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/onboarding/OnboardingWizard.tsx

@@ -29,9 +29,9 @@ import { PetSettings } from "../settings/PetSettings";
 import { Swatch, THEME_LABELS } from "../settings/AppearanceSettings";
 import { markOnboarded, useOnboarding } from "../../lib/userPrefs";
 import {
-  DEFAULT_MODES,
   readDefaultMode,
   readDefaultTool,
+  SAFE_MODES,
   writeDefaultMode,
   writeDefaultTool,
   type DefaultMode,
@@ -310,7 +310,7 @@ function AgentStep() {
               writeDefaultMode(m);
               setMode(m);
             }}
-            options={DEFAULT_MODES.map((m) => ({ value: m, label: t(`agent.modes.${m}`) }))}
+            options={SAFE_MODES.map((m) => ({ value: m, label: t(`agent.modes.${m}`) }))}
           />
         </div>
         <p className="text-xs text-fg-muted">{t("agent.permissionHint")}</p>

client/src/components/onboarding/__tests__/Onboarding.test.tsx

@@ -2,7 +2,7 @@
  * @file Onboarding.test.tsx
  * @description The first-run setup (docs/plans/onboarding): the account's
  * preferences are loaded into localStorage on sign-in and every later change
- * is sent back; the starting choices never hold bypass; the wizard shows only
+ * is sent back; the wizard never offers bypass (a Settings default may hold it); the wizard shows only
  * for an account that is new to it, writes each pick like Settings does and
  * ends in the tour; the tour follows the real UI step by step.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
@@ -55,7 +55,7 @@ vi.mock("../../settings/PetSettings", () => ({
 }));
 
 import { __resetUserPrefs, hydrate, useOnboarding } from "../../../lib/userPrefs";
-import { readDefaultMode, writeDefaultMode } from "../../../lib/sessionDefaults";
+import { readDefaultMode, SAFE_MODES, writeDefaultMode } from "../../../lib/sessionDefaults";
 import { OnboardingWizard } from "../OnboardingWizard";
 import { OnboardingTour, startTour } from "../OnboardingTour";
 import { __resetAiTools } from "../../../hooks/useAiTools";
@@ -98,10 +98,12 @@ describe("account preferences", () => {
     }
   });
 
-  it("never keeps bypass as the starting permission mode", () => {
+  it("keeps a bypass default from Settings, but the pet chat's safe read and the wizard never offer it", () => {
     localStorage.setItem("agenthub.permissionMode", "bypassPermissions");
-    expect(readDefaultMode()).toBe("auto");
-    writeDefaultMode("bypassPermissions" as never);
+    expect(readDefaultMode()).toBe("bypassPermissions");
+    expect(readDefaultMode({ safe: true })).toBe("auto");
+    expect(SAFE_MODES).not.toContain("bypassPermissions");
+    writeDefaultMode("nonsense" as never);
     expect(localStorage.getItem("agenthub.permissionMode")).toBe("bypassPermissions");
     writeDefaultMode("plan");
     expect(readDefaultMode()).toBe("plan");