Import credit-fund loans into NAV (eNAV HLD-LOANS schedule)

The eNAV importer read only the HLD securities sheet, so a credit fund's
loan book (its largest asset) never reached NAV. SATS Credit Fund showed
$3.6M of securities while holding a $46.3M loan to Fold Holdings.

Parse the HLD-LOANS schedule alongside HLD: each loan becomes a holding
and position valued at principal plus accrued interest, flowing into
holdings, invested cost, and the quarter NAV. Adds test coverage and
bumps the package to 0.2.47.

deploy/startos/install/versions/v_0_2_47.ts

@@ -0,0 +1,17 @@
+import { VersionInfo } from '@start9labs/start-sdk'
+
+export const v_0_2_47 = VersionInfo.of({
+  version: '0.2.47:0',
+  releaseNotes: {
+    en_US:
+      'Credit-fund loans now count toward NAV. The eNAV importer reads the loan schedule ' +
+      '(HLD-LOANS) alongside the securities Holdings Report, so a fund’s loan book flows ' +
+      'into its holdings, invested cost, and quarter NAV. Previously a credit fund could show ' +
+      'only its securities (e.g. $3.6M) while holding a much larger loan (e.g. $46.3M). ' +
+      'Re-import the fund’s eNAV to refresh its signed value.',
+  },
+  migrations: {
+    up: async ({ effects }) => {},
+    down: async ({ effects }) => {},
+  },
+})