diff --git a/Cargo.lock b/Cargo.lock
index 3f3a94b..e3cde71 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -285,7 +285,7 @@ checksum = "1d07550c9036bf2ae0c684c4297d503f838287c83c53686d05370d0e139ae570"
 
 [[package]]
 name = "cortiq-gateway"
-version = "0.2.16"
+version = "0.2.17"
 dependencies = [
  "anyhow",
  "arc-swap",
diff --git a/Cargo.toml b/Cargo.toml
index 1ba04c7..05f4d42 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cortiq-gateway"
-version = "0.2.16"
+version = "0.2.17"
 edition = "2021"
 rust-version = "1.75"
 license = "Apache-2.0"
diff --git a/src/admin/mod.rs b/src/admin/mod.rs
index d72364c..9652c10 100644
--- a/src/admin/mod.rs
+++ b/src/admin/mod.rs
@@ -606,7 +606,10 @@ fn cmf_file_for_model(
     cmf: &crate::config::CmfCfg,
     m: &crate::config::ModelCfg,
 ) -> Option<std::path::PathBuf> {
+    // Any loopback URL counts as local — managed servers may sit on any port.
     let local = m.base_url == cmf.cortiq_server_url
+        || m.base_url.contains("//127.0.0.1:")
+        || m.base_url.contains("//localhost:")
         || m.base_url
             .contains(&format!("{}:{}", cmf.local_host, cmf.local_port));
     let stem = m.model.trim();
@@ -646,12 +649,24 @@ fn cmf_path_referenced(cfg: &crate::config::Config, path: &std::path::Path) -> b
             .any(|m| cmf_file_for_model(&cfg.cmf, m).as_deref() == Some(path))
 }
 
-async fn delete_model(State(state): State<SharedState>, Path(id): Path<String>) -> ApiResult {
+#[derive(Deserialize)]
+struct DeleteModelQuery {
+    /// Also remove the local `.cmf` from disk. Defaults to true (the historical
+    /// behaviour); the UI asks the user and passes it explicitly.
+    delete_file: Option<bool>,
+}
+
+async fn delete_model(
+    State(state): State<SharedState>,
+    Path(id): Path<String>,
+    Query(q): Query<DeleteModelQuery>,
+) -> ApiResult {
     let mut cfg = current_cfg(&state);
+    let delete_file = q.delete_file.unwrap_or(true);
 
     // Managed local models live in [cmf], not [[models]]. Deleting one stops its
-    // server, removes it from the managed config, and deletes its file — unless
-    // another model still points at the same file.
+    // server, removes it from the managed config, and (when asked) deletes its
+    // file — unless another model still points at the same file.
     let managed = cfg.cmf.effective_servers().into_iter().find(|s| s.id == id);
     if let Some(server) = managed {
         if !cfg.models.iter().any(|x| x.id == id) {
@@ -666,10 +681,10 @@ async fn delete_model(State(state): State<SharedState>, Path(id): Path<String>)
             let shared = cmf_path_referenced(&cfg, &path);
             state.cmf.stop_one(&id).await;
             state.reload(cfg)?;
-            let file_removed = if shared {
-                false
-            } else {
+            let file_removed = if delete_file && !shared {
                 remove_cmf_path(&path)
+            } else {
+                false
             };
             return ok(json!({ "ok": true, "file_removed": file_removed }));
         }
@@ -685,8 +700,8 @@ async fn delete_model(State(state): State<SharedState>, Path(id): Path<String>)
     let file = victim
         .as_ref()
         .and_then(|m| cmf_file_for_model(&cfg.cmf, m));
-    // Only remove the file if no remaining model still references it.
-    let file = file.filter(|p| !cmf_path_referenced(&cfg, p));
+    // Only remove the file if asked to AND no remaining model still references it.
+    let file = file.filter(|p| delete_file && !cmf_path_referenced(&cfg, p));
     state.reload(cfg)?;
     let file_removed = file.map(|p| remove_cmf_path(&p)).unwrap_or(false);
     ok(json!({ "ok": true, "file_removed": file_removed }))
diff --git a/web/js/api.js b/web/js/api.js
index 5c9768c..a9c939c 100644
--- a/web/js/api.js
+++ b/web/js/api.js
@@ -60,7 +60,8 @@ export const api = {
   listModels: () => j("GET", "/models"),
   createModel: (b) => j("POST", "/models", b),
   updateModel: (id, b) => j("PUT", "/models/" + encodeURIComponent(id), b),
-  deleteModel: (id) => j("DELETE", "/models/" + encodeURIComponent(id)),
+  deleteModel: (id, deleteFile = true) =>
+    j("DELETE", "/models/" + encodeURIComponent(id) + "?delete_file=" + (deleteFile ? "true" : "false")),
   probeModel: (id) => j("POST", "/models/" + encodeURIComponent(id) + "/probe"),
 
   // routing
diff --git a/web/js/i18n/en.js b/web/js/i18n/en.js
index 9ee5825..4b8bc22 100644
--- a/web/js/i18n/en.js
+++ b/web/js/i18n/en.js
@@ -132,6 +132,8 @@ export default {
   "models.form.secretMissing": "not set",
   "models.form.secretPlaceholder": "set or replace key (write-only)",
   "models.deleteConfirm": "Delete model \"{id}\"?",
+  "models.deleteFile": "also delete the model file from disk",
+  "models.deletedWithFile": "Deleted (file removed from disk)",
   "models.form.idOrModel": "Enter an id or a model name",
   "models.form.apiKey": "API Key",
   "models.form.apiKeyPlaceholder": "paste your API key",
diff --git a/web/js/i18n/ru.js b/web/js/i18n/ru.js
index 0ac890c..b8591b1 100644
--- a/web/js/i18n/ru.js
+++ b/web/js/i18n/ru.js
@@ -131,6 +131,8 @@ export default {
   "models.form.secretMissing": "не задан",
   "models.form.secretPlaceholder": "задать или заменить ключ (только запись)",
   "models.deleteConfirm": "Удалить модель \"{id}\"?",
+  "models.deleteFile": "также удалить файл модели с диска",
+  "models.deletedWithFile": "Удалено (файл стёрт с диска)",
   "models.form.idOrModel": "Укажите id или имя модели",
   "models.form.apiKey": "API-ключ",
   "models.form.apiKeyPlaceholder": "вставьте API-ключ",
diff --git a/web/js/views/models.js b/web/js/views/models.js
index c1b809b..5a03b62 100644
--- a/web/js/views/models.js
+++ b/web/js/views/models.js
@@ -1,5 +1,5 @@
 // Models — pool table with add/edit modal, probe, and per-model secret entry.
-import { h, mount, modal, toast, confirmDialog, money } from "../ui.js";
+import { h, mount, modal, toast, money } from "../ui.js";
 import { t } from "../i18n.js";
 import { api } from "../api.js";
 import { appState } from "../app.js";
@@ -280,15 +280,31 @@ function row(m, meta, reload) {
           "button",
           {
             class: "btn sm danger",
-            onClick: async () => {
-              if (!(await confirmDialog(t("models.deleteConfirm", { id: m.id })))) return;
-              try {
-                await api.deleteModel(m.id);
-                toast(t("toast.deleted"), "good");
-                await reload();
-              } catch (e) {
-                toast(String(e.message || e), "bad");
-              }
+            onClick: () => {
+              // local models may have a .cmf on disk — let the user decide its fate
+              const isLocal = m.managed || /127\.0\.0\.1|localhost/.test(m.base_url || "");
+              const fileCb = h("input", { type: "checkbox", checked: isLocal ? true : null });
+              const body = h(
+                "div",
+                {},
+                h("p", {}, t("models.deleteConfirm", { id: m.id })),
+                isLocal
+                  ? h("label", { class: "check" }, fileCb, t("models.deleteFile"))
+                  : null
+              );
+              modal(t("common.delete") + ": " + m.id, body, async () => {
+                try {
+                  const r = await api.deleteModel(m.id, isLocal && fileCb.checked);
+                  toast(
+                    r.file_removed ? t("models.deletedWithFile") : t("toast.deleted"),
+                    "good"
+                  );
+                  await reload();
+                } catch (e) {
+                  toast(String(e.message || e), "bad");
+                  return false;
+                }
+              }, t("common.delete"));
             },
           },
           t("common.delete")