feat: add Pyramid home dashboard

frontend/src/App.tsx

@@ -25,6 +25,7 @@ import { MCPKeysPage } from "./pages/MCPKeysPage";
 import { AccountPage } from "./pages/AccountPage";
 import { DatasetPage } from "./pages/DatasetPage";
 import { AlphaPage } from "./pages/AlphaPage";
+import { HomePage } from "./pages/HomePage";
 import { JobPanel } from "./components/JobPanel";
 import { BacktestPage } from "./backtests/BacktestPage";
 import { WorkspacePreferences } from "./components/WorkspacePreferences";
@@ -319,6 +320,12 @@ export default function App() {
             <main
               className={`page-content ${page !== "account" ? "bounded-page" : "account-page"}`}
             >
+              {page === "home" && (
+                <HomePage
+                  account={account}
+                  onAccount={() => changePage("account")}
+                />
+              )}
               {page === "mcp-keys" && <MCPKeysPage />}
               {pollError && (
                 <Banner
@@ -479,6 +486,7 @@ export default function App() {
               onClose={() => setChatOpen(false)}
               context={
                 {
+                  home: { page: "home" as const },
                   quantflow:
                     researchContext.page === "quantflow"
                       ? researchContext