diff --git a/apps/server/src/modules/acquisition-organize/services/organize-guard.ts b/apps/server/src/modules/acquisition-organize/services/organize-guard.ts
index ad3d0f3b..253c7ca2 100644
--- a/apps/server/src/modules/acquisition-organize/services/organize-guard.ts
+++ b/apps/server/src/modules/acquisition-organize/services/organize-guard.ts
@@ -1,6 +1,8 @@
 import { realpath } from "node:fs/promises";
 import { isAbsolute, resolve, sep } from "node:path";
 import type { Principal } from "../../../http/auth.ts";
+import { isRemotePath, vrealpath } from "../../../storage/vfs.ts";
+import { toVPath } from "../../../storage/vpath.ts";
 import { canonicalJson } from "../util.ts";
 import { type AoDeps, type Exec, hostPathOf, loadInstances, upsertDecision } from "./common.ts";
 import { hnrSatisfied } from "./retention.ts";
@@ -41,8 +43,17 @@ export async function allowedSourceRoots(exec: Exec): Promise<string[]> {
     for (const m of t.mappings) roots.add(m.hostPath);
     if (t.mappings.length === 0 && t.localSavePath) roots.add(t.localSavePath);
   }
+  // Alist 存储:实例根路径(文件管理 st: 根、整理来源可选)
+  for (const s of await exec
+    .selectFrom("storage_instance")
+    .select(["id", "root_path"])
+    .where("enabled", "=", true)
+    .execute())
+    roots.add(toVPath(s.id, s.root_path));
   const out: string[] = [];
-  for (const r of roots) if (r && isAbsolute(r)) out.push(await real(r.replace(/\/+$/, "") || "/"));
+  for (const r of roots)
+    if (r && isAbsolute(r))
+      out.push(isRemotePath(r) ? r.replace(/\/+$/, "") : await real(r.replace(/\/+$/, "") || "/"));
   // 根目录本身("/")不能作为白名单,否则等于不设防
   return [...new Set(out)].filter((r) => r !== "/");
 }
@@ -62,7 +73,7 @@ export async function sourceGuard(exec: Exec): Promise<SourceGuard> {
       if (p.split("/").some((seg) => seg === "..")) throw new PathGuardError(`源路径不允许包含 "..": ${p}`, p);
       let r: string;
       try {
-        r = await realpath(p);
+        r = isRemotePath(p) ? await vrealpath(p) : await realpath(p);
       } catch {
         throw new PathGuardError(`源路径不存在或不可访问：${p}`, p);
       }
diff --git a/apps/server/src/modules/acquisition-organize/services/organize-transfer.ts b/apps/server/src/modules/acquisition-organize/services/organize-transfer.ts
index cd5c9318..63219a33 100644
--- a/apps/server/src/modules/acquisition-organize/services/organize-transfer.ts
+++ b/apps/server/src/modules/acquisition-organize/services/organize-transfer.ts
@@ -1,9 +1,17 @@
 import { randomUUID } from "node:crypto";
 import { readdir, rmdir } from "node:fs/promises";
 import { dirname, join, relative } from "node:path";
-import { checkRoot, DEFAULT_ROOT_SENTINEL, statSafe } from "@umt/adapters";
+import { DEFAULT_ROOT_SENTINEL } from "@umt/adapters";
 import { fileKindOf, type OrganizeFileKind, type OrganizePlan, type PlannedFile } from "@umt/domain";
 import { organizationStatusFromFiles, organizePlanToFileResults } from "@umt/mapping";
+import {
+  isRemotePath,
+  vstatSafe as statSafe,
+  vcheckRoot,
+  vreaddir,
+  vreaddirStats,
+  vremove,
+} from "../../../storage/vfs.ts";
 import { hashJson, jsonb } from "../util.ts";
 import type { AoDeps, Exec } from "./common.ts";
 import { type ExecuteResult, emitRecord, type FrozenPlan, type ImportRequest, type PlanResult } from "./organize.ts";
@@ -27,7 +35,8 @@ export interface TransferItem {
 
 export interface TransferSpec {
   items: TransferItem[];
-  targetLibraryRootId: string;
+  /** 目标库根;目标是 Alist 存储根(文件管理 st:)时为 null */
+  targetLibraryRootId: string | null;
   /** 目标库根 realpath(相对路径以它为基准) */
   targetRootPath: string;
   /** 遍历到的每个文件都经它复核(realpath 在允许的根下) */
@@ -36,7 +45,7 @@ export interface TransferSpec {
 
 export interface FrozenTransfer {
   items: (TransferItem & { isDir: boolean; files: number })[];
-  targetLibraryRootId: string;
+  targetLibraryRootId: string | null;
 }
 
 const KIND_OF = (p: string): OrganizeFileKind => {
@@ -50,6 +59,18 @@ async function walkTree(
   out: { files: string[]; dirs: string[]; links: string[] },
   limit: number,
 ): Promise<boolean> {
+  if (isRemotePath(dir)) {
+    // Alist:一次 list 拿到子项与类型,没有符号链接
+    for (const it of (await vreaddirStats(dir)).sort((a, b) => (a.name < b.name ? -1 : 1))) {
+      if (out.files.length >= limit) return true;
+      const p = join(dir, it.name);
+      if (it.stats.isDirectory()) {
+        out.dirs.push(p);
+        if (await walkTree(p, out, limit)) return true;
+      } else out.files.push(p);
+    }
+    return false;
+  }
   const names = (await readdir(dir)).sort();
   for (const n of names) {
     if (out.files.length >= limit) return true;
@@ -71,14 +92,14 @@ export async function planTransfer(d: AoDeps, req: ImportRequest, t: TransferSpe
   const dry = req.dryRun === true;
   const action = req.action ?? "copy";
   const failed = (reason: string): PlanResult => ({ recordId: null, status: "failed", reason });
-  const root = await db
-    .selectFrom("library_root")
-    .selectAll()
-    .where("id", "=", t.targetLibraryRootId)
-    .executeTakeFirst();
-  if (root?.management_mode !== "managed") return failed("target_root_not_managed");
-  const sentinel = root.sentinel_file ?? DEFAULT_ROOT_SENTINEL;
-  const health = await checkRoot(t.targetRootPath, sentinel);
+  const lib = t.targetLibraryRootId
+    ? await db.selectFrom("library_root").selectAll().where("id", "=", t.targetLibraryRootId).executeTakeFirst()
+    : null;
+  if (t.targetLibraryRootId && lib?.management_mode !== "managed") return failed("target_root_not_managed");
+  if (!t.targetLibraryRootId && !isRemotePath(t.targetRootPath)) return failed("target_root_not_managed");
+  const root = { id: lib?.id ?? null };
+  const sentinel = isRemotePath(t.targetRootPath) ? "" : (lib?.sentinel_file ?? DEFAULT_ROOT_SENTINEL);
+  const health = await vcheckRoot(t.targetRootPath, sentinel);
   if (health.kind === "offline") return failed(`library_root_offline:${health.reason}`);
 
   const max = d.ports.options.walkMaxFiles;
@@ -148,7 +169,7 @@ export async function planTransfer(d: AoDeps, req: ImportRequest, t: TransferSpe
     organize: plan,
     entityId: req.mediaEntityId ?? "",
     mediaType: "movie",
-    libraryRootId: root.id,
+    libraryRootId: root.id ?? "",
     rootPath: t.targetRootPath,
     sentinel,
     targetDirs: [...dirs].sort(),
@@ -162,7 +183,7 @@ export async function planTransfer(d: AoDeps, req: ImportRequest, t: TransferSpe
   };
   if (dry) return { recordId: null, status: "queued", reason: null, plan: frozen, ...(truncated ? { truncated } : {}) };
 
-  const drafts = organizePlanToFileResults(plan, { targetLibraryRootId: root.id });
+  const drafts = organizePlanToFileResults(plan, { targetLibraryRootId: root.id ?? "" });
   const now = d.ports.now();
   const rel = (abs: string | null | undefined) => (abs ? relative(t.targetRootPath, abs) : null);
   const heldSrc = new Set(files.filter((f) => f.action === "hold").map((f) => f.src));
@@ -321,6 +342,15 @@ export async function relocate(trx: Exec, input: RelocateInput): Promise<Relocat
 /** 目录下的子目录,深的在前(删空目录用) */
 async function dirsDeepFirst(dir: string): Promise<string[]> {
   const out: string[] = [];
+  if (isRemotePath(dir)) {
+    const walk = async (p: string) => {
+      const ents = await vreaddirStats(p).catch(() => []);
+      for (const e of ents) if (e.stats.isDirectory()) await walk(join(p, e.name));
+      out.push(p);
+    };
+    await walk(dir);
+    return out;
+  }
   const walk = async (p: string) => {
     const ents = await readdir(p, { withFileTypes: true }).catch(() => []);
     for (const e of ents) if (e.isDirectory()) await walk(join(p, e.name));
@@ -330,6 +360,16 @@ async function dirsDeepFirst(dir: string): Promise<string[]> {
   return out;
 }
 
+/** 只删空目录(Alist 的 remove 会递归删,先确认为空) */
+async function removeEmptyDir(dir: string): Promise<void> {
+  if (!isRemotePath(dir)) {
+    await rmdir(dir).catch(() => undefined);
+    return;
+  }
+  const left = await vreaddir(dir).catch(() => null);
+  if (left && left.length === 0) await vremove(dir).catch(() => undefined);
+}
+
 /** 原样搬运的终态:记录状态 + move 的位置跟随/绑定修订 + 删源侧空目录;行锁 fencing,重复调用幂等 */
 export async function finalizeTransfer(d: AoDeps, recordId: string): Promise<ExecuteResult> {
   const db = d.ctx.db;
@@ -351,7 +391,7 @@ export async function finalizeTransfer(d: AoDeps, recordId: string): Promise<Exe
   // move:整个目录都搬完才删源侧空目录(先于终态提交;失败/中断重跑幂等)
   if (pre.action === "move" && (pre.status === "running" || pre.status === "queued"))
     for (const it of tr.items.filter((x) => x.isDir && allOk(x)))
-      for (const dir of await dirsDeepFirst(it.src)) await rmdir(dir).catch(() => undefined);
+      for (const dir of await dirsDeepFirst(it.src)) await removeEmptyDir(dir);
 
   return db.transaction().execute(async (trx) => {
     const rec = await trx
@@ -373,9 +413,9 @@ export async function finalizeTransfer(d: AoDeps, recordId: string): Promise<Exe
     if (rec.action === "move") {
       const actor = `organize:${recordId}`;
       for (const it of t.items) {
-        if (it.srcRel === null || it.srcLibraryRootId === null) continue;
+        if (it.srcRel === null || it.srcLibraryRootId === null || t.targetLibraryRootId === null) continue;
         const mine = files.filter((f) => under(it, f.source_path));
-        const base = { fromLib: it.srcLibraryRootId, toLib: t.targetLibraryRootId, actor, opKind: "move" as const };
+        const base = { fromLib: it.srcLibraryRootId, toLib: t.targetLibraryRootId!, actor, opKind: "move" as const };
         if (mine.length > 0 && mine.every((f) => f.status === "succeeded")) {
           // 整项搬完:按前缀跟随(目录含路径绑定修订)
           const r = await relocate(trx, { ...base, fromRel: it.srcRel, toRel: it.dstRel, isDir: it.isDir });
diff --git a/apps/server/src/modules/file-manager/common.ts b/apps/server/src/modules/file-manager/common.ts
index 5cdf6157..177f963a 100644
--- a/apps/server/src/modules/file-manager/common.ts
+++ b/apps/server/src/modules/file-manager/common.ts
@@ -1,10 +1,13 @@
 import { createHash } from "node:crypto";
 import { lstat, realpath, stat } from "node:fs/promises";
 import { basename, dirname, join, sep } from "node:path";
-import { checkRoot, DEFAULT_ROOT_SENTINEL, type TmdbClient } from "@umt/adapters";
+import { AlistError, checkRoot, DEFAULT_ROOT_SENTINEL, type TmdbClient } from "@umt/adapters";
 import type { ApiErrorCode, FileRootId, FilesErrorReason } from "@umt/contracts";
 import type { LibraryRootRow } from "@umt/db";
 import type { Principal } from "../../http/auth.ts";
+import { listStorages } from "../../storage/registry.ts";
+import { isRemotePath, remoteError, vcheckRoot, vlstat, vrealpath } from "../../storage/vfs.ts";
+import { parseVPath, toVPath } from "../../storage/vpath.ts";
 import type { AoDeps, Exec } from "../acquisition-organize/services/common.ts";
 import { loadInstances } from "../acquisition-organize/services/common.ts";
 import type { SourcesRuntime } from "../sources-identity/runtime.ts";
@@ -122,13 +125,15 @@ export const isOfflineErr = (e: unknown) => OFFLINE_CODES.has(errnoOf(e) ?? "");
  * 处理器里漏出的文件系统错误(检查与使用之间目录被删、挂载掉线等竞态)→ 业务错误,而不是 500:
  * 离线类 → 503 root_unavailable(失败 ≠ 空目录),ENOENT/ENOTDIR → 404,EACCES/EPERM → 403,其余 errno → 400。
  */
-export function fsErrorToFiles(e: unknown): FilesError | null {
-  if (e instanceof FilesError) return e;
+export function fsErrorToFiles(e0: unknown): FilesError | null {
+  if (e0 instanceof FilesError) return e0;
+  const e = e0 instanceof AlistError ? remoteError(e0) : e0;
   const code = errnoOf(e);
   if (typeof code !== "string" || !/^E[A-Z]+$/.test(code)) return null;
   const msg = e instanceof Error ? e.message : String(e);
   if (OFFLINE_CODES.has(code)) return new FilesError("root_unavailable", `读取失败(${code})，根可能已离线：${msg}`);
   if (code === "ENOENT" || code === "ENOTDIR") return new FilesError("not_found", `路径已不存在(${code})`);
+  if (code === "EEXIST") return new FilesError("exists", `目标已存在：${msg}`);
   if (code === "EACCES" || code === "EPERM") return new FilesError("forbidden", `没有访问权限(${code})`);
   return new FilesError("bad_request", `文件系统错误(${code}): ${msg}`);
 }
@@ -137,7 +142,7 @@ export function fsErrorToFiles(e: unknown): FilesError | null {
 
 export interface RootDef {
   id: FileRootId;
-  kind: "library" | "download";
+  kind: "library" | "download" | "storage";
   name: string;
   hostPath: string;
   mediaKind: LibraryRootRow["media_kind"] | null;
@@ -146,6 +151,9 @@ export interface RootDef {
   libraryRootId: string | null;
   instanceId: string | null;
   sentinel: string | null;
+  /** 所在 Alist 存储实例(本机为 null);hostPath 是虚拟路径 /@alist/<id>/… */
+  storageId: string | null;
+  storageName: string | null;
 }
 
 const norm = (p: string) => p.replace(/\/+$/, "") || "/";
@@ -153,10 +161,14 @@ const norm = (p: string) => p.replace(/\/+$/, "") || "/";
 /** 已登记的根:启用的库根 + 下载器路径映射本机前缀(无映射 = 同机,取保存路径);"/" 永不出现 */
 export async function loadRootDefs(exec: Exec): Promise<RootDef[]> {
   const out: RootDef[] = [];
+  const storages = await listStorages(exec as never).catch(() => []);
+  const storageName = new Map(storages.map((s) => [s.id, s.name]));
   const libs = await exec.selectFrom("library_root").selectAll().where("enabled", "=", true).orderBy("name").execute();
   for (const r of libs) {
     const hostPath = norm(r.local_path);
     if (hostPath === "/" || !hostPath.startsWith("/")) continue;
+    const v = parseVPath(hostPath);
+    if (isRemotePath(hostPath) && !v) continue;
     out.push({
       id: `lib:${r.id}`,
       kind: "library",
@@ -166,7 +178,9 @@ export async function loadRootDefs(exec: Exec): Promise<RootDef[]> {
       modifiable: r.management_mode === "managed",
       libraryRootId: r.id,
       instanceId: null,
-      sentinel: r.sentinel_file ?? DEFAULT_ROOT_SENTINEL,
+      sentinel: v ? null : (r.sentinel_file ?? DEFAULT_ROOT_SENTINEL),
+      storageId: v?.storageId ?? null,
+      storageName: v ? (storageName.get(v.storageId) ?? null) : null,
     });
   }
   for (const t of await loadInstances(exec, { enabledOnly: false })) {
@@ -184,9 +198,28 @@ export async function loadRootDefs(exec: Exec): Promise<RootDef[]> {
         libraryRootId: null,
         instanceId: t.inst.id,
         sentinel: null,
+        storageId: null,
+        storageName: null,
       });
     });
   }
+  // Alist 存储(对照 MP 存储切换):整个实例从根路径开始可浏览
+  for (const s of storages) {
+    if (!s.enabled) continue;
+    out.push({
+      id: `st:${s.id}`,
+      kind: "storage",
+      name: s.name,
+      hostPath: toVPath(s.id, s.root_path),
+      mediaKind: null,
+      modifiable: true,
+      libraryRootId: null,
+      instanceId: null,
+      sentinel: null,
+      storageId: s.id,
+      storageName: s.name,
+    });
+  }
   return out;
 }
 
@@ -211,6 +244,11 @@ const withTimeout = <T>(p: Promise<T>, ms: number, fallback: T): Promise<T> =>
 export async function probeRoot(def: RootDef, timeoutMs: number): Promise<RootHealthView> {
   const checkedAt = new Date();
   const run = async (): Promise<RootHealthView> => {
+    if (def.storageId) {
+      const h = await vcheckRoot(def.hostPath);
+      if (h.kind === "offline") return { health: "offline", reason: h.reason, checkedAt, real: null };
+      return { health: "healthy", reason: null, checkedAt, real: def.hostPath };
+    }
     if (def.sentinel) {
       const h = await checkRoot(def.hostPath, def.sentinel);
       if (h.kind === "offline") return { health: "offline", reason: h.reason, checkedAt, real: null };
@@ -283,6 +321,7 @@ export async function resolveIn(
   const def = opts.def ?? (await rootDef(d.ctx.db, rootId));
   const rootReal = opts.rootReal ?? (await onlineRoot(d, def));
   const rel = checkRel(relIn);
+  if (def.storageId) return resolveRemote(def, rootReal, rel, opts.mustExist !== false);
   if (rel === "") {
     const lst = await lstat(rootReal).catch(() => null);
     return { def, rootReal, rel, abs: rootReal, lst, isSymlink: false };
@@ -314,8 +353,42 @@ export async function resolveIn(
   return { def, rootReal, rel: relOf(rootReal, abs), abs, lst, isSymlink };
 }
 
+/** 远端根:没有符号链接,路径即 realpath;lst 是 vfs 的 stat(不存在为 null,连不上抛 root_unavailable) */
+async function resolveRemote(def: RootDef, rootReal: string, rel: string, mustExist: boolean): Promise<Resolved> {
+  const abs = rel === "" ? rootReal : join(rootReal, rel);
+  let lst: Resolved["lst"] = null;
+  try {
+    lst = (await vlstat(abs)) as unknown as Resolved["lst"];
+  } catch (e) {
+    if (errnoOf(e) !== "ENOENT") throw remoteFilesError(e, def);
+  }
+  if (!lst && mustExist) throw new FilesError("not_found", `不存在：${rel}`);
+  return { def, rootReal, rel, abs, lst, isSymlink: false };
+}
+
+/** 远端错误 → 业务错误(连不上 / 超时 → 503 根不可用;鉴权 → 403;冲突 → 409) */
+export function remoteFilesError(e: unknown, def?: RootDef): FilesError {
+  if (e instanceof FilesError) return e;
+  const code = errnoOf(e);
+  const msg = e instanceof Error ? e.message : String(e);
+  if (code === "ENOENT") return new FilesError("not_found", msg);
+  if (code === "EEXIST") return new FilesError("exists", msg);
+  if (code === "EACCES") return new FilesError("forbidden", msg);
+  return new FilesError("root_unavailable", `${def ? `存储 ${def.storageName ?? def.name} ` : ""}不可用：${msg}`);
+}
+
 /** 执行阶段复核(TOCTOU):再次 realpath,必须仍在根内 */
 export async function recheck(abs: string, rootReal: string): Promise<string> {
+  if (isRemotePath(abs)) {
+    try {
+      const r = await vrealpath(abs);
+      if (!within(r, rootReal)) throw new FilesError("path_escape", `执行时路径指向根外：${abs}`);
+      return r;
+    } catch (e) {
+      if (errnoOf(e) === "ENOENT") throw new FilesError("plan_stale", `源已不存在：${abs}`);
+      throw remoteFilesError(e);
+    }
+  }
   let r: string;
   try {
     r = await realpath(abs);
diff --git a/apps/server/src/modules/file-manager/download.ts b/apps/server/src/modules/file-manager/download.ts
index 8ba3dbb3..b9b30bf3 100644
--- a/apps/server/src/modules/file-manager/download.ts
+++ b/apps/server/src/modules/file-manager/download.ts
@@ -1,6 +1,7 @@
 import { basename, extname } from "node:path";
 import type { FilesDownloadQuery } from "@umt/contracts";
 import type { Principal } from "../../http/auth.ts";
+import { remote, remoteError } from "../../storage/vfs.ts";
 import { FilesError, type FmDeps, isAdminSession, recheck, resolveIn } from "./common.ts";
 import { audit } from "./ledger.ts";
 import { kindOfName } from "./list.ts";
@@ -55,6 +56,7 @@ export async function downloadFile(
   if (!ALLOWED.has(kind) && !pk)
     throw new FilesError("forbidden", `只能下载 NFO、字幕、图片、文本和 .torrent，此文件类型为 ${kind}`);
   const real = await recheck(r.abs, r.rootReal);
+  if (r.def.storageId) return downloadRemote(d, principal, q, r.rel, real, name, kind, pk);
   const file = await Deno.open(real, { read: true });
   let size: number;
   try {
@@ -86,3 +88,47 @@ export async function downloadFile(
     },
   });
 }
+
+/** Alist 文件:经服务端流式转发(不落本地盘,同一下载上限与类型限制;MP 是先下到临时目录再回传) */
+async function downloadRemote(
+  d: FmDeps,
+  principal: Principal | undefined,
+  q: FilesDownloadQuery,
+  rel: string,
+  abs: string,
+  name: string,
+  kind: string,
+  pk: ReturnType<typeof previewKindOf>,
+): Promise<Response> {
+  const { v, client } = await remote(abs);
+  let size: number;
+  let res: Response;
+  try {
+    const o = await client.get(v.remote);
+    if (o.isDir) throw new FilesError("bad_request", "只能下载文件，不能下载目录");
+    size = o.size;
+    if (size > d.options.downloadMaxBytes)
+      throw new FilesError(
+        "too_large",
+        `文件 ${size} 字节，超过下载上限 ${d.options.downloadMaxBytes}(FILES_DOWNLOAD_MAX_BYTES)`,
+      );
+    res = await client.openRead(v.remote);
+  } catch (e) {
+    if (e instanceof FilesError) throw e;
+    throw remoteError(e, abs);
+  }
+  const ext = extname(name).replace(/^\./, "").toLowerCase();
+  const inline = q.inline && (kind === "image" || pk === "image") && ext !== "svg";
+  await audit(d, principal, "download", { root: q.root, path: rel, size, inline });
+  return new Response(res.body, {
+    status: 200,
+    headers: {
+      "content-type": (ext !== "svg" && MIME[ext]) || "application/octet-stream",
+      ...(size ? { "content-length": String(size) } : {}),
+      "content-disposition": disposition(inline ? "inline" : "attachment", name),
+      "x-content-type-options": "nosniff",
+      "content-security-policy": "default-src 'none'; sandbox",
+      "cache-control": "private, no-store",
+    },
+  });
+}
diff --git a/apps/server/src/modules/file-manager/identify.ts b/apps/server/src/modules/file-manager/identify.ts
index c80e25db..186d4baf 100644
--- a/apps/server/src/modules/file-manager/identify.ts
+++ b/apps/server/src/modules/file-manager/identify.ts
@@ -1,5 +1,4 @@
 import { randomUUID } from "node:crypto";
-import { readdir, stat } from "node:fs/promises";
 import { join } from "node:path";
 import {
   EventType,
@@ -21,6 +20,7 @@ import {
 } from "@umt/domain";
 import { localIdentityCandidate } from "@umt/mapping";
 import type { Principal } from "../../http/auth.ts";
+import { vlstat as stat, vreaddirents } from "../../storage/vfs.ts";
 import { successfulOrganizeCounts } from "../acquisition-organize/services/organize-history.ts";
 import { EXTERNAL_INVOKE_TIMEOUT_MS, sharedInvokeLimiter } from "../agent/invoke-limits.ts";
 import { createEntityEpisodeMapper, type EntityEpisodeMapper } from "../sources-identity/service/episode-resolution.ts";
@@ -90,7 +90,7 @@ async function collectVideos(d: FmDeps, body: FilesIdentifyRequest): Promise<{ v
     const stack = [r.rel];
     while (stack.length > 0) {
       const rel = stack.shift()!;
-      const names = (await readdir(join(r.rootReal, rel), { withFileTypes: true }).catch(() => [])).sort((a, b) =>
+      const names = (await vreaddirents(join(r.rootReal, rel)).catch(() => [])).sort((a, b) =>
         a.name.localeCompare(b.name),
       );
       for (const n of names) {
diff --git a/apps/server/src/modules/file-manager/index.ts b/apps/server/src/modules/file-manager/index.ts
index b9b12a0c..45493fd8 100644
--- a/apps/server/src/modules/file-manager/index.ts
+++ b/apps/server/src/modules/file-manager/index.ts
@@ -3,6 +3,7 @@ import type { TmdbClient } from "@umt/adapters";
 import { FilesIdentifyRequest } from "@umt/contracts";
 import { defineTask } from "@umt/tasks";
 import { z } from "zod";
+import { configureStorage } from "../../storage/registry.ts";
 import type { AoOverrides } from "../acquisition-organize/index.ts";
 import { createPorts } from "../acquisition-organize/ports.ts";
 import { registerScheduledJob } from "../schedules/registry.ts";
@@ -57,10 +58,12 @@ export function createFileManagerModule(overrides: FmOverrides = {}): ServerModu
       return deps;
     },
     registerRoutes(app, ctx) {
+      configureStorage(ctx);
       registerFileRoutes(app, lazy(ctx));
       registerOrganizeSourceRoutes(app, lazy(ctx));
     },
     registerTasks(registry, ctx) {
+      configureStorage(ctx);
       registry.register(
         defineTask({
           name: "scanOrganizeSource",
diff --git a/apps/server/src/modules/file-manager/list.ts b/apps/server/src/modules/file-manager/list.ts
index 3452b90a..ad668c98 100644
--- a/apps/server/src/modules/file-manager/list.ts
+++ b/apps/server/src/modules/file-manager/list.ts
@@ -17,6 +17,8 @@ import type {
 } from "@umt/contracts";
 import { sql } from "@umt/db";
 import { fileKindOf } from "@umt/domain";
+import { storageEntry } from "../../storage/registry.ts";
+import { isRemotePath, vlstat, vreaddir, vreaddirStats, vrealpath } from "../../storage/vfs.ts";
 import { hostPathOf, loadInstances } from "../acquisition-organize/services/common.ts";
 import { hnrSatisfied } from "../acquisition-organize/services/retention.ts";
 import {
@@ -29,6 +31,7 @@ import {
   probeRoot,
   type RootDef,
   relOf,
+  remoteFilesError,
   resolveIn,
   within,
 } from "./common.ts";
@@ -43,7 +46,11 @@ export async function listRoots(d: FmDeps): Promise<{ items: FileRoot[] }> {
       const h = await probeRoot(def, d.options.healthTimeoutMs);
       let writable = false;
       let usage: FileRoot["usage"] = null;
-      if (h.real) {
+      if (h.real && def.storageId) {
+        writable = await isWritableTarget(def, h.real);
+        const u = await storageUsage(def.storageId, def.hostPath);
+        if (u) usage = { totalBytes: u.total, freeBytes: u.free };
+      } else if (h.real) {
         writable = await isWritableTarget(def, h.real);
         const du = await d.ao.ports.diskUsage(h.real).catch(() => null);
         if (du?.status === "ok") usage = { totalBytes: du.totalBytes, freeBytes: du.availableBytes };
@@ -59,6 +66,13 @@ export async function listRoots(d: FmDeps): Promise<{ items: FileRoot[] }> {
         checkedAt: h.checkedAt.toISOString(),
         healthReason: h.reason,
         usage,
+        storage: def.storageId
+          ? {
+              id: def.storageId,
+              name: def.storageName ?? def.name,
+              path: def.hostPath.replace(/^\/@alist\/[0-9a-f-]{36}/i, "") || "/",
+            }
+          : null,
         ...(def.kind === "download" && h.real && h.health !== "offline"
           ? await pendingOf(d, def.id, h.real)
           : { pendingCount: null, pendingPartial: false }),
@@ -68,6 +82,23 @@ export async function listRoots(d: FmDeps): Promise<{ items: FileRoot[] }> {
   return { items };
 }
 
+/** Alist 容量(拿不到为 null,不报错;缓存 5 分钟,避免每次列根都打 admin 接口) */
+const usageCache = new Map<string, { at: number; v: { total: number; free: number } | null }>();
+async function storageUsage(storageId: string, hostPath: string) {
+  const hit = usageCache.get(hostPath);
+  if (hit && Date.now() - hit.at < 5 * 60_000) return hit.v;
+  let v: { total: number; free: number } | null = null;
+  try {
+    const e = await storageEntry(storageId);
+    const remote = hostPath.replace(/^\/@alist\/[0-9a-f-]{36}/i, "") || "/";
+    v = await e.client.usage(remote);
+  } catch {
+    v = null;
+  }
+  usageCache.set(hostPath, { at: Date.now(), v });
+  return v;
+}
+
 // ── G6:下载目录待识别计数(缓存 5 分钟;文件变更事件使对应根失效) ──
 
 const PENDING_TTL_MS = 5 * 60_000;
@@ -121,6 +152,7 @@ async function canWrite(p: string): Promise<boolean> {
 }
 
 export async function isWritableTarget(def: RootDef, rootReal: string): Promise<boolean> {
+  if (def.storageId) return (def.kind === "library" || def.kind === "storage") && def.modifiable;
   return def.kind === "library" && def.modifiable && (await canWrite(rootReal));
 }
 
@@ -144,7 +176,7 @@ export function kindOfName(name: string): FileKindTag {
 async function rawOf(abs: string, rel: string, rootReal: string): Promise<RawEntry | null> {
   let st: Awaited<ReturnType<typeof lstat>>;
   try {
-    st = await lstat(abs);
+    st = (isRemotePath(abs) ? await vlstat(abs) : await lstat(abs)) as Awaited<ReturnType<typeof lstat>>;
   } catch (e) {
     if (isOfflineErr(e)) throw new FilesError("root_unavailable", `读取失败(${errnoOf(e)})`);
     return null; // 读取期间被删除
@@ -436,6 +468,7 @@ const matchFilter = (e: FileEntry, f: FileFilter) => {
 
 export async function listDir(d: FmDeps, q: FilesListQuery): Promise<FilesListResponse> {
   const r = await resolveIn(d, q.root, q.path);
+  if (r.def.storageId) return listRemoteDir(d, q, r);
   if (r.isSymlink || !r.lst?.isDirectory()) {
     const st = await stat(r.abs).catch(() => null);
     if (!st?.isDirectory()) throw new FilesError("bad_request", `不是目录：${r.rel || "/"}`);
@@ -463,13 +496,7 @@ export async function listDir(d: FmDeps, q: FilesListQuery): Promise<FilesListRe
     throw new FilesError("bad_request", `读取目录失败：${errnoOf(e) ?? String(e)}`);
   }
 
-  let pool = names;
-  if (q.q) {
-    const needle = q.q;
-    const re = /[*?]/.test(needle) ? globToRegex(needle) : null;
-    const lower = needle.toLowerCase();
-    pool = names.filter((n) => (re ? re.test(n) : n.toLowerCase().includes(lower)));
-  }
+  const pool = filterNames(names, q.q);
   const raws: RawEntry[] = [];
   for (let i = 0; i < pool.length; i += 64) {
     const batch = await Promise.all(
@@ -477,6 +504,66 @@ export async function listDir(d: FmDeps, q: FilesListQuery): Promise<FilesListRe
     );
     for (const b of batch) if (b) raws.push(b);
   }
+  return finishList(d, q, r, raws, dirMtime, cursor, truncated);
+}
+
+function filterNames(names: string[], needle: string | undefined): string[] {
+  if (!needle) return names;
+  const re = /[*?]/.test(needle) ? globToRegex(needle) : null;
+  const lower = needle.toLowerCase();
+  return names.filter((n) => (re ? re.test(n) : n.toLowerCase().includes(lower)));
+}
+
+/** Alist 目录:一次 list 拿全(自动翻页),refresh 只在用户点刷新时带(§9-8);不做递归目录摘要(避免逐目录打网盘接口) */
+async function listRemoteDir(
+  d: FmDeps,
+  q: FilesListQuery,
+  r: Awaited<ReturnType<typeof resolveIn>>,
+): Promise<FilesListResponse> {
+  if (!r.lst?.isDirectory()) throw new FilesError("bad_request", `不是目录：${r.rel || "/"}`);
+  const cursor = decodeCursor(q.cursor);
+  const dirMtime = Number(r.lst.mtimeMs) || 0;
+  let items: Awaited<ReturnType<typeof vreaddirStats>>;
+  try {
+    items = await vreaddirStats(r.abs, { refresh: q.refresh === true });
+  } catch (e) {
+    throw remoteFilesError(e, r.def);
+  }
+  const visible = items.filter((it) => q.hidden || !isHidden(it.name, r.def));
+  const truncated = visible.length > d.options.listMaxEntries;
+  const keep = new Set(
+    filterNames(
+      visible.slice(0, d.options.listMaxEntries).map((it) => it.name),
+      q.q,
+    ),
+  );
+  const raws: RawEntry[] = visible
+    .filter((it) => keep.has(it.name))
+    .map((it) => {
+      const abs = join(r.abs, it.name);
+      const dir = it.stats.isDirectory();
+      return {
+        name: it.name,
+        rel: relOf(r.rootReal, abs),
+        abs,
+        type: dir ? "dir" : "file",
+        size: dir ? 0 : Number(it.stats.size),
+        mtimeMs: Number(it.stats.mtimeMs) || null,
+        escape: false,
+      } satisfies RawEntry;
+    });
+  return finishList(d, q, r, raws, dirMtime, cursor, truncated);
+}
+
+async function finishList(
+  d: FmDeps,
+  q: FilesListQuery,
+  r: Awaited<ReturnType<typeof resolveIn>>,
+  raws: RawEntry[],
+  dirMtime: number,
+  cursor: { o: number; m: number } | null,
+  truncated: boolean,
+): Promise<FilesListResponse> {
   const downloads = await managedDownloads(d);
   let entries = await annotate(d, r.def, raws, downloads);
   if (q.filter?.length) entries = entries.filter((e) => q.filter!.some((f) => matchFilter(e, f)));
@@ -512,7 +599,7 @@ export async function listDir(d: FmDeps, q: FilesListQuery): Promise<FilesListRe
 /** 当前页目录的懒摘要:递归数视频(上限 dirSummaryMax 项)+ 一次查询数已登记 */
 async function fillDirSummaries(d: FmDeps, def: RootDef, rootReal: string, page: FileEntry[]) {
   const dirs = page.filter((e) => e.type === "dir");
-  if (dirs.length === 0) return;
+  if (dirs.length === 0 || def.storageId) return;
   const reg = new Map<string, number>();
   if (def.kind === "library") {
     const likes = dirs.map((e) => `${e.path.replace(/[\\%_]/g, (m) => `\\${m}`)}/%`);
@@ -558,7 +645,7 @@ export async function sidecarsOf(abs: string): Promise<string[]> {
   const name = basename(abs);
   const stem = name.slice(0, name.length - extname(name).length);
   if (!stem) return [];
-  const names = await readdir(dirname(abs)).catch(() => [] as string[]);
+  const names = await vreaddir(dirname(abs)).catch(() => [] as string[]);
   return names.filter((n) => {
     if (n === name) return false;
     if (!(n.startsWith(`${stem}.`) || n.startsWith(`${stem}-`))) return false;
@@ -602,7 +689,7 @@ export async function statEntry(d: FmDeps, root: string, path: string): Promise<
   const [entry] = await annotate(d, r.def, [raw]);
   if (entry!.type === "dir") await fillDirSummaries(d, r.def, r.rootReal, [entry!]);
   const st = r.lst!;
-  const real = await realpath(r.abs).catch(() => r.abs);
+  const real = await vrealpath(r.abs).catch(() => r.abs);
   const nlink = Number(st.nlink);
   return {
     entry: entry!,
diff --git a/apps/server/src/modules/file-manager/mutate.ts b/apps/server/src/modules/file-manager/mutate.ts
index c764ef05..931d50cd 100644
--- a/apps/server/src/modules/file-manager/mutate.ts
+++ b/apps/server/src/modules/file-manager/mutate.ts
@@ -1,9 +1,9 @@
 import { lstat, mkdir } from "node:fs/promises";
 import { basename, dirname, extname, join } from "node:path";
-import { moveSafe } from "@umt/adapters";
 import type { FilesMkdirRequest, FilesMkdirResult, FilesRenameRequest, FilesRenameResult } from "@umt/contracts";
 import { sanitizeSegment } from "@umt/domain";
 import type { Principal } from "../../http/auth.ts";
+import { isRemotePath, vexists, vlstat, vmkdirp, vrenameNoClobber } from "../../storage/vfs.ts";
 import { actorOfP, errMessage, errnoOf, FilesError, type FmDeps, recheck, relOf, resolveIn } from "./common.ts";
 import { audit, filesChanged } from "./ledger.ts";
 import { downloadsFor, isWritableTarget, kindOfName, managedDownloads, sidecarsOf } from "./list.ts";
@@ -31,7 +31,10 @@ export async function mkdirIn(
   await recheck(r.abs, r.rootReal);
   const abs = join(r.abs, body.name);
   try {
-    await mkdir(abs);
+    if (r.def.storageId) {
+      if (await vexists(abs)) throw Object.assign(new Error("exists"), { code: "EEXIST" });
+      await vmkdirp(abs);
+    } else await mkdir(abs);
   } catch (e) {
     if (errnoOf(e) === "EEXIST") throw new FilesError("exists", `已存在：${body.name}`);
     throw new FilesError("bad_request", `创建目录失败：${errMessage(e)}`);
@@ -88,7 +91,9 @@ export async function renameEntry(
   // 不覆盖:任一目标已存在 → 409,原文件不动
   const taken: string[] = [];
   for (const p of pairs) {
-    const st = await lstat(p.toAbs).catch((e) => (errnoOf(e) === "ENOENT" ? null : e));
+    const st = await (isRemotePath(p.toAbs) ? vlstat(p.toAbs) : lstat(p.toAbs)).catch((e) =>
+      errnoOf(e) === "ENOENT" ? null : e,
+    );
     if (st) taken.push(p.to);
   }
   if (taken.length > 0) throw new FilesError("exists", `目标已存在，不覆盖：${taken.join(", ")}`);
@@ -116,17 +121,19 @@ export async function renameEntry(
   // 执行:逐个 no-clobber 改名;任一失败回滚已改的
   const done: Pair[] = [];
   const rollback = async () => {
-    for (const p of done.reverse()) await moveSafe(p.toAbs, p.fromAbs).catch(() => undefined);
+    for (const p of done.reverse()) await vrenameNoClobber(p.toAbs, p.fromAbs).catch(() => undefined);
   };
   for (const p of pairs) {
     try {
       await recheck(p.fromAbs, r.rootReal);
-      const before = await lstat(p.fromAbs);
-      const res = await moveSafe(p.fromAbs, p.toAbs);
+      const remote = isRemotePath(p.fromAbs);
+      const before = remote ? null : await lstat(p.fromAbs);
+      const res = await vrenameNoClobber(p.fromAbs, p.toAbs);
       if (res.status === "exists") throw new FilesError("exists", `目标已存在，不覆盖：${p.to}`);
       if (res.status !== "moved") throw new FilesError("bad_request", `重命名失败(${res.status}): ${p.from}`);
-      const after = await lstat(p.toAbs);
-      if (after.ino !== before.ino || after.dev !== before.dev)
+      // 远端没有 inode:Alist 改名接口成功即算成功(同 MP)
+      const after = remote ? null : await lstat(p.toAbs);
+      if (before && after && (after.ino !== before.ino || after.dev !== before.dev))
         throw new FilesError("bad_request", `重命名后 inode 不一致，已中止：${p.to}`);
       done.push(p);
     } catch (e) {
diff --git a/apps/server/src/modules/file-manager/organize.ts b/apps/server/src/modules/file-manager/organize.ts
index c12896cb..6a63248e 100644
--- a/apps/server/src/modules/file-manager/organize.ts
+++ b/apps/server/src/modules/file-manager/organize.ts
@@ -1,9 +1,9 @@
 import { randomUUID } from "node:crypto";
-import { stat } from "node:fs/promises";
 import { join, relative } from "node:path";
 import type { FilesOrganizeGroup, FilesOrganizeRequest, FilesOrganizeResult } from "@umt/contracts";
 import type { Principal } from "../../http/auth.ts";
 import { ApiException } from "../../http/errors.ts";
+import { vlstat as stat } from "../../storage/vfs.ts";
 import { ensureTaskRow, markTask } from "../acquisition-organize/services/common.ts";
 import { type FileOverrideInput, type FrozenPlan, planImport } from "../acquisition-organize/services/organize.ts";
 import {
diff --git a/apps/server/src/modules/file-manager/preview.ts b/apps/server/src/modules/file-manager/preview.ts
index 459640d2..2e084d1c 100644
--- a/apps/server/src/modules/file-manager/preview.ts
+++ b/apps/server/src/modules/file-manager/preview.ts
@@ -4,6 +4,7 @@ import type { FilePreview, FilesPreviewQuery } from "@umt/contracts";
 import type { Principal } from "../../http/auth.ts";
 import { runSandbox, SandboxError } from "../../sandbox/client.ts";
 import { b64encode } from "../../sandbox/jobs.ts";
+import { isRemotePath, remote, remoteError } from "../../storage/vfs.ts";
 import { FilesError, type FmDeps, isAdminSession, recheck, resolveIn } from "./common.ts";
 import { BAD_TORRENT } from "./preview-build.ts";
 import { extOf, previewKindOf } from "./preview-parse.ts";
@@ -16,6 +17,20 @@ const IMAGE_HEAD = 512 * 1024;
 const TORRENT_MAX = 4 * 1024 * 1024;
 
 async function readHead(abs: string, max: number): Promise<{ buf: Uint8Array; size: number }> {
+  if (isRemotePath(abs)) {
+    // Alist:按 Range 只取头部
+    const { v, client } = await remote(abs);
+    try {
+      const o = await client.get(v.remote);
+      if (o.isDir) throw new FilesError("bad_request", "不是普通文件");
+      const res = await client.openRead(v.remote, { range: `bytes=0-${Math.max(0, max - 1)}` });
+      const buf = new Uint8Array(await res.arrayBuffer()).subarray(0, max);
+      return { buf, size: o.size };
+    } catch (e) {
+      if (e instanceof FilesError) throw e;
+      throw remoteError(e, abs);
+    }
+  }
   const fh = await open(abs, "r");
   try {
     const st = await fh.stat();
diff --git a/apps/server/src/modules/file-manager/probe.ts b/apps/server/src/modules/file-manager/probe.ts
index b9e04bce..35997881 100644
--- a/apps/server/src/modules/file-manager/probe.ts
+++ b/apps/server/src/modules/file-manager/probe.ts
@@ -1,5 +1,5 @@
 import { createHash, randomUUID } from "node:crypto";
-import { mkdir, readFile, stat, writeFile } from "node:fs/promises";
+import { mkdir, readFile, writeFile } from "node:fs/promises";
 import { join, resolve } from "node:path";
 import type { ProbeResult } from "@umt/adapters";
 import type {
@@ -11,6 +11,7 @@ import type {
 } from "@umt/contracts";
 import { sql } from "@umt/db";
 import type { Principal } from "../../http/auth.ts";
+import { vlstat } from "../../storage/vfs.ts";
 import { FilesError, type FmDeps, jsonb, resolveIn } from "./common.ts";
 import { audit } from "./ledger.ts";
 import { kindOfName, mediaSummary } from "./list.ts";
@@ -54,7 +55,7 @@ export async function probeFiles(d: FmDeps, body: FilesProbeRequest): Promise<Fi
       });
       continue;
     }
-    const st = await stat(r.abs);
+    const st = await vlstat(r.abs);
     const key = createHash("sha1").update(`${r.abs}|${st.size}|${st.mtimeMs}`).digest("hex");
     const cacheFile = join(cacheDir, `${key}.json`);
     let result: ProbeResult | null = null;
diff --git a/apps/server/src/modules/file-manager/record-delete.ts b/apps/server/src/modules/file-manager/record-delete.ts
index 35b03724..2de26feb 100644
--- a/apps/server/src/modules/file-manager/record-delete.ts
+++ b/apps/server/src/modules/file-manager/record-delete.ts
@@ -1,5 +1,4 @@
 import { randomUUID } from "node:crypto";
-import { lstat } from "node:fs/promises";
 import { basename, isAbsolute, join } from "node:path";
 import type {
   FileRef,
@@ -9,6 +8,7 @@ import type {
   OrganizationDeleteResult,
 } from "@umt/contracts";
 import type { Principal } from "../../http/auth.ts";
+import { vlstat as lstat } from "../../storage/vfs.ts";
 import { FilesError, type FmDeps, isAdmin, loadRootDefs, type RootDef, within } from "./common.ts";
 import { audit } from "./ledger.ts";
 import { deleteFiles } from "./trash.ts";
diff --git a/apps/server/src/modules/file-manager/routes.ts b/apps/server/src/modules/file-manager/routes.ts
index b487c1e4..68bfacd2 100644
--- a/apps/server/src/modules/file-manager/routes.ts
+++ b/apps/server/src/modules/file-manager/routes.ts
@@ -23,6 +23,7 @@ import { suggestName } from "./suggest-name.ts";
 import { transfer } from "./transfer.ts";
 import { deleteFiles, listTrash, purgeTrash, restoreTrash } from "./trash.ts";
 import { recordSources, treeOf } from "./tree.ts";
+import { uploadFile } from "./upload.ts";
 
 // /files 路由:scope 由 contracts 端点定义(读 organize.read / 写 organize.execute),处理器内再按授权矩阵细分。
 // FilesError → 信封 + 对应状态(根离线 503,message 以 `<reason>: ` 开头)。
@@ -120,6 +121,13 @@ export function registerFileRoutes(app: ModuleApp, d: FmDeps) {
   mount(app, F.probe, async (_c, { body }) => probeFiles(d, body));
   mount(app, F.records, async (_c, { query }) => findRecords(d, query));
   mount(app, F.download, async (c, { query }) => downloadFile(d, c.get("principal"), query), true);
+  // 上传:请求体是文件原始字节(不走 JSON 校验),query 照常校验;幂等键防重放
+  mount(app, F.upload, async (c, { query }) => {
+    const { idempotencyKey, ...rest } = query as { idempotencyKey: string } & Record<string, unknown>;
+    return idempotent(d, c.get("principal"), "upload", idempotencyKey, rest, () =>
+      uploadFile(d, c.get("principal"), query, c.req.raw.body, c.req.raw.signal),
+    );
+  });
   mount(app, F.preview, async (c, { query }) => previewFile(d, c.get("principal"), query));
   // W9-H 文件管理 v2
   mount(app, F.entityFromCandidate, async (c, { body }) => entityFromCandidate(d, c.get("principal"), body));
diff --git a/apps/server/src/modules/file-manager/transfer.ts b/apps/server/src/modules/file-manager/transfer.ts
index 72816f78..04a8826a 100644
--- a/apps/server/src/modules/file-manager/transfer.ts
+++ b/apps/server/src/modules/file-manager/transfer.ts
@@ -1,7 +1,7 @@
-import { lstat, readdir, stat } from "node:fs/promises";
 import { basename, dirname, join } from "node:path";
 import type { FilePlanPair, FilesMoveRequest, FilesTransferResult, OrganizationStatus } from "@umt/contracts";
 import type { Principal } from "../../http/auth.ts";
+import { isRemotePath, vlstat as lstat, vreaddir as readdir } from "../../storage/vfs.ts";
 import { ensureTaskRow, markTask } from "../acquisition-organize/services/common.ts";
 import { planImport } from "../acquisition-organize/services/organize.ts";
 import { authorizeMoveEntities, PathGuardError, sourceGuard } from "../acquisition-organize/services/organize-guard.ts";
@@ -94,8 +94,10 @@ export async function transfer(
   const mode = body.mode;
   const t = await resolveIn(d, body.target.root, body.target.path);
   if (!t.lst?.isDirectory() || t.isSymlink) throw new FilesError("bad_request", "目标必须是已存在的目录");
-  if (!t.def.libraryRootId || !(await isWritableTarget(t.def, t.rootReal)))
-    throw new FilesError("not_writable", `目标根 ${t.def.name} 不可写，只能选 可写的媒体库目录`);
+  // 目标:可写的媒体库目录(本地或 Alist),或 Alist 存储根(文件管理的 st: 根,对照 MP 存储内移动 / 复制)
+  const storageTarget = t.def.kind === "storage";
+  if ((!t.def.libraryRootId && !storageTarget) || !(await isWritableTarget(t.def, t.rootReal)))
+    throw new FilesError("not_writable", `目标根 ${t.def.name} 不可写，只能选 可写的媒体库目录或 Alist 存储`);
 
   const sources: Resolved[] = [];
   for (const it of body.items) {
@@ -118,7 +120,7 @@ export async function transfer(
       for (const h of downloadsFor(downloads, s.abs))
         hnrBlocks.push({ taskId: h.taskId, path: s.rel, hnr: h.hnr, status: h.status });
 
-  const targetDev = Number((await stat(t.abs)).dev);
+  const targetDev = Number((await lstat(t.abs)).dev);
   const spec: TransferSpec = {
     items: sources.map((s, i) => {
       const dst = join(t.abs, names[i]!);
@@ -164,6 +166,11 @@ export async function transfer(
       ? (await relocatePreview(d.ctx.db, s.def.libraryRootId, s.rel, snaps[i]!.isDir)).locations > 0
       : false;
     const crossDevice = Number((await lstat(s.abs)).dev) !== targetDev;
+    if (storageTarget && mode === "move" && registered)
+      throw new FilesError(
+        "needs_retire",
+        `${s.rel} 含已整理的文件，只能移动到媒体库目录；要放到 Alist 存储请用复制或先从媒体库移除`,
+      );
     pairs.push({
       source: { root: body.items[i]!.root, path: s.rel },
       target: { root: body.target.root, path: relOf(t.rootReal, dst) },
@@ -175,7 +182,7 @@ export async function transfer(
     });
     if (!(mode === "move" && !crossDevice)) needBytes += snaps[i]!.size;
   }
-  const du = await d.ao.ports.diskUsage(t.abs).catch(() => null);
+  const du = isRemotePath(t.abs) ? null : await d.ao.ports.diskUsage(t.abs).catch(() => null);
   const freeBytes = du?.status === "ok" ? du.availableBytes : null;
   const spaceOk = freeBytes === null ? true : needBytes <= freeBytes;
   const truncated = snaps.some((s) => s.truncated) || planned.truncated === true;
@@ -184,10 +191,14 @@ export async function transfer(
   const request = {
     sourcePaths: sources.map((s) => s.abs),
     action: mode,
-    targetLibraryRootId: t.def.libraryRootId,
+    ...(t.def.libraryRootId ? { targetLibraryRootId: t.def.libraryRootId } : {}),
   };
   const allowCross = (await d.ctx.settings.get("organize")).allowCrossVolumeMove;
-  const crossBlocked = mode === "move" && !allowCross && pairs.some((p) => p.crossDevice);
+  // 跨卷开关只管本地 ↔ 本地;涉及 Alist 的移动一律「传输成功 → 删源」(同 MP)
+  const crossBlocked =
+    mode === "move" &&
+    !allowCross &&
+    pairs.some((p, i) => p.crossDevice && !isRemotePath(sources[i]!.abs) && !isRemotePath(t.abs));
   const warnings: string[] = [];
   if (crossBlocked) warnings.push("未开启跨卷移动，执行会失败。改用复制，或在 设置 → 整理 中开启");
   if (conflictSrc.size > 0) warnings.push(`${conflictSrc.size} 个文件在目标已存在，不覆盖，执行时记为失败`);
diff --git a/apps/server/src/modules/file-manager/trash.ts b/apps/server/src/modules/file-manager/trash.ts
index d71ea7f7..e3d30633 100644
--- a/apps/server/src/modules/file-manager/trash.ts
+++ b/apps/server/src/modules/file-manager/trash.ts
@@ -16,6 +16,8 @@ import type {
 } from "@umt/contracts";
 import { sql, type TrashItemRow } from "@umt/db";
 import type { Principal } from "../../http/auth.ts";
+import { isRemotePath, vlstat, vmkdirp, vreaddirStats, vremove, vrenameNoClobber } from "../../storage/vfs.ts";
+import { parseVPath, toVPath } from "../../storage/vpath.ts";
 import { upsertDecision } from "../acquisition-organize/services/common.ts";
 import { fsRuntime } from "../acquisition-organize/services/organize.ts";
 import {
@@ -47,6 +49,7 @@ const likePrefix = (rel: string) => `${rel.replace(/[\\%_]/g, (m) => `\\${m}`)}/
 const day = (t: Date) => t.toISOString().slice(0, 10).replace(/-/g, "");
 
 async function sizeOf(abs: string, cap = 200_000): Promise<{ size: number; files: string[] }> {
+  if (isRemotePath(abs)) return remoteSizeOf(abs, cap);
   const st = await lstat(abs);
   if (!st.isDirectory()) return { size: Number(st.size), files: [""] };
   let size = 0;
@@ -68,6 +71,39 @@ async function sizeOf(abs: string, cap = 200_000): Promise<{ size: number; files
   return { size, files };
 }
 
+/** 远端:按目录 list(每个子目录一次请求) */
+async function remoteSizeOf(abs: string, cap: number): Promise<{ size: number; files: string[] }> {
+  const st = await vlstat(abs);
+  if (!st.isDirectory()) return { size: Number(st.size), files: [""] };
+  let size = 0;
+  const files: string[] = [];
+  const walk = async (dir: string, prefix: string) => {
+    for (const it of await vreaddirStats(dir)) {
+      if (files.length >= cap) return;
+      const rel = prefix ? `${prefix}/${it.name}` : it.name;
+      if (it.stats.isDirectory()) await walk(join(dir, it.name), rel);
+      else {
+        size += Number(it.stats.size);
+        files.push(rel);
+      }
+    }
+  };
+  await walk(abs, "");
+  return { size, files };
+}
+
+/**
+ * 回收站所在目录:本地 = <根>/.umt-trash;远端同布局,用 Alist 同驱动 move(立即完成)。
+ * 远端根是 Alist 的 "/"(各挂载的上一级,不能建目录)时放进该项所在挂载的 .umt-trash。
+ */
+export function trashBase(rootReal: string, abs: string): string {
+  const v = parseVPath(rootReal);
+  if (v?.remote !== "/") return rootReal;
+  const a = parseVPath(abs);
+  const mount = a?.remote.split("/").filter(Boolean)[0];
+  return mount ? toVPath(v.storageId, `/${mount}`) : rootReal;
+}
+
 interface CheckCtx {
   abs: string | null;
   rootReal: string | null;
@@ -234,7 +270,8 @@ export async function deleteFiles(
       await recheck(abs, ctx.rootReal!);
       let where: string | null = null;
       if (body.mode === "permanent") {
-        await rm(abs, { recursive: true, force: false });
+        if (isRemotePath(abs)) await vremove(abs);
+        else await rm(abs, { recursive: true, force: false });
         deleted.push(check.path);
       } else {
         const row = await moveToTrash(d, principal, check, ctx, expiresAt);
@@ -379,6 +416,16 @@ async function moveToTrash(
   const abs = ctx.abs!;
   const id = randomUUID();
   const stamp = day(d.ao.ports.now());
+  if (isRemotePath(abs)) {
+    // Alist:同存储 move 进 <根>/.umt-trash(MP 无回收站;Alist 驱动自己的回收站不依赖)
+    const base = trashBase(ctx.rootReal!, abs);
+    const rel = base === ctx.rootReal ? check.path : relOfRoot(base, abs);
+    const trashPath = join(base, TRASH_DIR, stamp, id, rel);
+    await vmkdirp(dirname(trashPath));
+    const r = await vrenameNoClobber(abs, trashPath);
+    if (r.status !== "moved") throw new FilesError("exists", `移入回收站失败(${r.status})：${trashPath}`);
+    return insertTrashRow(d, principal, check, ctx, { id, rootHost: base, trashPath, expiresAt });
+  }
   let trashPath = join(ctx.rootReal!, TRASH_DIR, stamp, id, check.path);
   let moved = false;
   try {
@@ -404,13 +451,24 @@ async function moveToTrash(
     await copyTree(d, abs, trashPath, files);
     await rm(abs, { recursive: true });
   }
+  return insertTrashRow(d, principal, check, ctx, { id, rootHost: ctx.rootReal!, trashPath, expiresAt });
+}
+
+function insertTrashRow(
+  d: FmDeps,
+  principal: Principal | undefined,
+  check: FileDeleteCheck,
+  ctx: CheckCtx,
+  x: { id: string; rootHost: string; trashPath: string; expiresAt: Date },
+): Promise<TrashItemRow> {
+  const { id, trashPath, expiresAt } = x;
   return d.ctx.db
     .insertInto("trash_item")
     .values({
       id,
       root_id: check.root,
       library_root_id: ctx.libraryRootId,
-      root_host_path: ctx.rootReal!,
+      root_host_path: x.rootHost,
       original_path: check.path,
       trash_path: trashPath,
       is_dir: check.isDir,
@@ -477,6 +535,11 @@ function trashPathSafe(d: FmDeps, row: TrashItemRow): boolean {
  */
 export async function mkdirWithin(rootReal: string, rel: string): Promise<void> {
   if (rel === "" || rel === ".") return;
+  if (isRemotePath(rootReal)) {
+    if (rel.split("/").includes("..")) throw new FilesError("path_escape", `路径含 ..: ${rel}`);
+    await vmkdirp(join(rootReal, rel));
+    return;
+  }
   let cur = rootReal;
   for (const seg of rel.split("/")) {
     if (seg === "" || seg === ".") continue;
@@ -494,6 +557,13 @@ export async function mkdirWithin(rootReal: string, rel: string): Promise<void>
   }
 }
 const relOfRoot = (root: string, p: string) => (p === root ? "" : p.slice(root.length + 1));
+const sameStorageOf = (a: string, b: string) => parseVPath(a)?.storageId === parseVPath(b)?.storageId;
+/** <…>/.umt-trash/<yyyymmdd>/<uuid>:回收站路径里 uuid 那一级 */
+function trashUuidDir(row: TrashItemRow): string | null {
+  const segs = row.trash_path.split("/");
+  const i = segs.indexOf(row.id);
+  return i > 0 ? segs.slice(0, i + 1).join("/") : null;
+}
 
 export async function restoreTrash(
   d: FmDeps,
@@ -537,8 +607,14 @@ export async function restoreTrash(
         );
         dst = parent.abs;
       }
-      if (await lstat(dst).catch(() => null)) throw new FilesError("exists", "原位置已被占用，可选择「还原到…」");
-      const r = await moveSafe(row.trash_path, dst);
+      if (await (isRemotePath(dst) ? vlstat(dst) : lstat(dst)).catch(() => null))
+        throw new FilesError("exists", "原位置已被占用，可选择「还原到…」");
+      if (
+        isRemotePath(dst) !== isRemotePath(row.trash_path) ||
+        (isRemotePath(dst) && !sameStorageOf(dst, row.trash_path))
+      )
+        throw new FilesError("bad_request", "回收站里的项只能还原到它原来所在的存储");
+      const r = await vrenameNoClobber(row.trash_path, dst);
       if (r.status === "exists") throw new FilesError("exists", "原位置已被占用");
       if (r.status === "exdev") {
         // 跨卷还原:与跨卷进回收站同一上限(FILES_TRASH_CROSS_MAX_BYTES),复制经 fsproxy,核验后删回收站副本
@@ -601,10 +677,17 @@ export async function purgeTrash(
   for (const row of rows) {
     try {
       if (!trashPathSafe(d, row)) throw new FilesError("path_escape", "回收站路径异常，拒绝清除");
-      await rm(row.trash_path, { recursive: true, force: true });
       // 顺带清掉空的 <uuid>/<yyyymmdd> 目录
-      const uuidDir = row.trash_path.slice(0, row.trash_path.length - row.original_path.length - 1);
-      await rm(uuidDir, { recursive: true, force: true }).catch(() => undefined);
+      const uuidDir = trashUuidDir(row);
+      if (isRemotePath(row.trash_path)) {
+        await vremove(row.trash_path).catch((e) => {
+          if (errnoOf(e) !== "ENOENT") throw e;
+        });
+        if (uuidDir) await vremove(uuidDir).catch(() => undefined);
+      } else {
+        await rm(row.trash_path, { recursive: true, force: true });
+        if (uuidDir) await rm(uuidDir, { recursive: true, force: true }).catch(() => undefined);
+      }
       const gone = await d.ctx.db.deleteFrom("trash_item").where("id", "=", row.id).returning("id").executeTakeFirst();
       if (gone) purged.push(row.id);
     } catch (e) {
diff --git a/apps/server/src/modules/file-manager/tree.ts b/apps/server/src/modules/file-manager/tree.ts
index a521639d..1044ae9e 100644
--- a/apps/server/src/modules/file-manager/tree.ts
+++ b/apps/server/src/modules/file-manager/tree.ts
@@ -1,4 +1,3 @@
-import { lstat, readdir } from "node:fs/promises";
 import { join } from "node:path";
 import type {
   FileRootId,
@@ -8,6 +7,7 @@ import type {
   OrganizationStatus,
 } from "@umt/contracts";
 import { sql } from "@umt/db";
+import { isRemotePath, vlstat as lstat, vreaddirents as readdirents } from "../../storage/vfs.ts";
 import { FilesError, type FmDeps, isTempName, loadRootDefs, resolveIn, within } from "./common.ts";
 import { kindOfName } from "./list.ts";
 
@@ -20,7 +20,8 @@ const hiddenName = (n: string) => n.startsWith(".") || isTempName(n);
 export async function treeOf(d: FmDeps, q: FilesTreeQuery): Promise<FilesTreeResult> {
   const r = await resolveIn(d, q.root, q.path);
   if (!r.lst?.isDirectory() || r.isSymlink) throw new FilesError("bad_request", `不是目录：${r.rel || "/"}`);
-  const names = await readdir(r.abs, { withFileTypes: true });
+  const remote = isRemotePath(r.abs);
+  const names = await readdirents(r.abs);
   const subdirs = names
     .filter((n) => n.isDirectory() && !hiddenName(n.name))
     .map((n) => n.name)
@@ -30,7 +31,9 @@ export async function treeOf(d: FmDeps, q: FilesTreeQuery): Promise<FilesTreeRes
   const dirs = await Promise.all(
     subdirs.slice(0, max).map(async (name) => {
       const path = r.rel ? `${r.rel}/${name}` : name;
-      const kids = await readdir(join(r.abs, name), { withFileTypes: true }).catch(() => []);
+      // Alist:不逐个子目录再列一遍(避免 N 次网盘请求),按「可能有下级」展示,展开时再列
+      if (remote) return { name, path, hasChildren: true };
+      const kids = await readdirents(join(r.abs, name)).catch(() => []);
       return { name, path, hasChildren: kids.some((k) => k.isDirectory() && !hiddenName(k.name)) };
     }),
   );
@@ -39,10 +42,15 @@ export async function treeOf(d: FmDeps, q: FilesTreeQuery): Promise<FilesTreeRes
   let seen = 0;
   let videoCount = 0;
   let partial = false;
-  const stack = [r.abs];
+  // Alist:只数当前目录这一层(不递归打网盘接口),结果标为不完整
+  if (remote) {
+    videoCount = names.filter((n) => n.isFile() && kindOfName(n.name) === "video").length;
+    partial = names.some((n) => n.isDirectory());
+  }
+  const stack = remote ? [] : [r.abs];
   while (stack.length > 0 && !partial) {
     const dir = stack.pop()!;
-    for (const n of await readdir(dir, { withFileTypes: true }).catch(() => [])) {
+    for (const n of await readdirents(dir).catch(() => [])) {
       if (++seen > d.options.dirSummaryMax) {
         partial = true;
         break;
diff --git a/apps/server/src/modules/file-manager/upload.ts b/apps/server/src/modules/file-manager/upload.ts
new file mode 100644
index 00000000..43f6eefb
--- /dev/null
+++ b/apps/server/src/modules/file-manager/upload.ts
@@ -0,0 +1,83 @@
+import { randomUUID } from "node:crypto";
+import { mkdir, open, rm } from "node:fs/promises";
+import { join } from "node:path";
+import { commitNoClobber, partialPathFor } from "@umt/adapters";
+import type { FilesUploadQuery, FilesUploadResult } from "@umt/contracts";
+import { sanitizeSegment } from "@umt/domain";
+import type { Principal } from "../../http/auth.ts";
+import { relayDir, remote, remoteError, vexists } from "../../storage/vfs.ts";
+import { errnoOf, FilesError, type FmDeps, recheck, relOf, resolveIn } from "./common.ts";
+import { audit, filesChanged } from "./ledger.ts";
+import { isWritableTarget } from "./list.ts";
+
+// PUT /files/upload(docs/design/storage-alist.md §4):请求体是文件字节,放进 {root, path} 目录,同名不覆盖。
+// Alist 根:先流式写本机临时文件,再按 §2.6 上传(临时名 → 改名,成功判定同 MP);本地根:同目录 partial → 不覆盖改名。
+
+async function spool(body: ReadableStream<Uint8Array>, file: string, signal?: AbortSignal): Promise<number> {
+  const fh = await open(file, "w");
+  let n = 0;
+  try {
+    const reader = body.getReader();
+    for (;;) {
+      signal?.throwIfAborted();
+      const { value, done } = await reader.read();
+      if (done) break;
+      await fh.write(value);
+      n += value.length;
+    }
+  } finally {
+    await fh.close();
+  }
+  return n;
+}
+
+export async function uploadFile(
+  d: FmDeps,
+  principal: Principal | undefined,
+  q: FilesUploadQuery,
+  body: ReadableStream<Uint8Array> | null,
+  signal?: AbortSignal,
+): Promise<FilesUploadResult> {
+  if (!body) throw new FilesError("bad_request", "请求体为空");
+  const r = await resolveIn(d, q.root, q.path);
+  if (!r.lst?.isDirectory() || r.isSymlink) throw new FilesError("bad_request", `不是目录：${r.rel || "/"}`);
+  if (!(await isWritableTarget(r.def, r.rootReal))) throw new FilesError("not_writable", `根 ${r.def.name} 不可写`);
+  if (sanitizeSegment(q.name) !== q.name)
+    throw new FilesError("bad_request", `文件名含非法字符或首尾有空白/点，可改为：${sanitizeSegment(q.name)}`);
+  await recheck(r.abs, r.rootReal);
+  const dst = join(r.abs, q.name);
+  const rel = relOf(r.rootReal, dst);
+  let size: number;
+  if (r.def.storageId) {
+    if (await vexists(dst).catch((e) => Promise.reject(remoteError(e, dst))))
+      throw new FilesError("exists", `已存在，不覆盖：${q.name}`);
+    const dir = relayDir();
+    await mkdir(dir, { recursive: true });
+    const tmp = join(dir, `${randomUUID()}-upload`);
+    try {
+      size = await spool(body, tmp, signal);
+      const { v, client } = await remote(dst);
+      await client.upload(tmp, v.remote, signal ? { signal } : {});
+    } catch (e) {
+      if (e instanceof FilesError) throw e;
+      const err = remoteError(e, dst);
+      if (errnoOf(err) === "EEXIST") throw new FilesError("exists", `已存在，不覆盖：${q.name}`);
+      throw new FilesError("upstream", `上传到 Alist 失败：${err.message}`);
+    } finally {
+      await rm(tmp, { force: true }).catch(() => undefined);
+    }
+  } else {
+    const partial = partialPathFor(dst);
+    try {
+      size = await spool(body, partial, signal);
+      await commitNoClobber(partial, dst);
+    } catch (e) {
+      await rm(partial, { force: true }).catch(() => undefined);
+      if (errnoOf(e) === "EEXIST") throw new FilesError("exists", `已存在，不覆盖：${q.name}`);
+      throw e;
+    }
+  }
+  await audit(d, principal, "upload", { root: q.root, path: rel, size });
+  filesChanged(d, q.root, [r.rel]);
+  return { path: rel, size };
+}
diff --git a/apps/server/test/file-manager/harness.ts b/apps/server/test/file-manager/harness.ts
index 54d1cfb8..df0b2d19 100644
--- a/apps/server/test/file-manager/harness.ts
+++ b/apps/server/test/file-manager/harness.ts
@@ -74,6 +74,8 @@ export interface FmHarness {
   api(method: string, path: string, body?: unknown, key?: string): Promise<{ status: number; body: Loose }>;
   /** 原始响应(非 JSON 接口,如 /files/download) */
   raw(method: string, path: string, key?: string): Promise<Response>;
+  /** 带原始请求体(如 PUT /files/upload) */
+  rawBody(method: string, path: string, body: BodyInit, key?: string): Promise<Response>;
   close(): Promise<void>;
 }
 
@@ -264,6 +266,15 @@ export async function createFmHarness(
     raw(method, path, key = DEV_KEY) {
       return Promise.resolve(app.request(`/api/v1${path}`, { method, headers: authHeaders(key) }));
     },
+    rawBody(method, path, body, key = DEV_KEY) {
+      return Promise.resolve(
+        app.request(`/api/v1${path}`, {
+          method,
+          headers: { ...authHeaders(key), "content-type": "application/octet-stream" },
+          body,
+        }),
+      );
+    },
     async close() {
       await ts.drop();
       await rm(base, { recursive: true, force: true });
diff --git a/apps/server/test/storage/alist-files.test.ts b/apps/server/test/storage/alist-files.test.ts
new file mode 100644
index 00000000..1bafe65e
--- /dev/null
+++ b/apps/server/test/storage/alist-files.test.ts
@@ -0,0 +1,240 @@
+import { readFile, writeFile } from "node:fs/promises";
+import { join } from "node:path";
+import { afterAll, beforeAll, describe, expect, it } from "vitest";
+import { createFmHarness, type FmHarness, key, pgAvailable, SESSION } from "../file-manager/harness.ts";
+import { addAlist, addAlistLibrary, type TestAlist, text } from "./alist.ts";
+
+// 文件管理接入 Alist(对照 MP 存储切换 + Alist 浏览 / 新建目录 / 改名 / 删除 / 移动 / 复制 / 上传 / 下载):
+// 根列表多出 st: 根、列目录一次 list(refresh 只在用户刷新时带)、删除进 Alist 上的 .umt-trash 并可还原、
+// 存储内移动 / 复制走 Alist API、上传同名不覆盖、连不上返回 503 而不是「空目录」。
+
+const skip = !(await pgAvailable());
+
+describe.skipIf(skip)("文件管理:Alist 存储", () => {
+  let h: FmHarness;
+  let a: TestAlist;
+  beforeAll(async () => {
+    h = await createFmHarness("alist_files");
+    a = await addAlist(h.db, {
+      name: "OpenList",
+      mockOptions: { token: "t", mountDetails: { "/s1": { total_space: 100, free_space: 40, used_space: 60 } } },
+      rootPath: "/s1",
+    });
+    a.mock.put("/s1/movies/A.2020.1080p.mkv", "video-a");
+    a.mock.put("/s1/movies/A.2020.1080p.chs.srt", "sub-a");
+    a.mock.put("/s1/notes/readme.nfo", "<movie/>");
+  });
+  afterAll(async () => h?.close());
+
+  it("根列表:每个启用的 Alist 实例一个 st: 根,带存储名与容量", async () => {
+    const r = await h.api("GET", "/files/roots");
+    expect(r.status).toBe(200);
+    const st = r.body.data.items.find((x: { id: string }) => x.id === a.root);
+    expect(st).toMatchObject({
+      kind: "storage",
+      name: "OpenList",
+      health: "healthy",
+      writable: true,
+      storage: { id: a.id, name: "OpenList", path: "/s1" },
+      usage: { totalBytes: 100, freeBytes: 40 },
+    });
+  });
+
+  it("列目录:一次 list,不带 refresh;用户刷新才带", async () => {
+    a.mock.requests.length = 0;
+    const r = await h.api("GET", `/files?root=${a.root}&path=movies`);
+    expect(r.status).toBe(200);
+    expect(r.body.data.entries.map((e: { name: string }) => e.name)).toEqual([
+      "A.2020.1080p.chs.srt",
+      "A.2020.1080p.mkv",
+    ]);
+    expect(r.body.data.entries.find((e: { name: string }) => e.name.endsWith(".mkv"))).toMatchObject({
+      type: "file",
+      size: 7,
+      fileKind: "video",
+      status: "unidentified",
+    });
+    const lists = a.mock.requests.filter((x) => x.path === "/api/fs/list");
+    expect(lists).toHaveLength(1);
+    expect(lists[0]!.body!.refresh).toBe(false);
+    await h.api("GET", `/files?root=${a.root}&path=movies&refresh=true`);
+    expect(a.mock.requests.filter((x) => x.path === "/api/fs/list").at(-1)!.body!.refresh).toBe(true);
+  });
+
+  it("新建目录 / 改名(带字幕)/ 同名不覆盖", async () => {
+    const mk = await h.api("POST", "/files/mkdir", { idempotencyKey: key(), root: a.root, path: "", name: "新目录" });
+    expect(mk.status).toBe(200);
+    expect(a.mock.exists("/s1/新目录")).toBe(true);
+    const dup = await h.api("POST", "/files/mkdir", { idempotencyKey: key(), root: a.root, path: "", name: "新目录" });
+    expect(dup.status).toBe(409);
+    const rn = await h.api("POST", "/files/rename", {
+      idempotencyKey: key(),
+      root: a.root,
+      path: "movies/A.2020.1080p.mkv",
+      newName: "A (2020).mkv",
+      withSidecars: true,
+    });
+    expect(rn.status).toBe(200);
+    expect(a.mock.listNames("/s1/movies")).toEqual(["A (2020).chs.srt", "A (2020).mkv"]);
+    a.mock.put("/s1/movies/B.mkv", "b");
+    const clash = await h.api("POST", "/files/rename", {
+      idempotencyKey: key(),
+      root: a.root,
+      path: "movies/B.mkv",
+      newName: "A (2020).mkv",
+    });
+    expect(clash.status).toBe(409);
+    expect(text(a.mock.read("/s1/movies/A (2020).mkv"))).toBe("video-a");
+  });
+
+  it("上传:流式转传到 Alist,同名不覆盖", async () => {
+    const r = await h.rawBody(
+      "PUT",
+      `/files/upload?root=${a.root}&path=notes&name=${encodeURIComponent("新 文件.txt")}&idempotencyKey=${key()}`,
+      "hello alist",
+    );
+    expect(r.status).toBe(200);
+    expect((await r.json()).data).toEqual({ path: "notes/新 文件.txt", size: 11 });
+    expect(text(a.mock.read("/s1/notes/新 文件.txt"))).toBe("hello alist");
+    const again = await h.rawBody(
+      "PUT",
+      `/files/upload?root=${a.root}&path=notes&name=readme.nfo&idempotencyKey=${key()}`,
+      "overwrite?",
+    );
+    expect(again.status).toBe(409);
+    expect(text(a.mock.read("/s1/notes/readme.nfo"))).toBe("<movie/>");
+    // 本地根同样可以上传
+    const local = await h.rawBody(
+      "PUT",
+      `/files/upload?root=${h.libRoot}&path=&name=up.txt&idempotencyKey=${key()}`,
+      "local",
+    );
+    expect(local.status).toBe(200);
+    expect(await readFile(join(h.lib, "up.txt"), "utf8")).toBe("local");
+  });
+
+  it("下载与预览(管理员会话):流式转发 Alist 直链", async () => {
+    const r = await h.raw("GET", `/files/download?root=${a.root}&path=notes/readme.nfo`, SESSION);
+    expect(r.status).toBe(200);
+    expect(await r.text()).toBe("<movie/>");
+    const p = await h.api("GET", `/files/preview?root=${a.root}&path=notes/readme.nfo`, undefined, SESSION);
+    expect(p.status).toBe(200);
+    expect(JSON.stringify(p.body.data)).toContain("movie");
+  });
+
+  it("删除进 Alist 上的回收站,可还原", async () => {
+    const del = await h.api("POST", "/files/delete", {
+      idempotencyKey: key(),
+      items: [{ root: a.root, path: "movies/B.mkv" }],
+      dryRun: false,
+    });
+    expect(del.status).toBe(200);
+    expect(del.body.data.trashed).toHaveLength(1);
+    expect(a.mock.exists("/s1/movies/B.mkv")).toBe(false);
+    const trashPath = del.body.data.trashed[0].trashPath as string;
+    expect(trashPath.startsWith(a.v("/s1/.umt-trash/"))).toBe(true);
+    const restore = await h.api("POST", "/files/trash/restore", {
+      idempotencyKey: key(),
+      ids: [del.body.data.trashed[0].id],
+    });
+    expect(restore.status).toBe(200);
+    expect(restore.body.data.restored).toHaveLength(1);
+    expect(text(a.mock.read("/s1/movies/B.mkv"))).toBe("b");
+  });
+
+  it("存储内复制 / 移动走 Alist API(复制源保留,移动源消失)", async () => {
+    const dry = await h.api("POST", "/files/copy", {
+      idempotencyKey: key(),
+      items: [{ root: a.root, path: "notes/readme.nfo" }],
+      target: { root: a.root, path: "新目录" },
+      dryRun: true,
+    });
+    expect(dry.status).toBe(200);
+    const exec = await h.api("POST", "/files/copy", {
+      idempotencyKey: key(),
+      items: [{ root: a.root, path: "notes/readme.nfo" }],
+      target: { root: a.root, path: "新目录" },
+      dryRun: false,
+      planId: dry.body.data.planId,
+    });
+    expect(exec.status).toBe(200);
+    expect(exec.body.data.executed).toMatchObject({ succeeded: ["notes/readme.nfo"], failed: [] });
+    expect(text(a.mock.read("/s1/新目录/readme.nfo"))).toBe("<movie/>");
+    expect(a.mock.exists("/s1/notes/readme.nfo")).toBe(true);
+    expect(a.mock.requests.some((x) => x.path === "/api/fs/copy")).toBe(true);
+
+    const mdry = await h.api("POST", "/files/move", {
+      idempotencyKey: key(),
+      items: [{ root: a.root, path: "movies/B.mkv" }],
+      target: { root: a.root, path: "新目录" },
+      mode: "move",
+      dryRun: true,
+    });
+    const mexec = await h.api("POST", "/files/move", {
+      idempotencyKey: key(),
+      items: [{ root: a.root, path: "movies/B.mkv" }],
+      target: { root: a.root, path: "新目录" },
+      mode: "move",
+      dryRun: false,
+      planId: mdry.body.data.planId,
+    });
+    expect(mexec.status).toBe(200);
+    expect(mexec.body.data.executed.failed).toEqual([]);
+    expect(a.mock.exists("/s1/新目录/B.mkv")).toBe(true);
+    expect(a.mock.exists("/s1/movies/B.mkv")).toBe(false);
+  });
+
+  it("复制到本地媒体库(下载到本地)与从本地复制到 Alist 媒体库(上传)", async () => {
+    const dry = await h.api("POST", "/files/copy", {
+      idempotencyKey: key(),
+      items: [{ root: a.root, path: "movies/A (2020).mkv" }],
+      target: { root: h.libRoot, path: "" },
+      dryRun: true,
+    });
+    const exec = await h.api("POST", "/files/copy", {
+      idempotencyKey: key(),
+      items: [{ root: a.root, path: "movies/A (2020).mkv" }],
+      target: { root: h.libRoot, path: "" },
+      dryRun: false,
+      planId: dry.body.data.planId,
+    });
+    expect(exec.body.data.executed.failed).toEqual([]);
+    expect(await readFile(join(h.lib, "A (2020).mkv"), "utf8")).toBe("video-a");
+
+    const alib = await addAlistLibrary(h.db, a, "/s1/library");
+    await writeFile(join(h.lib, "local.mkv"), "local-video");
+    const d2 = await h.api("POST", "/files/copy", {
+      idempotencyKey: key(),
+      items: [{ root: h.libRoot, path: "local.mkv" }],
+      target: { root: alib.root, path: "" },
+      dryRun: true,
+    });
+    expect(d2.status).toBe(200);
+    const e2 = await h.api("POST", "/files/copy", {
+      idempotencyKey: key(),
+      items: [{ root: h.libRoot, path: "local.mkv" }],
+      target: { root: alib.root, path: "" },
+      dryRun: false,
+      planId: d2.body.data.planId,
+    });
+    expect(e2.body.data.executed.failed).toEqual([]);
+    expect(text(a.mock.read("/s1/library/local.mkv"))).toBe("local-video");
+  });
+
+  it("目录树:Alist 只列当前层,不逐个子目录再请求", async () => {
+    a.mock.requests.length = 0;
+    const r = await h.api("GET", `/files/tree?root=${a.root}&path=`);
+    expect(r.status).toBe(200);
+    expect(r.body.data.dirs.map((x: { name: string }) => x.name)).toEqual(
+      expect.arrayContaining(["movies", "notes", "新目录"]),
+    );
+    expect(a.mock.requests.filter((x) => x.path === "/api/fs/list")).toHaveLength(1);
+  });
+
+  it("Alist 连不上:列目录 503,不当成空目录", async () => {
+    a.mock.failNext(5);
+    const r = await h.api("GET", `/files?root=${a.root}&path=movies`);
+    expect(r.status).toBe(503);
+    expect(r.body.error.message).toMatch(/^root_unavailable:/);
+  });
+});
diff --git a/apps/server/test/storage/alist.ts b/apps/server/test/storage/alist.ts
new file mode 100644
index 00000000..e336d9ff
--- /dev/null
+++ b/apps/server/test/storage/alist.ts
@@ -0,0 +1,66 @@
+import { AlistClient, type AlistClientOptions } from "@umt/adapters";
+import { createMockAlist, type MockAlist, type MockAlistOptions } from "@umt/adapters/alist-mock";
+import type { DB, Kysely } from "@umt/db";
+import { overrideStorage } from "../../src/storage/registry.ts";
+import { toVPath } from "../../src/storage/vpath.ts";
+
+// Alist 测试装配:登记一个存储实例(storage_instance 行)并把注册表里的客户端换成进程内模拟 Alist。
+
+export interface TestAlist {
+  id: string;
+  mock: MockAlist;
+  client: AlistClient;
+  /** 文件管理根 id(st:<id>) */
+  root: string;
+  /** Alist 内路径 → 虚拟路径 */
+  v(p: string): string;
+}
+
+export async function addAlist(
+  db: Kysely<DB>,
+  o: {
+    name?: string;
+    rootPath?: string;
+    mock?: MockAlist;
+    mockOptions?: MockAlistOptions;
+    client?: Partial<AlistClientOptions>;
+  } = {},
+): Promise<TestAlist> {
+  const mock = o.mock ?? createMockAlist(o.mockOptions ?? { token: "t" });
+  const rootPath = o.rootPath ?? "/";
+  const row = await db
+    .insertInto("storage_instance")
+    .values({ name: o.name ?? `alist-${crypto.randomUUID().slice(0, 6)}`, base_url: mock.base, root_path: rootPath })
+    .returning("id")
+    .executeTakeFirstOrThrow();
+  // 假时钟:等待 / 退避不真睡,超时按累计的「睡眠」计
+  let clock = 0;
+  const client = new AlistClient({
+    baseUrl: mock.base,
+    auth: { kind: "token", token: "t" },
+    fetch: mock.fetch,
+    qps: 0,
+    concurrency: 0,
+    retries: 0,
+    now: () => clock,
+    sleep: async (ms) => {
+      clock += ms;
+    },
+    ...o.client,
+  });
+  overrideStorage(row.id, { client, name: o.name ?? "Alist", rootPath });
+  return { id: row.id, mock, client, root: `st:${row.id}`, v: (p) => toVPath(row.id, p) };
+}
+
+/** 在 Alist 上登记一个纳管媒体库目录 */
+export async function addAlistLibrary(db: Kysely<DB>, a: TestAlist, path: string, name = "Alist 媒体库") {
+  a.mock.mkdirp(path);
+  const r = await db
+    .insertInto("library_root")
+    .values({ name, media_kind: "mixed", local_path: a.v(path), management_mode: "managed", sentinel_file: null })
+    .returning("id")
+    .executeTakeFirstOrThrow();
+  return { libraryRootId: r.id, root: `lib:${r.id}` };
+}
+
+export const text = (b: Uint8Array | null) => (b ? new TextDecoder().decode(b) : null);
diff --git a/apps/web/app/components/files/mock.ts b/apps/web/app/components/files/mock.ts
index a9284f3c..635ea41d 100644
--- a/apps/web/app/components/files/mock.ts
+++ b/apps/web/app/components/files/mock.ts
@@ -101,6 +101,7 @@ function makeRoots(): { roots: FileRoot[]; trees: Record<string, Node> } {
       usage: { totalBytes: 16_000 * GB, freeBytes: 3_420 * GB },
       pendingCount: null,
       pendingPartial: false,
+      storage: null,
     },
     {
       id: "lib:tv",
@@ -115,6 +116,7 @@ function makeRoots(): { roots: FileRoot[]; trees: Record<string, Node> } {
       usage: { totalBytes: 16_000 * GB, freeBytes: 3_420 * GB },
       pendingCount: null,
       pendingPartial: false,
+      storage: null,
     },
     {
       id: "lib:nas-old",
@@ -129,6 +131,7 @@ function makeRoots(): { roots: FileRoot[]; trees: Record<string, Node> } {
       usage: null,
       pendingCount: null,
       pendingPartial: false,
+      storage: null,
     },
     {
       id: "dl:qb-main:0",
@@ -143,6 +146,7 @@ function makeRoots(): { roots: FileRoot[]; trees: Record<string, Node> } {
       usage: { totalBytes: 8_000 * GB, freeBytes: 1_210 * GB },
       pendingCount: 12,
       pendingPartial: false,
+      storage: null,
     },
   ];
   const tlouEps = [1, 2, 3, 4, 5, 6, 7].map((ep) =>
diff --git a/apps/web/app/components/files/model.ts b/apps/web/app/components/files/model.ts
index ce7902f6..6c47df57 100644
--- a/apps/web/app/components/files/model.ts
+++ b/apps/web/app/components/files/model.ts
@@ -480,7 +480,11 @@ export function entrySubline(e: FileEntry): { text: string; tone: "link" | "hint
   return null;
 }
 
-export const ROOT_KIND_LABEL: Record<FileRoot["kind"], string> = { download: "下载目录", library: "媒体库" };
+export const ROOT_KIND_LABEL: Record<FileRoot["kind"], string> = {
+  download: "下载目录",
+  library: "媒体库",
+  storage: "Alist 存储",
+};
 
 export type Crumb = { label: string; path: string };
 
diff --git a/packages/contracts/src/api/organize.ts b/packages/contracts/src/api/organize.ts
index b5c0c465..5d04d680 100644
--- a/packages/contracts/src/api/organize.ts
+++ b/packages/contracts/src/api/organize.ts
@@ -266,6 +266,14 @@ export const organizeApi = {
       body: files.FilesProbeRequest,
       response: files.FilesProbeResult,
     }),
+    upload: ep({
+      method: "put",
+      path: "/files/upload",
+      scope: "organize.execute",
+      summary: "上传文件到目录（请求体为文件字节；同名不覆盖；Alist 根经服务端转传）",
+      query: files.FilesUploadQuery,
+      response: files.FilesUploadResult,
+    }),
     download: ep({
       method: "get",
       path: "/files/download",
diff --git a/packages/contracts/src/files.ts b/packages/contracts/src/files.ts
index 301d51d4..fddf5167 100644
--- a/packages/contracts/src/files.ts
+++ b/packages/contracts/src/files.ts
@@ -13,8 +13,10 @@ import { ScrapeMode, ScrapeRecord } from "./scrape.ts";
 // 移动/复制/整理/删除都是两段式:dryRun=true 取得 planId 与前后路径清单,执行时回传 planId;
 // 源文件 size/mtime 变化或 planId 过期/与请求不符 → 409 plan_stale。
 
-/** `lib:<library_root.id>` 或 `dl:<downloader_instance.id>:<路径映射序号>` */
-export const FileRootId = z.string().regex(/^(lib:[0-9a-f-]{36}|dl:[0-9a-f-]{36}:\d{1,3})$/i, { message: "非法根 id" });
+/** `lib:<library_root.id>`、`dl:<downloader_instance.id>:<路径映射序号>` 或 `st:<storage_instance.id>`(Alist 存储) */
+export const FileRootId = z
+  .string()
+  .regex(/^(lib:[0-9a-f-]{36}|dl:[0-9a-f-]{36}:\d{1,3}|st:[0-9a-f-]{36})$/i, { message: "非法根 id" });
 export type FileRootId = z.infer<typeof FileRootId>;
 
 /** 根内相对路径:不以 / 开头,不含 `..` 段与 NUL;服务端仍会 realpath 复核 */
@@ -41,7 +43,7 @@ export const IdempotencyKey = z.string().min(8).max(200);
 
 // ── 根 ──
 
-export const FileRootKind = z.enum(["library", "download"]);
+export const FileRootKind = z.enum(["library", "download", "storage"]);
 export type FileRootKind = z.infer<typeof FileRootKind>;
 
 export const FileRoot = z.object({
@@ -59,6 +61,8 @@ export const FileRoot = z.object({
   /** 健康探测失败原因(离线时) */
   healthReason: z.string().nullable(),
   usage: z.object({ totalBytes: NonNegInt, freeBytes: NonNegInt }).nullable(),
+  /** 根所在存储:本机为 null;Alist 根给实例 id 与名称(界面显示「存储名:/路径」) */
+  storage: z.object({ id: z.string(), name: z.string(), path: z.string() }).nullable().default(null),
   /** G6:下载目录下待识别视频数(与列表"待识别"筛选同口径,递归,缓存 5 分钟);库根与离线根为 null */
   pendingCount: NonNegInt.nullable(),
   /** G6:递归超过扫描上限时为 true,pendingCount 是下限 */
@@ -182,6 +186,8 @@ export const FilesListQuery = z.object({
     .optional(),
   /** 默认 false:隐藏点文件、.uhd-partial、.umt-trash、哨兵 */
   hidden: boolQuery.default(false),
+  /** Alist 根:让 Alist 刷新目录缓存(穿透到网盘接口;只在用户点「刷新」时带) */
+  refresh: boolQuery.default(false),
 });
 export type FilesListQuery = z.infer<typeof FilesListQuery>;
 
@@ -797,6 +803,20 @@ export type FilesProbeResult = z.infer<typeof FilesProbeResult>;
 
 // 下载(W5-A2):GET /files/download 直接返回文件流(非 JSON 信封);仅管理员会话;
 // 仅 nfo/字幕/图片且 ≤ FILES_DOWNLOAD_MAX_BYTES(默认 20 MiB);inline=true 仅对图片生效(预览)。
+/**
+ * 上传(PUT /files/upload,请求体是文件原始字节):放进 {root, path} 目录,文件名 name;同名已存在 409(不覆盖)。
+ * Alist 根经服务端转传(先写本机临时文件再上传到 Alist,同 MP);本地根直接写临时文件后不覆盖改名。
+ */
+export const FilesUploadQuery = z.object({
+  root: FileRootId,
+  path: FileRelPath,
+  name: FileName,
+  idempotencyKey: IdempotencyKey,
+});
+export type FilesUploadQuery = z.infer<typeof FilesUploadQuery>;
+export const FilesUploadResult = z.object({ path: FileRelPath, size: NonNegInt });
+export type FilesUploadResult = z.infer<typeof FilesUploadResult>;
+
 export const FilesDownloadQuery = z.object({ root: FileRootId, path: FileRelPath, inline: boolQuery.default(false) });
 export type FilesDownloadQuery = z.infer<typeof FilesDownloadQuery>;
 /** OpenAPI 描述用:实际响应为二进制流 */