chore: v2.8.21 — update progress steps, clone in background, extra SSH keys inline, today's spend

- Plugin update reports its running step (plugin-update-progress.json →
  plugin_update_progress); a hidden update or clone leaves a progress chip.
- Clone here can run in the background.
- Git identity: extra SSH keys are added inline per host (no More keys tab).
- Users: spend today (viewer's local day, ?tz_offset=).
- Prettier on the files touched since v2.8.20.

client/src/lib/api.ts

@@ -538,6 +538,8 @@ export type ServerUserUsage = AuthUser & {
   disabled: boolean;
   workspaces: number;
   sessions: number;
+  /** Since the viewer's local midnight (absent from an older server). */
+  today?: { cost: number; tokens: number };
   last7d: { cost: number; tokens: number };
   last30d: { cost: number; tokens: number };
   /** Active login sessions (cookies not expired). */
@@ -1083,7 +1085,8 @@ export const api = {
     avatarUrl: (id: number, avatarAt?: string | null) =>
       avatarAt ? `${BASE}/users/${id}/avatar?v=${encodeURIComponent(avatarAt)}` : null,
     /** GET /api/users — every account with its recent usage (admin/analyst). */
-    list: () => request<{ users: ServerUserUsage[] }>("/users"),
+    list: () =>
+      request<{ users: ServerUserUsage[] }>(`/users?tz_offset=${new Date().getTimezoneOffset()}`),
     /** GET /api/users/audit — staff reads of members' sessions and admins'
      *  account changes, newest first. */
     audit: () => request<{ entries: AuditEntry[] }>("/users/audit"),