Add startup re-import queue to apply importer fixes to signed rounds

The loan-aware NAV fix (0.2.47) only affects new imports; an already-signed
quarter keeps its old holdings until re-imported. Add a boot-time queue: an
operator stages an eNAV plus a small JSON descriptor under
data/pending_reimports and the app re-imports it on startup via the same code
path as the admin Import screen, then removes the processed files. Guarded so a
queue problem never blocks boot. Bumps the package to 0.2.48.

Used to refresh SATS Credit Fund LP Q4 2025 to its full NAV including the
Fold Holdings loan.

deploy/package.json

@@ -1,6 +1,6 @@
 {
   "name": "ten31portal-startos",
-  "version": "0.2.47",
+  "version": "0.2.48",
   "private": true,
   "scripts": {
     "build": "npm run check && rm -rf ./javascript && ncc build startos/index.ts -o ./javascript",