chore: v2.8.12 — clone queue and progress, session defaults, chat agents, drops as @ mentions

Whole tree from parallel sessions, plus the version bump:
- Clone: a queue with live progress (Add workspace and extra folders),
  clones run under nice/ionice so the machine stays responsive.
- Settings → AI tools → Session defaults: a new session's default
  permission mode / bypass per account.
- Chat lists the background subagents that have not reported back yet.
- A file pasted or dropped into a claude pane goes in as an @ mention.
- Changes panel: say why amend/undo is refused on a pushed commit.
- openapi.yaml regenerated (Artifacts, Host, resumeById).

client/src/components/lanes/CloneSourcesForm.tsx

@@ -10,7 +10,8 @@
  * sent to Settings → Git first — and an HTTPS host with no saved login offers
  * the login row up front (optional: a public repo needs none). The identity is
  * read again when the window regains focus, so a key made in another tab
- * counts at once.
+ * counts at once. The running clone shows its queue place, then git's
+ * progress (`CloneProgress`); **Partial clone** sends `partial: true`.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -18,6 +19,7 @@ import { useCallback, useEffect, useState } from "react";
 import { useTranslation } from "react-i18next";
 import { Check, Loader2, X } from "lucide-react";
 import { api, type GitIdentity, type LaneSourcesView } from "../../lib/api";
+import { CloneProgress, newCloneToken } from "./CloneProgress";
 
 type Row = {
   url: string;
@@ -25,6 +27,8 @@ type Row = {
   note?: string;
   /** The note points at Settings → Git (no key, or a key the host refused). */
   ssh?: boolean;
+  /** While busy: the progress token CloneProgress polls. */
+  token?: string;
 };
 type Login = { host: string; username: string; token: string; remember: boolean };
 
@@ -71,6 +75,7 @@ export function CloneSourcesForm({
   const [rows, setRows] = useState<Row[]>([]);
   const [busy, setBusy] = useState(false);
   const [login, setLogin] = useState<Login | null>(null);
+  const [partial, setPartial] = useState(false);
   const [identity, setIdentity] = useState<GitIdentity | null>(null);
 
   // An unknown identity (an older server, a failed read) checks nothing: the
@@ -116,10 +121,13 @@ export function CloneSourcesForm({
     for (const row of next) {
       if (row.state === "failed") continue;
       row.state = "busy";
+      row.token = newCloneToken();
       show();
       try {
         const view = await api.lanes.cloneFolder(laneId, {
           url: row.url,
+          progressToken: row.token,
+          ...(partial ? { partial: true } : {}),
           ...(login?.username.trim() && login.token
             ? {
                 credentials: {
@@ -151,6 +159,7 @@ export function CloneSourcesForm({
           row.note = e.message || String(err);
         }
       }
+      row.token = undefined;
       show();
     }
     if (asked) setLogin(asked);
@@ -191,6 +200,18 @@ export function CloneSourcesForm({
         className="w-full rounded border border-border bg-surface-1 px-2 py-1 font-mono text-[11px] text-fg-primary"
       />
       <p className="text-[11px] text-fg-muted">{t("home.cloneHint", { path: parent })}</p>
+      <label
+        className="flex items-center gap-1.5 text-[11px] text-fg-secondary"
+        title={t("clone.partialHint")}
+      >
+        <input
+          type="checkbox"
+          data-testid="workspace-clone-partial"
+          checked={partial}
+          onChange={(e) => setPartial(e.target.checked)}
+        />
+        {t("clone.partial")}
+      </label>
       {sshHosts.length > 0 && (
         <p
           role="alert"
@@ -280,6 +301,11 @@ export function CloneSourcesForm({
                   {r.url}
                 </span>
               </span>
+              {r.state === "busy" && r.token && (
+                <div className="ml-[18px] mt-0.5">
+                  <CloneProgress token={r.token} />
+                </div>
+              )}
               {r.note && (
                 <span className="ml-[18px] block text-status-danger">
                   {r.note}