feat(ledger): add bookkeeping workbench and transaction views

- Add transactions_dirty table and zero-tolerance cleansing action

- Implement bookkeeping workbench (/bookkeeping) with searchable Combobox channel selector and card suffix / account identifier

- Implement transaction ledger (/transactions) with date groupings, multi-currency metrics, and filters

- Update AGENTS.md guidelines for Base UI Select and Combobox bindings

app/register/page.tsx

@@ -1,10 +1,10 @@
-import { Suspense } from "react";
-import { RegisterForm } from "./register-form";
+import { Suspense } from "react"
+import { RegisterForm } from "./register-form"
 
 export const metadata = {
   title: "注册新账号 - Fluxent",
   description: "创建您的 Fluxent 多币种资产与记账账户",
-};
+}
 
 export default function RegisterPage() {
   return (
@@ -17,5 +17,5 @@ export default function RegisterPage() {
     >
       <RegisterForm />
     </Suspense>
-  );
+  )
 }