diff --git a/__init__.py b/__init__.py
index 17800b4..8273bf2 100644
--- a/__init__.py
+++ b/__init__.py
@@ -16,11 +16,16 @@ if __package__:
         NODE_DISPLAY_NAME_MAPPINGS as _GATE_NAMES
     from .gates.textgate import NODE_CLASS_MAPPINGS as _TEXT_NODES, \
         NODE_DISPLAY_NAME_MAPPINGS as _TEXT_NAMES
+    from .gates.profile_node import NODE_CLASS_MAPPINGS as _PROF_NODES, \
+        NODE_DISPLAY_NAME_MAPPINGS as _PROF_NAMES
     from .gates import routes  # noqa: F401  (registers aiohttp routes on import)
     from .gates import gate_server  # noqa: F401  (registers /datasete_gate/* + text routes)
+    from .gates import profiles_routes  # noqa: F401  (registers /grid_pool/profiles/*)
 
-    NODE_CLASS_MAPPINGS = {**_POOL_NODES, **_LOADER_NODES, **_GATE_NODES, **_TEXT_NODES}
-    NODE_DISPLAY_NAME_MAPPINGS = {**_POOL_NAMES, **_LOADER_NAMES, **_GATE_NAMES, **_TEXT_NAMES}
+    NODE_CLASS_MAPPINGS = {**_POOL_NODES, **_LOADER_NODES, **_GATE_NODES,
+                           **_TEXT_NODES, **_PROF_NODES}
+    NODE_DISPLAY_NAME_MAPPINGS = {**_POOL_NAMES, **_LOADER_NAMES, **_GATE_NAMES,
+                                  **_TEXT_NAMES, **_PROF_NAMES}
 else:  # pragma: no cover - exercised only under pytest collection
     NODE_CLASS_MAPPINGS = {}
     NODE_DISPLAY_NAME_MAPPINGS = {}
diff --git a/gates/node.py b/gates/node.py
index c59bd68..9dc1bba 100644
--- a/gates/node.py
+++ b/gates/node.py
@@ -26,6 +26,11 @@ class GridImagePool:
                 "index": ("INT", {"default": -1, "min": -1, "max": 9999}),
                 "pool_id": ("STRING", {"default": "default"}),
             },
+            # optional companion input: a Pool Profile node feeds the profile id
+            # here; when connected it overrides pool_id (see `effective` below).
+            "optional": {
+                "profile": ("POOL_PROFILE",),
+            },
         }
 
     @staticmethod
@@ -35,13 +40,14 @@ class GridImagePool:
         idx = pool.resolve_slot(m, index)
         return base, m, idx
 
-    def run(self, index, pool_id="default"):
-        base, m, idx = self._resolve(index, pool_id)
+    def run(self, index, pool_id="default", profile=None):
+        effective = profile or pool_id
+        base, m, idx = self._resolve(index, effective)
         if idx < 0:
             img, mask = imaging.empty_outputs()
             return (img, mask, 0, 0, "")
         slot = m["slots"][idx]
-        d = pool.pool_dir(base, pool_id)
+        d = pool.pool_dir(base, effective)
         img = imaging.load_image_tensor(str(d / slot["image"]))
         h, w = int(img.shape[1]), int(img.shape[2])
         mask_name = slot.get("mask")
@@ -49,19 +55,20 @@ class GridImagePool:
         return (img, mask, idx, len(m["slots"]), slot.get("label", ""))
 
     @classmethod
-    def IS_CHANGED(cls, index, pool_id="default", **kwargs):
-        base, m, idx = cls._resolve(index, pool_id)
+    def IS_CHANGED(cls, index, pool_id="default", profile=None, **kwargs):
+        effective = profile or pool_id
+        base, m, idx = cls._resolve(index, effective)
         if idx < 0:
-            return imaging.change_hash(pool_id, -1, [])
+            return imaging.change_hash(effective, -1, [])
         slot = m["slots"][idx]
-        d = pool.pool_dir(base, pool_id)
+        d = pool.pool_dir(base, effective)
         mtimes = []
         for key in ("image", "mask"):
             name = slot.get(key)
             p = d / name if name else None
             mtimes.append(os.path.getmtime(p) if p and p.exists() else 0.0)
         # include active so manual selection changes invalidate cache
-        return imaging.change_hash(pool_id, f"{idx}:{m.get('active')}", mtimes)
+        return imaging.change_hash(effective, f"{idx}:{m.get('active')}", mtimes)
 
 
 NODE_CLASS_MAPPINGS = {"GridImagePool": GridImagePool}
diff --git a/gates/profile_node.py b/gates/profile_node.py
new file mode 100644
index 0000000..4d743aa
--- /dev/null
+++ b/gates/profile_node.py
@@ -0,0 +1,30 @@
+# gates/profile_node.py
+NODE_CLASS_MAPPINGS = {}
+NODE_DISPLAY_NAME_MAPPINGS = {}
+
+
+class PoolProfile:
+    CATEGORY = "Datasete Gates"
+    FUNCTION = "run"
+    RETURN_TYPES = ("POOL_PROFILE",)
+    RETURN_NAMES = ("profile",)
+
+    @classmethod
+    def INPUT_TYPES(cls):
+        return {
+            "required": {
+                "profile": ("STRING", {"default": ""}),      # name; JS renders a dropdown
+                "profile_id": ("STRING", {"default": ""}),    # hidden, JS-owned id
+            },
+        }
+
+    def run(self, profile, profile_id=""):
+        return (profile_id or "default",)
+
+    @classmethod
+    def IS_CHANGED(cls, profile, profile_id="", **kwargs):
+        return profile_id
+
+
+NODE_CLASS_MAPPINGS = {"PoolProfile": PoolProfile}
+NODE_DISPLAY_NAME_MAPPINGS = {"PoolProfile": "Pool Profile"}
diff --git a/gates/profiles.py b/gates/profiles.py
new file mode 100644
index 0000000..943774a
--- /dev/null
+++ b/gates/profiles.py
@@ -0,0 +1,160 @@
+"""Named-profile registry + dir ops for the Image Pool. Stdlib only."""
+import json
+import os
+import shutil
+import zipfile
+from pathlib import Path
+
+REGISTRY_NAME = "profiles.json"
+
+
+def registry_path(base):
+    return Path(base) / REGISTRY_NAME
+
+
+def empty_registry():
+    return {"profiles": []}
+
+
+def read_registry(base):
+    p = registry_path(base)
+    if not p.exists():
+        return empty_registry()
+    try:
+        with open(p, "r", encoding="utf-8") as f:
+            reg = json.load(f)
+        if not isinstance(reg, dict) or "profiles" not in reg:
+            raise ValueError("bad registry")
+        return reg
+    except (ValueError, json.JSONDecodeError):
+        return empty_registry()
+
+
+def write_registry(base, reg):
+    Path(base).mkdir(parents=True, exist_ok=True)
+    final = registry_path(base)
+    tmp = final.with_name(REGISTRY_NAME + ".tmp")
+    with open(tmp, "w", encoding="utf-8") as f:
+        json.dump(reg, f, indent=2)
+    os.replace(tmp, final)
+    return reg
+
+
+def find_by_id(reg, pid):
+    return next((p for p in reg["profiles"] if p["id"] == pid), None)
+
+
+def find_by_name(reg, name):
+    return next((p for p in reg["profiles"] if p["name"] == name), None)
+
+
+def create_profile(base, name, pid, ts=0):
+    reg = read_registry(base)
+    if find_by_name(reg, name):
+        raise ValueError(f"profile name already exists: {name}")
+    (Path(base) / pid).mkdir(parents=True, exist_ok=True)
+    entry = {"id": pid, "name": name, "created": ts}
+    reg["profiles"].append(entry)
+    write_registry(base, reg)
+    return entry
+
+
+def rename_profile(base, pid, name):
+    reg = read_registry(base)
+    entry = find_by_id(reg, pid)
+    if not entry:
+        raise KeyError(pid)
+    other = find_by_name(reg, name)
+    if other and other["id"] != pid:
+        raise ValueError(f"profile name already exists: {name}")
+    entry["name"] = name
+    write_registry(base, reg)
+    return entry
+
+
+def delete_profile(base, pid):
+    reg = read_registry(base)
+    reg["profiles"] = [p for p in reg["profiles"] if p["id"] != pid]
+    write_registry(base, reg)
+    d = Path(base) / pid
+    if d.exists():
+        shutil.rmtree(d)
+    return reg
+
+
+def duplicate_profile(base, src_id, name, new_id, ts=0):
+    reg = read_registry(base)
+    if not find_by_id(reg, src_id):
+        raise KeyError(src_id)
+    if find_by_name(reg, name):
+        raise ValueError(f"profile name already exists: {name}")
+    src = Path(base) / src_id
+    dst = Path(base) / new_id
+    if src.exists():
+        shutil.copytree(src, dst)
+    else:
+        dst.mkdir(parents=True, exist_ok=True)
+    entry = {"id": new_id, "name": name, "created": ts}
+    reg["profiles"].append(entry)
+    write_registry(base, reg)
+    return entry
+
+
+def export_profile(base, pid, dest_zip):
+    src = Path(base) / pid
+    if not src.exists():
+        raise KeyError(pid)
+    entry = find_by_id(read_registry(base), pid)
+    name = entry["name"] if entry else pid
+    with zipfile.ZipFile(dest_zip, "w", zipfile.ZIP_DEFLATED) as z:
+        z.writestr("profile_meta.json", json.dumps({"name": name}))
+        for f in src.rglob("*"):
+            if f.is_file():
+                z.write(f, arcname=str(Path("pool") / f.relative_to(src)))
+    return dest_zip
+
+
+def seed_profile(base, from_id, profile_id):
+    """Copy a pool dir's files (images/masks/manifest) into a profile dir.
+
+    Used to save an Image Pool's current contents into a freshly-selected empty
+    profile. Copies top-level files only (the pool layout is flat); returns the
+    number of files copied. No-op (0) if the source dir is missing.
+    """
+    src = Path(base) / from_id
+    dst = Path(base) / profile_id
+    if not src.exists():
+        return 0
+    dst.mkdir(parents=True, exist_ok=True)
+    n = 0
+    for f in src.iterdir():
+        if f.is_file():
+            shutil.copy2(f, dst / f.name)
+            n += 1
+    return n
+
+
+def import_profile(base, src_zip, new_id, name=None, ts=0):
+    reg = read_registry(base)
+    meta_name = None
+    dst = Path(base) / new_id
+    dst.mkdir(parents=True, exist_ok=True)
+    with zipfile.ZipFile(src_zip) as z:
+        names = z.namelist()
+        if "profile_meta.json" in names:
+            meta_name = json.loads(z.read("profile_meta.json")).get("name")
+        for n in names:
+            if n.startswith("pool/") and not n.endswith("/"):
+                target = dst / n[len("pool/"):]
+                target.parent.mkdir(parents=True, exist_ok=True)
+                with z.open(n) as srcf, open(target, "wb") as out:
+                    shutil.copyfileobj(srcf, out)
+    final = name or meta_name or new_id
+    candidate, i = final, 2
+    while find_by_name(reg, candidate):
+        candidate = f"{final} ({i})"
+        i += 1
+    entry = {"id": new_id, "name": candidate, "created": ts}
+    reg["profiles"].append(entry)
+    write_registry(base, reg)
+    return entry
diff --git a/gates/profiles_routes.py b/gates/profiles_routes.py
new file mode 100644
index 0000000..ae5f7e1
--- /dev/null
+++ b/gates/profiles_routes.py
@@ -0,0 +1,81 @@
+# gates/profiles_routes.py
+import os
+import tempfile
+import uuid
+
+from aiohttp import web
+from server import PromptServer
+
+from . import profiles
+from .gates_compat import grid_pool_base
+
+routes = PromptServer.instance.routes
+
+
+def _base():
+    return grid_pool_base()
+
+
+@routes.get("/grid_pool/profiles/list")
+async def _list(request):
+    return web.json_response(profiles.read_registry(_base()))
+
+
+@routes.post("/grid_pool/profiles/create")
+async def _create(request):
+    body = await request.json()
+    e = profiles.create_profile(_base(), body["name"], uuid.uuid4().hex)
+    return web.json_response(e)
+
+
+@routes.post("/grid_pool/profiles/rename")
+async def _rename(request):
+    body = await request.json()
+    return web.json_response(profiles.rename_profile(_base(), body["id"], body["name"]))
+
+
+@routes.post("/grid_pool/profiles/delete")
+async def _delete(request):
+    body = await request.json()
+    return web.json_response(profiles.delete_profile(_base(), body["id"]))
+
+
+@routes.post("/grid_pool/profiles/duplicate")
+async def _duplicate(request):
+    body = await request.json()
+    e = profiles.duplicate_profile(_base(), body["id"], body["name"], uuid.uuid4().hex)
+    return web.json_response(e)
+
+
+@routes.post("/grid_pool/profiles/seed")
+async def _seed(request):
+    body = await request.json()
+    n = profiles.seed_profile(_base(), body["from"], body["id"])
+    return web.json_response({"copied": n})
+
+
+@routes.get("/grid_pool/profiles/export")
+async def _export(request):
+    pid = request.query["id"]
+    reg = profiles.read_registry(_base())
+    entry = profiles.find_by_id(reg, pid)
+    fname = (entry["name"] if entry else pid) + ".zip"
+    tmp = os.path.join(tempfile.gettempdir(), f"profile_{pid}.zip")
+    profiles.export_profile(_base(), pid, tmp)
+    return web.FileResponse(tmp, headers={"Content-Disposition": f'attachment; filename="{fname}"'})
+
+
+@routes.post("/grid_pool/profiles/import")
+async def _import(request):
+    reader = await request.multipart()
+    tmp = os.path.join(tempfile.gettempdir(), f"import_{uuid.uuid4().hex}.zip")
+    async for part in reader:
+        if part.name == "file":
+            with open(tmp, "wb") as f:
+                while True:
+                    chunk = await part.read_chunk()
+                    if not chunk:
+                        break
+                    f.write(chunk)
+    e = profiles.import_profile(_base(), tmp, uuid.uuid4().hex)
+    return web.json_response(e)
diff --git a/tests/test_node.py b/tests/test_node.py
index e500df3..5ae2cdc 100644
--- a/tests/test_node.py
+++ b/tests/test_node.py
@@ -54,3 +54,17 @@ def test_is_changed_differs_after_active_change(tmp_path, monkeypatch):
     pool.set_active(base, "p1", 1)
     h2 = node.GridImagePool.IS_CHANGED(index=-1, pool_id="p1")
     assert h1 != h2
+
+
+def test_profile_input_overrides_pool_id(tmp_path, monkeypatch):
+    base = str(tmp_path / "grid_pool")
+    monkeypatch.setattr(node, "_grid_pool_base", lambda: base)
+    import io
+    from PIL import Image
+    from gates import pool
+    buf = io.BytesIO(); Image.new("RGB", (4, 6), (255, 0, 0)).save(buf, "PNG")
+    pool.add_image(base, "prof1", buf.getvalue(), ts=1)   # images under the PROFILE id
+    n = node.GridImagePool()
+    # pool_id is "default" (empty) but profile points at prof1
+    img, mask, idx, count, label = n.run(index=-1, pool_id="default", profile="prof1")
+    assert count == 1 and idx == 0
diff --git a/tests/test_profile_node.py b/tests/test_profile_node.py
new file mode 100644
index 0000000..b555d92
--- /dev/null
+++ b/tests/test_profile_node.py
@@ -0,0 +1,13 @@
+# tests/test_profile_node.py
+from gates import profile_node as pn
+
+def test_io():
+    assert pn.PoolProfile.RETURN_TYPES == ("POOL_PROFILE",)
+    assert pn.PoolProfile.RETURN_NAMES == ("profile",)
+
+def test_run_returns_id_or_default():
+    assert pn.PoolProfile().run(profile="setA", profile_id="id1") == ("id1",)
+    assert pn.PoolProfile().run(profile="", profile_id="") == ("default",)
+
+def test_is_changed_tracks_id():
+    assert pn.PoolProfile.IS_CHANGED(profile="x", profile_id="id1") == "id1"
diff --git a/tests/test_profiles.py b/tests/test_profiles.py
new file mode 100644
index 0000000..690db8e
--- /dev/null
+++ b/tests/test_profiles.py
@@ -0,0 +1,108 @@
+# tests/test_profiles.py
+from gates import profiles as pr
+
+def test_empty_registry():
+    assert pr.empty_registry() == {"profiles": []}
+
+def test_read_missing_is_empty(tmp_path):
+    assert pr.read_registry(str(tmp_path)) == {"profiles": []}
+
+def test_write_then_read(tmp_path):
+    reg = {"profiles": [{"id": "a", "name": "n", "created": 1}]}
+    pr.write_registry(str(tmp_path), reg)
+    assert (tmp_path / "profiles.json").exists()
+    assert pr.read_registry(str(tmp_path)) == reg
+
+def test_read_corrupt_is_empty(tmp_path):
+    (tmp_path / "profiles.json").write_text("{ not json")
+    assert pr.read_registry(str(tmp_path)) == {"profiles": []}
+
+def test_find_helpers():
+    reg = {"profiles": [{"id": "a", "name": "x"}, {"id": "b", "name": "y"}]}
+    assert pr.find_by_id(reg, "b")["name"] == "y"
+    assert pr.find_by_name(reg, "x")["id"] == "a"
+    assert pr.find_by_id(reg, "z") is None
+
+def test_create_profile(tmp_path):
+    e = pr.create_profile(str(tmp_path), "setA", "id1", ts=10)
+    assert e == {"id": "id1", "name": "setA", "created": 10}
+    assert (tmp_path / "id1").is_dir()
+    assert pr.find_by_name(pr.read_registry(str(tmp_path)), "setA")["id"] == "id1"
+
+def test_create_duplicate_name_raises(tmp_path):
+    import pytest
+    pr.create_profile(str(tmp_path), "setA", "id1")
+    with pytest.raises(ValueError):
+        pr.create_profile(str(tmp_path), "setA", "id2")
+
+def test_rename_profile(tmp_path):
+    pr.create_profile(str(tmp_path), "old", "id1")
+    e = pr.rename_profile(str(tmp_path), "id1", "new")
+    assert e["name"] == "new"
+    assert pr.find_by_name(pr.read_registry(str(tmp_path)), "new")["id"] == "id1"
+
+def test_rename_to_existing_name_raises(tmp_path):
+    import pytest
+    pr.create_profile(str(tmp_path), "a", "id1")
+    pr.create_profile(str(tmp_path), "b", "id2")
+    with pytest.raises(ValueError):
+        pr.rename_profile(str(tmp_path), "id2", "a")
+
+def test_delete_profile_removes_dir_and_entry(tmp_path):
+    pr.create_profile(str(tmp_path), "a", "id1")
+    (tmp_path / "id1" / "img_0001.png").write_bytes(b"x")
+    pr.delete_profile(str(tmp_path), "id1")
+    assert not (tmp_path / "id1").exists()
+    assert pr.find_by_id(pr.read_registry(str(tmp_path)), "id1") is None
+
+def test_duplicate_copies_images(tmp_path):
+    pr.create_profile(str(tmp_path), "src", "id1")
+    (tmp_path / "id1" / "img_0001.png").write_bytes(b"abc")
+    e = pr.duplicate_profile(str(tmp_path), "id1", "copy", "id2", ts=5)
+    assert e == {"id": "id2", "name": "copy", "created": 5}
+    assert (tmp_path / "id2" / "img_0001.png").read_bytes() == b"abc"
+
+def test_duplicate_duplicate_name_raises(tmp_path):
+    import pytest
+    pr.create_profile(str(tmp_path), "src", "id1")
+    with pytest.raises(ValueError):
+        pr.duplicate_profile(str(tmp_path), "id1", "src", "id2")
+
+def test_export_import_roundtrip(tmp_path):
+    src_base = str(tmp_path / "a"); dst_base = str(tmp_path / "b")
+    pr.create_profile(src_base, "setA", "id1", ts=1)
+    from pathlib import Path
+    (Path(src_base) / "id1" / "img_0001.png").write_bytes(b"hello")
+    zpath = str(tmp_path / "setA.zip")
+    pr.export_profile(src_base, "id1", zpath)
+    assert (tmp_path / "setA.zip").exists()
+    # import into a different base, fresh id
+    e = pr.import_profile(dst_base, zpath, "id99", ts=2)
+    assert e["id"] == "id99"
+    assert e["name"] == "setA"                       # name carried in zip meta
+    assert (Path(dst_base) / "id99" / "img_0001.png").read_bytes() == b"hello"
+
+def test_import_name_collision_suffixes(tmp_path):
+    base = str(tmp_path)
+    pr.create_profile(base, "setA", "id1")
+    from pathlib import Path
+    (Path(base) / "id1" / "f.png").write_bytes(b"x")
+    z = str(tmp_path / "e.zip"); pr.export_profile(base, "id1", z)
+    e = pr.import_profile(base, z, "id2")
+    assert e["name"] == "setA (2)"
+
+def test_seed_profile_copies_pool_into_empty(tmp_path):
+    from pathlib import Path
+    base = str(tmp_path)
+    pr.create_profile(base, "A", "id1")                       # empty profile dir
+    (Path(base) / "srcpool").mkdir()                          # a pool's own-UUID dir
+    (Path(base) / "srcpool" / "img_0001.png").write_bytes(b"img")
+    (Path(base) / "srcpool" / "manifest.json").write_text("{}")
+    n = pr.seed_profile(base, "srcpool", "id1")
+    assert n == 2                                             # image + manifest copied
+    assert (Path(base) / "id1" / "img_0001.png").read_bytes() == b"img"
+
+def test_seed_profile_missing_source_is_noop(tmp_path):
+    base = str(tmp_path)
+    pr.create_profile(base, "A", "id1")
+    assert pr.seed_profile(base, "nope", "id1") == 0
diff --git a/web/grid_image_pool.js b/web/grid_image_pool.js
index 25e55cc..030dbcd 100644
--- a/web/grid_image_pool.js
+++ b/web/grid_image_pool.js
@@ -593,6 +593,10 @@ function setupGridNode(node) {
     if (node._countEl) node._countEl.textContent = `${n} image${n === 1 ? "" : "s"}`;
   };
 
+  // public hook for the Pool Profile companion: after it sets our pool_id widget
+  // to the selected profile id, it calls this to repaint the grid from that dir.
+  node._datasetePoolRefresh = () => node._gridRefresh();
+
   // initial width (a sensible wide default) + content-driven height; the node
   // stays freely resizable (no width floor) and the grid flex-wraps to fit.
   node._lastCount = 0;
diff --git a/web/pool_profile.js b/web/pool_profile.js
new file mode 100644
index 0000000..6741a60
--- /dev/null
+++ b/web/pool_profile.js
@@ -0,0 +1,267 @@
+import { app } from "../../scripts/app.js";
+import { api } from "../../scripts/api.js";
+
+// Pool Profile — companion to the Image Pool. A dropdown of named profiles
+// (registry under input/grid_pool/profiles.json) plus create/rename/delete/
+// duplicate/export/import actions. The pool is switched ONLY when the user
+// actively picks a profile in the dropdown (or creates/duplicates/imports one) —
+// connecting the node never changes the pool. Selecting an *empty* profile while
+// a pool with images is connected offers to seed it from those images, so the
+// current pool is never silently lost. (Modeled on JSON-Manager/project_key.)
+
+const NODE = "PoolProfile";
+const POOL_NODE = "GridImagePool";
+const R = "/grid_pool/profiles";
+
+// ---- server calls -----------------------------------------------------------
+
+async function listProfiles() {
+  const r = await api.fetchApi(`${R}/list`);
+  return (await r.json()).profiles || [];
+}
+
+async function listPoolSlots(poolId) {
+  try {
+    const r = await api.fetchApi(`/grid_pool/list?pool_id=${encodeURIComponent(poolId)}`);
+    return (await r.json()).slots || [];
+  } catch (e) { return []; }
+}
+
+async function postJson(path, body) {
+  const r = await api.fetchApi(`${R}/${path}`, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify(body),
+  });
+  if (!r.ok) throw new Error(await r.text());
+  return await r.json();
+}
+
+// ---- widget helpers ---------------------------------------------------------
+
+function hideWidget(w) {
+  if (!w) return;
+  if (w.origType === undefined) w.origType = w.type;
+  w.type = "hidden";
+  w.hidden = true;
+  w.computeSize = () => [0, -4];
+}
+
+function profileWidget(node) {
+  return node.widgets?.find((w) => w.name === "profile");
+}
+
+function idWidget(node) {
+  return node.widgets?.find((w) => w.name === "profile_id");
+}
+
+function currentEntry(node) {
+  const combo = profileWidget(node);
+  return (node._profiles || []).find((p) => p.name === combo?.value);
+}
+
+// Replace a STRING widget with a real combo, preserving its serialized value.
+function replaceWithCombo(node, name, values, callback) {
+  const idx = node.widgets?.findIndex((w) => w.name === name);
+  if (idx === undefined || idx === -1) return null;
+  const old = node.widgets[idx];
+  const saved = old.value || "";
+  const vals = values.length ? values.slice() : [""];
+  if (saved && !vals.includes(saved)) vals.unshift(saved);
+  node.widgets.splice(idx, 1);
+  const combo = node.addWidget("combo", name, saved || vals[0], callback, { values: vals });
+  node.widgets.splice(node.widgets.length - 1, 1);
+  node.widgets.splice(idx, 0, combo);
+  return combo;
+}
+
+// ---- connected pools + switching --------------------------------------------
+
+function connectedPools(node) {
+  const res = [];
+  const out = node.outputs?.[0];
+  if (!out?.links) return res;
+  for (const linkId of out.links) {
+    const link = node.graph?.links?.[linkId];
+    if (!link) continue;
+    const t = node.graph?.getNodeById?.(link.target_id);
+    if (t && t.type === POOL_NODE) res.push(t);
+  }
+  return res;
+}
+
+function setIdFromCombo(node) {
+  const entry = currentEntry(node);
+  const idw = idWidget(node);
+  if (idw) idw.value = entry?.id || "";
+}
+
+// Push the current profile id into every connected pool's pool_id widget (the
+// grid keys off getPoolId) and repaint. Only ever called from user actions.
+function switchPools(node) {
+  const id = idWidget(node)?.value || "default";
+  for (const pool of connectedPools(node)) {
+    const pw = pool.widgets?.find((w) => w.name === "pool_id");
+    if (pw) pw.value = id;
+    pool._datasetePoolRefresh?.();
+    pool.setDirtyCanvas?.(true, true);
+  }
+  node.setDirtyCanvas?.(true, true);
+}
+
+// If the selected profile is empty and a connected pool has images, offer to
+// copy those images into the profile (so switching never loses the current pool).
+async function maybeSeed(node, entry) {
+  const profSlots = await listPoolSlots(entry.id);
+  if (profSlots.length > 0) return;                 // profile already has images
+  for (const pool of connectedPools(node)) {
+    const curId = pool.widgets?.find((w) => w.name === "pool_id")?.value;
+    if (!curId || curId === entry.id) continue;
+    const curSlots = await listPoolSlots(curId);
+    if (curSlots.length === 0) continue;
+    if (confirm(`Profile "${entry.name}" is empty. Copy the ${curSlots.length} current pool image(s) into it?`)) {
+      try { await postJson("seed", { from: curId, id: entry.id }); }
+      catch (err) { alert("Seed failed: " + err); }
+    }
+    return;                                          // seed from the first match only
+  }
+}
+
+// user-initiated: set id from the dropdown, optionally offer to seed, then switch
+async function selectProfile(node) {
+  setIdFromCombo(node);
+  const entry = currentEntry(node);
+  if (entry) await maybeSeed(node, entry);
+  switchPools(node);
+}
+
+// programmatic: refresh the dropdown options + hidden id only — never switches
+async function refreshList(node, selectName) {
+  const profs = await listProfiles();
+  node._profiles = profs;
+  const names = profs.map((p) => p.name);
+  const combo = profileWidget(node);
+  if (combo) {
+    combo.options = combo.options || {};
+    combo.options.values = names.length ? names : [""];
+    if (selectName !== undefined) combo.value = selectName;
+    else if (!names.includes(combo.value)) combo.value = names[0] || "";
+  }
+  setIdFromCombo(node);
+  node.setDirtyCanvas?.(true, true);
+}
+
+// ---- actions ----------------------------------------------------------------
+
+async function actionCreate(node) {
+  const name = prompt("New profile name:");
+  if (!name) return;
+  try {
+    const e = await postJson("create", { name });
+    await refreshList(node, e.name);
+    await selectProfile(node);     // new profile is empty → offer to seed current pool
+  } catch (err) { alert("Create failed: " + err); }
+}
+
+async function actionRename(node) {
+  const e = currentEntry(node);
+  if (!e) return alert("Select a profile first");
+  const name = prompt("Rename profile:", e.name);
+  if (!name || name === e.name) return;
+  try {
+    await postJson("rename", { id: e.id, name });
+    await refreshList(node, name);   // same id, no pool switch needed
+  } catch (err) { alert("Rename failed: " + err); }
+}
+
+async function actionDuplicate(node) {
+  const e = currentEntry(node);
+  if (!e) return alert("Select a profile first");
+  const name = prompt("Duplicate as:", e.name + " copy");
+  if (!name) return;
+  try {
+    const ne = await postJson("duplicate", { id: e.id, name });
+    await refreshList(node, ne.name);
+    await selectProfile(node);       // already has images → maybeSeed no-ops, just switch
+  } catch (err) { alert("Duplicate failed: " + err); }
+}
+
+async function actionDelete(node) {
+  const e = currentEntry(node);
+  if (!e) return alert("Select a profile first");
+  if (!confirm(`Delete profile "${e.name}"? This removes its images.`)) return;
+  try {
+    await postJson("delete", { id: e.id });
+    await refreshList(node);          // update dropdown; leave the pool as-is
+  } catch (err) { alert("Delete failed: " + err); }
+}
+
+function actionExport(node) {
+  const e = currentEntry(node);
+  if (!e) return alert("Select a profile first");
+  window.open(`${R}/export?id=${encodeURIComponent(e.id)}`);
+}
+
+function actionImport(node) {
+  const input = document.createElement("input");
+  input.type = "file";
+  input.accept = ".zip";
+  input.onchange = async () => {
+    if (!input.files?.length) return;
+    const fd = new FormData();
+    fd.append("file", input.files[0], input.files[0].name);
+    try {
+      const r = await api.fetchApi(`${R}/import`, { method: "POST", body: fd });
+      if (!r.ok) throw new Error(await r.text());
+      const e = await r.json();
+      await refreshList(node, e.name);
+      await selectProfile(node);     // imported profile has images → just switch
+    } catch (err) { alert("Import failed: " + err); }
+  };
+  input.click();
+}
+
+// ---- node setup -------------------------------------------------------------
+
+function setupProfileNode(node) {
+  hideWidget(idWidget(node));
+  // combo callback = active user selection → switch (and maybe seed)
+  replaceWithCombo(node, "profile", [], () => { selectProfile(node); });
+
+  node.addWidget("button", "➕ Create", null, () => actionCreate(node));
+  node.addWidget("button", "✎ Rename", null, () => actionRename(node));
+  node.addWidget("button", "⧉ Duplicate", null, () => actionDuplicate(node));
+  node.addWidget("button", "🗑 Delete", null, () => actionDelete(node));
+  node.addWidget("button", "⬇ Export", null, () => actionExport(node));
+  node.addWidget("button", "⬆ Import", null, () => actionImport(node));
+
+  node.setSize(node.computeSize());
+  refreshList(node);   // populate the dropdown; does NOT switch any pool
+}
+
+app.registerExtension({
+  name: "datasete.gates.poolprofile",
+
+  async beforeRegisterNodeDef(nodeType, nodeData) {
+    if (nodeData.name !== NODE) return;
+
+    const onNodeCreated = nodeType.prototype.onNodeCreated;
+    nodeType.prototype.onNodeCreated = function () {
+      const r = onNodeCreated?.apply(this, arguments);
+      setupProfileNode(this);
+      return r;
+    };
+
+    // on load the pool already has its saved pool_id, so just refresh the
+    // dropdown to show the saved name — no switching, no seeding.
+    const onConfigure = nodeType.prototype.onConfigure;
+    nodeType.prototype.onConfigure = function () {
+      const r = onConfigure?.apply(this, arguments);
+      const node = this;
+      queueMicrotask(() => refreshList(node, profileWidget(node)?.value));
+      return r;
+    };
+    // NOTE: intentionally no onConnectionsChange handler — connecting a profile
+    // must never change the pool (the user switches via the dropdown).
+  },
+});