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.
Ten31 LLC (and any GP/mgmt entity) can be linked to its investor account,
so its Assets tab shows its real capital-account balance in each fund,
pulled live from the eNAV capital accounts instead of manual entry.
- entities.linked_user_id (migration c9d0e1f2a3b4) + EntityCreate/Update/
Response fields; validated to be an investor account.
- Edit-entity form gains a "Linked investor account" picker for GP/mgmt.
- Assets tab now auto-lists the linked account's balance per fund (the
earlier manual-stakes API remains but is no longer used by the UI).
Verified: 13/13 backend tests pass; alembic head c9d0e1f2a3b4; frontend
tsc + vite build clean.
Jonathan Kirkwood