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.

server/lib/update-check.js

@@ -36,7 +36,7 @@
 const fs = require("fs");
 const path = require("path");
 const { execFile } = require("child_process");
-const { readLastPluginUpdate } = require("./plugin-update");
+const { readLastPluginUpdate, readPluginUpdateProgress } = require("./plugin-update");
 const { getClaudeHome } = require("./claude-home");
 
 const DEFAULT_ROOT = path.join(__dirname, "..", "..");
@@ -115,10 +115,16 @@ function execNpm(cwd, args, opts = {}) {
         if (!err) return resolve(String(stdout).trim());
         if (err.killed) {
           return reject(
-            new Error(`${step} did not finish within ${Math.round(timeout / 60_000)} min and was stopped`)
+            new Error(
+              `${step} did not finish within ${Math.round(timeout / 60_000)} min and was stopped`
+            )
           );
         }
-        const tail = String(stderr || err.message || err).trim().split(/\r?\n/).slice(-15).join("\n");
+        const tail = String(stderr || err.message || err)
+          .trim()
+          .split(/\r?\n/)
+          .slice(-15)
+          .join("\n");
         reject(new Error(`${step} failed:\n${tail}`));
       }
     );
@@ -491,6 +497,7 @@ async function pluginStatus(root, pluginInstall, options = {}) {
     plugin_marketplace: pluginInstall.marketplace,
     plugin_name: pluginInstall.plugin,
     last_plugin_update: readLastPluginUpdate(),
+    plugin_update_progress: readPluginUpdateProgress(),
 
     local_version: localVersion,
     // Not a clone, so there is nothing to be shallow about and no distances to
@@ -785,6 +792,8 @@ async function getUpdatesStatus(gitRoot = DEFAULT_ROOT, options = {}) {
     // every consumer (route, WS broadcast, CLI) gets it from one place — and so
     // a chain that died is visible instead of looking like a slow restart.
     last_plugin_update: pluginInstall ? readLastPluginUpdate() : null,
+    // The step a running chain is on, while it runs.
+    plugin_update_progress: pluginInstall ? readPluginUpdateProgress() : null,
     local_version: localVersion,
     // True when commit distances are unusable and version strings are the only
     // signal — the UI must not render an "N commits" badge in that case.