0.2.36: Investor View carries exit status + grey out fully-exited fund cards

The admin read-only Investor View built capital-account responses
without exited_on, so an exited position showed the active card with
$0s (the LP's own portal was correct). Extracted exit_dates() into
capital_account_router and stamp it in investor_view too; regression
test added. A fund card where every position is exited now renders
greyed (bg + title) so it reads as closed at a glance.

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

frontend/public/sw.js

@@ -3,7 +3,7 @@
 // - content-hashed /assets/* are cache-first (immutable, safe forever)
 // - /api/* is never cached
 // Bump CACHE on each release so old entries are purged.
-const CACHE = 'ten31-portal-0.2.35'
+const CACHE = 'ten31-portal-0.2.36'
 
 self.addEventListener('install', () => self.skipWaiting())
 

frontend/src/portal/InvestorPortalView.tsx

@@ -152,10 +152,18 @@ function FundSection({
     return [...groups.values()];
   }, [accounts]);
 
+  // When every position in this fund has been sold/transferred, grey the whole card so it
+  // reads as closed at a glance — documents inside stay fully usable.
+  const allExited = byName.length > 0 && byName.every((g) => g[0].exited_on);
+
   return (
-    <section className="bg-white border border-gray-200 rounded-lg p-5">
+    <section
+      className={`border border-gray-200 rounded-lg p-5 ${allExited ? "bg-gray-50" : "bg-white"}`}
+    >
       <div className="flex items-baseline justify-between">
-        <h2 className="text-lg font-semibold text-gray-900">{entity.name}</h2>
+        <h2 className={`text-lg font-semibold ${allExited ? "text-gray-500" : "text-gray-900"}`}>
+          {entity.name}
+        </h2>
         <span className="text-xs text-gray-400 uppercase">{entity.type}</span>
       </div>
 

frontend/src/version.ts

@@ -1,4 +1,4 @@
 // Bumped each release so the running build is visible in the UI.
 // If the number shown in the app doesn't match the installed s9pk version,
 // the new frontend isn't actually being served.
-export const APP_VERSION = "0.2.35";
+export const APP_VERSION = "0.2.36";