0.2.24: household-aware GP asset balances + show on Overview

Fixes a linked GP entity showing an empty Assets tab when its capital is
held under the linked account's other legal names (the eNAV often splits
one LLC across names).

- New GET /api/entities/{id}/asset-balances: household-aware, returns the
  linked account's (and its linked names') capital balances per fund, plus
  the linked account name for a clear empty state.
- Assets tab uses it; shows "linked to X but no balances on file" instead
  of a blank table when the wrong account is linked.
- GP/mgmt Overview now surfaces the total linked balance across funds with
  a "View by fund" link, so assets are visible without opening the tab.

Verified: 15/15 backend tests (incl. household case); frontend tsc + vite
build clean.

deploy/package.json

@@ -1,6 +1,6 @@
 {
   "name": "ten31portal-startos",
-  "version": "0.2.23",
+  "version": "0.2.24",
   "private": true,
   "scripts": {
     "build": "npm run check && rm -rf ./javascript && ncc build startos/index.ts -o ./javascript",