diff --git a/.memory/worklog.json b/.memory/worklog.json
index 2702693..ef30469 100644
--- a/.memory/worklog.json
+++ b/.memory/worklog.json
@@ -1,19 +1,5 @@
 {
   "entries": [
-    {
-      "files_changed": 1,
-      "hash": "0abb1a2",
-      "message": "auto-save 2026-05-16 15:26 (~1)",
-      "ts": "2026-05-16T15:26:26+08:00",
-      "type": "commit"
-    },
-    {
-      "files_changed": 1,
-      "hash": "11506f6",
-      "message": "auto-save 2026-05-16 15:32 (~1)",
-      "ts": "2026-05-16T15:32:12+08:00",
-      "type": "commit"
-    },
     {
       "files_changed": 1,
       "hash": "59687a5",
@@ -3214,6 +3200,19 @@
       "type": "session-heartbeat",
       "message": "Codex 会话活跃 · 最近命令：codex · 分支 main · 1 项未提交变更 · 最近提交：docs: document skg brand workbench theme",
       "files_changed": 1
+    },
+    {
+      "ts": "2026-05-18T20:51:56+08:00",
+      "type": "commit",
+      "message": "auto-save 2026-05-18 20:51 (~2)",
+      "hash": "58fe17c",
+      "files_changed": 2
+    },
+    {
+      "ts": "2026-05-18T12:52:20Z",
+      "type": "session-heartbeat",
+      "message": "Codex 会话活跃 · 最近命令：codex · 分支 main · 2 项未提交变更 · 最近提交：auto-save 2026-05-18 20:51 (~2)",
+      "files_changed": 2
     }
   ]
 }
diff --git a/api/main.py b/api/main.py
index 5b9a4be..c3d0530 100644
--- a/api/main.py
+++ b/api/main.py
@@ -1396,6 +1396,289 @@ def auth_logout(response: Response) -> dict:
     return {"ok": True}
 
 
+def _parse_library_metadata(raw: str) -> dict:
+    if not raw.strip():
+        return {}
+    try:
+        data = json.loads(raw)
+        return data if isinstance(data, dict) else {}
+    except Exception as e:
+        raise HTTPException(400, f"metadata json invalid: {e}")
+
+
+async def _save_upload_to_path(upload: UploadFile, dst: Path) -> None:
+    dst.parent.mkdir(parents=True, exist_ok=True)
+    data = await upload.read()
+    if not data:
+        raise HTTPException(400, f"{upload.filename or 'file'} is empty")
+    dst.write_bytes(data)
+
+
+def _save_library_image(src: Path, dst: Path) -> AssetLibraryImage:
+    dst.parent.mkdir(parents=True, exist_ok=True)
+    try:
+        with Image.open(src) as im:
+            rgb = im.convert("RGB")
+            rgb.save(dst, "JPEG", quality=94)
+    except Exception:
+        shutil.copy2(src, dst)
+    width, height = _library_media_size(dst)
+    return AssetLibraryImage(
+        id=dst.stem,
+        view=dst.stem,
+        label=dst.stem,
+        filename=str(dst.relative_to(dst.parents[1])),
+        width=width,
+        height=height,
+        created_at=_now_ts(),
+    )
+
+
+@app.get("/prompt-library", response_model=list[PromptLibraryItem])
+def list_prompt_library(category: PromptLibraryCategory | None = None, q: str = "", sort: str = "") -> list[PromptLibraryItem]:
+    items = load_prompt_library_items()
+    if category:
+        items = [item for item in items if item.category == category]
+    items = _prompt_library_search(items, q)
+    if sort == "use_count":
+        items.sort(key=lambda item: (item.use_count, item.updated_at or item.created_at), reverse=True)
+    return items
+
+
+@app.get("/prompt-library/{item_id}", response_model=PromptLibraryItem)
+def get_prompt_library_item(item_id: str) -> PromptLibraryItem:
+    return find_prompt_library_item(item_id)
+
+
+@app.post("/prompt-library", response_model=PromptLibraryItem)
+def create_prompt_library_item(req: PromptLibraryWriteReq) -> PromptLibraryItem:
+    now = _now_ts()
+    name = req.name.strip()
+    prompt_en = _ensure_english(req.prompt_en.strip()) if req.prompt_en.strip() else ""
+    if not name:
+        raise HTTPException(400, "prompt name required")
+    if not prompt_en and not req.prompt_zh.strip():
+        raise HTTPException(400, "prompt content required")
+    item = PromptLibraryItem(
+        id=f"lib_prompt_{uuid.uuid4().hex[:12]}",
+        category=req.category,
+        name=name,
+        tags=_safe_tags(req.tags),
+        prompt_en=prompt_en or _ensure_english(req.prompt_zh.strip()),
+        prompt_zh=req.prompt_zh.strip(),
+        source_job_id=req.source_job_id.strip(),
+        created_at=now,
+        updated_at=now,
+    )
+    _write_prompt_item(item)
+    return item
+
+
+@app.patch("/prompt-library/{item_id}", response_model=PromptLibraryItem)
+def patch_prompt_library_item(item_id: str, req: PromptLibraryPatchReq) -> PromptLibraryItem:
+    item = find_prompt_library_item(item_id)
+    data = item.model_dump()
+    patch = req.model_dump(exclude_unset=True)
+    if "tags" in patch:
+        patch["tags"] = _safe_tags(patch["tags"])
+    if "name" in patch:
+        patch["name"] = str(patch["name"]).strip()
+    if "prompt_en" in patch and str(patch["prompt_en"]).strip():
+        patch["prompt_en"] = _ensure_english(str(patch["prompt_en"]).strip())
+    data.update(patch)
+    data["updated_at"] = _now_ts()
+    updated = PromptLibraryItem(**data)
+    if not updated.name.strip():
+        raise HTTPException(400, "prompt name required")
+    _write_prompt_item(updated)
+    return updated
+
+
+@app.delete("/prompt-library/{item_id}")
+def delete_prompt_library_item(item_id: str) -> dict:
+    item = find_prompt_library_item(item_id)
+    src = _prompt_item_file(item)
+    trash = LIBRARY_TRASH_DIR / "prompt_library" / f"{item.id}_{int(_now_ts())}.json"
+    trash.parent.mkdir(parents=True, exist_ok=True)
+    shutil.move(str(src), str(trash))
+    _write_prompt_library_index()
+    return {"ok": True, "id": item.id, "trashed": str(trash)}
+
+
+@app.post("/prompt-library/{item_id}/use", response_model=PromptLibraryItem)
+def use_prompt_library_item(item_id: str) -> PromptLibraryItem:
+    item = find_prompt_library_item(item_id)
+    item.use_count += 1
+    item.updated_at = _now_ts()
+    _write_prompt_item(item)
+    return item
+
+
+@app.get("/asset-library/{kind}", response_model=list[AssetLibraryItem])
+def list_asset_library(kind: AssetLibraryKind, q: str = "", sort: str = "") -> list[AssetLibraryItem]:
+    items = _asset_library_search(load_asset_library_items(kind), q)
+    if sort == "use_count":
+        items.sort(key=lambda item: (item.use_count, item.updated_at or item.created_at), reverse=True)
+    return items
+
+
+@app.get("/asset-library/{kind}/{item_id}", response_model=AssetLibraryItem)
+def get_asset_library_item(kind: AssetLibraryKind, item_id: str) -> AssetLibraryItem:
+    return find_asset_library_item(kind, item_id)
+
+
+@app.post("/asset-library/{kind}", response_model=AssetLibraryItem)
+async def create_asset_library_item(
+    kind: AssetLibraryKind,
+    metadata: str = Form("{}"),
+    files: list[UploadFile] = File(default=[]),
+) -> AssetLibraryItem:
+    meta = _parse_library_metadata(metadata)
+    if not files:
+        raise HTTPException(400, "at least one file required")
+    now = _now_ts()
+    item_id = f"lib_{kind}_{uuid.uuid4().hex[:12]}"
+    item_dir = _asset_library_item_dir(kind, item_id)
+    tmp_dir = item_dir / "_tmp"
+    item_dir.mkdir(parents=True, exist_ok=True)
+    tmp_dir.mkdir(parents=True, exist_ok=True)
+    name = str(meta.get("name") or meta.get("name_zh") or kind).strip()
+    item = AssetLibraryItem(
+        id=item_id,
+        kind=kind,
+        name=name,
+        name_zh=str(meta.get("name_zh") or "").strip(),
+        note=str(meta.get("note") or "").strip(),
+        tags=_safe_tags(meta.get("tags")),
+        source_job_id=str(meta.get("source_job_id") or "").strip(),
+        is_official=bool(meta.get("is_official") or False),
+        prompt_brief=str(meta.get("prompt_brief") or "").strip(),
+        prompt_brief_zh=str(meta.get("prompt_brief_zh") or "").strip(),
+        subject_style=str(meta.get("subject_style") or "transparent_human") if kind == "subjects" else "transparent_human",
+        product_type=str(meta.get("product_type") or "").strip(),
+        asset_role=str(meta.get("asset_role") or "").strip(),
+        aspect_ratio=str(meta.get("aspect_ratio") or "").strip(),
+        created_at=now,
+        updated_at=now,
+    )
+    requested_views = [str(v).strip() for v in (meta.get("views") or []) if str(v).strip()]
+    saved_images: list[AssetLibraryImage] = []
+    for index, upload in enumerate(files):
+        suffix = Path(upload.filename or "").suffix.lower() or ".jpg"
+        tmp = tmp_dir / f"{index}{suffix}"
+        await _save_upload_to_path(upload, tmp)
+        if kind == "videos":
+            if suffix in {".jpg", ".jpeg", ".png", ".webp"}:
+                image = _save_library_image(tmp, item_dir / "poster.jpg")
+                image.id = "poster"
+                image.view = "poster"
+                image.label = "poster"
+                image.filename = "poster.jpg"
+                item.poster = image
+            else:
+                shutil.copy2(tmp, item_dir / "video.mp4")
+                item.video_url = f"/asset-library/videos/{item_id}/file/video.mp4"
+            continue
+        view = requested_views[index] if index < len(requested_views) else (Path(upload.filename or "").stem or f"view_{index + 1}")
+        safe_view = re.sub(r"[^a-zA-Z0-9_-]+", "_", view).strip("_") or f"view_{index + 1}"
+        image = _save_library_image(tmp, item_dir / "images" / f"{safe_view}.jpg")
+        image.id = safe_view
+        image.view = safe_view
+        image.label = view
+        image.filename = f"images/{safe_view}.jpg"
+        saved_images.append(image)
+    shutil.rmtree(tmp_dir, ignore_errors=True)
+    if kind == "subjects":
+        item.images = saved_images
+        item.views = saved_images
+        item.prompt_brief = _ensure_english(item.prompt_brief) if item.prompt_brief else item.note
+    elif kind == "products":
+        item.views = saved_images
+        item.images = saved_images
+    elif kind == "scenes":
+        item.image = saved_images[0] if saved_images else None
+        if item.image:
+            item.image.id = "image"
+            item.image.view = "scene"
+            item.image.label = "scene"
+    elif kind == "videos" and not item.video_url:
+        raise HTTPException(400, "video file required")
+    _hydrate_asset_library_urls(item)
+    _write_asset_item(item)
+    return item
+
+
+@app.patch("/asset-library/{kind}/{item_id}", response_model=AssetLibraryItem)
+def patch_asset_library_item(kind: AssetLibraryKind, item_id: str, req: AssetLibraryPatchReq) -> AssetLibraryItem:
+    item = find_asset_library_item(kind, item_id)
+    data = item.model_dump()
+    patch = req.model_dump(exclude_unset=True)
+    if "tags" in patch:
+        patch["tags"] = _safe_tags(patch["tags"])
+    data.update(patch)
+    data["updated_at"] = _now_ts()
+    updated = AssetLibraryItem(**data)
+    _hydrate_asset_library_urls(updated)
+    _write_asset_item(updated)
+    return updated
+
+
+@app.get("/asset-library/{kind}/{item_id}/refs")
+def asset_library_refs(kind: AssetLibraryKind, item_id: str) -> dict:
+    find_asset_library_item(kind, item_id)
+    return _library_ref_usage(kind, item_id)
+
+
+@app.delete("/asset-library/{kind}/{item_id}")
+def delete_asset_library_item(kind: AssetLibraryKind, item_id: str, force: bool = False) -> dict:
+    item = find_asset_library_item(kind, item_id)
+    refs = _library_ref_usage(kind, item_id)
+    if refs["count"] and not force:
+        raise HTTPException(409, {"message": "asset library item is referenced", **refs})
+    src = _asset_library_item_dir(kind, item.id)
+    trash = LIBRARY_TRASH_DIR / "asset_library" / kind / f"{item.id}_{int(_now_ts())}"
+    trash.parent.mkdir(parents=True, exist_ok=True)
+    shutil.move(str(src), str(trash))
+    _write_asset_library_index()
+    return {"ok": True, "id": item.id, "refs": refs, "trashed": str(trash)}
+
+
+@app.post("/asset-library/{kind}/{item_id}/copy-to-job/{job_id}")
+def copy_asset_library_to_job(kind: AssetLibraryKind, item_id: str, job_id: str) -> dict:
+    return _copy_library_to_job(kind, item_id, job_id)
+
+
+@app.get("/asset-library/{kind}/{item_id}/file/{filename:path}")
+def get_asset_library_file(kind: AssetLibraryKind, item_id: str, filename: str):
+    item = find_asset_library_item(kind, item_id)
+    p = _library_item_file_path(item, filename)
+    suffix = p.suffix.lower()
+    if suffix == ".mp4":
+        return FileResponse(p, media_type="video/mp4")
+    if suffix == ".png":
+        return FileResponse(p, media_type="image/png")
+    if suffix == ".webp":
+        return FileResponse(p, media_type="image/webp")
+    return FileResponse(p, media_type="image/jpeg")
+
+
+@app.get("/resource-library/recent")
+def resource_library_recent(hours: int = 24) -> dict:
+    cutoff = _now_ts() - max(1, min(hours, 24 * 30)) * 3600
+    prompts = [
+        {"type": "prompt", "category": item.category, "id": item.id, "name": item.name, "created_at": item.created_at, "item": item.model_dump()}
+        for item in load_prompt_library_items()
+        if item.created_at >= cutoff
+    ]
+    assets = [
+        {"type": "asset", "kind": item.kind, "id": item.id, "name": item.name, "created_at": item.created_at, "item": item.model_dump()}
+        for item in load_asset_library_items()
+        if item.created_at >= cutoff
+    ]
+    items = sorted(prompts + assets, key=lambda item: item.get("created_at", 0), reverse=True)
+    return {"items": items}
+
+
 # ---------- Pipeline 实现 ----------
 
 def _binary_works(path: str) -> bool:
diff --git a/web/lib/api.ts b/web/lib/api.ts
index 23e9e2a..61edea6 100644
--- a/web/lib/api.ts
+++ b/web/lib/api.ts
@@ -64,7 +64,7 @@ export interface KeyElement {
 }
 
 export interface ImageRef {
-  kind: "keyframe" | "cutout" | "asset"
+  kind: "keyframe" | "cutout" | "asset" | "library_subject" | "library_product" | "library_scene"
   frame_idx: number
   element_id?: string | null
   cutout_id?: string | null
@@ -87,6 +87,69 @@ export interface ImageRef {
   }
 }
 
+export type PromptLibraryCategory = "scene_desc" | "video_desc" | "subject_desc" | "skg_script" | "product_angle"
+export type AssetLibraryKind = "subjects" | "products" | "scenes" | "videos"
+
+export interface PromptLibraryItem {
+  id: string
+  category: PromptLibraryCategory
+  name: string
+  tags: string[]
+  prompt_en: string
+  prompt_zh: string
+  use_count: number
+  source_job_id: string
+  created_at: number
+  updated_at: number
+}
+
+export interface AssetLibraryImage {
+  id: string
+  view: string
+  label: string
+  filename: string
+  url: string
+  width: number
+  height: number
+  created_at: number
+}
+
+export interface AssetLibraryItem {
+  id: string
+  kind: AssetLibraryKind
+  name: string
+  name_zh?: string
+  note?: string
+  tags: string[]
+  source_job_id?: string
+  use_count: number
+  created_at: number
+  updated_at: number
+  is_official?: boolean
+  prompt_brief?: string
+  prompt_brief_zh?: string
+  subject_style?: "transparent_human" | "source_actor"
+  product_type?: string
+  views?: AssetLibraryImage[]
+  images?: AssetLibraryImage[]
+  asset_role?: string
+  aspect_ratio?: string
+  image?: AssetLibraryImage | null
+  duration?: number
+  poster?: AssetLibraryImage | null
+  video_url?: string
+}
+
+export interface ResourceLibraryRecentItem {
+  type: "prompt" | "asset"
+  id: string
+  name: string
+  category?: PromptLibraryCategory
+  kind?: AssetLibraryKind
+  created_at: number
+  item: PromptLibraryItem | AssetLibraryItem
+}
+
 export interface ProductFusionRegion {
   x: number
   y: number
@@ -209,6 +272,9 @@ export function resolveImageRefUrl(jobId: string, ref: ImageRef): string {
   if (ref.kind === "asset" && ref.element_id) {
     return `${API_BASE}/jobs/${jobId}/assets/${ref.element_id}.jpg`
   }
+  if (ref.kind === "library_subject" || ref.kind === "library_product" || ref.kind === "library_scene") {
+    return ""
+  }
   if (ref.element_id && ref.cutout_id) {
     if (ref.cutout_id === ref.element_id) {
       // legacy v1
@@ -402,6 +468,130 @@ export async function saveSubjectTemplate(
   return res.json()
 }
 
+export function assetLibraryFileUrl(kind: AssetLibraryKind, itemId: string, filename: string): string {
+  return `${API_BASE}/asset-library/${kind}/${itemId}/file/${filename}`
+}
+
+export async function listPromptLibrary(category?: PromptLibraryCategory, q = ""): Promise<PromptLibraryItem[]> {
+  const qs = new URLSearchParams()
+  if (category) qs.set("category", category)
+  if (q.trim()) qs.set("q", q.trim())
+  const res = await fetch(`${API_BASE}/prompt-library${qs.toString() ? `?${qs}` : ""}`, { cache: "no-store" })
+  if (!res.ok) {
+    const txt = await res.text().catch(() => "")
+    throw new Error(`listPromptLibrary ${res.status} ${txt.slice(0, 300)}`)
+  }
+  return res.json()
+}
+
+export async function createPromptLibraryItem(body: {
+  category: PromptLibraryCategory
+  name: string
+  tags?: string[]
+  prompt_en: string
+  prompt_zh?: string
+  source_job_id?: string
+}): Promise<PromptLibraryItem> {
+  const res = await fetch(`${API_BASE}/prompt-library`, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({
+      category: body.category,
+      name: body.name,
+      tags: body.tags ?? [],
+      prompt_en: body.prompt_en,
+      prompt_zh: body.prompt_zh ?? "",
+      source_job_id: body.source_job_id ?? "",
+    }),
+  })
+  if (!res.ok) {
+    const txt = await res.text().catch(() => "")
+    throw new Error(`createPromptLibraryItem ${res.status} ${txt.slice(0, 300)}`)
+  }
+  return res.json()
+}
+
+export async function usePromptLibraryItem(id: string): Promise<PromptLibraryItem> {
+  const res = await fetch(`${API_BASE}/prompt-library/${id}/use`, { method: "POST" })
+  if (!res.ok) {
+    const txt = await res.text().catch(() => "")
+    throw new Error(`usePromptLibraryItem ${res.status} ${txt.slice(0, 300)}`)
+  }
+  return res.json()
+}
+
+export async function deletePromptLibraryItem(id: string): Promise<{ ok: boolean }> {
+  const res = await fetch(`${API_BASE}/prompt-library/${id}`, { method: "DELETE" })
+  if (!res.ok) {
+    const txt = await res.text().catch(() => "")
+    throw new Error(`deletePromptLibraryItem ${res.status} ${txt.slice(0, 300)}`)
+  }
+  return res.json()
+}
+
+export async function listAssetLibrary(kind: AssetLibraryKind, q = ""): Promise<AssetLibraryItem[]> {
+  const qs = new URLSearchParams()
+  if (q.trim()) qs.set("q", q.trim())
+  const res = await fetch(`${API_BASE}/asset-library/${kind}${qs.toString() ? `?${qs}` : ""}`, { cache: "no-store" })
+  if (!res.ok) {
+    const txt = await res.text().catch(() => "")
+    throw new Error(`listAssetLibrary ${res.status} ${txt.slice(0, 300)}`)
+  }
+  return res.json()
+}
+
+export async function createAssetLibraryItem(
+  kind: AssetLibraryKind,
+  metadata: Record<string, unknown>,
+  files: File[],
+): Promise<AssetLibraryItem> {
+  const fd = new FormData()
+  fd.append("metadata", JSON.stringify(metadata))
+  for (const file of files) fd.append("files", file)
+  const res = await fetch(`${API_BASE}/asset-library/${kind}`, { method: "POST", body: fd })
+  if (!res.ok) {
+    const txt = await res.text().catch(() => "")
+    throw new Error(`createAssetLibraryItem ${res.status} ${txt.slice(0, 300)}`)
+  }
+  return res.json()
+}
+
+export async function getAssetLibraryRefs(kind: AssetLibraryKind, id: string): Promise<{ count: number; jobs: string[] }> {
+  const res = await fetch(`${API_BASE}/asset-library/${kind}/${id}/refs`, { cache: "no-store" })
+  if (!res.ok) {
+    const txt = await res.text().catch(() => "")
+    throw new Error(`getAssetLibraryRefs ${res.status} ${txt.slice(0, 300)}`)
+  }
+  return res.json()
+}
+
+export async function deleteAssetLibraryItem(kind: AssetLibraryKind, id: string, force = false): Promise<{ ok: boolean }> {
+  const res = await fetch(`${API_BASE}/asset-library/${kind}/${id}${force ? "?force=true" : ""}`, { method: "DELETE" })
+  if (!res.ok) {
+    const txt = await res.text().catch(() => "")
+    throw new Error(`deleteAssetLibraryItem ${res.status} ${txt.slice(0, 300)}`)
+  }
+  return res.json()
+}
+
+export async function copyAssetLibraryToJob(kind: AssetLibraryKind, id: string, jobId: string): Promise<ImageRef | { kind: "video"; video_id: string; url: string; label?: string }> {
+  const res = await fetch(`${API_BASE}/asset-library/${kind}/${id}/copy-to-job/${jobId}`, { method: "POST" })
+  if (!res.ok) {
+    const txt = await res.text().catch(() => "")
+    throw new Error(`copyAssetLibraryToJob ${res.status} ${txt.slice(0, 300)}`)
+  }
+  return res.json()
+}
+
+export async function getResourceLibraryRecent(hours = 24): Promise<{ items: ResourceLibraryRecentItem[] }> {
+  const res = await fetch(`${API_BASE}/resource-library/recent?hours=${encodeURIComponent(String(hours))}`, { cache: "no-store" })
+  if (!res.ok) {
+    const txt = await res.text().catch(() => "")
+    throw new Error(`getResourceLibraryRecent ${res.status} ${txt.slice(0, 300)}`)
+  }
+  return res.json()
+}
+
 export async function copyCharacterLibraryAssets(jobId: string, characterId: string): Promise<{ character_id: string; character_name: string; images: ImageRef[] }> {
   const res = await fetch(`${API_BASE}/jobs/${jobId}/assets/character-library`, {
     method: "POST",