diff --git a/PROGRESS.md b/PROGRESS.md
index cb996a6..6a9ee93 100644
--- a/PROGRESS.md
+++ b/PROGRESS.md
@@ -23,6 +23,7 @@
 
 ### 2026-06-04
 
+- **前端顶栏展示用户已用存储**:后端已有 `user_disk_usage` 表(后台 15min 扫描落库),但无对外查询口。加 `GET /v1/user/storage`(`Depends(require_user)`),返 `{bytes_used, file_count, limit_bytes, scanned_at}`,`limit_bytes` 由 `parse_bytes(quotas.disk_bytes_per_user)` 得(≤0/None=不限）。`disk_quota.get_user_usage` 扩为返 `(bytes,count,scanned_at)` 三元组(复用而非新开函数，顺手改唯一调用方 `check_disk_quota` 解包）。前端 `dev.html` 右侧「文件」面板底部钉一条进度条+文字指示器（`#pane-right` 改 flex 列让 `#file-list` 独占滚动、存储条钉底；`loadStorage()` 在 `enterApp` 拉一次；不限额时只显已用、隐进度条；超额变红；hover 显文件数+统计时间）。
 - **sandbox 容器 env 收编到一处 + shell 也注入(修两个只读 rootfs 副作用)**:① `PYTHONPATH=/sandbox:/workspace` 原先只 `run_python` 注入,shell 里 `python -c "from skills..."` 撞 ModuleNotFoundError;② `--read-only` rootfs 下 `/home/zcbot` 不可写,matplotlib/fontconfig 往 `~/.config`/`~/.cache` 写缓存刷 "Read-only file system" / "No writable cache" 噪音。改:`executor_docker.py` 抽 `_CONTAINER_ENV = {PYTHONPATH, HOME=/tmp}`,shell/run_python/fs 三路共用(`-e` 确定性覆盖)—— `HOME=/tmp` 一刀让缓存落 tmpfs(matplotlib→/tmp/.config、fontconfig→/tmp/.cache),不用逐个 MPLCONFIGDIR/XDG_CACHE_HOME。纯代码改,重启 web 生效,免重建镜像。
 
 ### 2026-06-03
diff --git a/core/storage/disk_quota.py b/core/storage/disk_quota.py
index 3138fc4..f13adbd 100644
--- a/core/storage/disk_quota.py
+++ b/core/storage/disk_quota.py
@@ -16,6 +16,7 @@ from __future__ import annotations
 
 import os
 import re
+from datetime import datetime
 from pathlib import Path
 from typing import Iterable, List, Optional, Tuple
 from uuid import UUID
@@ -128,16 +129,19 @@ def upsert_user_usage(user_id: UUID, bytes_used: int, file_count: int) -> None:
         s.execute(stmt)
 
 
-def get_user_usage(user_id: UUID) -> Optional[Tuple[int, int]]:
-    """读最近一次扫描结果 (bytes, count);无记录返 None。"""
+def get_user_usage(user_id: UUID) -> Optional[Tuple[int, int, Optional[datetime]]]:
+    """读最近一次扫描结果 (bytes, count, scanned_at);无记录返 None。"""
     with session_scope() as s:
         row = s.execute(
-            select(UserDiskUsage.bytes_used, UserDiskUsage.file_count)
-            .where(UserDiskUsage.user_id == user_id)
+            select(
+                UserDiskUsage.bytes_used,
+                UserDiskUsage.file_count,
+                UserDiskUsage.scanned_at,
+            ).where(UserDiskUsage.user_id == user_id)
         ).first()
         if row is None:
             return None
-        return int(row[0]), int(row[1])
+        return int(row[0]), int(row[1]), row[2]
 
 
 def check_disk_quota(user_id: UUID, limit_bytes: int) -> Optional[str]:
@@ -151,7 +155,7 @@ def check_disk_quota(user_id: UUID, limit_bytes: int) -> Optional[str]:
     usage = get_user_usage(user_id)
     if usage is None:
         return None  # 首次,放行,首次扫描后下次 gate 才生效
-    used, _ = usage
+    used, _, _ = usage
     if used >= limit_bytes:
         used_mb = used / (1024 ** 2)
         limit_mb = limit_bytes / (1024 ** 2)
diff --git a/web/app.py b/web/app.py
index 616e6b5..53b194a 100644
--- a/web/app.py
+++ b/web/app.py
@@ -1472,6 +1472,30 @@ def create_app() -> FastAPI:
 
     # ───────────── Files(user-rooted,不绑 task) ─────────────
 
+    @app.get("/v1/user/storage", tags=["user"])
+    def user_storage(user_id: UUID = Depends(require_user)):
+        """当前用户磁盘用量 + 配额。
+
+        数据来自后台扫描落库的 user_disk_usage(默 15min 一次),非实时;
+        无扫描记录(新用户 / 首次扫描前)bytes_used/file_count=0、scanned_at=None。
+        limit_bytes<=0 或 None → 不限(前端不画进度条)。
+        """
+        from core.agent_builder import load_config as _load_cfg
+        from core.storage.disk_quota import get_user_usage, parse_bytes
+        _quotas_cfg = (_load_cfg().get("quotas") or {})
+        _limit = parse_bytes(_quotas_cfg.get("disk_bytes_per_user"))
+        usage = get_user_usage(user_id)
+        if usage is None:
+            bytes_used, file_count, scanned_at = 0, 0, None
+        else:
+            bytes_used, file_count, scanned_at = usage
+        return {
+            "bytes_used": bytes_used,
+            "file_count": file_count,
+            "limit_bytes": (_limit if (_limit and _limit > 0) else None),
+            "scanned_at": scanned_at.isoformat() if scanned_at else None,
+        }
+
     @app.get("/v1/files", tags=["files"])
     def list_files(
         path: str = "",
diff --git a/web/static/dev.html b/web/static/dev.html
index 92b57e6..7fd4a25 100644
--- a/web/static/dev.html
+++ b/web/static/dev.html
@@ -231,7 +231,10 @@
   #task-scroll { flex: 1; min-height: 0; overflow: auto; }
   /* min-height: 0 + overflow: hidden 让内部 flex 子项的 overflow: auto 真正生效(否则被默认 min-height: auto 顶出) */
   #pane-mid { grid-area: mid; display: flex; flex-direction: column; border-right: 1px solid var(--border); background: var(--panel); min-height: 0; min-width: 0; overflow: hidden; }
-  #pane-right { grid-area: right; border-right: none; overflow: auto; background: var(--panel); min-height: 0; }
+  /* flex 列:pane-head / crumbs / 上传状态固定,#file-list 独占滚动,存储条钉底 */
+  #pane-right { grid-area: right; border-right: none; display: flex; flex-direction: column; overflow: hidden; background: var(--panel); min-height: 0; }
+  #pane-right > .pane-head, #pane-right > #file-crumbs, #pane-right > .upload-status { flex-shrink: 0; }
+  #file-list { flex: 1 1 auto; overflow: auto; min-height: 0; }
 
   .splitter {
     min-width: 6px; background: var(--bg); cursor: col-resize;
@@ -516,6 +519,29 @@
     background: var(--accent); transition: width .12s linear;
   }
 
+  /* 存储用量条:钉在文件面板底部。用量来自后台扫描(默 15min),非实时;超额变红。
+     用 class 选择器(非 #id)压低特异性,让折叠/手机隐藏规则能盖住它 */
+  .storage-foot {
+    display: none; flex-shrink: 0; align-items: center; gap: 8px;
+    padding: 7px 12px; border-top: 1px solid var(--border); background: #fff;
+    font-size: 11px; color: var(--muted); font-family: var(--mono); cursor: default;
+  }
+  .storage-foot.show { display: flex; }
+  .storage-foot .lbl { flex-shrink: 0; }
+  .storage-foot .bar {
+    flex: 1 1 auto; min-width: 0; height: 6px; border-radius: 3px;
+    background: var(--border-soft); overflow: hidden;
+  }
+  .storage-foot .bar > i {
+    display: block; height: 100%; width: 0;
+    background: linear-gradient(90deg, var(--accent), #8e2a20);
+    transition: width .3s ease;
+  }
+  .storage-foot .txt { flex-shrink: 0; white-space: nowrap; }
+  .storage-foot.nolimit .bar { display: none; }
+  .storage-foot.over .bar > i { background: #c0392b; }
+  .storage-foot.over .txt { color: #c0392b; font-weight: 600; }
+
   /* ───── source picker modal(选入文件:勾源 + 复制/移动到主区当前目录) ───── */
   #src-picker-modal { z-index: 95; }
   #src-picker-modal .card {
@@ -694,7 +720,7 @@
     }
     body.mv-left  #pane-left  { display: block; }
     body.mv-mid   #pane-mid   { display: flex; }
-    body.mv-right #pane-right { display: block; }
+    body.mv-right #pane-right { display: flex; }
     /* 折叠按钮在手机不可见 */
     #pane-toggle-left, #pane-toggle-right, .splitter { display: none !important; }
 
@@ -958,6 +984,11 @@
     <div id="file-upload-status" class="upload-status"></div>
     <div id="file-crumbs" class="crumbs muted">加载中…</div>
     <div id="file-list"></div>
+    <div id="storage-foot" class="storage-foot" title="">
+      <span class="lbl">存储</span>
+      <span class="bar"><i id="storage-foot-bar"></i></span>
+      <span class="txt" id="storage-foot-txt"></span>
+    </div>
     <div id="file-droparea">松开以上传到当前目录</div>
     <input type="file" id="upload-input" multiple style="display:none;" />
   </div>
@@ -1523,6 +1554,32 @@ function enterApp() {
   loadFiles();  // 文件面板与 task 解耦 — 启动即拉 user_root
   loadModels(); // 模型清单缓存:chat-meta 下拉 + 新建对话框 + 历史小标
   loadFolderSuggestions();  // 灌 filter-wd select(modal 打开时会重拉,这里让左 pane 先有选项)
+  loadStorage(); // 顶栏存储用量(后台扫描快照,非实时)
+}
+
+// 存储用量:拉 /v1/user/storage 渲染文件面板底部进度条。用量来自后台 15min 扫描,
+// 故无需高频刷新 —— enterApp 拉一次即可。无配额上限时只显已用、不画进度条(nolimit)。
+async function loadStorage() {
+  let s;
+  try { s = await api("GET", "/v1/user/storage"); } catch (e) { return; }
+  const el = $("storage-foot");
+  const used = s.bytes_used || 0;
+  const limit = s.limit_bytes;
+  if (limit && limit > 0) {
+    const pct = Math.min(100, Math.round(used / limit * 100));
+    $("storage-foot-bar").style.width = pct + "%";
+    $("storage-foot-txt").textContent = `${humanSize(used)} / ${humanSize(limit)}`;
+    el.classList.remove("nolimit");
+    el.classList.toggle("over", used >= limit);
+  } else {
+    // 不限额:只显已用,隐藏进度条
+    $("storage-foot-txt").textContent = humanSize(used);
+    el.classList.add("nolimit");
+    el.classList.remove("over");
+  }
+  const when = s.scanned_at ? fmtTime(s.scanned_at) : "尚未统计";
+  el.title = `已用 ${humanSize(used)} · ${s.file_count || 0} 个文件\n统计于 ${when}（后台每 15 分钟扫描，非实时）`;
+  el.classList.add("show");
 }
 
 async function loadModels() {