fix(theseus/settings): Aegis card reads correct IPC shapes

CDP test surfaced two shape mismatches:
- cfg.listAddons() returns {installed:[...], sidebarPanels:[...]} — my
  destructure treated it as a plain array, so .find() blew up with
  'installed || []).find is not a function'.
- cfg.checkAddonUpdates() returns {report, skipped, staged:[...]} —
  same problem, .find on an object.

Both call sites now normalise (installed = listRes.installed || [],
staged = res.staged || []) before finding the aegis entry. Verified
via CDP against a fresh install: card renders 'You're on v0.4.0.
Updates arrive over-the-air…'; clicking Check for updates keeps
that status (no staged update live); Restart-to-apply stays hidden.

settings.html

@@ -1009,15 +1009,20 @@
     const aegisCheck  = document.getElementById("aegisCheck");
     const aegisApply  = document.getElementById("aegisApply");
     const isAegis = (a) => a && (a.id === "aegis" || a.id === "bchwallet");
+    // addons-list returns {installed:[...], sidebarPanels:[...]}
+    // addons-check-updates returns {report, skipped, staged:[...]}
+    // addons-list-staged returns a flat [...]. Normalise both call sites.
     async function refreshAegis() {
       aegisApply.hidden = true;
       try {
-        const [installed, staged] = await Promise.all([
+        const [listRes, stagedRes] = await Promise.all([
-          C.listAddons ? C.listAddons() : Promise.resolve([]),
+          C.listAddons ? C.listAddons() : Promise.resolve({}),
           C.listStagedAddonUpdates ? C.listStagedAddonUpdates() : Promise.resolve([]),
         ]);
-        const cur = (installed || []).find(isAegis);
+        const installed = (listRes && listRes.installed) || [];
-        const upd = (staged   || []).find(isAegis);
+        const staged    = Array.isArray(stagedRes) ? stagedRes : [];
+        const cur = installed.find(isAegis);
+        const upd = staged.find(isAegis);
         if (!cur) { aegisStatus.textContent = "Aegis isn't installed. Reinstall Theseus to add it back, or open Settings > Extensions to load it manually."; return; }
         const curVer = cur.version || "?";
         if (upd && upd.version) {
@@ -1033,8 +1038,9 @@
       aegisCheck.disabled = true; aegisCheck.textContent = "Checking…";
       aegisStatus.textContent = "Checking…";
       try {
-        const staged = await (C.checkAddonUpdates ? C.checkAddonUpdates() : Promise.resolve([]));
+        const res = await (C.checkAddonUpdates ? C.checkAddonUpdates() : Promise.resolve({}));
-        const upd = (staged || []).find(isAegis);
+        const staged = (res && Array.isArray(res.staged)) ? res.staged : [];
+        const upd = staged.find(isAegis);
         if (!upd) { aegisStatus.textContent = "You're on the latest Aegis."; }
         // refresh will populate everything else + toggle the Apply button
         refreshAegis();