ui(settings): Quit/Uninstall as real buttons with icons and a busy spinner; code in row descriptions; dimmed unavailable rows; smoother switch

client/src/components/Switch.tsx

@@ -33,13 +33,16 @@ export function Switch({
       // On: the solid accent (white knob clears 3:1 in every theme). Off: a
       // border-light track with an inset fg-muted/80 ring (≥3:1 in every theme), so the control's edge
       // is visible on any surface (surface-4 alone was ~1:1 on a light card).
-      className={`relative inline-flex h-5 w-9 shrink-0 items-center rounded-full transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1 focus-visible:ring-offset-surface-0 disabled:cursor-not-allowed disabled:opacity-50 ${
-        checked ? "bg-accent-solid" : "bg-border-light ring-1 ring-inset ring-fg-muted/80"
+      // Hover darkens the track (enabled only), so it reads as clickable.
+      className={`relative inline-flex h-5 w-9 shrink-0 items-center rounded-full transition-colors duration-200 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent focus-visible:ring-offset-1 focus-visible:ring-offset-surface-0 disabled:cursor-not-allowed disabled:opacity-40 ${
+        checked
+          ? "bg-accent-solid enabled:hover:bg-accent-solid-hover"
+          : "bg-border-light ring-1 ring-inset ring-fg-muted/80 enabled:hover:ring-fg-secondary"
       }`}
     >
       <span
         aria-hidden
-        className={`inline-block h-4 w-4 rounded-full bg-white shadow transition-transform ${
+        className={`inline-block h-4 w-4 rounded-full bg-white shadow-sm ring-1 ring-black/10 transition-transform duration-200 ease-out ${
           checked ? "translate-x-[18px]" : "translate-x-0.5"
         }`}
       />

client/src/components/settings/AutostartSettings.tsx

@@ -9,17 +9,24 @@
  * boot/login while the switch is on. Between them, the status-area icon switch
  * (`GET/PUT /api/settings/tray`, on by default — server/lib/tray.js). Last,
  * **Uninstall AgentHub**: `POST /api/settings/uninstall` removes AgentHub from
- * the machine, database included (scripts/uninstall.js).
+ * the machine, database included (scripts/uninstall.js). Quit is a plain
+ * button and Uninstall a danger one, both the same width with an icon, and
+ * each spins while its request runs.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
 import { useEffect, useState } from "react";
 import { useTranslation } from "react-i18next";
+import { Loader2, Power, Trash2 } from "lucide-react";
 import { api, type AutostartStatus, type TrayStatus } from "../../lib/api";
 import { toast } from "../../lib/toast";
 import { confirmDialog } from "../../lib/confirm";
 import { SettingsRow, SettingsSection, SettingsSwitchRow } from "./SettingsRow";
 
+// The two action buttons share one width, so they line up under the switches.
+const ACTION = "min-w-[6.5rem] justify-center text-xs";
+const ICON = "h-3.5 w-3.5 shrink-0";
+
 export function AutostartSettings() {
   const { t } = useTranslation("settings");
   const [status, setStatus] = useState<AutostartStatus | null>(null);
@@ -126,9 +133,11 @@ export function AutostartSettings() {
             type="button"
             data-testid="quit-agenthub"
             disabled={quitting}
+            aria-busy={quitting}
             onClick={() => void quit()}
-            className="btn-ghost text-xs text-status-danger disabled:opacity-40"
+            className={`btn-secondary ${ACTION}`}
           >
+            {quitting ? <Loader2 className={ICON + " animate-spin"} /> : <Power className={ICON} />}
             {t("quit.button")}
           </button>
         }
@@ -141,9 +150,15 @@ export function AutostartSettings() {
             type="button"
             data-testid="uninstall-agenthub"
             disabled={uninstalling}
+            aria-busy={uninstalling}
             onClick={() => void uninstall()}
-            className="btn-ghost text-xs text-status-danger disabled:opacity-40"
+            className={`btn-danger ${ACTION}`}
           >
+            {uninstalling ? (
+              <Loader2 className={ICON + " animate-spin"} />
+            ) : (
+              <Trash2 className={ICON} />
+            )}
             {t("uninstall.button")}
           </button>
         }

client/src/components/settings/SettingsRow.tsx

@@ -4,7 +4,8 @@
  * switch row (`SettingsSwitchRow`) and a segmented radio group
  * (`SettingsSegmented`, arrow keys + one roving tab stop). Rows divide
  * themselves with a hairline, none after the last, so a section is just its
- * rows in order.
+ * rows in order. A string description shows its `backticked` words as code,
+ * and a `disabled` row dims its label, so an unavailable control reads as one.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -32,30 +33,55 @@ export function SettingsSection({
   );
 }
 
+/** `text` with every `backticked` run drawn as inline code (a command to type). */
+export function withCode(text: string): ReactNode {
+  const parts = text.split(/`([^`]+)`/);
+  if (parts.length === 1) return text;
+  return parts.map((p, i) =>
+    i % 2 ? (
+      <code
+        key={i}
+        className="whitespace-nowrap rounded border border-border bg-surface-2 px-1 py-px font-mono text-[11px] text-fg-secondary"
+      >
+        {p}
+      </code>
+    ) : (
+      p
+    )
+  );
+}
+
 export function SettingsRow({
   label,
   description,
   control,
   alignTop = false,
+  disabled = false,
   id,
 }: {
   label: ReactNode;
   description?: ReactNode;
   control: ReactNode;
   alignTop?: boolean;
+  /** The control cannot be used here: the label is dimmed with it. */
+  disabled?: boolean;
   /** A deep-link anchor (`#id`) for one row inside a grouped section. */
   id?: string;
 }) {
   return (
     <div
       id={id}
-      className={`${id ? "scroll-mt-24 " : ""}flex justify-between gap-4 border-b border-border/60 last:border-b-0 ${
+      className={`${id ? "scroll-mt-24 " : ""}flex justify-between gap-6 border-b border-border/60 last:border-b-0 ${
         description ? "py-3" : "py-2"
       } ${alignTop ? "items-start" : "items-center"}`}
     >
       <div className="min-w-0">
-        <p className="text-sm text-fg-secondary">{label}</p>
-        {description && <p className="mt-0.5 text-xs text-fg-muted">{description}</p>}
+        <p className={`text-sm ${disabled ? "text-fg-muted" : "text-fg-secondary"}`}>{label}</p>
+        {description && (
+          <p className="mt-0.5 text-xs leading-relaxed text-fg-muted">
+            {typeof description === "string" ? withCode(description) : description}
+          </p>
+        )}
       </div>
       <div className="shrink-0">{control}</div>
     </div>
@@ -82,6 +108,7 @@ export function SettingsSwitchRow({
       id={id}
       label={label}
       description={description}
+      disabled={disabled}
       control={<Switch checked={checked} onChange={onChange} label={label} disabled={disabled} />}
     />
   );