0.2.27-0.2.32: LP portal polish, brand palette, default investor logins

Cumulative checkpoint since 0.2.26:
- 0.2.27/28: entity valuation-history table; investor gain/loss = NAV +
  distributions vs paid-in
- 0.2.29: Reset Fund Partners (endpoint, Partners-tab button, CLI, action)
- 0.2.30: "Current Capital Balance" label, %-only gain/loss
- 0.2.31: Management Entities rename, Carry Vehicle type, chart
  distributions-line gate
- 0.2.32: LP-facing polish pass
  * Ten31 brand palette from the logo (navy/mint); orange retired
  * portfolio summary card across funds; gain labeled "net of paid-in"
  * whole-dollar headline figures; "History · N quarters" toggle
  * documents grouped by year with a "New" badge (users.docs_seen_at)
  * eNAV-created members start on default password with login enabled;
    enable-investor-logins CLI + StartOS action for existing accounts
  * password minimum raised to 8 chars; login help line (Portal@ten31.xyz)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend/tests/test_clear_partners.py

@@ -0,0 +1,60 @@
+"""Clearing a fund's partners removes only that fund's statements + access grants,
+never the investor accounts (which may belong to other funds)."""
+
+from datetime import date
+
+from ten31portal.models import (
+    CapitalAccountStatement, Entity, EntityAccess, EntityType, User, UserRole,
+)
+
+
+def _make_fund(session, name):
+    e = Entity(name=name, type=EntityType.fund)
+    session.add(e)
+    session.commit()
+    session.refresh(e)
+    return e
+
+
+def _add_partner(session, entity_id, user_id, ending):
+    session.add(EntityAccess(user_id=user_id, entity_id=entity_id))
+    session.add(CapitalAccountStatement(
+        entity_id=entity_id, investor_user_id=user_id, as_of_date=date(2025, 12, 31),
+        commitment_cents=0, beginning_balance_cents=0, contributions_cents=0,
+        distributions_cents=0, ending_balance_cents=ending,
+    ))
+    session.commit()
+
+
+def test_clear_partners_scoped_to_one_fund(auth_client, session):
+    from tests.conftest import make_user
+
+    fund2 = _make_fund(session, "Low Time Preference Fund II, LLC")
+    fund3 = _make_fund(session, "Low Time Preference Fund III, LP")
+    lp = make_user(session, username="lp1", role=UserRole.investor, name="LP One")
+    # Same investor is a partner in BOTH funds (the real-world case that caused the mixup).
+    _add_partner(session, fund2.id, lp.id, 1_000_00)
+    _add_partner(session, fund3.id, lp.id, 2_000_00)
+
+    resp = auth_client.delete(f"/api/entities/{fund3.id}/partners")
+    assert resp.status_code == 200, resp.text
+    assert resp.json() == {"statements": 1, "access_grants": 1}
+
+    # Fund III is wiped of partners...
+    assert session.exec(
+        CapitalAccountStatement.__table__.select().where(
+            CapitalAccountStatement.entity_id == fund3.id
+        )
+    ).first() is None
+    assert session.exec(
+        EntityAccess.__table__.select().where(EntityAccess.entity_id == fund3.id)
+    ).first() is None
+    assert auth_client.get(f"/api/entities/{fund3.id}/partners").json() == []
+
+    # ...but Fund II keeps its partner, and the investor account still exists.
+    assert len(auth_client.get(f"/api/entities/{fund2.id}/partners").json()) == 1
+    assert session.get(User, lp.id) is not None
+
+
+def test_clear_partners_missing_entity_404(auth_client):
+    assert auth_client.delete("/api/entities/99999/partners").status_code == 404