: string;
+  updatedAt: string;
+}
+
+interface ProjectDraft {
+  workspaceRoot: string;
+  workspaceLabel: string;
+  projectName: string;
+  active: boolean;
+  updatedAt: string;
+  threads: ProjectThreadSummary[];
+  pinnedThreadIds: Set<string>;
+}
+
+function resolveCodexHome(): string {
+  const configured = process.env.BOSS_CODEX_HOME?.trim();
+  if (configured) {
+    return resolve(configured);
+  }
+
+  return resolve(homedir(), ".codex");
+}
+
+function normalizeWorkspaceRoot(value: string): string {
+  const trimmed = value.trim();
+  if (!trimmed) {
+    return "";
+  }
+
+  return trimmed.replace(/[\\/]+$/, "");
+}
+
+function readJsonFile<T>(filePath: string): T | null {
+  if (!existsSync(filePath)) {
+    return null;
+  }
+
+  try {
+    return JSON.parse(readFileSync(filePath, "utf8")) as T;
+  } catch {
+    return null;
+  }
+}
+
+function readJsonLines<T>(filePath: string): T[] {
+  if (!existsSync(filePath)) {
+    return [];
+  }
+
+  const lines = readFileSync(filePath, "utf8")
+    .split(/\r?\n/)
+    .map((line) => line.trim())
+    .filter(Boolean);
+
+  const result: T[] = [];
+  for (const line of lines) {
+    try {
+      result.push(JSON.parse(line) as T);
+    } catch {
+      // ignore malformed lines
+    }
+  }
+
+  return result;
+}
+
+function asStringList(input: unknown): string[] {
+  if (!Array.isArray(input)) {
+    return [];
+  }
+
+  return input
+    .map((value) => (typeof value === "string" ? normalizeWorkspaceRoot(value) : ""))
+    .filter(Boolean);
+}
+
+function asStringRecord(input: unknown): Record<string, string> {
+  if (!input || typeof input !== "object" || Array.isArray(input)) {
+    return {};
+  }
+
+  const entries = Object.entries(input as Record<string, unknown>)
+    .map(([key, value]) => [key, typeof value === "string" ? normalizeWorkspaceRoot(value) : ""] as const)
+    .filter(([, value]) => Boolean(value));
+
+  return Object.fromEntries(entries);
+}
+
+function asWorkspaceLabels(input: unknown): Record<string, string> {
+  if (!input || typeof input !== "object" || Array.isArray(input)) {
+    return {};
+  }
+
+  const entries = Object.entries(input as Record<string, unknown>)
+    .map(([key, value]) => [normalizeWorkspaceRoot(key), typeof value === "string" ? value.trim() : ""] as const)
+    .filter(([key, value]) => Boolean(key && value));
+
+  return Object.fromEntries(entries);
+}
+
+function createProjectDraft(
+  workspaceRoot: string,
+  workspaceLabels: Record<string, string>,
+  activeRoots: Set<string>,
+): ProjectDraft {
+  const workspaceLabel = workspaceLabels[workspaceRoot] || basename(workspaceRoot) || workspaceRoot;
+  return {
+    workspaceRoot,
+    workspaceLabel,
+    projectName: workspaceLabel,
+    active: activeRoots.has(workspaceRoot),
+    updatedAt: now(),
+    threads: [],
+    pinnedThreadIds: new Set<string>(),
+  };
+}
+
+function projectId(workerId: string, workspaceRoot: string): string {
+  const digest = createHash("sha1")
+    .update(`${workerId}:${workspaceRoot}`)
+    .digest("hex")
+    .slice(0, 12);
+  return `device_project_${digest}`;
+}
+
+export function scanLocalCodexProjects(workerId: string, workspaceHint?: string): DeviceProject[] {
+  const codexHome = resolveCodexHome();
+  const globalState = readJsonFile<GlobalStatePayload>(join(codexHome, ".codex-global-state.json")) ?? {};
+  const sessionIndex = readJsonLines<SessionIndexEntry>(join(codexHome, "session_index.jsonl"));
+
+  const activeRoots = new Set([
+    ...asStringList(globalState["active-workspace-roots"]),
+    normalizeWorkspaceRoot(workspaceHint ?? ""),
+  ].filter(Boolean));
+  const workspaceLabels = asWorkspaceLabels(globalState["electron-workspace-root-labels"]);
+  const threadWorkspaceHints = asStringRecord(globalState["thread-workspace-root-hints"]);
+  const pinnedThreadIds = new Set(
+    Array.isArray(globalState["pinned-thread-ids"])
+      ? globalState["pinned-thread-ids"].filter((value): value is string => typeof value === "string" && value.trim().length > 0)
+      : [],
+  );
+
+  const drafts = new Map<string, ProjectDraft>();
+
+  for (const workspaceRoot of activeRoots) {
+    drafts.set(workspaceRoot, createProjectDraft(workspaceRoot, workspaceLabels, activeRoots));
+  }
+
+  const sortedSessions = sessionIndex
+    .filter((entry) => entry.id && threadWorkspaceHints[entry.id])
+    .sort((left, right) => (right.updated_at ?? "").localeCompare(left.updated_at ?? ""))
+    .slice(0, 300);
+
+  for (const entry of sortedSessions) {
+    const workspaceRoot = threadWorkspaceHints[entry.id];
+    if (!workspaceRoot) {
+      continue;
+    }
+
+    const updatedAt = entry.updated_at?.trim() || now();
+    const threadTitle = entry.thread_name?.trim() || "未命名对话";
+    const draft =
+      drafts.get(workspaceRoot) ??
+      createProjectDraft(workspaceRoot, workspaceLabels, activeRoots);
+
+    if (pinnedThreadIds.has(entry.id)) {
+      draft.pinnedThreadIds.add(entry.id);
+    }
+
+    draft.updatedAt = draft.updatedAt > updatedAt ? draft.updatedAt : updatedAt;
+    draft.active = draft.active || activeRoots.has(workspaceRoot);
+    draft.threads.push({
+      id: entry.id,
+      title: threadTitle,
+      updatedAt,
+    });
+    drafts.set(workspaceRoot, draft);
+  }
+
+  return Array.from(drafts.values())
+    .map((draft) => {
+      const threads = draft.threads
+        .sort((left, right) => right.updatedAt.localeCompare(left.updatedAt));
+      const primaryThread = threads[0];
+      const recentThreadTitles = Array.from(
+        new Set(threads.map((thread) => thread.title).filter(Boolean)),
+      ).slice(0, 3);
+
+      return {
+        id: projectId(workerId, draft.workspaceRoot),
+        workerId,
+        source: "codex",
+        workspaceRoot: draft.workspaceRoot,
+        workspaceLabel: draft.workspaceLabel,
+        projectName: draft.projectName,
+        status: draft.active ? "active" : "recent",
+        primaryThreadId: primaryThread?.id ?? null,
+        primaryThreadTitle: primaryThread?.title ?? "",
+        recentThreadTitles,
+        recentThreadCount: threads.length,
+        pinnedThreadIds: Array.from(draft.pinnedThreadIds),
+        updatedAt: primaryThread?.updatedAt ?? draft.updatedAt,
+      } satisfies DeviceProject;
+    })
+    .sort((left, right) => {
+      if (left.status !== right.status) {
+        return left.status === "active" ? -1 : 1;
+      }
+      return right.updatedAt.localeCompare(left.updatedAt);
+    });
+}
diff --git a/src/engine.ts b/src/engine.ts
index e5c6fae..4ae3b49 100644
--- a/src/engine.ts
+++ b/src/engine.ts
@@ -4,6 +4,7 @@ import type {
   AppState,
   BossEvent,
   DeviceBinding,
+  DeviceProject,
   ExecutorKind,
   Message,
   Session,
@@ -448,6 +449,7 @@ export class BossEngine {
       worker.currentTaskId = null;
       worker.updatedAt = timestamp;
       worker.lastSeenAt = timestamp;
+      state.deviceProjects = state.deviceProjects.filter((project) => project.workerId !== worker.id);
       addEvent({
         sessionId: null,
         taskId: null,
@@ -466,7 +468,7 @@ export class BossEngine {
     return updated;
   }
 
-  heartbeat(workerId: string, load = 0): WorkerNode {
+  heartbeat(workerId: string, load = 0, deviceProjects: DeviceProject[] = []): WorkerNode {
     let updated!: WorkerNode;
     this.commit((state, addEvent) => {
       const worker = state.workers.find((candidate) => candidate.id === workerId);
@@ -496,10 +498,60 @@ export class BossEngine {
       updated = { ...worker };
     });
 
+    if (deviceProjects.length > 0 || this.getState().deviceProjects.some((project) => project.workerId === workerId)) {
+      this.syncWorkerProjects(workerId, deviceProjects);
+    }
+
     this.syncAssignments();
     return updated;
   }
 
+  syncWorkerProjects(workerId: string, projects: DeviceProject[]): DeviceProject[] {
+    let updatedProjects: DeviceProject[] = [];
+
+    this.commit((state, addEvent) => {
+      const worker = state.workers.find((candidate) => candidate.id === workerId);
+      if (!worker) {
+        throw new Error(`Worker not found: ${workerId}`);
+      }
+
+      const normalizedProjects = projects
+        .map((project) => ({
+          ...project,
+          workerId,
+        }))
+        .sort((left, right) => right.updatedAt.localeCompare(left.updatedAt));
+      const existingProjects = state.deviceProjects
+        .filter((project) => project.workerId === workerId)
+        .sort((left, right) => right.updatedAt.localeCompare(left.updatedAt));
+      const changed = JSON.stringify(existingProjects) !== JSON.stringify(normalizedProjects);
+
+      if (!changed) {
+        updatedProjects = normalizedProjects;
+        return;
+      }
+
+      state.deviceProjects = [
+        ...state.deviceProjects.filter((project) => project.workerId !== workerId),
+        ...normalizedProjects,
+      ];
+      addEvent({
+        sessionId: null,
+        taskId: worker.currentTaskId,
+        source: "worker",
+        type: "worker.projects.synced",
+        payload: {
+          workerId,
+          projectCount: normalizedProjects.length,
+          projectNames: normalizedProjects.map((project) => project.projectName).slice(0, 8),
+        },
+      });
+      updatedProjects = normalizedProjects;
+    });
+
+    return updatedProjects;
+  }
+
   claimNextTask(workerId: string): Task | null {
     let claimedTask: Task | null = null;
 
@@ -999,6 +1051,7 @@ export class BossEngine {
         }
 
         worker.currentTaskId = null;
+        state.deviceProjects = state.deviceProjects.filter((project) => project.workerId !== worker.id);
         addEvent({
           sessionId: null,
           taskId: null,
diff --git a/src/server.ts b/src/server.ts
index 5d420dd..f00fd51 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -2,7 +2,7 @@ import path from "node:path";
 import Fastify from "fastify";
 import fastifyStatic from "@fastify/static";
 import { BossEngine } from "./engine.js";
-import type { DeviceBinding } from "./types.js";
+import type { DeviceBinding, DeviceProject } from "./types.js";
 
 const engine = new BossEngine();
 const app = Fastify({ logger: process.env.BOSS_DEBUG === "1" });
@@ -308,8 +308,8 @@ app.get(withBase("/api/device-bindings/:token/bootstrap.ps1"), async (request, r
 
 app.post(withBase("/api/workers/:workerId/heartbeat"), async (request) => {
   const params = request.params as { workerId: string };
-  const body = (request.body ?? {}) as { load?: number };
-  return engine.heartbeat(params.workerId, body.load ?? 0);
+  const body = (request.body ?? {}) as { load?: number; deviceProjects?: DeviceProject[] };
+  return engine.heartbeat(params.workerId, body.load ?? 0, body.deviceProjects ?? []);
 });
 
 app.post(withBase("/api/workers/:workerId/offline"), async (request) => {
diff --git a/src/store.ts b/src/store.ts
index b50af2a..cfe25b9 100644
--- a/src/store.ts
+++ b/src/store.ts
@@ -10,6 +10,7 @@ function defaultState(): AppState {
     workers: [],
     approvals: [],
     deviceBindings: [],
+    deviceProjects: [],
     events: [],
   };
 }
diff --git a/src/types.ts b/src/types.ts
index 452341a..6a6c6d5 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -15,6 +15,7 @@ export type ApprovalStatus = "pending" | "approved" | "rejected";
 export type RiskLevel = "low" | "medium" | "high";
 export type DeviceBindingStatus = "pending" | "claimed" | "expired";
 export type ExecutorKind = "codex" | "claude";
+export type DeviceProjectStatus = "active" | "recent";
 
 export interface Session {
   id: string;
@@ -101,6 +102,22 @@ export interface DeviceBinding {
   updatedAt: string;
 }
 
+export interface DeviceProject {
+  id: string;
+  workerId: string;
+  source: "codex";
+  workspaceRoot: string;
+  workspaceLabel: string;
+  projectName: string;
+  status: DeviceProjectStatus;
+  primaryThreadId: string | null;
+  primaryThreadTitle: string;
+  recentThreadTitles: string[];
+  recentThreadCount: number;
+  pinnedThreadIds: string[];
+  updatedAt: string;
+}
+
 export interface BossEvent {
   id: string;
   sessionId: string | null;
@@ -118,6 +135,7 @@ export interface AppState {
   workers: WorkerNode[];
   approvals: ApprovalRequest[];
   deviceBindings: DeviceBinding[];
+  deviceProjects: DeviceProject[];
   events: BossEvent[];
 }
 
diff --git a/src/worker.ts b/src/worker.ts
index 3ca308c..f5506fb 100644
--- a/src/worker.ts
+++ b/src/worker.ts
@@ -1,6 +1,8 @@
 import { spawn } from "node:child_process";
 import { resolve } from "node:path";
 import { setTimeout as delay } from "node:timers/promises";
+import { scanLocalCodexProjects } from "./codex-project-sync.js";
+import type { DeviceProject } from "./types.js";
 
 interface Task {
   id: string;
@@ -20,6 +22,8 @@ interface WorkerOptions {
   progressIntervalMs: number;
 }
 
+const PROJECT_SYNC_INTERVAL_MS = Number(process.env.BOSS_PROJECT_SYNC_INTERVAL_MS ?? 15_000);
+
 class HttpError extends Error {
   constructor(
     readonly status: number,
@@ -116,6 +120,18 @@ async function registerWorker(options: WorkerOptions) {
   return worker;
 }
 
+async function syncHeartbeat(
+  options: WorkerOptions,
+  workerId: string,
+  load: number,
+  deviceProjects: DeviceProject[],
+) {
+  return postJson(`${options.server}/api/workers/${workerId}/heartbeat`, {
+    load,
+    deviceProjects,
+  });
+}
+
 async function taskStillRunnable(server: string, taskId: string) {
   try {
     const task = (await getJson(`${server}/api/tasks/${taskId}`)) as { status: string };
@@ -256,6 +272,8 @@ async function runCommandTask(options: WorkerOptions, workerId: string, task: Ta
 
   let cancelled = false;
   const startedAt = Date.now();
+  let cachedProjects: DeviceProject[] = [];
+  let lastProjectSyncAt = 0;
 
   while (!exitState.done) {
     await delay(options.progressIntervalMs);
@@ -270,6 +288,12 @@ async function runCommandTask(options: WorkerOptions, workerId: string, task: Ta
       break;
     }
 
+    if (Date.now() - lastProjectSyncAt >= PROJECT_SYNC_INTERVAL_MS) {
+      cachedProjects = scanLocalCodexProjects(workerId, options.workspace);
+      lastProjectSyncAt = Date.now();
+      await syncHeartbeat(options, workerId, 1, cachedProjects);
+    }
+
     const elapsed = Date.now() - startedAt;
     const progressPercent = Math.min(90, 20 + Math.floor(elapsed / options.progressIntervalMs) * 10);
     await postJson(`${options.server}/api/tasks/${task.id}/progress`, {
@@ -323,10 +347,17 @@ async function executeTask(options: WorkerOptions, workerId: string, task: Task)
 async function main() {
   const options = parseArgs(process.argv.slice(2));
   let worker = await registerWorker(options);
+  let cachedProjects: DeviceProject[] = [];
+  let lastProjectSyncAt = 0;
 
   for (;;) {
     try {
-      await postJson(`${options.server}/api/workers/${worker.id}/heartbeat`, { load: 0 });
+      if (Date.now() - lastProjectSyncAt >= PROJECT_SYNC_INTERVAL_MS) {
+        cachedProjects = scanLocalCodexProjects(worker.id, options.workspace);
+        lastProjectSyncAt = Date.now();
+      }
+
+      await syncHeartbeat(options, worker.id, 0, cachedProjects);
       const response = (await postJson(`${options.server}/api/workers/${worker.id}/claim-next`, {})) as {
         task: Task | null;
       };